Springer eBooks, Год журнала: 2020, Номер unknown, С. 301 - 323
Опубликована: Янв. 1, 2020
Язык: Английский
Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2018, Номер 94(3), С. 929 - 956
Опубликована: Ноя. 28, 2018
ABSTRACT For sexual selection to act on a given sex, there must exist variation in the reproductive success of that sex as result differential access mates or fertilisations. The mechanisms and consequences acting male animals are well documented, but research females has only recently received attention. Controversy still exists over whether acts traditional sense, modify existing definition (to include resource competition) invoke alternative (usually social selection) explain connection with reproduction. However, substantial evidence bearing characters exhibiting behaviours analogous those attributed males. Here we summarise literature provide female intrasexual competition for mates, intersexual signalling potential postcopulatory such between eggs sperm cryptic allocation. Our review makes clear males similar ways sometimes differing extents: ceiling elaboration costly traits may be lower than We predict current future will increasing support parsimony utility selection.
Язык: Английский
Процитировано
149
Proceedings of the Royal Society B Biological Sciences, Год журнала: 2018, Номер 285(1883), С. 20180836 - 20180836
Опубликована: Июль 18, 2018
‘Sperm competition’—where ejaculates from two or more males compete for fertilization—and ‘cryptic female choice’—where females bias this contest to suit their reproductive interests—are now part of the everyday lexicon sexual selection. Yet physiological processes that underlie these post-ejaculatory episodes selection remain largely enigmatic. In review, we focus on a range cellular- and molecular-level processes, known be fundamental fertilization across most (if not all) sexually reproducing species, point putative role in facilitating at level cells gametes, called ‘gamete-mediated mate choice’ (GMMC). way, collate accumulated evidence GMMC different mating systems, emphasize evolutionary significance such non-random interactions among gametes. Our overall aim review is build inclusive view by showing choice often acts nuanced ways than has traditionally been assumed. We also bridge conceptual divide between proximal mechanisms reproduction, adaptive explanations patterns sperm–egg are emerging an increasingly diverse array taxa.
Язык: Английский
Процитировано
85
Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2020, Номер 375(1813), С. 20200077 - 20200077
Опубликована: Окт. 18, 2020
The role of non-gametic components the ejaculate (seminal fluid) in fertility and sperm competitiveness is now well established. Surprisingly, however, we know far less about female reproductive fluid (FRF) context sexual selection, insights into male–FRF interactions competition have only recently emerged. Despite this limited knowledge, evidence from taxonomically diverse species has revealed effects FRF on traits that previously been implicated studies competition. Specifically, through differential a range traits, including chemoattraction alterations velocity, shown to exert positive phenotypic males are preferred as mating partners, or those most compatible genetically males. these tantalizing putative sexually selected functions FRF, largely lack mechanistic understanding processes. Taken together, presented here highlights likely ubiquity FRF-regulated biases fertilization success across taxa, thus potentially elevating importance other so studied This article part theme issue ‘Fifty years competition'.
Язык: Английский
Процитировано
62
Reviews in Aquaculture, Год журнала: 2019, Номер 12(2), С. 1165 - 1192
Опубликована: Авг. 13, 2019
Abstract The lifespan of spermatozoa from externally fertilizing freshwater fish ranges a few seconds to several minutes, depending on the species. External factors, such as temperature, background flows and ion composition, play an important role in fertilization success. Specific mechanisms guiding appear be essential maximize sperm–egg encounter under these strenuous conditions. Although some existing data support hypothesis that both ovarian fluid eggs may release chemoattractants significantly affect behaviour outcome, this is still open debate, existence chemotaxis has yet demonstrated; addition, specific supporting guidance gamete selection have not been elucidated. Is natural gametes determined by combination different physicochemical phenomena? Alternatively, species‐specific biased towards their landscape? These questions received more attention new studies revealed potential, distinct reproduction. In review, we discuss empirical hypotheses about highlight synergistic experiments biomathematical modelling explore questions. Finally, challenges understanding behind sperm species, suppose knowledge underlie species elucidate impact traditional aquaculture practice artificial progeny quality sustainability.
Язык: Английский
Процитировано
55
Reviews in Aquaculture, Год журнала: 2021, Номер 13(4), С. 2289 - 2304
Опубликована: Май 7, 2021
Abstract Aquaculture currently accounts for approximately half of all seafood produced and is the fastest growing farmed food sector globally. Marine bivalve aquaculture, farming oysters, mussels clams, represents a highly sustainable component this industry has major potential global expansion via increased efficiency, numbers of, production systems. Artificial spat propagation (i.e. settled juveniles) in hatcheries selective breeding have to offer rapid widespread gains molluscan aquaculture industry. However, bivalves unique life‐histories, genetic genomic characteristics, which present significant challenges achieving such improvement. Selection pressures experienced by larvae wild contribute drive population structure animal fitness. Similarly, domestication selection likely act on hatchery‐produced spat, full implications not been fully explored. In review, we outline key features these taxa practices applied affect phenotypic variability hatchery‐propagated stock. Alongside, compare artificial natural processes investigate possible consequences hatchery stock production. addition, identify areas investigation that need be prioritized continue advancement improvement breeding. The accessibility next‐generation sequencing technology high‐powered computational capabilities facilitate implementation novel tools programmes aquatic species. These emerging techniques represent an exciting opportunity sustainably expanding sector.
