Relaxin-like gonad-stimulating peptide promotes gamete maturation and spawning in the sea cucumber Apostichopus japonicus

Animal Reproduction Science, Journal Year: 2025, Volume and Issue: 275, P. 107820 - 107820

Published: March 6, 2025

Language: Английский

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An insight into nitrite-induced reproductive toxicity and the alleviation of injury by selenomethionine through activation of the Keap1/Nrf2 pathway in Procambarus clarkii

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: 306, P. 141616 - 141616

Published: March 3, 2025

Language: Английский

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Sex roles and the evolution of parental care specialization

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2019, Volume and Issue: 286(1909), P. 20191312 - 20191312

Published: Aug. 28, 2019

Males and females are defined by the relative size of their gametes (anisogamy), but secondary sexual dimorphism in fertilization, parental investment mating competition is widespread often remarkably stable over evolutionary timescales. Recent theory has clarified causal connections between anisogamy most prevalent differences sexes, deviations from these patterns remain poorly understood. Here, we study how sex coevolve with care specialization. Parental consists two or more distinct activities (e.g. provisioning defence) parents may efficiently specializing a subset activities. Our model predicts that efficient specialization broadens conditions under which biparental can evolve lineages historically had uniparental care. Major transitions roles female-biased strong male to male-biased female competition) arise following ecologically induced changes costs benefits different types, ratio at maturation. provides clear mechanism for sex-role transitions, also such should be rare. It consequently contributes towards explaining phylogenetic inertia parenting systems.

Language: Английский

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Endless forms of sexual selection

PeerJ, Journal Year: 2019, Volume and Issue: 7, P. e7988 - e7988

Published: Nov. 5, 2019

In recent years, the field of sexual selection has exploded, with advances in theoretical and empirical research complementing each other exciting ways. This perspective piece is product a “stock-taking” workshop on conflict. Our aim to identify deliberate outstanding questions stimulate discussion rather than provide comprehensive overview entire field. These are organized into four thematic sections we deem essential First focus evolution mate choice mating systems. Variation quality can generate both competition opposite sex, implications for Limitations may dictate importance direct vs. indirect benefits decisions consequently, systems, especially regard polyandry. Second, how sender receiver mechanisms shape signal design. Mediation honest content likely depends integration temporally variable social physiological costs that challenging measure. We view neuroethology sensory cognitive biases as main key form ‘aesthetic sense’ proposed by Darwin. Since bias sufficient initiate drive ornament or armament exaggeration, without genetically correlated even coevolving receiver, this be appropriate ‘null model’ selection. Thirdly, genetic architecture sexually selected traits. Despite modern molecular techniques, number identity genes underlying performance, display secondary traits remains largely unknown. In-depth investigations basis dimorphism context long-term studies will reveal constraints trajectories trait evolution. Finally, conflict drivers speciation. Population divergence speciation often influenced an interplay between natural The extent which promotes counteracts population vary depending well covariance local adaptation. Additionally, post-copulatory processes, such against heterospecific sperm, influence propose efforts resolve these themes catalyze conceptual progress selection, offer potential avenues advance progress.

Language: Английский

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Sexual selection after gamete release in broadcast spawning invertebrates

Philosophical Transactions of the Royal Society B Biological Sciences, Journal Year: 2020, Volume and Issue: 375(1813), P. 20200069 - 20200069

Published: Oct. 18, 2020

Broadcast spawning invertebrates offer highly tractable models for evaluating sperm competition, gamete-level mate choice and sexual conflict. By displaying the ancestral mating strategy of external fertilization, where selection is constrained to act after gamete release, broadcast spawners also potential evolutionary insights into cascade events that led reproduction in more ‘derived’ groups (including humans). Moreover, dynamic reproductive conditions faced by these animals mean strength direction on both males females can vary considerably. These attributes make invertebrate systems uniquely suited testing, extending, sometimes challenging classic contemporary ideas many which were first captured Parker's seminal papers topic. Here, we provide a synthesis outlining progress fields, highlight burgeoning mechanistic understanding broadly across animal kingdom. This article part theme issue ‘Fifty years competition’.

Language: Английский

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Polystyrene microplastics photo-aged under simulated sunlight influences gonadal development in the Pacific oyster

Marine Environmental Research, Journal Year: 2024, Volume and Issue: 195, P. 106367 - 106367

Published: Jan. 20, 2024

Language: Английский

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Investigating adult reproduction as a potential barrier to recovery of wild Manila clam (Venerupis philippinarum) populations impacted by the Nathan E. Stewart oil spill, Central Coast, B.C.

Marine Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 107181 - 107181

Published: April 1, 2025

Language: Английский

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Aquatic Life History Trajectories Are Shaped by Selection, Not Oxygen Limitation

Trends in Ecology & Evolution, Journal Year: 2019, Volume and Issue: 34(3), P. 182 - 184

Published: Jan. 10, 2019

Language: Английский

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Reproductive investment and fecundity of Pacific crown-of-thorns starfish (Acanthaster cf. solaris) on the Great Barrier Reef

Marine Biology, Journal Year: 2021, Volume and Issue: 168(6)

Published: May 17, 2021

Language: Английский

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Effects of Dietary Lipid Levels on Growth and Gonad Development of Onychostoma macrolepis Broodfish

Fishes, Journal Year: 2022, Volume and Issue: 7(5), P. 291 - 291

Published: Oct. 18, 2022

To assess the lipid requirements of O. macrolepis broodstock, five iso-nitrogenous diets (39 g kg−1) with levels, 50 (5 L), 70 (7 90 (9 L),110 (11 and 130 (13 L; kg−1), were made. A total 105 three-year-old individuals (50.11 ± 2.86 per fish) divided into groups (triplicate group) fed diets, respectively, for eight weeks. Then, fish sampled, items determined. The results showed that growth rate feed efficiency ratio not significantly affected by (p > 0.05). clear dose–response effect dietary was observed on somatic indexes gonad brookstock, highest values corresponding to 9 11 kg−1 lipids, in contrast, reduced as moved away from this level. other indexes, such viscerosomatic index, perivisceral fat etc., content crude protein carcass, hepatopancreas, levels fatty acids 16:0 22:6n-3 decreased 18:2n-6 increased increasing level, being altered < histological features no significant difference among relative expression sex steroid-synthesizing proteins (fshr, 3β-hsd, 17β-hsd, aro., star.) most highly expressed L suggested a proper level 90–110 could maintain development broodstock without affecting performance.

Language: Английский

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