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Evaluation of the efficacy of X-ray irradiation on male testes of Mediterranean fruit fly using light and transmission electron microscopy Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2024-01-21 Heba A.S. Elelimy, Ahlam Gabarty, Amira AKH Negm
The present study is to evaluate the efficacy of X-ray irradiation on testes of Ceratitis capitata (resulted from irradiated pupae) exposed to doses of 0 (control), 60.7, 137, 156.9, 237.7, 300.59 ...
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First observation of pedal laceration in the octocoral Sarcophyton sp. Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2024-01-12 Nami Okubo
Cnidarians exhibit various patterns of asexual reproduction. Pedal lacerations have been reported in corallimorpharians and sea anemones. Here, I report the occurrence of pedal lacerations in two c...
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The mytilid bivalve Mytilus trossulus exhibits area-specific proportions of heteromorphic spermatozoa in the Sea of Japan Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2024-01-02 Evegenia Vekhova, Konstantin Kiselev, Yana Alexandrova, Anna Akhmadieva, Yulia Reunova, Arkadiy Reunov
The present study is devoted to a comparison of the structure and quantitative ratio of heterogeneous spermatozoa of native wild mussels Mytilus trossulus Gould, 1850, collected in four areas of th...
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Reproductive features of Rumina decollata (Pulmonata: Achatinidae) from Adana, Turkey Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-12-26 İhsan Ekin
This study provides data on Rumina decollata (Linnaeus, 1758), focusing on reproductive parameters, and developmental features of eggs and offspring. Following collection from citrus orchards in Ad...
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Population biology of the porcelain crab Pachycheles laevidactylus Ortmann, 1892 (Anomura: Porcellanidae) in the Southwestern Atlantic Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-11-22 E.E.D. Mosna, M.C.A. João, P. Hernáez, L.A.A. Ferreira, A. Noori, M.A.A. Pinheiro
A population of the porcelain crab Pachycheles laevidactylus was evaluated based on sex ratio, sexual dimorphism, reproductive intensity, relative growth and sexual maturity. The porcelain crabs we...
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The pre-oviposition period is associated with ovary maturation in Cryptolaemus montrouzieri Mulsant, 1850 (Coleoptera: Coccinellidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-11-22 Maria Luiza Ferraz dos Santos, Jefferson Rodrigues-Pedrosa, Wendel J. Teles Pontes
The pre-oviposition period is critical in the development of reproductive organs in ladybirds, but there is little information about the main causes of this period. The pre-oviposition period in th...
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Size-dependent growth and fecundity variations of three land snails: implications for population management Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-08-04 Gargi Nandy, Soujita Pramanik, Sampa Banerjee, Himangshu Barman, Gautam Aditya
Size class dependent variations of growth and fecundity of three small land snails, Allopeas gracile (Hutton 1834) (Gastropoda: Subulinidae), Succinea daucina (Pfeiffer, 1855) (Gastropoda: Succinei...
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Correction Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-07-27
Published in Invertebrate Reproduction & Development (Vol. 67, No. 1-2, 2023)
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Effects of cocoon incubation angle on hatching success of medicinal leeches (Hirudo spp.) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-07-27 Mustafa Ceylan, Ramazan Küçükkara, Emin Karataş
Protocols for hirudiculture have not been fully established; many issues need to be investigated. The present study aimed to determine the effects of the cocoon incubation angle (CIA) on hatching s...
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Onset of morphological sexual maturity, sexual dimorphism and relative growth of the freshwater crab Fredius ibiapaba (Decapoda: Pseudothelphusidae) from a humid enclave area of Northeastern Brazil Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-07-21 Livanio Cruz dos Santos, Whandenson Machado Do Nascimento, Damares Ribeiro Alencar, Allysson Pontes Pinheiro, José Roberto Feitosa Silva
We investigate the onset of morphological sexual maturity, sexual dimorphism and relative growth of the freshwater crab Fredius ibiapaba. We collected the specimens bimonthly between August 2017 an...
