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Potential effects of dietary probiotics with Chinese herb polysaccharides on the growth performance, immunity, disease resistance, and intestinal microbiota of rainbow trout (Oncorhynchus mykiss) J. World Aquac. Soc. (IF 1.451) Pub Date : 2021-01-04 Ying Fan; Xiaolu Wang; Youhong Wang; Hongjun Liu; Xiaoqing Yu; Le Li; Haibin Ye; Shuxian Wang; Chunlei Gai; La Xu; Jing Diao; Pingping Guo
This study evaluated the effect of probiotics (Clostridium butyricum, Bacillus coagulans) and Chinese herb polysaccharides (Astragalus polysaccharides, APS) on growth performance, immunity, disease resistance, and intestinal microbiota of rainbow trout (Oncorhynchus mykiss). Specimens of O. mykiss (n = 360; 79.9 ± 2.2 g) were fed for 42 days with different diets containing a basal diet (control, C0)
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The effects of dietary poly‐β‐hydroxybutyrate on growth parameters, intestinal microflora, and histopathology of rainbow trout, Oncorhynchus mykiss, fingerlings J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-12-27 Tolga Şahin; Sevdan Yılmaz; İrfan Selçuk Yazıcı; Selçuk Berber
The present study aimed to evaluate the effects of poly‐β‐hydroxybutyrate (PHB)‐supplemented diets for rainbow trout (Oncorhynchus mykiss) fingerlings. For this purpose, three experimental diets were prepared to contain 0, 2, and 5% PHB; and each diet was tested in a completely randomized design for 60 days in quadruple groups of 22 fish per tank. The results showed that the inclusion of PHB in the
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Economic effects of predation by scaup on baitfish and sportfish farms J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-12-25 Carole R. Engle; Stephen Clements; Brian S. Dorr; J. Brian Davis; Luke A. Roy; Anita M. Kelly
Fish‐eating birds have been found to consume baitfish and sportfish raised on farms in the United States. Understanding the on‐farm economic effects of such wildlife conflicts is essential for wildlife management agencies to make informed decisions. Lesser scaup, while not widely considered a fish‐eating bird, will consume farmed fish. Baitfish and sportfish farms in Arkansas (the major baitfish and
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Preliminary assessment of large‐scale co‐culture of sandfish (Holothuria scabra) with the Babylon snail (Babylonia areolata) in earthen ponds and in raceways J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-12-21 Gregory T. Dobson; Nguyen Dinh Quang Duy; Paul C. Southgate
Holothuria scabra (sandfish) and Babylonia areolata were trialed in two large‐scale co‐culture experiments. Experiment 1 assessed co‐culture in 4 × 400 m2 earthen ponds where Babylonia were cultured in a central pen at a density of 400 individuals/m2 with sandfish occupying the remaining pond space at 1.1 individuals/m2. Sandfish grew from 18.20 ± 6.67 g to 119.03 ± 17.74 g in 92 days and Babylonia
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Influence of salinity on survival, growth, hemolymph osmolality, gill sodium potassium ATPase activity, and sodium potassium chloride co‐transporter expression in the redclaw crayfish Cherax quadricarinatus J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-12-20 Reem Rida; Razan Zein‐Eddine; Sawsan Kreydiyyeh; Antonio Garza de Yta; Imad Patrick Saoud
The Australian redclaw crayfish Cherax quadricarinatus is a freshwater crustacean aquacultured in many countries. Redclaw crayfish are often exposed to saline waters in attempts to improve flavor, to relieve stress during transport, and to prevent or treat parasitic infestations. However, the effect of salinity on the crayfish osmoregulatory process is not well studied. In the present work, we assessed
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Assessment of Bolbophorus damnificus prevalence and cercariae shedding in Planorbella trivolvis populations from catfish aquaculture ponds in Mississippi, USA J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-12-13 Mackenzie A. Gunn; Peter J. Allen; Thomas Graham Rosser; David J. Wise; Lester H. Khoo; Matt J. Griffin
Bolbophorus damnificus (Digenea: Bolbophoridae) causes significant losses in US catfish aquaculture. Little is known regarding the prevalence of infected snail hosts during outbreaks. To assess prevalence of snails observed shedding Bolbophorus spp. cercariae, as well as snails that were infected but not observed shedding cercariae, Planorbella trivolvis (n = 8,159) were collected from 14 catfish production
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Growth performance and intestinal microbial changes of Carassius auratus in response to pomegranate (Punica granatum) peel extract‐supplemented diets J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-12-13 Hamidreza Ahmadniaye Motlagh; Zahra Rokhnareh; Omid Safari; Yahya Selahvarzi
This study aimed to investigate the effect of pomegranate (Punica granatum) peel extract (PPE) on growth indices, intestinal bacteria, and total fungi count of Carassius auratus intestine. Ninety C. auratus fries (11.04 ± 0.22 g) were distributed among 15 aquariums (100‐L) in a completely randomized design (triplicated), and were fed diets containing 0.1, 1, 2, and 4% PPE for 60 days at a feeding rate
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Influence of temperature on growth and survival of juvenile winter flounder, Pseudopleuronectes americanus (Walbaum) reared under continuous light J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-12-10 Paul Casey; Vahid Zadmajid; Ian A. E. Butts; Sune Riis Sørensen; Matthew K. Litvak
