Fish reproduction in a warming world: vulnerable points in hormone regulation from sex determination to spawning

Philosophical Transactions of the Royal Society B Biological Sciences, Год журнала: 2024, Номер 379(1898)

Опубликована: Фев. 5, 2024

Reproduction in fishes is sensitive to temperature. Elevated temperatures and anomalous ‘heat waves’ associated with climate change have the potential impact fish reproductive performance and, some cases, even induce sex reversals. Here we examine how thermal sensitivity hormone pathways regulating reproduction provides a framework for understanding impacts of warmer conditions on reproduction. Such effects will differ depending evolved variation temperature endocrine processes determination/differentiation, gametogenesis spawning, as well developmental timing those varies ecology. For populations unable shift geographical range, persistence under future climates may require changes responsiveness processes. How among species, generate maxima reproduction, rapidly tolerances can via adaptation or transgenerational plasticity shape which are most at risk impaired rising temperatures. This article part theme issue ‘Endocrine responses environmental variation: conceptual approaches recent developments’.

Язык: Английский

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Effects of endocrine disrupting chemicals on gonad development: Mechanistic insights from fish and mammals

Environmental Research, Год журнала: 2021, Номер 204, С. 112040 - 112040

Опубликована: Сен. 9, 2021

Over the past century, evidence has emerged that endocrine disrupting chemicals (EDCs) have an impact on reproductive health. An increased frequency of disorders been observed worldwide in both wildlife and humans is correlated with accidental exposures to EDCs their production. Epidemiological experimental studies highlighted consequences early existence key windows sensitivity during development. Such life can immediate gonadal tract development, as well long-term health males females. Traditionally, were thought exert effects by modifying pathways controlling reproduction. Advances knowledge mechanisms regulating sex determination, differentiation development fish rodents led a better understanding molecular underlying exposure In this manuscript, we review developmental stages sensitive state which model affect these processes, based roadmap gonad specific mammals.

Язык: Английский

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The farming and husbandry ofColossoma macropomum: From Amazonian waters to sustainable production

Reviews in Aquaculture, Год журнала: 2021, Номер 14(2), С. 993 - 1027

Опубликована: Ноя. 25, 2021

Abstract Within the rich diversity of South American freshwater fish, Colossoma macropomum (Characiformes: Serrasalmidae), known as tambaqui, cachama or blackfin pacu, can reach 30 kg, is a traditional product in regional fish markets and has drawn attention farmers since 1930s. Considerable progress achieved different fields aquaculture science contributed to growth tambaqui production. Tambaqui proven suitable for both monoculture polyculture systems, extensive intensive production systems aimed at achieving sustainable, higher productivity with minimal environmental impact. Studies reproductive anatomy physiology species proved fundamental development techniques boost commercial production, contributing protocols hormonally induced spawning artificial propagation 1970s. Newly hatched larvae must be fed live foods until they weaned feeds about 100 mg weight. Despite its importance aquaculture, only few studies have reported components quantitative genetic variance parameters weight age, morphometric traits disease resistance. Genomic tools currently available applied detect variation relevant performance accelerate process improvement. While species’ feeding habit allows use diets containing 75%–85% plant protein, much more work needs done optimize aquafeeds. Refinement methods potential significantly aquaculture. We recommend research on diets, improvement system optimization spur further achieve sustainable culture.

Язык: Английский

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The impacts of heat stress on animal cognition: Implications for adaptation to a changing climate

Wiley Interdisciplinary Reviews Climate Change, Год журнала: 2021, Номер 12(4)

