样式: 排序: IF: - GO 导出 标记为已读
-
Assessment of inorganic nitrogen and phosphorus compounds removal efficiency from different types of wastewater using microalgae cultures Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2022-03-25 Inna Nezbrytska,Sergii Shamanskyi,Lesia Pavliukh,Galina Kharchenko
The efficiency of ammonium nitrogen (N-NH4 +) and phosphate (P-PO4 3-) removal from wastewater with different loads of these nutrients was evaluated using Chlamydomonas reinhardtii (Сhlоrорhуtа) and Oscillatoria neglecta (Суаnорhуtа/Cyanoprokaryota). In addition, functional characteristics of the microalgae under the studied conditions were determined. It was demonstrated that Ch. reinhardtii is resistant
-
Diversity and succession of microbial communities on typical microplastics in Xincun Bay, a long-term mariculture tropical lagoon Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2022-03-25 Yunfeng Shi,Shuai Wang,Hui Wang,Zhaoyang Li,Jiali Cai,Qiuying Han,Muqiu Zhao
In this study, three polymer types of microplastics (MPs), polyethylene (PE), polystyrene (PS) and polypropylene (PP), were exposed for 60 days in Xincun Bay (Hainan, China), a long-term mariculture tropical lagoon. High-throughput sequencing and scanning electron microscopy (SEM) were used to investigate the succession of microbial community structure and function on MPs after 10, 30, and 60 days
-
Effects of fishing and environmental parameters on the commercial bony fish assemblage in the southern Caspian Sea Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2022-03-25 Hasan Fazli,Farhad Kaymaram,Gholam Reza Daryanabard
Since the 1990s, anthropogenic activities have been the major direct or indirect threats to the structural and functional organization of the unique ecosystem of the Caspian Sea (CS). This study attempts to investigate the relationships between fish community structure and environmental parameters and to analyze the Abundance Biomass Comparison (ABC) in the CS. The input data, including catch data
-
Parasites of the invasive Chinese sleeper Percсottus glenii (Actinopterygii: Odontobutidae) in the region of the first introduction of the Carpathian population Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2022-03-25 Yuriy Kvach,Yuliya Kutsokon,Michal Janáč,Ihor Dykyy,Natalia Dzyziuk,Ivanna Dudliv,Kateryna Nazaruk
Parasites of the invasive Chinese sleeper (Perccottus glenii) were studied in five different localities at the site of the first introduction of the Carpathian population of this fish. We recorded eight taxa of parasites in Lviv water bodies. The monogenean Gyrodactylus perccotti and the cestode Nippoteania perccotti were recorded in all five lakes studied. These parasites represent Far East species
-
Sustainability or fun? Recreational angling in Marine Protected Areas Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2022-03-25 Hasan Cerim
Gökova Bay MPAs (southern Aegean Sea, Turkey) include six different no-take zones (NTZs: Akyaka, Çamlı, Akbük, Boncuk-Karaca, İngiliz Limanı, Bördübet), in four of which shore angling is permitted (Akyaka, Çamlı, Akbük, Boncuk-Karaca). This study determined the total catch and size of fish caught in the Akyaka MPA during recreational fishing. In total, fish representing 22 species belonging to 10 families
-
Molecular identification and distribution of insect larvae in the Lower Danube River Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2022-03-25 Selma Menabit,Lavinia Iancu,Ana B. Pavel,Adrian Popa,Naliana Lupascu,Cristina Purcarea
As a major component of freshwater ecosystems, insect species play an important role in nutrient cycling and are often used as bioindicators of water pollution. Although extensive studies have characterized insects from freshwater habitats, little is known about the distribution of these species along the Lower Sector of the Danube River. Therefore, this survey conducted in the Danube section within
-
Upsilococconeis dapalistriata gen. nov. & comb. nov. (Bacillariophyta) – a pantropical marine member of Cocconeidaceae Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2022-03-25 Catherine Riaux-Gobin,Andrzej Witkowski,Yenny Risjani,Yunianta Yunianta,Véronique Berteaux-Lecellier,Adrian Kryk,Łukasz Peszek,Genowefa Daniszewska-Kowalczyk
Cocconeis dapalistriata, first described as a member of the genus Cocconeis, is re-examined due to its unique ultrastructure. Both valvocopulae of this taxon show significant differences compared to those found in the genus Cocconeis. They are expanded and show some similarities with those found in Amphicocconeis. On the other hand, terminal parts of the raphe valve (RV) in C. dapalistriata are simple
-