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Latitudinal variation in reproductive performance of hermit crabs (Anomura: Paguroidea) in two marine provinces along the Brazilian coast Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-07-16 Felipe Bezerra Ribeiro, Helena Matthews-Cascon, Fernando Luis Mantelatto, Luis Ernesto Arruda Bezerra
We performed a comparative analysis of fecundity and reproductive effort of two hermit crab species, Clibanarius antillensis and Calcinus tibicen, distributed along the two marine provinces in Braz...
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Testosterone concentration and aromatisation efficiency at different stages of gonad development: a case study with Mytilus edulis trossulus Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-07-04 Paulina Goździk, Katarzyna Smolarz, Lucyna Konieczna, Anna Hallmann
Sex steroid hormones occur in the bivalve tissues. Testosterone (T), various oestrogens, and progesterone have been reported in this group of organisms and the amounts of these hormones have been c...
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Reproductive quality evaluation of male Indian white prawn Penaeus indicus broodstock fed diets supplemented with polychaete extracts (Marphysa sp.) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-06-23 Sheryll S. Santander-Avanceña, Rex Ferdinand M. Traifalgar, Erish G. Estante-Superio, Steve P. Janagap, Roger Edward P. Mamauag, Harold M. Monteclaro, Liberato V. Laureta, Gerald F. Quinitio
The present study determined the effect of different polychaete extracts, namely, total soluble fraction (TSF), neutral lipid fraction (NLF) and polar lipid fraction (PLF), in the maturation and sp...
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Production of juveniles of the freshwater, egg-laying lymnaeid snail Radix plicatula as prey for the juveniles of Whitman leech (Whitmania pigra) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-06-14 Liangwei Xiong, Yi Zheng, Shuaibing Wang, Guanglai Zhu, Haihua Wang
ABSTRACT The leech Whitmania pigra is well known in traditional Chinese medicine for promoting human blood circulation and alleviating blood stasis. To evaluate its suitability as bait for this neonate leech, we investigate the reproductive efficiency of the snail Radix plicatula under laboratory conditions. Furthermore, the effects of the size of R. plicatula on the growth of newborn W. pigra were
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Relative growth and sexual maturity of the spider crab Libinia spinosa Guérin, 1832 (Brachyura: Majoidea: Epialtidae), from the Southeast Brazilian coast Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-02-15 Mateus Pereira Santos, Vivian Fransozo, Geslaine R. L. Gonçalves, Rogério Caetano da Costa, Maria Lucia Negreiros-Fransozo
ABSTRACT We investigated the relative growth and sexual maturity (gonadal and morphometric) of Libinia spinosa. Crabs were sampled at Ubatuba from January to December 2000, using trawls. Based on allometric growth, males were grouped into juveniles (MJ), adolescents (MAd) and adults (MA) based on the relationship CPL (major cheliped propod length) vs. CW (cephalothorax width), all with positive allometric
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Parameters of the Spondylus limbatus GB Sowerby II, 1847, population in the Central-West Gulf of California, Mexico Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2023-01-27 Marcial Villalejo-Fuerte, Marcelino Ruiz Domínguez, Gladys Guadalupe Cota Hernández, Felipe Neri Melo Barrera, Nurenskaya Vélez-Arellano, Marcial Arellano-Martínez, Arturo Tripp-Quezada
ABSTRACT The main Spondylus limbatus population parameters were estimated based on the analysis of individual growth and reproductive aspects of specimens collected monthly (n = 30) from January to December 2009 in the fishing area of Agua Verde, Gulf of California. The size structure determined from shell measurements was 82–167 mm and the direct reading of shell sections indicated ages of 1–14 years
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Comparative transcriptomes analysis of the ovary reveals potential ovarian development-related genes and pathways in Macrobrachium rosenbergii Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-12-26 Yan-Hao Yang, Rui Wang, Ming Li, Hui-Zan Yang, Guang-Hua Huang, Ke-Yi Ma, Gao-Feng Qiu, Yong Lin
ABSTRACT The giant freshwater prawn (Macrobrachium rosenbergii), which is widely distributed in Southeast Asia and the western Pacific, is an important commercial prawn species. However, the molecular mechanism of ovarian development is unclear, and available data on the ovarian transcriptome of M. rosenbergii are limited. In this study, we constructed transcriptomes of female (ZW) and super female
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Relative growth and morphological sexual maturity of the crab Hepatus pudibundus (Herbst, 1785) (Decapoda: Aethridae) in southeast Brazil Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-11-11 Milena Silva Jaconis, Caio Santos Nogueira, Gabriel Vieira Martins Rezende-Gois, Julia Fernandes Perroca, Rogerio Caetano Costa