Опубликована: Апрель 27, 2021

Abstract With global surface air temperature rising rapidly, extensive research effort has been dedicated to assessing the consequences of this change for wildlife. While impacts on phenology, distribution, and demography wild animal populations are well documented, impact increasing cognition in these received relatively little attention. Cognition encompasses mental mechanisms that allow individuals process information from surrounding environment, respond accordingly, flexibly adjust behavior. Hence, it is likely be a key factor allowing animals adaptively climate change. Captive studies show heat stress can negatively affect cognitive performance not only short‐term but also long‐term, by altering development at early life stages. Field indicate may survival reproductive success. However, link between stress, cognition, fitness yet formally established. We propose comprehensive framework collection robust empirical datasets wild. then suggest how knowledge could applied population viability models wildlife management actions. believe joint encompassing fields thermal physiology, behavioral ecology, comparative conservation science, essential provide timely mitigation measures against potential This article categorized under: Climate, Ecology, Conservation > Observed Ecological Changes

Язык: Английский

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Climate Change and Reproductive Biocomplexity in Fishes: Innovative Management Approaches towards Sustainability of Fisheries and Aquaculture

Water, Год журнала: 2023, Номер 15(4), С. 725 - 725

Опубликована: Фев. 12, 2023

The ongoing rapid climate change, combined with the disturbance of fish breeding grounds, may impact reproduction by endangering successful and survival, thus affect viable sustainability in aquaculture systems as well sea. In this study we focus on biocomplexity response to change. Further, propose adaptive strategies, including technological advancements, using a noninvasive non-lethal approach, outline an assisted nutrigenomics approach mitigating reproductive risks posed This was done effort monitor ensure that, livelihood, it provide useful source nutrition for our society.

Язык: Английский

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Transcriptional responses to changing environments: insights from salmonids

Reviews in Fish Biology and Fisheries, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Язык: Английский

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Development and organisation of gonadal steroidogenesis in bony fishes - A review

Aquaculture and Fisheries, Год журнала: 2020, Номер 6(3), С. 223 - 246

Опубликована: Ноя. 7, 2020

Gonadal steroidogenesis is pivotal to synchronize various reproductive stages including sexual development, growth and maturation. In all vertebrates teleost, triggered by the mobilization of cholesterol steroidogenic acute regulatory protein from outer inner mitochondrial membrane. Thereafter, entire process occurs in endoplasmic reticulum or mitochondria wherein enzyme genes play a crucial role. The onset during development teleost essentially regulated differential expression several transcription as well steroidogenesis-related factors. More specifically, role dmrt, sox9, sox3, other sox forms, ad4bp/sf-1, wt-1, foxl2, ftz-f1, gata4, gsdf, Activator protein-1, fgfs factors enzymes such cytochrome P450aromatase (cyp19a1), hydroxysteroid 3β-dehydrogenase (hsd3b), 17β-dehydrogenase (hsd17b) have been characterised. Recently, pax2, THO complex (thoc), pentraxin (ptx) few signalling molecules like wnt4/5 regulating teleostean has reported. females, cyp19a1 appears be critical it converts androgens estrogens ovarian differentiation which suggests that estradiol-17β indispensable for event. Unlike males do not depend on testosterone testicular determination, yet major along with 11-ketotestosterone when compared early differentiation. males, sex determining testis-related seems most essential. Considering these, regulation virtually at later stages. view this, motifs pertaining transcriptional analysed far below than reports mammals. this context, influence HHG axis plays teleost. Further, multiple gonadotropin-releasing hormones duality gonadotropins gonadal function. As pathway, synthesis steroids predominantly uses Δ4, however, Δ5 pathway was also evident. next aspect shift usually maturing follicles final oocyte maturation, mechanism clear males. review highlights interactions gene terms important are involved pathways environmental dietary comparing both sexes present holistic organisation gametogenesis

Язык: Английский

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Windows of opportunity: Ocean warming shapes temperature‐sensitive epigenetic reprogramming and gene expression across gametogenesis and embryogenesis in marine stickleback