Prospects and opportunities for mussel Mytilus trossulus farming in the southern Baltic Sea (the Gulf of Gdańsk) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2022-03-25 Adam Sokołowski,Rafał Lasota,Izabela Sami Alias,Joanna Piłczyńska,Maciej Wołowicz
In the Baltic Sea, where osmotic stress limits the growth of marine organisms, mariculture is driven primarily by the need to improve the status of the environment. To this end, several mussel farms have been attempted in selected areas, except the southern Baltic. The pilot culture of Mytilus trossulus was carried out with the use of a modified long-line system in the Gulf of Gdańsk in 2009–2012
-
Growth pattern, mortality and reproductive biology of common sole, (Linneaus, 1758), in the Sea of Marmara, Turkey Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Abdullah Ekrem Kahraman, Taner Yıldız, Uğur Uzer, Özgür Çanak
The study deals with the growth pattern, mortality, and reproduction of common sole, Solea solea (Linneaus, 1758), from the Sea of Marmara (Turkey). A total of 580 fish specimens were sampled monthly from October 2017 to September 2018. The total length of all sampled individuals ranged from 11.1 to 29.5 cm, corresponding to ages from 1 to 3 years. The length–weight relationship was expressed as W
-
Effect of water quality on the spatial distribution of charophytes in the Peshawar Valley, Khyber Pakhtunkhwa, Pakistan Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Izaz Khuram, Nadeem Ahmad, Sophia Barinova
The presented research was conducted in 2018–2019 in the Peshawar Valley, Pakistan, to study for the first time the effect of water quality on the spatial distribution of charophytes. A total of six taxa of charophytes were found at 41 sites in the Peshawar Valley along the banks of seven rivers, 16 streams and two wetlands: Chara braunii C.C.Gmelin, C. connivens Salzmann ex A. Braun, C. contraria
-
Analysis of heavy metal contamination in surface sediments of Iskenderun Bay, Turkey Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Banu Kutlu, Tahir Özcan, Gülnaz Özcan
The ecological risk resulting from the accumulation of some heavy metals in the sediments of Iskenderun Bay was assessed using the following measures: enrichment and contamination factor, pollution load index (PLI), and potential ecological risk index (RI). The concentrations of the studied heavy metals were in the following order: Fe > Ni > Mn > Cr > Zn > Cu > As > Pb > Cd > Hg. Ni and As had the
-
Distribution of oil, grease and polycyclic aromatic hydrocarbons in coastal water and sediments of Suez Bay Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Randa Elmorsi
The permanganate index (PI), oil and grease (O&G), and 17 polycyclic aromatic hydrocarbons (PAHs) were analyzed in surface sediment and water samples collected at 13 sites along the western coast of Suez Bay (SB). PI and O&G in the SB coastal seawater ranged from 9.6 mg O2 l−1 and 17.0 mg l−1 to 16.0 mg O2 l−1 and 37.0 mg l−1, respectively. The level of polycyclic aromatic hydrocarbons (PAH) in water
-
Empirical approach to risk management strategies of Mediterranean mussel farmers in Greece Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 John A. Theodorou, Ioannis Tzovenis, George Katselis
Risk perception and risk responses of Greek mussel farmers are important for understanding their risk behavior and the likely success of different risk mitigation strategies. This allows policy makers and actuarial companies to decide what risk management products to offer to address specific types of risks. Results from an empirical survey showed that ex-farm prices and health/disability status of
-
Biodiversity of freshwater macroinvertebrates on Gökçeada Island (North Aegean Sea, Turkey) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Serpil Odabaşı
Island ecosystems have attracted the attention of scientists since the early days of science because of their formation and biodiversity. Despite their abundant freshwater resources, data on freshwater diversity of Gökçeada are incomplete, especially for macroinvertebrates. This study was conducted in a wide range of freshwater ecosystems on Gökçeada between May 2016 and September 2018. Sampling of
-
Effects of seasonal changes and depth on growth parameters of the Mediterranean mussel () on a shipwreck in the Eastern Mediterranean Sea Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Tuğçe Şensurat-Genç, Onur Karadal, Adnan Çağlar Oruç, Aytaç Özgül, Altan Lök
The study was conducted between July 2018 and May 2020 to compare seasonal changes in growth parameters of the Mediterranean mussel (Mytilus galloprovincialis) at different depths in two different areas of the Northeastern Mediterranean Sea (Aegean Sea). In a preliminary study, mussels were placed in cages at different depths of an artificial reef (AR – shipwreck) and natural reef (NR). Temperature