ABSTRACT The crab Hepatus pudibundus is a bycatch of the shrimp fishing industry, and despite having no commercial value, it is impacted by fishing activities. In this way, research about relative growth and sexual maturity can help to understand the life cycle of fisheries-affected species. Thus, the present study aimed to estimate morphological sexual maturity (MSM) and analyse the relative growth
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‘Insecticidal efficacy of a hormonal analogue on the post-embryonic development of a flesh fly, Sarcophaga ruficornis (Diptera: Sarcophagidae)’ Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-10-18 K. P. Singh, Rahul Maddheshiya
ABSTRACT Sarcophaga ruficornis (Fabricius 1794) causes myiasis in humans and other vertebrates. It has a wide distribution across tropical countries. In the present investigation, the effect of a juvenile hormone analogue, fenoxycarb has been observed on the last instar larvae of S. ruficornis. The last instar larvae (0, 1 and 2-days old) of this dipteran fly were treated topically with sub-lethal
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Fecundity and reproductive patterns of the fiddler crab Uca maracoani Latreille 1802-1803 in an Amazonian estuary in northern Brazil Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-09-22 Daiane Aviz, Priscila Amorim Carmona, Ana Caroline de Castro Barbosa, Cléverson Rannieri Meira dos Santos
ABSTRACT In this study, aspects of the reproductive biology of a Uca maracoani population from northern Brazil were examined. Ovigerous females monthly captured from December 2013 to November 2015 were measured and dissected to count, collect morphometric data, and classify the eggs. Ovigerous females were encountered throughout the two-year period but were absent during the months with the highest
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Growth and reproduction in the land snail Allopeas gracile (Hutton 1834): a laboratory appraisal Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-08-28 Gargi Nandy, Gautam Aditya
ABSTRACT The growth and reproduction of the graceful awl snail Allopeas gracile (Hutton 1834) (Gastropoda: Subulinidae) were evaluated in the laboratory. Observations on single individual and multiple individuals showed similar growth pattern fitted with the von Bertalanffy growth model. A fecundity schedule of the snail was constructed using the daily reproductive outputs of the snails in cohort and
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Multiple spawning of the red swamp crayfish Procambarus clarkii (Decapoda: Cambaridae) under laboratory conditions Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-07-29 Katsuyuki Hamasaki, Sota Nishimoto, Shigeki Dan
ABSTRACT A season-independent juvenile supply system is required for developing the aquaculture of the red swamp crayfish Procambarus clarkii. The present study aimed to test if P. clarkii females can spawn multiple times under a constant temperature (25°C) and photoperiod (14 L: 10D) – conditions that are suitable for their reproduction. When a female developed glair glands on the underside of its
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Do field collected immature stages of Aedes mosquitoes exhibit correspondence of the life-history traits? Observations from Kolkata, India Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-07-27 Sampa Banerjee, Soujita Pramanik, Goutam K. Saha, Gautam Aditya
ABSTRACT Entomological monitoring of dengue vectors Aedes aegypti (Linnaeus, 1762) and Ae. albopictus (Skuse, 1894) (Diptera: Culicidae) provides crucial information on the life-history traits (LHTs). An assessment of the LHTs of Aedes mosquitoes was accomplished using randomly collected immature stages from various larval habitats of Kolkata, India. Out of 104 larval habitats ~43% were exclusive for
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Reproductive biology of the red starfish Echinaster sepositus (Echinodermata, Asteroidea) from the Algerian west coast Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-06-26 Karim Mezali, Zineb Lebouazda, Hocine Benzait, Dina Lila Soualili
ABSTRACT This work aims to describe for the first time the reproductive biology of the red starfish Echinaster sepositus at the western region of Algeria (Mostaganem). The population of E. sepositus is characterized by a sex ratio of 1:2 (female: male). The relation between arm length and wet body weight indicate a negative allometric growth. Histological study reveals six stages of sexual maturity
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Effects of nutritional stress on reproductive output in the scorpion Tityus pusillus Pocock, 1893 (Scorpiones, Buthidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-06-09 André O. Silva-Júnior, Michael Seiter, André F.A. Lira, Wendel J. Teles Pontes