Winter flounder, Pseudopleuronectes americanus, has emerged as a promising candidate flatfish for cold‐water aquaculture and restocking. Here, juveniles were reared for 8 weeks at three temperatures: 10, 15, and 20°C under 24‐hr light. All fish were imaged at stocking and at 2‐week intervals, where growth was measured as changes in standard length (SL) and body area (BA). By week 2, fish reared at
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The Open Access Journal of the World Aquaculture Society J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-12-07 Matthew Slater
As JWAS moves into its 52nd year of publication, JWAS 52 (1) will be the first fully Open Access issue of the journal. This is a timely and significant change, which was deliberated over a long period by our editorial team together with the WAS Board and the publishing house Wiley Blackwell. Moving to fully Open Access is extremely exciting and I am convinced that this change aligns the journal to
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Aerator energy use in shrimp farming and means for improvement J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-11-20 Claude E. Boyd; Aaron A. McNevin
Estimates of aeration energy use in shrimp farming varied from 11.4 to 41.6 GJ/t shrimp (average = 19.8 GJ/t). Several opportunities for reducing energy use in aeration are available. Many farms adopt an excessive yield to installed aeration capacity ratio. Moreover, the proportion of installed aerator capacity in use and duration of aerator operation per day are often more than necessary during the
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Distribution and abundance of scaup using baitfish and sportfish farms in eastern Arkansas J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-11-20 Stephen A. Clements; Brian S. Dorr; J. Brian Davis; Luke A. Roy; Carole R. Engle; Katie C. Hanson‐Dorr; Anita M. Kelly
Arkansas' bait‐ and sportfish facilities are commonly used by various piscivorous bird species, including lesser scaup (Aythya affinis) and greater scaup (A. marila) that consume substantial quantities of fish. To mediate this predation, farmers implement extensive bird harassment programs that create additional costs to fish loss, thus research investigating the distribution and abundance of scaup
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Effects of nonstarch polysaccharide hydrolase of plant protein‐based diets on growth, nutrient digestibility, and protease/amylase activities of Yellow River carp, Cyprinus carpio J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-11-09 Dongyan Guan; Zhen Wang; Haojun Han; Huiwen Sun; Yang Li; Wenju Wan; Jiting Wang
The purpose of this study was to evaluate the effects of nonstarch polysaccharide (NSP) hydrolase (primarily xylanase and β‐glucanase), present in plant protein‐based diets, on growth, nutrient digestibility, and protease/amylase activity of Yellow River carp, Cyprinus carpio var.. Six hundred fish were randomly allocated to four groups in five replicates and fed diets with different NSP enzyme levels
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Lemon, Citrus aurantifolia, peel and Bacillus licheniformis protected common carp, Cyprinus carpio, from Aeromonas hydrophila infection by improving the humoral and skin mucosal immunity, and antioxidative responses J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-11-08 Faeze Sadeghi; Ehsan Ahmadifar; Mohsen Shahriari Moghadam; Maryam Ghiyasi; Mahmoud A. O. Dawood; Sevdan Yilmaz
The role of dietary lemon peel (LM) and/or Bacillus licheniformis (BL) on the growth, immunity, and resistance against Aeromonas hydrophila in common carp, Cyprinus carpio was investigated in this study. LM and BL were included in diets at 0% (T0), 108 CFU/g BL (T1), 1.5% LM and 108 CFU/g BL (T2), and 3% LM and 108 CFU/g BL (T3). Fish fed with T1, T2, or T3 had higher weight gain, specific growth rate
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Dietary sour lemon (Citrus limon) peel essential oil supplementation for reduction of deltamethrin‐induced stress in rainbow trout (Oncorhynchus mykiss) J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-11-02 Maryam Amiri Resketi; Sakineh Yeganeh; Khosro Jani Khalili
The purpose of this study was to investigate the dietary effects of using essential oil from sour lemon peel (Citrus limon) on growth performance, carcass composition, blood and serum parameters, and liver enzymes of juvenile rainbow trout (Oncorhynchus mykiss) exposed to deltamethrin (DMN) pesticide. Treatments with no lemon peel essential oil (LPEO) and without DMN (control), as well as four treatments
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Automatic counting methods in aquaculture: A review J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-19 Daoliang Li; Zheng Miao; Fang Peng; Liang Wang; Yinfeng Hao; Zhenhu Wang; Tao Chen; Hui Li; Yingying Zheng
Object counting in aquaculture is an important task, and has been widely applied in fish population estimation, estimation of lobster abundance and scallop stocks, and so forth. However, underwater object counting is challenging for biologists and marine scientists because of the diversity of backgrounds of the lake or ocean, the uncertainty of the object motion, and the occlusion between objects.