-
Tunisian inland water microflora as a source of phycobiliproteins and biological activity with beneficial effects on human health Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Khaled Gharbi, Afef Fathalli, Rym Essid, Chiheb Fassatoui, Mohamed Salah Romdhane, Ferid Limam, Amel Ben Rejeb Jenhani
Ten monoclonal microalgal cultures were obtained from several Tunisian inland water bodies, and their dichloromethane and methanolic extracts were screened for antibacterial, antileishmanial, and antioxidant properties, as well as phycobiliprotein production capacity. Cylindrospermopsis raciborskii has been shown to synthesize high levels of phycocyanin and may be an effective alternative source to
-
Otolith phenotypic analysis for the endemic Anatolian fish species, Caucasian bleak Steindachner, 1897 (Teleostei, Leuciscidae), from Selevir Reservoir, Akarçay Basin, Turkey Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Melek Ozpicak, Semra Saygin, Savas Yilmaz, Nazmi Polat
Otolith phenotypic variability was analyzed in the Caucasian bleak (Alburnus escherichii) from the Selevir Reservoir in Turkey. Utricular (lapillus) and lagenar (asteriscus) otoliths were removed, while distinguishing between left and right otoliths. All otoliths were photographed on the distal (for asterisci) and dorsal surface (for lapilli) using a Leica DF295 digital camera. Otolith morphometrics
-
Determination of functional structure of soft-bottom marine macrobenthic communities of the Samsun Shelf Area using biological traits analysis Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-11-30 Ayşe Van, Aysun Gümüş
Biological Traits Analysis (BTA) was used to investigate the functional structure of marine macrobenthic communities along the Samsun Shelf Area (SSA). Benthic samples were collected seasonally from five different locations and at four different depths using a Van Veen grab sampler. Macrofaunal communities distributed in the SSA were assessed using 10 biological traits to identify characteristic traits
-
Historical review of Dutch Pectinariidae with as a new taxon for the Netherlands (Annelida: Polychaeta: Pectinariidae) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Ton van Haaren
Two trumpet worms (Pectinariidae), which do not resemble the two known species: Lagis koreni Malmgren, 1866 and Amphictene auricoma (Müller, 1776), have recently been collected in the Dutch North Sea (Oyster Grounds). Their characteristics match those of Pectinaria belgica (Pallas, 1766), a species with a northern distribution. This paper summarizes the current state of knowledge of Dutch Pectinariidae
-
Growth parameters of (Lesueur, 1821) (Actinopterygii, Poeciilidae) – an introduced species in brackish water of Wadi Al-Bahayes (Oman) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Salim Serkan Güçlü, Saud M. Al Jufaili, Laith A. Jawad
This work is one of the first studies on the growth of Poecilia latipinna outside its natural habitat. The objective of our study was to investigate the growth parameters of the population of P. latipinna, which is an alien species in Oman (Wadi Al-Bahayes). The population structure of P. latipinna in Wadi Al-Bahayes (Oman; 23°40′47″N; 58°11′36″E) was studied in June and August 2020, using 124 fish
-
A review of occurrence, distribution and alien status of and () (Mollusca: Heterobranchia) in the Mediterranean Sea Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Luigi Romani, Lionello P. Tringali, Fabio Crocetta
Notodiaphana atlantica and Liloa mongii are two cephalaspidean species described respectively from the Atlantic Ocean and the Red Sea, and considered widespread in their native ranges. Both species have also been recently recorded from the Mediterranean Sea, prompting some authors to consider them alien. Notwithstanding clear morphological differences in their shells, the two species have often been
-
Demographics of great sturgeon () in Iranian waters of the Caspian Sea (2008–2010) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Shima Bakhshalizadeh, Ali Bani, Shahram Abdolmalaki, Jesus T. Ponce Palafox
Demographic data of the great sturgeon, Huso huso, from the Iranian coastal waters of the Caspian Sea were derived from measurements of individuals with a fork length ranging from 84 to 255 cm, obtained from commercial fisheries. The maximum age of fish caught in the south Caspian Sea was 30 years. The estimates of the asymptotic length L∞ and the growth coefficient (K) were 265.255 cm and 0.062 per
-
Effects of seasonal changes and environmental factors on bioindicator bacteria levels in Çardak Lagoon, Çanakkale Strait, Turkey Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 İbrahim Ender Künili, A. Suat Ateş