Global Change Biology, Год журнала: 2021, Номер 28(1), С. 54 - 71

Опубликована: Окт. 20, 2021

Rapid climate change is placing many marine species at risk of local extinction. Recent studies show that epigenetic mechanisms (e.g. DNA methylation, histone modifications) can facilitate both within and transgenerational plasticity to cope with changing environments. However, reprogramming (erasure re-establishment marks) during gamete early embryo development may hinder inheritance. Most our knowledge about stems from mammals model organisms, whereas the prevalence extent among non-model wild populations rarely investigated. Moreover, whether dynamics are sensitive environmental conditions not well known, representing a key gap in pursuit identify underlying links between parental exposure patterns environmentally adapted offspring phenotypes. Here, we investigated (DNA methylation/hydroxymethylation) gene expression across gametogenesis embryogenesis stickleback (Gasterosteus aculeatus) under three ocean warming scenarios (ambient, +1.5 +4°C). We found acclimation led dynamic temperature-sensitive throughout development. Both global methylation/hydroxymethylation genes involved modifications were strongly differentially affected by increased scenarios. Comparing transcriptomic profiles gonads, mature gametes embryonic stages showed sex-specific accumulation temperature sensitivity several actors. methyltransferase induction was primarily maternally inherited (suggesting maternal control remethylation), histone-modifying enzymes shaped parents. Importantly, massive, temperature-specific changes landscape occurred blastula, critical stage for successful development, which could, thus, translate substantial consequences phenotype resilience In summary, study identified regulation, reflecting potential 'windows opportunity' adaptive responses future change.

Язык: Английский

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Effects of global warming on fishes and fisheries