ABSTRACT Nutritional stress in females may have adverse reproductive effects such as reduced fertility and high juvenile offspring mortality. In this study, we investigated the effects of dietary stress on the reproductive output of the scorpion Tityus pusillus Pocock, 1893, in which we tested the hypothesis that compared with well-fed females, those subjected to nutritional stress would have a longer
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Bioefficacy of gamma radiation on Spodoptera littoralis (Lepidoptera: Noctuidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-05-11 Dina Housam Abd El-Monem Ahmed
ABSTRACT The application of nuclear techniques to control one of the most important lepidopteran insect pests: the Egyptian cotton leafworm, Spodoptera littoralis is discussed in this study. All experiments had the objective of finding the dose of gamma radiation capable of causing sterility in the first generations by irradiating the parental generation. For S. littoralis, 6th instar larvae were irradiated
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Developmental inhibitory effect of the Syzygium aromaticum essential oil on the postembryonic stages of a polyphagous pest, Pericallia ricini (Lepidoptera: Arctiidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-05-10 Deep Mala Sahu, K.P. Singh
ABSTRACT The chemical composition of Syzygium aromaticum essential oil (EO), and its efficacy on the development and metamorphosis of polyphagous pest, Pericallia ricini was assessed. The chemical composition of the S. aromaticum EO was analysed by gas chromatography and mass spectrometry method. The major volatile components present in the EO were eugenol, β-caryophyllene, caryophyllenyl alcohol,
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Gametogenic cycle of the marine gastropod Trophon geversianus in a harsh Patagonian intertidal environment Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-05-06 Mariano Cumplido, María Cristina Damborenea, Gregorio Bigatti
ABSTRACT The edible marine gastropod Trophon geversianus shows a large geographic distribution along the southern tip of South America, inhabiting both rocky intertidal and shallow subtidal zones, with distinct behavioural responses to environmental stressful conditions (desiccation, temperature amplitude and high irradiation). Nevertheless, its reproductive biology has been poorly reported to date
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Distribution of astaxanthin in the spiny lobster Jasus lalandii: trends during biological cycles Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-04-01 Heather G. Marco, Lutz Auerswald, T. Given Matumba, Gerd Gäde
ABSTRACT Astaxanthin, the dominant carotenoid pigment in the South African spiny lobster, Jasus lalandii, was quantified in haemolymph and tissue extracts by means of reverse phase-high pressure liquid chromatography and analysed with respect to growth and reproduction cycles of adults. Haemolymph, exoskeleton, muscle, gonads and hepatopancreas from both sexes, as well as egg parcels from berried females
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Development and ontogenetic changes of feeding behaviour during juvenile early growth of Eupolymnia nesidensis (Annelida, Terebellidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-04-01 Andrea Toso, Adriana Giangrande
ABSTRACT Reproduction of the terebellid Eupolymnia nesidensis was investigated in a population from the Ionian Sea (Mediterranean, South Italy). This species has a worldwide distribution and is very common on Mediterranean hard substrata covered by algae. Observations revealed a spawning period across springtime with lecithotrophic development occurring inside a jelly mass, with eggs measuring 210 μm
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Ultrastructure of spermatozoa of a hairworm Gordionus alpestris (Villot, 1885) (Nematomorpha, Chordodidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-03-13 Elena A. Sokolova, Julia K. Zograf, Vladimir V. Yushin
ABSTRACT Sperm ultrastructure of the hairworm Gordionus alpestris (Nematomorpha, Chordodidae) was studied. Spermatozoa are elongated aflagellate cells of clavate shape. Their dilated anterior part consists of an acrosomal complex comprising an apical acrosomal vesicle and axial acrosomal tube enveloped by an acrosomal sheath of four membrane-bound compartments. The basal part of the tube contains a
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Description of the postmarsupial manca stages of Armadillidium ficalbii (Crustacea, Isopoda, Oniscidea) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-02-27 Giuseppe Montesanto, Federico Riva
ABSTRACT The postmarsupial manca stages of Armadillidium ficalbii Arcangeli, 1911 were studied in detail by morphological analysis. Ovigerous females were reared separately under controlled conditions, allowing us to follow the stages of development from release from the marsupium until the appearance of the first juvenile stage, identified by the full development of the seventh pair of pereopods.