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Assessment of the ideal ratios of digestible essential amino acids for pacu, Piaractus mesopotamicus, juveniles by the amino acid deletion method J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-19 André Z. Boaratti; Thiago M. T. Nascimento; Kifayat U. Khan; Cleber F. M. Mansano; Thaís S. Oliveira; Daniel M. A. Queiroz; Rafael S. Romaneli; Andressa T. Rodrigues; Nilva K. Sakomura; João B. K. Fernandes
The present study aimed to determine the ideal ratios of digestible essential amino acids (EAAs) for pacu (Piaractus mesopotamicus) juveniles by the amino acid (AA) deletion method. A completely randomized design which consisted of 11 treatments and three replicates each was used. The treatments included a control diet (CD) containing 55% of nonpurified natural ingredients and 45% of purified synthetic
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Characterization of cannibalism in early paralarvae of Patagonian red octopus, Enteroctopus megalocyathus (Gould, 1852), grown in a controlled environment J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-16 Viviana Espinoza; Ana Farías; Iker Uriarte
In the experimental mariculture of Patagonian red octopus, Enteroctopus megalocyathus, paralarvae rearing showed the highest mortalities. Part of this mortality has been attributed to cannibalism, so we studied the joint effect of paralarvae density and prey availability upon cannibalism in the first 2 weeks after hatching. Three culture densities (1, 5, and 10 paralarvae/L) and three prey availabilities
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Effect of a phytogenic feed additive on the growth performance and immunity of Pacific white leg shrimp, Litopenaeus vannamei, fed a low fishmeal diet J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-16 Jutta Kesselring; Christina Gruber; Benedict Standen; Silvia Wein
Plant‐derived products have been suggested to partially replace fishmeal in aquafeed; however, often at decreased growth performance, inflammatory responses, and increased susceptibility to diseases. This study assessed the effects of the commercial phytogenic feed additive Digestarom PEP MGE on the growth, nutritional performance, and immune response of L. vannamei. Juvenile shrimp (N = 540) were
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Linseed protein concentrate as alternative to fishmeal in diets for silver catfish, Rhamdia quelen J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-15 Dirleise Pianesso; Fernanda Rodrigues Goulart; Taida Juliana Adorian; Patrícia Inês Mombach; Joziane Soares de Lima; Thaís Soares dos Santos; Leila Picolli da Silva
A 60‐day feeding trial was conducted to evaluate the efficiency of the substitution of fishmeal (FM) with linseed protein concentrate (LPC) in the diet of silver catfish, Rhamdia quelen (6.13 g). Five isonitrogenous and isoenergetic experimental diets were formulated to replace 0, 10, 20, 30, or 40% of FM with LPC, and silver catfish were fed these diets to apparent satiation. LPC had a lower protein
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Effects of salinity on growth characteristics and osmoregulation of juvenile cobia, Rachycentron canadum (Linnaeus 1766), reared in potassium‐amended inland saline groundwater J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-14 Jose Antony; Appidi Krishna Reddy; Arun Sudhagar; Hari Krishna Vungurala; Luke A Roy
The suitability of inland saline groundwater as a medium to culture juvenile cobia, Rachycentron canadum, was assessed. In the first experiment, juvenile cobia stocked in raw (unamended) saline groundwater at salinities of 5, 10, and 15 g/L exhibited complete mortality after 108, 176, and 195 hr, respectively. The second experiment evaluated the rearing of juvenile cobia (mean weight ~9.23 ± 0.12 g)
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Evaluation of growth, sex (male proportion; sexual dimorphism), and color segregation in four cross combinations of different strains of XX female and YY male Nile Tilapia J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-13 Noel D. Novelo; Boris Gomelsky; Shawn D. Coyle; Alexander G. Kramer
Four cross combinations of different YY male and female Nile Tilapia Oreochromis niloticus strains were evaluated for growth, sex, and color segregation. Red color parental strains included blotched phenotypes. The Genetically Improved Farmed Tilapia (GIFT) was the only dark (wild‐type) color parental strain. Fish of the same age and cross were stocked in three replicate tanks for four crosses in one
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Byssal re‐attachment behavior in the winged pearl oyster Pteria penguin in response to low salinity levels J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-13 Hebert Ely Vasquez; Zheng Xing; Xin Zhan; Zhifeng Gu; Aimin Wang
The effect of low salinity levels on byssal re‐attachment behavior in Pteria penguin juveniles was observed in the laboratory. Juvenile pearl oysters were submerged in seawater blended to 8.0, 12.0, 16.0, 20.0, 24.0, 28.0, and 32.0 salinity levels for a period of 48 hr. The sub‐lethal salinity level was greater than 20.0 psu. Although salinity levels of 20.0 and 24.0 psu did not affect the oyster survival