Journal of Fish Biology, Год журнала: 2021, Номер 98(6), С. 1489 - 1492

Опубликована: Июнь 1, 2021

The reality of global warming is now undeniable: many aquatic ecosystems are experiencing progressive increases in seasonal temperatures coupled with wider thermal variation, and an increased incidence extreme heatwaves (Collins et al., 2019; Frölicher 2018; IPCC, 2014). vast majority fishes ectotherms so these climactic changes likely to have strong effects on their physiology, implications at the individual, population, species level, thus fisheries they sustain (McKenzie 2016; Pörtner & Farrell, 2008; Peck, 2010; Seebacher Franklin, 2012). Three major phenomena been documented as broadscale responses by ongoing habitats: (a) latitudinal shifts distributions, poleward movements temperate sub-tropical (Hickling 2006; Parmesan Yohe, 2003; Perry 2005; Poloczanska 2013); (b) phenology life-cycle events, for example timing migrations spawning, or length reproductive seasons (Crozier Hutchings, 2014; Myers 2017; 2013; Rogers Dougherty, 2019), (c) a reduction average body size, linked declines final adult size proportion younger smaller individuals populations (Audzijonyte 2020; Daufresne 2009; Gardner 2011). mechanisms underlying far from completely understood but assumed be driven, least part, physiological functions individual animals, which reflect either phenotypic plasticity evolutionary processes (Goikoetxea 2021; Huey 2012; 2015; Stillman, Wang Overgaard, 2007). This Special Issue (SI) follows previous one published over decade ago Journal Fish Biology, entitled Fishes Climate Change (Vol. 70 November 2010) provides update knowledge after warmest since detailed temperature records began. As reflected title this SI, Effects Global Warming Fisheries, we aimed bring together contributions that ranged physiology biology. Despite, however, casting our net wide among fish biology colleagues, enthusiasm further reviews ecology was low. On other hand, physiologist colleagues were keen contribute, perhaps because although significance understanding intuitive, unknowns remain active area research community. Exactly how translate into ecologically relevant impacts remains matter conjecture. One most influential papers SI Peck (2010), discussed unifying theory, Oxygen- Capacity-Limited Thermal Tolerance (OCLTT) hypothesis (Pörtner, 2002, 2010), explain ectotherm could determine performance fitness function environmental conditions, especially temperature. (2010) highly-cited all Biology OCLTT theory has stimulated wave physiologists. outcome controversy literature (Clark Jutfelt Lefevre, 2017) decided not continue debate SI. Instead, focus various different aspects affects respond this, towards broader overall understanding. comprises seven five articles, both normal run off issues also “virtual issue” some its result production error volumes between 2020 2021. general premise, runs through review systems will scale up influence population warming. consequences dynamics would patterns distribution abundance communities. That is, Darwinian acts level individuals, reliable information essential biologists aim develop mechanistically-based models, project fate communities warmer world (Seebacher McKenzie 2016). begins Little al. (2021) principal transduce signals those fishes. grounding within might drive fisheries. energy metabolism efficiency converting oxygen ATP, core mechanism affect performance. They link across levels organization mitochondrial function, cardiovascular performance, growth efficiency, locomotor muscle conclude considering what known about neuroendocrine tissues, including muscle. Alix (2020) provide extensive higher-than-optimal teleost development understand dynamics, fisheries, aquaculture. authors excessive warmth puberty brain-pituitary-gonad axis. consider biological factors can modulate such impacts, negative gamete quality, spermiation/ovulation, spawning. concludes highlighting gaps areas where emerging technologies may help climate change physiology. Temperature sex determination Therefore, Geffroy Wedekind ways bias ratios wild populations, potentially profound dynamics. consider, particular, act stress axis epigenetic mechanisms, temperature-related differential mortality sexes. A laboratory studies indicate that, if ratios, mostly causes male bias, confirming trend. glimmer hope transgenerational mitigate ratios. Alfonso appraise fishes, based studies, insight expected populations. chronic increase constitutes load alter ability cope additional stressors, while engender direct responses, potential fitness. Feidantsis propose studying farmed offshore cages, valuable natural Taking gilthead seabream Sparus aurata L. 1758 Mediterranean Sea case study, regimes diversity biochemical molecular markers stress, plus behaviours responsiveness appetite. evidence indicates already brought close tolerance limits experienced cage sites, future having important results contribute more accurate definition Morash freshwater lens spatiotemporal variation challenges face. behaviour notably salmonids, affected oscillating temperatures, extent rivers metabolism. quantifying scope acclimatize adapt. intraspecific key determinant vulnerability considers empirical three elements tolerance. Firstly, varies life stages, possibly due universal principles. Secondly, tolerance, required reveal whether there patterns. Thirdly, local adaptation heritability warming, base convincing limited few model emblematic species. ecological forms need research. then dominated experimental Christensen investigated European perch Perca fluviatilis 1758. larger animals perform less well warm sizes distribution. Morissette report Atlantic salmon Salmo salar juveniles tolerate near optimum without growth, swimming Musa single combined ocean hypoxia embryonic survival oviparous elasmobranch, lesser spotted catshark Scyliorhinus canicula Results raises rate leads hatch, generally survival. Vargas-Chacoff inputs coastal Antarctica, challenge osmoregulatory homeostasis sedentary intertidal notothenioid fish, Antarctic spiny plunderfish Harpagifer antarcticus Nybelin 1947. freshening osmotic imbalances H. antarcticus, reduced capacity organs. Lloret deep-water ling (genus Molva) rebuild depleted fishing pressure, difficult southern species' ranges, We fields than find articles interesting. them informative when developing hypotheses broadly specifically.

Язык: Английский

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Potential Impact of Climate Change on Fish Reproductive Phenology: A Case Study in Gonochoric and Hermaphrodite Commercially Important Species from the Southern Gulf of Mexico

Fishes, Год журнала: 2022, Номер 7(4), С. 156 - 156

Опубликована: Июнь 29, 2022

In tropical regions, temperature is the fundamental environmental factor controlling reproduction-related physiological activities of fish. Tropical fish are particularly sensitive to climate change since they develop in a relatively stable thermal environment. A review was done assess potential effect rise on reproduction and population structure commercially important hermaphrodite grouper wrasse species, gonochoric snapper species southern Gulf Mexico. Temperature increase can disturb aromatase synthesis and/or activity, which affect reproductive cycle sexual differentiation all studied inversion process sequential hermaphrodites. Moreover, mistiming or discontinuity spawning seasonality could occur, with an alteration sex ratio favor males consequent reduction populations’ fecundity. Furthermore, if level fishing exploitation enhances species’ sensitivity changes, then stock red Epinephelus morio would be more affected by increases than other because it only Campeche Bank currently assessed as overexploited.

Язык: Английский

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