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Biometry, size structure and reproductive cycle of the sanded sea cucumbers Holothuria poli (Echinodermata, Holothuriidae) from the west Algerian coast Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-02-22 Karim Mezali, Zineb Lebouazda, Farah Slimane-Tamacha, Dina Lila Soualili
ABSTRACT The aim of this work is to study the biometric and reproductive characteristics of a population of Holothuria poli from the west Algerian coast. The study was carried out on 256 individuals (33.25 ± 12.38 g wet weight and 196.44 ± 37.81 mm relaxed length) collected from Oran Bay between October 2016 and September 2017. All individuals showed negative allometric growth (b = 1.586) and the population
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Experimental evidence suggesting temperature-driven dormancy in the planktotrophic larvae of the sea cucumber Isostichopus fuscus Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-02-16 Jean-François Hamel, Annie Mercier
ABSTRACT While larval ecology is central to the population dynamics of marine benthic species with multiphasic life histories, the adaptations of larvae to environmental variability remain incompletely understood in many species. Using the holothuroid echinoderm (sea cucumber) Isostichopus fuscus, we examined how a planktotrophic species can use pre-competency plasticity to withstand suboptimal conditions
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Notes on the morphological changes in the oocyte of the polychaete Perinereis wilsoni (Glasby and Hsieh 2006) from spawning to the early larval stage Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-02-06 Gaudioso Pates, Mercedes Maceren-Pates
ABSTRACT Perinereis wilsoni is a nereidid polychaete species with segments that are completely separated from each other by a septum. Recent molecular studies on this species discussed the mechanism of male and female germ cell development and germ cell regeneration. Although several molecular studies have been conducted on this species, its embryonic and larval development have not yet been described
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Cloning and expression analysis of the HSL gene in Whitmania pigra (Annelida: Hirudinea) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-02-02 Li-Yuan Guo, Qiao-Sheng Guo, Hong-Zhuan Shi, Feng Yang, Yi-Xiu Miao
ABSTRACT Hormone-sensitive lipase (HSL) is the rate-limiting enzyme of lipolysis, which has a certain effect on the reproductive development of parthenogens. To study the effect of HSL on gonad development in Whitmania pigra, a synchronous hermaphrodite, the Whitmania pigra HSL gene was cloned. The cloned Wpi-hsl has a total length of 2492 bp, and the ORF encodes a protein of 787 aa. It is predicted
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Sustainability of development, survivability, and biomass are a function of temperature and diet: implications in Tribolium confusum (Coleoptera: Tenebrionidae) with benefits for its management strategy Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-01-27 El-Sayed H. Shaurub, Genan M. Abou Gharsa, Magda M. Sabbour
ABSTRACT Temperature and nutrition are two prominent environmental variables influencing insect life from development to reproduction. Here, we assessed various components of fitness (developmental times, survival rates, egg production, and weight gain) of Tribolium confusum fed on wheat, barley or corn flour at 15, 27 and 35°C with a view of understanding its level of susceptibility. The shortest
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Cloning and expression analysis of juvenile hormone epoxide hydrolase-like (EsJHEH-like) from Eriocheir sinensis, and its potential roles in methyl farnesoate metabolism Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-01-25 Tiantian Chen, Yingzhu Diao, Ruihan Xu, Na Sheng, Fan Liu, Qiming Xie, Shiping Su, Keyi Ma, Xilei Li
ABSTRACT The sesquiterpenoid methyl farnesoate (MF), a crustacean equivalent of juvenile hormone (JH III), plays important roles in regulating many physiological processes in crustaceans, especially ovarian development and reproduction. Previous research indicates that degradation of MF in crustaceans is similar to JH III degradation, and involves specific carboxylesterases. Juvenile hormone esterase
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Reproductive behaviour of the North African freshwater crab Potamon algeriense (Bott, 1967) (Brachyura: Potamidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2022-01-18 Soufiane Fadlaoui, Ouahid El Asri, Mohammed Melhaoui
ABSTRACT Laboratory and field observations of courtship, copulation, spawning, incubation, and maternal care were made on the endemic North African freshwater crab Potamon algeriense. Mating occurred throughout the year but no discernible courtship behaviour was recorded. However, a forced copulation strategy is practiced by the larger males. The occurrence of ovigerous females extended from June to