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Arginine supplementation in plant‐rich diets affects growth, feed utilization, body composition, blood biochemical indices and gene expressions of the target of rapamycin signaling pathway in juvenile Asian red‐tailed catfish (Hemibagrus wyckoiides) J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-12 Dahai Gu; Jingying Zhao; Samwel Mchele Limbu; Yunan Liang; Junming Deng; Baoliang Bi; Lingfu Kong; Hui Yan; Xiaowen Wang; Qing Hu; Yu Gao; Dan Jia; Hua Rong
Arginine (Arg) is an important essential amino acid required for optimum fish growth. However, its role in plant‐rich diets on growth and the required level in juvenile Hemibagrus wyckioides are currently unknown. This study evaluated the effects of Arg supplementation in plant‐rich diets on growth, feed utilization, whole body composition, blood biochemical indicators and gene expressions of the target
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Effects of three methionine sources in diets on temporal B0AT1 and ASCT2 mRNA expression in different intestinal segments of cobia, Rachycentron canadum J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-08 Yuanfa He; Shuyan Chi; Beiping Tan; Xiaohui Dong; Qihui Yang; Hongyu Liu; Shuang Zhang
A 4‐week feeding trial was conducted using five groups of hybrid grouper (61.15 ± 0.15 g) to explore the potential effects of three methionine (Met) sources. Five isonitrogenous and isolipidic diets were formulated that included a fishmeal (FM) diet; nonsupplemented (NS) diet; or NS diets with the addition of the L‐methionine (L‐Met), DL‐methionine (DL‐Met), or coated Met (Co‐Met) to obtain the same
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Hybridizing aquaculture and economics J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-08 Carole R. Engle
The growth and development of aquaculture around the world ultimately depends on whether it is economically feasible. Most aquaculture producers, scientists, and leaders recognize this and often make a reference in various ways to economics. Economic viability is also frequently included in various delineations of requirements for sustainability. Why is it, then, that the type of information needed
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Sexual parameters, digestive enzyme activities, and growth performance of guppy (Poecilia reticulata) fed garlic (Allium sativum) extract supplemented diets J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-09-21 Hamidreza Ahmadniaye Motlagh; Marina Paolucci; Mahkameh Lashkarizadeh Bami; Omid Safari
Although many studies have assessed the various effects of garlic on fish, the impact of garlic on steroid hormones has not been studied. In the present study, the effect of aqueous garlic extract on sex steroid hormones, fry production, digestive enzyme activities, growth performance, and survival of Poecilia reticulata were evaluated. A total of 360 P. reticulata fries (0.013 ± 0.001 g) were randomly
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Interactive effects of stocking density and dietary supplementation with Nano selenium and garlic extract on growth, feed utilization, digestive enzymes, stress responses, and antioxidant capacity of grass carp, Ctenopharyngodon idella J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-10-07 Hossein Adineh; Mahdi Naderi; Afieh Nazer; Morteza Yousefi; Ehsan Ahmadifar
The effects of dietary Nano selenium (Se) and garlic extract on the performance of grass carp under different stocking densities were examined. Fish (2.10 ± 0.09 g) were stocked into 18 tanks: fish were fed a diet supplemented with 1 mg Nano Se and 1 g garlic kg−1 diet (Diet1) or a diet supplemented with 2 mg Nano Se and 2 g garlic kg−1 diet (Diet2) and reared at low (LD, 24 fish per tank), medium
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Effect of understocking density of channel catfish fingerlings in intensively aerated multiple‐batch production J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-09-15 Ganesh Kumar; David Wise; Menghe Li; Suja Aarattuthodiyil; Shraddha Hegde; Billy Rutland; Sean Pruitt; Matt Griffin; Lester Khoo
Multiple‐batch production is the most widely practiced method of raising channel catfish. Producers are increasingly adopting intensified production practices in multiple‐batch systems by increasing stocking density and aeration rates as a means to improve cost efficiencies. Proven stocking recommendations are required for the efficient implementation of recent developments in multiple‐batch production
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Principal economic effects of cormorant predation on catfish farms J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-09-14 Carole R. Engle; Terrel W. Christie; Brian S. Dorr; Ganesh Kumar; Brian Davis; Luke A. Roy; Anita M. Kelly
Substantial economic losses of farmed catfish to fish‐eating birds such as the double‐crested cormorant, Phalacrocorax auritus, continue to be reported on U.S. catfish farms. An economic analysis was conducted of the on‐farm effects of both the increased expenditures to scare fish‐eating birds from catfish farms and of the value of the catfish that were consumed by cormorants. A survey was conducted
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Effect of low levels of fumonisin contamination on gilthead seabream (Sparus aurata) J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-09-04 Rui A. Gonçalves; Jorge Dias; Dian Schatzmayr
Use of plant‐based ingredients in aquafeeds, especially for carnivorous species, is likely to increase in view of concerns regaridng the sustainability, price, and availability of fishmeal. As mycotoxins are a common problem associated with the use of plant ingredients, this study was undertaken to evaluate the effect of two levels of fumonisins (168 μg/kg feed and 333 μg/kg) and compared with 0μg/kg