Çardak Lagoon is one of the most important marine environments in the Turkish Strait system, which is home to a variety of organisms. The lagoon is currently under stress and faces the risk of heavy pollution. For this reason, the present state of the lagoon was monitored in this study. During sampling from October 2018 to June 2019, the levels of indicator microorganisms fluctuated up to 4.04 Log10
-
First record of the rare crab (Crustacea: Brachyura: Varunidae) in the North Sea Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Marco Faasse, Hendrik Gheerardyn, Rob Witbaard, Joël Cuperus
Several species new to the area were collected while monitoring Dutch marine waters using a dredge. The varunid crab Asthenognathus atlanticus Monod, 1933 was recorded for the first time in the North Sea. Until 2008, this relatively rare crab was known from the west coast of Africa and the western Mediterranean to northern Brittany in the north. In recent years, its distribution range has expanded
-
First record of straight-needle pteropod Rang, 1828 bloom in the Çanakkale Strait (NE Aegean Sea, Turkey) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Sezginer Tunçer, Nazik Öğretmen, Fikret Çakır, Alkan Öztekin, Ayhan Oral, Salih Can Suner
Pteropods are marine pelagic calcifier mollusks sensitive to chemical changes in seawater due to their highly soluble aragonite shells. Increased acidity (reduced pH) of seawater causes difficulties in precipitating their shells and/or results in their dissolution, which is related to increased atmospheric CO2 concentrations and warming of seawater. They are therefore indicators of environmental changes
-
(Copepoda; Philichthyidae) – an interesting cranium parasite of the swordfish collected from the Baltic Sea Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Leszek Rolbiecki, Bartłomiej Arciszewski, Joanna N. Izdebska
The swordfish, Xiphias gladius Linnaeus, 1758, is a fish that sporadically enters the Baltic Sea. The present paper describes the identification of a very rarely recorded and poorly studied copepod of the family Philichthyidae – Philichthys xiphiae Steenstrup, 1862 – in a dead swordfish found on a sea beach in Dźwirzyno (Poland) in 2016. Philichthyidae are parasites inhabiting the sensory canals in
-
Establishment and range expansion of non-native fish species facilitated by hot springs: the case study from the Upper Sakarya Basin (NW, Turkey) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Sadi Aksu, Sercan Başkurt, Özgür Emiroğlu, Ali Serhan Tarkan
Non-native species can enter new habitats and ecosystems in a variety of ways. Suitable ecological conditions must exist for non-native species to reproduce in newly colonized habitats. Hot springs are suitable habitats for tropical, aquarium, and ornamental fish species. This paper presents the results of research on the distribution of non-native and native species in relation to environmental factors
-
Effects of feed on fatty acid composition in muscles and gonads of the Chinese mitten crab () Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-08-31 Jianmin Zou, Chao Song, Shunlong Meng, Gengdong Hu, Liping Qiu, Limin Fan, Jiazhang Chen
In this study, the effects of different feeds on fatty acid composition in the Chinese mitten crab (Eriocheir sinensis) were investigated. The fatty acid composition in the Chinese mitten crab was significantly correlated with the type of feed source provided. Differences between the feed groups pertained mainly five fatty acids: oleic acid, linoleic acid, palmitic acid, eicosapentaenoic acid (EPA)
-
Characteristics of morphodynamic conditions in the shallows of Puck Bay (southern Baltic Sea) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Ewa Szymczak,Maria Rucińska
Abstract Puck Bay is an unusual and thus interesting coastal water region, as it combines two different environments – a lagoon and the sea. They differ from each other in their seabed morphology, salinity, dynamics and water exchange. Their common elements are the extensive shallows and the vicinity of the Hel Peninsula. The shallows of Puck Bay have developed at various stages of its evolution, which
-
Distribution and ecology of two interesting diatom species Navicula flandriae Van de Vijver et Mertens and Planothidium nanum Bąk, Kryk et Halabowski in rivers of Southern Poland and their spring areas Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Dariusz Halabowski,Małgorzata Bąk,Iga Lewin
Abstract In this paper, we report new records of rare diatoms that have recently been found in Southern Poland. Planothidium nanum was found only in the upper reaches of the Centuria River, which is not exposed to human influence, while Navicula flandriae was found in two rivers (the Bolina and the Mleczna) affected by salt mine water from hard coal mines. The impact of anthropogenic salinity on diatom