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Sexual reproductive behaviours of tardigrades: a review Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-11-22 Kenta Sugiura, Midori Matsumoto
ABSTRACT The first observation of sexual reproductive behaviour of a tardigrade was reported in 1895, and much knowledge on this topic has accumulated since then. Up to the 2000s, these observations were described in detailed reports including text, sketches and photographs. Then, innovative video recordings were made in 2016 of the reproductive behaviours of tardigrades that oviposit their eggs into
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The anatomy and histology of the reproductive system of Aplysia oculifera (Mollusca: Heterobranchia: Aplsiida) from the Red Sea coastal waters Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-11-25 Alaa Y. Moustafa, Safa El-Masry
ABSTRACT Aplysia oculifera is an endemic sea hare that inhabits the Egyptian coast of the Red Sea. We describe the reproductive system of this species for the first time. It is composed of an ovotestis, small hermaphroditic duct, nidamental glandular complex, large hermaphroditic duct, gametolytic gland, external seminal groove and cephalic penis. The follicles within the ovotestis contain spermatogenic
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Facultative planktotrophy in larvae of the purple mussel Perumytilus purpuratus Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-11-21 Sebastián Larrea-Meza, Bernardita Campos, Donald I. Brown
ABSTRACT The developmental pattern in the mid-intertidal mussel Perumytilus purpuratus was investigated through laboratory cultures. Larval development, growth, survival rate, and time to reach the post-larval stage were determined using triplicated feeding/non-feeding treatments in artificial seawater at 18.2 ± 0.5°C. Development of the larval digestive system was examined histologically. We found
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Effect of Lantana camara essential oil on embryogenesis and postembryonic development of the blowfly, Chrysomya megacephala (Diptera: Calliphoridae) following egg treatment Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-12-22 Rahul Maddheshiya, K. P. Singh
ABSTRACT Chrysomya megacephala is a vector for many pathogens and causes myiasis in vertebrates. In the present investigation, essential oil (EO) of Lantana camara was analysed by GC-MS to determine its chemical composition. Furthermore, this oil was tested against the eggs of C. megacephala to examine its ovicidal effect. Compositional analysis of EO revealed major components in the EO were α- pinene
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Cycle of reproduction, oocyte atresia, and maturation size of the Manila clam Ruditapes philippinarum on a pebble beach in Mutsu Bay, Northern Japan Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-11-28 Daisuke Sugiura, Naohisa Kikuya
ABSTRACT This study investigated the seasonal cycle of reproduction and oocyte atresia (i.e. cell death and degeneration), and size at maturity of the Manila clam Ruditapes philippinarum (Mollusca: Bivalvia) in Mutsu Bay, Northern Japan. Monthly changes in condition factor and reproductive stage of gonads indicated that females and males spawned during July–September and June–October in 2014, respectively
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Revisiting the regeneration of Stenostomum leucops (Catenulida, Platyhelminthes) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-10-26 Marcos T. Rosa, Elgion L. S. Loreto
ABSTRACT Stenostomum are small flatworms that live in freshwater and normally reproduce by paratomy. They are basal in Platyhelminthes phylogeny. For more than a century, species of this genus, especially S. leucops, have been used in regeneration studies. However, some contradictory results remain, as there are concerns about which body parts regenerate, and their routes of regeneration. Problems
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Occurrence of male morphotypes in the freshwater prawn Macrobrachium acanthurus Wiegmann, 1836 (Decapoda, Palaemonidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-10-06 David P. Rios, João A. F. Pantaleão, Gustavo L. Hirose
ABSTRACT This study tested the hypothesis of the existence of male morphotypes in Macrobrachium acanthurus, a species of recognized economic potential, with an extensive geographic distribution. The collections occurred on eight occasions between July 2016 and March 2018 at seven points along the Jequitinhonha River, state of Bahia, Brazil. The identification of male morphotypes occurred through morphological