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Dietary supplementation of host‐associated lactic acid bacteria modulates growth, metabolic activities, and immune‐related gene expression in giant freshwater prawn, Macrobrachium rosenbergii J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-08-26 Md. Abdul Kader; Nursyafiqah Zahidah Azahar; Shumpei Iehata; Mahbuba Bulbul; Md. Moudud Islam; Joyshri Sarker; Mariom; Md. Moshiur Rahman; Md Asaduzzaman
The present study was carried out to evaluate the dietary effects of host‐associated lactic acid bacteria on growth performance, metabolic enzyme activities, and immune response of Macrobrachium rosenbergii juveniles. To formulate the test diets, a control (Con) diet was supplemented with a commercial probiotic and three host‐derived bacteria Enterococcus faecalis (EC), Lactococcus lactis I (LC‐I)
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Efficacy of various coated materials to prevent nutrient leaching for Pacific white shrimp Litopenaeus vannamei commercial diets J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-08-25 Jingping Guo; Robert Davis; Charles Starkey; Donald Allen Davis
The physical characteristics and leaching rates of water‐soluble compounds from shrimp feeds are major considerations in nutrient delivery. Yet, there is limited information on nutrient leaching from feeds or the mechanisms to minimize leaching. This study evaluated the efficacy of various coating agents on the physical characteristics and leaching of nutrients from commercial feeds for Litopenaeus
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Supplementation of citric acid in plant protein‐based diets for juvenile tambaqui, Colossoma macropomum J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-08-25 Marcelo dos S. Nascimento; Bruno O. de Mattos; Márcia R. F. M. Bussons; Adriano T. de Oliveira; Ariany R. da S. Liebl; Thaís B. Carvalho
We evaluated citric acid supplementation (0, 10, 20, and 30 g/kg) in plant protein‐based diets for juvenile tambaqui, Colossoma macropomum. In Experiment 1, fish (n = 160; 27.56 ± 2.73 g) were distributed in 310 L tanks (n = 16) for 80 days. Zootechnical performance, hematological parameters, and mineral composition (muscle and bones) did not differ significantly (p > .05). The inclusion of citric
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Growth and physiological responses of juvenile amberjack (Seriola dumerili) fed pellet diets bound by different binders J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-08-25 Saichiro Yokoyama; Yuya Asada; Manabu Ishikawa; Shunsuke Koshio
Appropriate binders have not yet been determined in pellet feed for amberjack Seriola dumerili juveniles. This study aimed to assess the influence of binders (activated gluten [AG], guar gum [GG], and carboxymethylcellulose [CMC]) on growth, feed ingestion, gastric emptying time (GET), digestibility, intestinal histology, body composition, and blood chemical constituents of amberjack juvenile. Dry
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Responses of some innate immune‐genes involved in the toll‐pathway in black tiger shrimp (Penaeus monodon) to Vibrio harveyi infection and on exposure to ligands in vitro J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-08-12 Anand Deepika; Krishnan Sreedharan; Kooloth Valappil Rajendran
In shrimp, which rely largely on their innate immune system for defense against invading pathogens, the Toll‐pathway has been extensively studied, as it plays a crucial role in innate immune responses. Different innate immune genes in the Toll‐pathway of shrimp, Penaeus monodon viz., Toll‐Like receptor (PmToll), Myeloid differentiation factor‐88 (PmMyD88), and Tumor necrosis factor receptor associated
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Effects of dietary cortisol administration on sex ratios in dwarf gouramis and rosy barbs J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-07-21 Shane W. Ramee; Taylor N. Lipscomb; Matthew A. DiMaggio
Sexual differentiation in teleosts is based on diverse and complex combinations of genetic and environmental factors. Environmental conditions during early development can alter gonadal differentiation leading to sex reversal, where the individual's genotypic and phenotypic sexes are opposite. In many species, the mechanism of environmental sex reversal has been linked to the stress axis and fluctuations
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Effects of long‐term restricted feeding followed by full feeding on growth, processing yield, fillet proximate composition, and economics of market‐size hybrid catfish, ♀ Ictalurus punctatus × ♂ Ictalurus furcatus J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-07-17 Menghe H. Li, David J. Wise, Ganesh Kumar, Brian G. Bosworth, Charles C. Mischke, Suja Aarattuthodiyil, William Rutland, Penelope M. Lucas
A pond study examined the effects of long‐term restricted feeding followed by full feeding on production and processing characteristics, fillet composition, and economics of market‐size hybrid catfish, ♀ Ictalurus punctatus × ♂ Ictalurus furcatus. Market‐size fish averaging 674 g were stocked into 24 ponds (0.04 ha) at 17,300 fish/ha. Fish were either fed once or twice weekly for 4 months or once or