-
Biology of the thornback ray (Raja clavata Linnaeus, 1758) in the North Aegean Sea Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Koray Cabbar,Cahide Çiğdem Yiğin
Abstract The study deals with aspects of the population dynamics in the thornback ray (Raja clavata L., 1758), one of the most abundant cartilaginous fish caught in the North Aegean Sea. Females accounted for 73.08% and males 26.92% of all individuals. Total length of females and males ranged between 50.2 and 89.9 cm (disc width: 33.4–62.0 cm), and between 43.1 cm and 82.7 cm (disc width: 30.7–64.2
-
The foraminiferal record in the Holocene evolution of the Mecklenburg Bay (south-western Baltic Sea) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Robert Kostecki,Teresa Radziejewska
Abstract Foraminiferal assemblages were analyzed in a 620-cm long core retrieved from the central part of the Mecklenburg Bay (MB, south-western Baltic Sea) to aid in the reconstruction of environmental changes occurring in the area during the Holocene and to complement a set of previously investigated palaeoenvironmental proxies. A total of five foraminifera-based stratigraphic units were identified
-
Distribution of Didymosphenia, Gomphonema and Gomphosphenia diatoms (Bacillariophyta) in Turkish inland waters Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Cüneyt Nadir Solak,Agata Z. Wojtal,Mateusz Rybak,Elif Yılmaz
Abstract In this study, a total of 53 taxa were identified from 13 catchments in Turkey. Gomphonema affine var. rhombicum E.Reichardt, G. angusticephalum E.Reichardt & Lange-Bertalot, G. calcifugum Lange-Bertalot & E.Reichardt, G. elegantissimum E.Reichardt & Lange-Bertalot, G. exilissimum (Grunow) Lange-Bertalot & E.Reichardt, G. graciledictum E.Reichardt, G. italicum var. densistriatum Levkov, Mitic-Kopanja
-
Effects of copper and cadmium on physiology and antifouling defense of the marine macroalga Ulva reticulata Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Wejdan Ahmed Al-Khaldi,Lafi Al Solami,Sathianeson Satheesh
Abstract Heavy metals are major stressors for benthic macroalgal communities in marine ecosystems. In this study, the effects of copper and cadmium on some physiological parameters along with antifouling defense of the marine macroalga Ulva reticulata were assessed under laboratory conditions. Macroalgal samples were treated with three concentrations (1 mg l−1, 3 mg l−1 and 5 mg l−1) of copper and
-
Incidence of skeletal deformities in induced triploid rainbow trout Oncorhynchus mykiss (Walbaum, 1792) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Krzysztof Jagiełło,Marcin Polonis,Konrad Ocalewicz
Abstract Due to the cytogenetic incompatibility, triploid fish are usually infertile and are not affected by a decline in growth, survival and meat quality, which accompanies the process of sexual maturation in diploid specimens. Thus, artificial triploidization has been proposed for fish production in the case of species with early sexual maturation, such as rainbow trout. However, the use of this
-
Inter-clutch egg differences and androgenesis in rainbow trout (Oncorhynchus mykiss, Walbaum 1792) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Marcin Polonis,Agata Błaszczyk,Krzysztof Jagiełło,Ligia Panasiak,Stefan Dobosz,Konrad Ocalewicz
Abstract Ionizing radiation (IR) is applied to inactivate the nuclear genome in rainbow trout eggs during induced androgenetic development. However, IR-generated reactive oxygen species (ROS) may affect developmental potential of eggs and reduce the effectiveness of androgenesis. To verify this assumption, androgenetic development of rainbow trout was induced in eggs irradiated with 350 Gy of X-rays
-
Stock mapping, size structure and biological parameters of the clam Polititapes aureus in the shellfish production area of the southern Tunisian waters (Central Mediterranean) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Abdelkarim Derbali,Othman Jarboui
Abstract The clam Polititapes aureus is one of the most abundant shellfish species in the southern Tunisian waters. Its current exploitation status and management are becoming a major concern for fishing industry in Tunisia. The significant ecological role of the species and possible future commercial benefits require a better knowledge of its stock. This research is the first attempt to investigate
-
Determination of heavy metals in some tissues of four fish species from the Karasu River (Erzincan, Turkey) for public consumption Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-06-01 Özge Zencir Tanır