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Reproductive aspects of the snapping shrimp Alpheus packardii (Decapoda, Alpheidae) in Mahahual reef lagoon, southern coast of Quintana Roo, Mexican Caribbean Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-07-29 Mario Martínez-Mayén
ABSTRACT Alpheus packardii is widely distributed along the Atlantic coast of the Americas, from Cape Charles Virginia to São Paulo, Brazil and part of the West Indies. The goal of this study is to provide preliminary data on sex ratio, size at sexual maturity, fecundity, volume of the embryos, and brood loss on the basis of material collected in July 1997 at Mahahual, Quintana Roo, Mexico. The 483
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Mating strategies of the endangered insular land crab Johngarthia lagostoma (H. Milne Edwards, 1837) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-08-20 M. C. A. João, N. Kriegler, A. S. Freire, M. A. A. Pinheiro
ABSTRACT Hard-shell-mating is the typical way that semi-terrestrial and terrestrial crabs copulate, when females reproduce with a hard carapace during the intermoult period and the couples have a brief or absent pre- and post-copulatory behaviour. For Gecarcinidae crabs there are few studies on reproductive behaviour, and are especially rare for isolated species, as in the genus Johngarthia. Here,
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Invertebrate oogenesis – a review and synthesis: comparative ovarian morphology, accessory cell function and the origins of yolk precursors Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-08-06
ABSTRACT Oogenesis is a fundamental biological process observed in most animals. Animals employ many different mechanisms to make their eggs and oogenesis cannot be completed without the support of other intraovarian and/or extraovarian cells and tissues. Invertebrates account for 99% of all animal life on earth and their complex life histories are a reflection of the structural heterogeneity of their
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Seasonal variations in the life cycle and morphology of Anisops breddini (Hemiptera: Notonectidae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-08-06 Chongtham Memtombi Chanu, Susmita Gupta, Abhik Gupta
ABSTRACT Studies on temperature-dependent phenology and morphology of insects facilitate examination of the consequences of temperature on their growth, development and population dynamics. The effects of seasonal changes on the life cycle and morphometry of Anisops breddini were studied by rearing eggs to adults under laboratory conditions during the wet and dry seasons. The average incubation period
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Effect of temperature on red snow crab Chionoecetes japonicus (Crustacea, Decapoda, Majoidea) larval survival, development, and growth under laboratory conditions Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-08-05 Takeo Yamamoto, Yuji Ueda, Katsuyuki Hamasaki
ABSTRACT In the Sea of Japan, the mature red snow crab Chionoecetes japonicus is distributed at a depth of 500–2,700 m. However, its planktonic larvae occur at depths shallower than 300 m. To better understand the factors influencing larval dispersal and settlement of the red snow crab in its natural habitat, we tested the effects of temperatures ranging from 1°C to 18°C on the survival, developmental
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Gonadotropin-releasing hormone-like gene in the cephalopod, Sepia pharaonis: characterization, expression analysis, and localization in the brain Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-06-15 Chang-Pu Song, Lian-lian Sun, Li-bing Zheng, Chang-feng Chi
ABSTRACT Gonadotropin-releasing hormone (GnRH), a decapeptide secreted by hypothalamic neurons, is a key signalling molecule of the hypothalamic–pituitary–gonadal axis for the control of reproduction in vertebrates. In this study, a full-length cDNA of GnRH-like gene from the cuttlefish Sepia pharaonis (denoted as SpGnRH, GenBank Accession NO. QPB69198.1) was cloned, which is 432 bp and the open reading
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Laboratory-simulated marine heatwave accelerates early embryonic development in the sea urchin Arbacia punctulata at its cold range edge Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-06-11 Christian Bojorquez, Colette J. Feehan
ABSTRACT Marine heatwaves are discrete periods of anomalously warm sea temperatures that are globally increasing in frequency and intensity. Marine heatwaves that occur in spring and summer may coincide with the developmental timing of sensitive early life-history stages of benthic marine invertebrates. The successful development of these early life stages, along with other physical and biological