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Reduced stress responses by MS‐222 in juvenile silver pomfret (Pampus argenteus) J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-07-17 Na Yu; Xiaohuan Cao; Yajun Wang; Siwen Kuang; Jiabao Hu; Yang Yang; Shanliang Xu; Man Zhang; Yibo Sun; Weiwei Gu; Xiaojun Yan
The silver pomfret, Pampus argenteus is a major economically important marine fish in China. However, P. argenteus is sensitive to many stress factors and susceptible to injury. This problem could be resolved using anesthesia. We determined the lowest effective dose (LED) of tricaine methanesulfonate (MS‐222) and assessed the longest safe deep anesthesia time and effect after chasing. P. argenteus
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Assessing effects of substituting dietary fish meal with boiled donkey and cow blood meal on growth performance and digestive enzyme activities of Clarias gariepinus juvenile J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-07-17 Johnny O. Ogunji, Stanley C. Iheanacho, Gina A. Abe, Onyinye R. Ikeh
This study investigated the effects of cow blood meal (CBM) and donkey blood meal (DBM) supplemented diets on growth and digestive enzymes activity in juvenile Clarias gariepinus. Boiled blood meals (CBM and DBM) were used to substitute fishmeal at 7%, 17%, 25%, and 33% percentage inclusion levels, respectively. A total of 450 juvenile C. gariepinus (8.48 ± 0.09 g) were randomized to nine experimental
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Effects of relative humidity and elevated oxygen concentrations on egg‐hatching success of American alligator, Alligator mississippiensis J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-07-17 Robert C. Reigh, Millie B. Williams
Two experiments were conducted to determine effects of relative humidity (RH) and atmospheric oxygen concentration on hatching success of artificially incubated alligator eggs. In one study, 216 eggs were subjected to one of four treatments involving two levels of RH (80 or 93% RH) and two atmospheric oxygen concentrations (21 or 28% O2). Hatching success of eggs in the 80/21 and 80/28 treatments,
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Potential of indigenous Bacillus spp. as probiotic feed supplements in an extruded low‐fish‐meal diet for juvenile olive flounder, Paralichthys olivaceus J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-07-04 Kai‐Min Niu; Sanaz Khosravi; Damini Kothari; Woo‐Do Lee; Bong‐Joo Lee; Sang‐Gu Lim; Sang‐Woo Hur; Sang‐Min Lee; Soo‐Ki Kim
A 12‐week feeding trial was designed to assess the probiotic potential of indigenous Bacillus amyloliquefaciens and/or Bacillus subtilis singly or in combination with Bacillus licheniformis in an extruded feed for olive flounder (Paralichthys olivaceus ) juveniles. A high fish meal (FM) diet (control) and a low‐FM diet containing an alternative protein blend (30% FM replacement, FM30) were formulated
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The effect of dietary 17α‐methyltestosterone administration on secondary sex coloration in adult female Rosy Barbs and Dwarf Gouramis J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-06-29 Shane W. Ramee; Taylor N. Lipscomb; Amy L. Wood; Craig A. Watson; Matthew A. DiMaggio
Sexual phenotype is highly plastic in teleosts and controlled by a variety of species‐dependent factors. In aquaculture, hormone manipulations applied at different life stages are used to control sex ratios and exploit desirable traits such as ornate coloration in male ornamental species. This study investigated the effects of dietary 17α‐methyltestosterone (MT) administration on adult female Rosy
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Effects of different forms of barberry root (Berberis vulgaris) on growth performance, muscle fatty acids profile, whole‐body composition, and digestive enzymes of rainbow trout (Oncorhynchus mykiss) J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-06-26 Sara Ramezanzadeh; Abdolmohammad Abedian Kenari; Moha Esmaeili; Artur Rombenso
The supplementation of fish diets with herbal medicines aimed at improving growth and flesh quality is an attractive subject in fish nutrition research. In the present study, the effects of barberry root on the growth performance, muscle fatty acids profile, whole‐body composition, and digestive enzymes of rainbow trout were investigated. A total of 306 rainbow trout fingerlings (15.55 ± 0.76 g) were
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Economics of U.S. catfish farming practices: Profitability, economies of size, and liquidity J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-06-26 Ganesh Kumar, Carole Engle, Shraddha Hegde, Jonathan van Senten
Evolution of the U.S, catfish industry, forged by dynamic market forces, has resulted in the development of an array of farming practices. This comparative economic study was developed with data from 325 ponds on 38 commercial catfish farms (Alabama, Arkansas, and Mississippi) and provides concurrent estimates of the cost of production, profitability, and indicators of farm liquidity for the most common
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Hyperintensive stocking densities for Litopenaeus vannamei grow‐out in biofloc technology culture system J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-06-26 Lucas Genesio P. da Silveira; Dariano Krummenauer; Luís H. Poersch; Victor Torres Rosas; Wilson Wasielesky