Abstract The study aimed at determining the concentration of heavy metals in muscle, liver, and gill tissues of four fish species (Acanthobrama marmid, Capoeta umbla, Capoeta trutta and Chondrostoma regium) collected from five sites in the Karasu River, Erzincan, between July 2019 and January 2020. The relationships between fish size (length and weight) and metal concentrations in the tissues were
-
Accumulation of heavy metals in tilapia fish species and related histopathological changes in muscles, gills and liver of Oreochromis niloticus occurring in the area of Qahr El-Bahr, Lake Al-Manzalah, Egypt Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Amal M. Yacoub, Soaad A. Mahmoud, Amaal M. Abdel-Satar
Accumulation of metals (Fe, Zn, Cu, Mn, Pb, Cd and Ni) in the muscles and gills of Oreochromis niloticus , Oreochromis aureus and Tilapia zillii was assessed based on seven locations in the Qahr El-Bahr area in Lake Al-Manzalah. The average accumulation of metals was in the following order: Tilapia zillii > Oreochromis aureus > Oreochromis niloticus . To determine the risk of fish consumption, the
-
Variation in radical antioxidant capacity and the total amount of carotenoids in razor clams, Ensis marginatus (Pennant, 1777), from the Çanakkale Strait (Abidealtı), Turkey Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Bayram Kizilkaya, Sefa Acarli, Pervin Vural Ertuğrul, Selçuk Berber, Pınar Çelik
Metabolic activities such as breathing and digestion, resulting from natural functions of the body through oxidation, lead to the formation of free radicals that cause cancer, premature cardiac aging and some chronic diseases. Antioxidants are substances that remove free radicals and prevent cell damage. Seafood significantly contributes to the elimination of free radicals, especially owing to its
-
Monitoring of the trophic ecology of pipefish species (Syngnathus abaster, Syngnathus acus) in an alluvial lake habitat (Lake Bafa, Turkey) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Sule Gurkan, Deniz Innal, Iskender Gulle
The present study investigated the trophic ecology of two species living in an alluvial lake ecosystem in terms of season, length groups, sex, and mouth morphology. The fish were caught in a coastal lake area between December 2014 and March 2016 using a seine. In general, C. aquaedulcis was the most important prey for S. abaster , accounting for 10.99% of all prey, while amphipods accounted for 54
-
Reproductive biology of Penaeus kerathurus (Forskål, 1775) (Decapoda: Penaeidae) in the Sea of Marmara, Turkey Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Mukadder Arslan Ihsanoglu, Ismail Burak Daban, Ali Işmen, Koray Cabbar, Cahide Çiğdem Yığin
One of the economically important species is Penaeus kerathurus (Forskål, 1755), which is widespread in the Mediterranean ecosystem. This paper presents results of research on reproductive biology of Penaeus kerathurus in the Sea of Marmara. A total of 1404 specimens were dissected to determine the maturity stages, reproduction time, and length at first reproduction. The female-to-male ratio was 1:0
-
Phylogenetic characteristics of selected European huchen (Hucho hucho L.) broodstocks – implication for broodstock management Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Marcin Kuciński, Dorota Fopp-Bayat
European huchen ( Hucho hucho ) is a representative of large and rare migratory salmonid fish, which has become endangered due to extensive anthropogenic changes in freshwater ecosystems. Numerous broodstocks of the European huchen have therefore been established throughout the species’ range in recent years to supplement wild fisheries of this species. Unfortunately, this conservation management strategy
-
A review of research on the Lemanea genus in Serbia Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Aleksandra B. Mitrović, Nevena B. Đorđević, Snežana B. Simić
The first data on the Lemanea genus in Serbia come from the late 20th century. Only one species, L. fluviatilis , was reported from 10 localities in Serbian riverine ecosystems between 1991 and 2017. Extensive research on this genus was performed in April–November 2017–2019, surveying 150 localities in 97 upland and mountain rivers. During this study period, the Lemanea genus was recorded at 14 localities
-
Soft-bottom crustacean fauna from the Turkish coast of the Black and Marmara seas with new records Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Aysegul Mulayim
It is becoming increasingly important to monitor zoobenthic biodiversity in seas that are under industrial and anthropogenic pollution pressure, such as the Black Sea and the Marmara Sea. This study covers crustacean species in the Turkish waters of the Black Sea and the Marmara Sea, both of which are closed systems. Sampling was carried out in July–August 2019 and yielded 32 crustacean species from