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Early development of two species of Spirobranchus Blainville, 1818 (Polychaeta: Serpulidae) from the Southern Mexican Pacific Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-06-10 J. P. Sánchez-Ovando, F. Benítez-Villalobos, J. R. Bastida-Zavala
ABSTRACT Species of the genus Spirobranchus are sessile polychaetes with an important role in marine ecosystems since they are suspension-feeding invertebrates. However, for most species almost nothing is known about their early and larval development, so we describe the early development of two species of Spirobranchus from the Southern Mexican Pacific. The early trochophore larva of S. incrassatus
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Onset of sexual maturity of sexually propagated and wild colonies of the massive coral Favites abdita in northwestern Philippines Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-06-06 Katya G. Bonilla, James R. Guest, Dexter W. dela Cruz, Maria Vanessa Baria-Rodriguez
ABSTRACT Despite decades of research, many aspects of coral reproductive biology, such as colony size and age at the onset of sexual maturity remain poorly studied. In this study, wild colonies of different size classes and colonies of a known age of the massive scleractinian Favites abdita were examined for the presence or absence of mature oocytes to determine size and age at the onset of maturity
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Effect of the medicinal plant Withania somnifera on the development of a medico-veterinary pest Chrysomya megacephala (Diptera: Calliphoridae) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-05-25 Sandeep Kumar Gaur, Krishna Kumar
ABSTRACT Topical administration of root and seed extracts (5, 10, 15 and 20 µg/µL) of Withania somnifera to 0, 1, 2, and 3 days post-moult third instar larvae of Chrysomya megacephala resulted in disruption of moulting and metamorphosis. This leads to several developmental aberrations, such as prolongation of larval-pupal and pupal-adult ecdysis, larval mortality, abnormal pupariation, formation of
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Effects of Bisphenol-A on the morphology and survival of larvae of the sand dollar Dendraster excentricus (Echinodermata, Echinoidea) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-05-04 Emily Darin
ABSTRACT Bisphenol-A (BPA) is an ingredient used in phenol resins, epoxy resins, polyesters and polycarbonate plastics. BPA gets released into the aquatic environment through toxic waste disposal, groundwater, sewage runoff and plastic leaching. When BPA enters aquatic environments, it can affect the development and physiology of marine organisms. This study aimed to understand the effects of relatively
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Development of the soil-inhabiting stages of Ceratitis capitata infected with entomopathogenic nematodes: insights on survival Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-04-29 El-Sayed H. Shaurub, Nehad A. Soliman, Magda M. Sabbour
ABSTRACT The Mediterranean fruit fly Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) is a major pest that affects fruit production worldwide. This insect spends part of its life cycle in the soil, making it a target for entomopathogenic nematodes (EPNs). Laboratory assays were conducted to assess the development of the soil-inhabiting stages (third-instar larvae, prepupae, and pupae), in terms
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Unique reproductive biology of the broadcasting sea cucumber Holothuria floridana: facultative recruitment on adults inside nursery grounds Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-03-26 Arlenie Rogers, Jean-François Hamel, Junior Quetzal, Annie Mercier
ABSTRACT Information on newly settled juveniles and recruitment processes in sea cucumbers is sparse for most commercial species, impeding protection of nursery habitats, which are key to management. Here, the ecology of early life stages of Holothuria floridana was investigated. In laboratory experiments, females released a small number of oocytes, which underwent abbreviated lecithotrophic development
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Gonadal development, reproductive investment and fecundity of Aegla castro Schimitt, 1942 (Crustacea, Anomura) Invertebr. Reprod. Dev. (IF 0.8) Pub Date : 2021-01-11 Bruna Scapin Silva, Ana Paula Franco Punhagui-Umbelino, Glaura Scantamburlo Alves Fernandes, Gustavo Monteiro Teixeira
ABSTRACT Aegla castro, is an endemic anomuran crab from Brazil found in headwater streams of the Atlantic Forest on the Paranapanema River basin. This study aims to evaluate the gonadal maturity of A. castro based on macroscopic and microscopic analyses. Crabs were collected in Mauá da Serra (23º57’ S; 51º06ʹ W), Paraná, Brazil in the winter and spring of 2015, and summer, autumn, and spring of 2016