Searching for potential increases in shrimp yields, this study evaluated the effects of different stocking densities on water quality and production performance of juvenile shrimp, Litopenaeus vannamei, reared on a biofloc‐dominated system throughout 77 days. The organisms (1.27 ± 0.54 g) were stocked at three densities, 400 (T400), 500 (T500), and 600 (T600) shrimp/m2 corresponding to 500, 625, and
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Impacts of COVID-19 on U.S. aquaculture, aquaponics, and allied businesses. J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-06-24 Jonathan van Senten,Matthew A Smith,Carole R Engle
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Effects of rearing density on growth, physiological responses, and flesh quality in juvenile cobia (Rachycentron canadum) J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-06-24 Victor A. Silva; Jesse Trushenski; Michael H. Schwarz; Ronaldo O. Cavalli
Rearing density is recognized as a critical consideration in fish husbandry: whereas higher densities may increase productivity and reduce production costs, they also represent a potential source of chronic stress and may negatively affect growth performance and product quality. Accordingly, we investigated the effects of rearing density on growth, physiological responses, and flesh quality of cobia
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Achieving sustainable aquaculture: Historical and current perspectives and future needs and challenges J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-06-24 Claude E. Boyd, Louis R. D'Abramo, Brent D. Glencross, David C. Huyben, Lorenzo M. Juarez, George S. Lockwood, Aaron A. McNevin, Albert G. J. Tacon, Fabrice Teletchea, Joseph R. Tomasso, Craig S. Tucker, Wagner C. Valenti
Important operational changes that have gradually been assimilated and new approaches that are developing as part of the movement toward sustainable intensive aquaculture production systems are presented via historical, current, and future perspectives. Improved environmental and economic sustainability based on increased efficiency of production continues to be realized. As a result, aquaculture continues
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Monoculture of ♀ channel (Ictalurus punctatus) × ♂ blue (I. furcatus) hybrid catfish mitigates proliferative gill disease caused by Henneguya ictaluri (Cnidaria: Myxobolidae) in catfish aquaculture ponds J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-25 Matt J. Griffin, Cynthia Ware, Thomas G. Rosser, Ethan T. Woodyard, Charles C. Mischke, Todd S. Byars, David J. Wise
Proliferative gill disease (PGD) caused by the myxozoan Henneguya ictaluri is one of the most damaging diseases affecting U.S. catfish aquaculture. In channel and hybrid catfish, continuous exposure to the actinospore stage of the parasite elicits a destructive branchitis, impairing osmoregulatory and respiratory function. Mortality can reach 100% in severe outbreaks. Despite similarities during acute
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Digestible energy, protein, and energy–protein ratio requirements of Pseudoplatystoma reticulatum J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-22 Tarcila Souza de Castro Silva; Ricardo Basso Zanon; Gerson Barreto Mourão; José Eurico Possebon Cyrino
The use of novel aquaculture species depends on the determination of their nutritional requirements. This study aims at determining dietary protein, energy, and protein–energy ratio requirements of juvenile striped surubim, Pseudoplatystoma reticulatum, an economically important carnivorous South American catfish for capture fisheries and highly regarded for fish farming purposes. Juvenile striped
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Impact financing and aquaculture: Maryland oyster aquaculture profitability J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-22 Matt Parker, Douglas Lipton, Reginal M. Harrell
Aquaculture production of oysters has been carried out in the state of Maryland since the 1890s, with limited success because of restrictive regulations and opposition from the commercial wild industry. After revision of the aquaculture leasing regulations in 2009, the Maryland oyster aquaculture industry expanded more than 10‐fold. In 2010, Maryland Agricultural & Resource Based Industry Development
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Cross‐protective potential of a live‐attenuated Edwardsiella ictaluri vaccine against Edwardsiella piscicida in channel (Ictalurus punctatus) and channel × blue (Ictalurus furcatus) hybrid catfish J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-19 Matt J. Griffin, Terrence E. Greenway, Todd S. Byars, Cynthia Ware, Suja Aarattuthodiyil, Ganesh Kumar, David J. Wise
Edwardsiella piscicida has emerged as an important pathogen of channel × blue catfish hybrids cultured in the southeastern United States. With increasing popularity of hybrid catfish and growing concern over E. piscicida, the crossprotective potential of a live‐attenuated E.ictaluri vaccine was evaluated. An immunization bath of E. piscicida (3 × 107 CFU/ml) protected channel catfish against immersion
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Differential expression of akirin gene in black tiger shrimp Penaeus monodon in response to immunostimulant administration and infections with Vibrio harveyi and white spot syndrome virus J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-11 Mundanda M. Dechamma, Madhu K. Mani, Moger Rajeish, Kogaluru S. Santhosh, Dharnappa S. Akhila, Biswajit Maiti, Peter Bossier, Iddya Karunasagar, Indrani Karunasagar