Язык: Английский
Процитировано
51
Small, Год журнала: 2023, Номер 20(6)
Опубликована: Сен. 29, 2023
In nature, many organisms respond chemotactically to external chemical stimuli in order extract nutrients or avoid danger. Inspired by this natural chemotaxis, micro/nanomotors with chemotactic properties have been developed and applied study a variety of disease models. This strategy has shown promising results attracted the attention an increasing number researchers. paper mainly reviews construction methods different types micro/nanomotors, mechanism potential applications biomedicine. First, based on classification materials, therapeutic effects cells synthetic materials cellular animal experiments will be elaborated detail. Second, chemotaxis is detail: reaction induced physical process driven chemotaxis. particular, main differences significant advantages between magnetic, electrical optical are described. The biomedical fields recent years then summarized, focusing action cancer cardiovascular disease. Finally, authors looking forward future development fields.
Язык: Английский
Процитировано
17
Behavioral Ecology, Год журнала: 2019, Номер 30(5), С. 1298 - 1305
Опубликована: Май 1, 2019
Abstract In polyandrous mating systems, females maintain the opportunity to bias male fertilization success after in a process known as cryptic female choice. Mechanisms of choice have been described both internal and external fertilizers, may affect processes at different stages before, during, fertilization. substantial control over sperm storage fertilization, whereas is limited. A key factor proposed mediate fluid surrounding eggs, ovarian fluid, it directly performance. Here, we studied role post-mating sexual selection using zebrafish, Danio rerio. Firstly, assessed how affects swimming performance compared with freshwater. We focused on motility, velocity, trajectory, longevity, all traits associated competitive externally fertilizing fish. second step, used North Carolina II design explore female, male, x effects by testing motility 2 males total 11 blocks. Our results indicate that differently from Specifically, longevity were higher than freshwater, linearity beat cross frequency showed opposite pattern. Moreover, these varied according identities, supporting potential for mediated this species.
Язык: Английский
Процитировано
36
Proceedings of the Royal Society B Biological Sciences, Год журнала: 2025, Номер 292(2038)
Опубликована: Янв. 1, 2025
Sperm are traditionally viewed as transcriptionally and translationally silent cells. However, observations that components of the cellular machinery gene expression maintained in ejaculated sperm increasingly cited challenges to this fundamental assumption. Here, we critically evaluate these arguments present three lines evidence from both model non-model systems collectively raise question whether may be capable active expression. First, critical for surrounding possibility differential expression, review recent spermatozoa retain capacity transcribe translate their genomes. Second, highlight how cells can exhibit transcript quantities across different post-ejaculation environments. Third, ask accumulating remarkable phenotypic plasticity post-ejaculatory phenotypes could mechanistically underpinned by changes While indirect do not definitively show transcription genomes, emerging technologies enable us test hypothesis explicitly. Our advocates progress field highlights several important evolutionary, ecological practical implications will probably transcend disciplines clinical applied reproductive sectors.
Язык: Английский
Процитировано
0
bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown
Опубликована: Апрель 16, 2025
Abstract Reproduction is often more thermally sensitive than survival. Thus, understanding the thermal sensitivity of reproductive interactions crucial given global warming. However, it unknown how temperature influences female control over fertilization after mating ( i.e., cryptic choice). We tested temperatures relevant to current conditions and climate change projections influence choice in a marine fish, Symphodus ocellatus . Under typical conditions, females bias dynamics favor dominant males. find that warmer decrease on sperm velocity reduce expected paternity Our results demonstrate can shift balance between mate male-male competition. may sexual selection, leading evolutionary changes traits.
Язык: Английский
Процитировано
0
Proceedings of the Royal Society B Biological Sciences, Год журнала: 2019, Номер 286(1896), С. 20182708 - 20182708
Опубликована: Фев. 6, 2019
Mitochondria produce energy through oxidative phosphorylation (OXPHOS), which depends on the expression of both nuclear and mitochondrial DNA (mtDNA). In metazoans, a striking exception from strictly maternal inheritance mitochondria is doubly uniparental (DUI). This unique system involves maintenance two highly divergent mtDNAs (F- M-type, 8–40% nucleotide divergence) associated with gametes, occasionally coexisting in somatic tissues. To address whether metabolic differences underlie this condition, we characterized OXPHOS activity oocytes, spermatozoa, gills different species respirometry. DUI express gender-linked phenotypes gametes partly The M-phenotype specific to sperm entails (i) low coupled/uncoupled respiration rates, (ii) limitation by system, (iii) null excess capacity final oxidases, supporting strong control over upstream complexes. our knowledge, first example phenotype resulting direct selection mitochondria. remodelling suggests an adaptive value mtDNA variations propose that bearing sex-linked could assure energetic requirements potentially linking male-energetic adaptation, mitotype preservation inheritance, as well resistance heteroplasmy ageing.
Язык: Английский
Процитировано
34