-
Macrophytes as a tool for assessing the trophic status of a river: a case study of the upper Oum Er Rbia Basin (Morocco) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Ayoub Nouri, Hammada Soumaya, Chillasse Lahcen, Haddioui Abdelmajid
Macrophytes are one of the main components of the aquatic ecosystem. They are used in several countries as metrics for the ecological assessment of hydrosystems. The objective of our study was to evaluate the suitability of the Macrophyte Biological Index for Rivers (IBMR) to determine a trophic level in the upper Oum Er Rbia basin (Morocco) and to understand physicochemical parameters of water that
-
Reproductive biology of the rayed pearl oyster (Pinctada imbricata radiata, Leach 1814) in Izmir Bay Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Selcuk Yigitkurt
The present study was carried out to determine gonadal stages and quality of pearl oyster meat ( Pinctada imbricata radiata , Leach, 1814) in Izmir Bay (Turkey). Pearl oyster samples were collected from the study area at a depth of ~5 m between February 2013 and January 2014. The highest and lowest temperature was measured in July and January as 27°C and 14.2°C, respectively. The maximum chlorophyll
-
Spatio-temporal variation of microphytoplankton communities in Obhur Creek, the central Red Sea Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2021-03-01 Mohsen M. El-Sherbiny, Mamdouh A. Al-Harbi, Anand J. Kumar
The abundance and distribution of microphyto-plankton and related physicochemical factors were assessed monthly in Obhur Creek, the central Red Sea. Sampling was carried out near the entrance, the middle and end parts of the creek. During the course of the present study, the Red Sea was characterized by predominantly oligotrophic conditions. Nutrient concentrations were relatively higher in the end
-
The role of abiotic and biotic factors in interspecific competition of Polish crayfish – comprehensive literature review Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Kamil Wiśniewski, Daniel Szarmach, Małgorzata Poznańska-Kakareko
Abstract Invasive species are those that have been transferred by humans out of their natural range. Native crayfish species in Polish waters include: Astacus astacus and Pontastacus leptodactylus, whereas invasive species are: Pacifastacus leniusculus, Faxonius limosus, Procambarus clarkii and Procambarus virginalis. The objective of this study was to determine how abiotic and biotic environmental
-
First record of Wiedemannia ljerkae Ivković et Sinclair, 2017 (Diptera: Empididae) from Albania with an updated checklist of aquatic dance flies occurring in the country Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Iwona Słowińska, Radomir Jaskuła
Abstract Wiedemannia ljerkae Ivković et Sinclair, 2017 is recorded from Albania for the first time (Sarandë District). The updated checklist of aquatic Empididae (Clinocerinae and Hemerodromiinae) from this country is provided. The potential diversity of the Albanian fauna of dance flies is discussed based on a comparison with faunas of neighboring countries.
-
Phosphorus forms in the sediment of seagrass meadows affected mainly by fungi rather than bacteria: a preliminary study based on 31P-NMR and high-throughput sequencing Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Muqiu Zhao, Hui Wang, Shuai Wang, Qiuying Han, Yunfeng Shi
Abstract Microorganisms play an important role in the circulation of phosphorus (P) in the sediment of coastal wetland ecosystems. In this study, solution 31P nuclear magnetic resonance (NMR) was used to determine different forms of P in the sediments of four different seagrass meadows and a bare tidal flat, while high-throughput 16S and ITS rRNA gene sequencing was used to determine the microbial
-
Seasonal and annual variability in chlorophyll-a in the shelf region of the Northern Bay of Bengal using MODIS-Aqua data Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Muhammad Abdur Rouf, Al-Hasan Antu, Imran Noor
Abstract Chlorophyll-a (Chl-a) concentration is an important issue in ocean ecosystem management and research. This study investigates seasonal and annual variability in Chl-a and its relationship with sea surface temperature (SST) and river discharge in the shelf region of the Northern Bay of Bengal (BoB), as well as validates satellite data against in-situ data. Moderate Resolution Imaging Spectroradiometer
-
First recorded bloom of Akashiwo sanguinea (Dinophyceae) from the Cochin backwaters, a tropical estuarine system along the South Eastern Arabian Sea Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Twinkle Sathish, Lathika Cicily Thomas, Aishwarya, Niya Benny, K.B. Padmakumar