The akirin gene, which is strictly localized in the nucleus, plays a critical role in regulating antimicrobial peptide transcription, and has parallel functions to NF‐κB signaling pathway in both vertebrates and invertebrates. In shrimp, the akirin gene is expressed as innate immunity in response to microbial infection. In the present study, expression of akirin gene in Penaeus monodon with respect
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Determination of poly‐β‐hydroxybutyrate assimilation by postlarval whiteleg shrimp, Litopenaeus vannamei using stable 13C isotope tracing J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-11 Gladys Ludevese‐Pascual; Farhana Ahmed; Marleen De Troch; Edgar Amar; Joseph Leopoldo Laranja; Samuel Bode; Pascal Boeckx; Peter Bossier; Peter De Schryver
A preliminary study was conducted to demonstrate fate of the bacterial storage compound poly‐β‐hydroxybutyrate (PHB) once ingested and degraded in vivo in crustaceans. The 2% supplementation of 13C‐labeled Ralstonia eutropha DSM545 containing 75% PHB on dry weight in postlarval whiteleg shrimp, Litopenaeus vannamei resulted in consistent enrichment of two fatty acids (containing 14–24 carbons [C] in
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A novel marine algal oil containing both EPA and DHA is an effective source of omega‐3 fatty acids for rainbow trout (Oncorhynchus mykiss) J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-11 Ester Santigosa, Denis Constant, Dauphinee Prudence, Thomas Wahli, Viviane Verlhac‐Trichet
Novel sources of omega‐3 fatty acids (FAs) are essential for the sustainable development of the aquaculture industry. In the present study, we assessed the response of the fish to a novel algal oil as a source of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) for rainbow trout (Oncorhynchus mykiss) diets. Our results show that the palatability of the diets was maintained with high inclusion
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Functional diets improve survival and physiological response of Atlantic salmon (Salmo salar) to amoebic gill disease J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-08 Julia Mullins, Barbara Nowak, Melanie Leef, Øyvind Røn, Tommy Berger Eriksen, Charles McGurk
Amoebic gill disease (AGD) is a major challenge for the marine salmonid farming industry. This disease is caused by Paramoeba perurans, which is a parasitic amoeba that affects fish growth and survival. The present work aimed at improving Atlantic salmon (Salmo salar) diet formulation as a preventive treatment for AGD. Four diets with different quantitative composition of functional ingredients, such
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Cost drivers and profitability of U.S. pond, raceway, and RAS aquaculture J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-08 Carole R. Engle, Ganesh Kumar, Jonathan van Senten
Aquaculture in the United States has grown at a slower rate than the rest of the world in spite of abundant resources to support its growth. Although regulatory costs have widely been cited as the cause, there has not been a comprehensive attempt to examine cost structures, productivity, and associated efficiencies across various species, production systems, and scales of production in the United States
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Effects of dietary shrimp extract on growth performance, muscle fatty acid composition, and lipid metabolism‐related genes of juvenile red tilapia J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-07 Zhen‐Zhen Yu; Lan‐Mei Wang; Fei‐Biao Song; Wen‐Bin Zhu; Ling‐Hong Miao; Jian‐Jun Fu; Zai‐Jie Dong
Shrimp extract (ShE) is one kind of aquatic animal attractant with abundant amino acids. In order to investigate the effects of dietary ShE supplementation on the growth and muscle fatty acid of juvenile red tilapia (initial weight: 12.02 ± 0.02 g), a 62‐day experiment was conducted. The fish were fed six diets containing graded levels of ShE (0%, 0.5%, 1%, 2%, and 3%) without fish meal (FM) and an
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Effects of 17α‐methyltestosterone feeding and immersion on masculinization of rosy barbs Pethia conchonius and dwarf gouramis Trichogaster lalius J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-07 Shane W. Ramee; Taylor N. Lipscomb; Matthew A. DiMaggio
Hormone treatments have commonly been used to skew sex ratios toward desired phenotypes. In sexually dichromic ornamental species, males are often more ornately colored and therefore more valuable. The synthetic androgen 17α‐methyltestosterone (MT) is one of the most common hormones used in this practice. The rosy barb, Pethia conchonius, and dwarf gourami, Trichogaster lalius, are two sexually dichromic
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Amino acids and fatty acids composition in mass‐cultured Teleaulax amphioxeia strains with notable potential for rotifer (Brachionus plicatilis) enrichment J. World Aquac. Soc. (IF 1.451) Pub Date : 2020-05-03 Hyung Seop Kim, Jong Hyeok Kim, Soo‐Gun Jo, Jung‐Rae Rho, Wonho Yih
To evaluate the nutritional quality of the Teleaulax/Plagioselmis/Geminigera (TPG) clade species over the conventional prey species of the Rhodomonas/Rhinomonas/Storeatula (RHO) clade for the enrichment of a rotifer, Brachionus plicatilis, two strains of Teleaulax amphioxeia (TA), CR‐MAL07 and CR‐MAL08‐02, and a Chroomonas sp. strain CR‐MAL10 from Korean coastal waters were mass cultured in 500 L photobioreactors