Abstract Akashiwo sanguinea, a cosmopolitan red tide-forming dinoflagellate, is reported for the first time as a bloom from the Cochin estuary along the South Eastern Arabian Sea. Monthly sampling showed the continuous presence of A. sanguinea with occasional blooms. Blooms of A. sanguinea with the highest abundance of 2.8 × 105 cells l−1 were observed during the monsoon season (June 2019) with chlorophyll
-
Growth parameters of invasive gibel carp Carassius gibelio (Bloch, 1782) in Lake Marmara (Turkey) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Ali Ilhan, Hasan M. Sarı, Irmak Kurtul
Abstract The objective of this study was to determine growth parameters, such as age–length and length–weight relationships, as well as condition factors and sex ratio, of the Carassius gibelio (Bloch, 1782) population in Lake Marmara (western region of Turkey), which is one of the most important fishing areas. Fish were caught on a monthly basis by gillnets and trammel nets (mesh size 10–50 mm) between
-
Spatio-temporal variation in the distribution and abundance of marine cladocerans in relation to environmental factors in a productive lagoon (Güllük Bay, SW Aegean Sea, Turkey) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Nurçin Killi
Abstract In order to understand the effects of some physical (temperature and salinity) and chemical (dissolved oxygen, nitrate and chlorophyll a) factors on the abundance and distribution of cladoceran species, zooplankton samples were seasonally collected between August 2015 and July 2016 from three stations near the entrance to the Boğaziçi Lagoon in Güllük Bay (Aegean Sea, Turkey) using a WP2 plankton
-
Development of an adaptive neuro-fuzzy inference system (ANFIS) model to predict sea surface temperature (SST) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Semih Kale
Abstract An accurate estimation of the sea surface temperature (SST) is of great importance. Therefore, the objective of this work was to develop an adaptive neuro-fuzzy inference system (ANFIS) model to predict SST in the Çanakkale Strait. The observed monthly air temperature, evaporation and precipitation data from the Çanakkale meteorological observation station were used as input data. The Takagi–Sugeno
-
Influence of land development on the ecological status of small water bodies Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Anna Dudzińska, Barbara Szpakowska, Maria Pajchrowska
Abstract Small water bodies play a specific role in the landscape, as they increase the mosaic pattern of a given area, retain water and affect hydrological regime in adjacent soils. These water bodies are the most important in landscapes that have been largely transformed by man, such as agricultural and urban landscapes. The author of this study assessed the ecological status of small water bodies
-
Response of the rotifer community to human-induced changes in the trophic state of a reservoir Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-12-16 Seong-Ki Kim, Jeong-Cheol Kim, Gea-Jae Joo, Jong-Yun Choi
Abstract Human disturbance and nutrient runoff lead to water pollution, particularly in downstream waters and reservoirs. We hypothesized that increased human activity in summer would affect the trophic state of downstream reservoirs, affecting the interannual species composition of rotifers. We used long-term data for the Unmun Reservoir in South Korea (2009–2015), which is increasingly affected by
-
Sampling native and non-native mobile epifauna with baited traps and habitat collectors – Port of Gdynia case study (southern Baltic Sea, Poland) Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-09-01 Monika Normant-Saremba, Joanna Hegele-Drywa, Lena Marszewska
Abstract The effectiveness of two artificial habitat collectors, crab condo (HC1) and habitat crate (HC2), providing a refuge for small mobile fauna, was tested along with two commercial baited traps, Chinese box trap (BT1) and Gee’s Minnow trap (BT2) recommended for only single deployments under a harmonized survey of the Baltic and the North-East Atlantic. Our objective was also to determine whether
-
Biodiversity of benthic diatom flora in the coastal zone of Puck Bay (southern Baltic Sea): a case study of the Hel Peninsula Oceanol. Hydrobiol. Stud. (IF 0.9) Pub Date : 2020-09-01 Małgorzata Witak, Jarosław Pędziński, Sandra Oliwa, Dominika Hetko
Abstract The paper presents the results of the analysis of diatoms from surface sediments (stones, sands) and macroflora (seagrass, macroalgae) collected at 16 sampling sites located along the inner coastal zone of Puck Bay (southern Baltic Sea) along the Hel Peninsula. The main diatom species of epilithon, epipsammon and epiphyton were characterized with respect to their autecological preferences