Metabolism, population growth, and the fast‐slow life history continuum of marine fishes

Fish and Fisheries, Journal Year: 2024, Volume and Issue: 25(2), P. 349 - 361

Published: Jan. 11, 2024

Abstract The maximum intrinsic rate of population increase ( r max ) represents a population's capacity to replace itself and is central fisheries management conservation. Species with lower typically have slower life histories compared species faster higher . Here, we posit that metabolic related the fast–slow history continuum connection may be stronger for aerobic scope resting rate. Specifically, ask whether variation in or any its component life‐history traits – age‐at‐maturity, age, annual reproductive output explain rates across 84 shark teleost species, while accounting effects measurement temperature, body mass, ecological lifestyle, evolutionary history. Overall, find strong between fast‐slow continuum, such growth (higher generally broader scopes. more important explaining rate, which best explained by age‐at‐maturity (out examined). In conclusion, teleosts sharks share common physiology/life at end end, yet considerable overlap. Our work improves our understanding diversity fish ultimately improve sensitivity overfishing.

Language: Английский

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Growth, productivity and relative extinction risk of a data-sparse devil ray

Scientific Reports, Journal Year: 2016, Volume and Issue: 6(1)

Published: Sept. 23, 2016

Devil rays (Mobula spp.) face intensifying fishing pressure to meet the ongoing international demand for gill plates. The paucity of information on growth, mortality, and effort devil make quantifying population growth rates extinction risk challenging. Furthermore, unlike manta (Manta spp.), have not been listed CITES. Here, we use a published size-at-age dataset Spinetail Ray japanica), estimate somatic rates, age at maturity, maximum age, natural mortality. We then plausible distribution intrinsic rate (rmax) compare it 95 other chondrichthyans. find evidence that larger ray species low rate, annual reproductive output, suggesting they productivity. Fishing small-scale artisanal Mexican fishery were comparable our rmax, therefore probably unsustainable. rmax is very similar rays, indicating can potentially be driven local levels mortality degree protection both groups warranted.

Language: Английский

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On the Use of Maps and Models in Conservation and Resource Management (Warning: Results May Vary)

Frontiers in Marine Science, Journal Year: 2017, Volume and Issue: 4

Published: Sept. 11, 2017

Conservation planning and management typically require accurate spatially explicit data at scales that are relevant for conservation objectives. In marine conservation, these often combined with spatial analytical techniques to produce habitat maps. While mapping is increasingly used inform efforts, this field still relatively young its methods rapidly evolving. Because efforts do not always specify standards or guidelines the production of maps, results can vary dramatically. As representations real environmental characteristics, maps highly sensitive how they produced. review paper, I present four concepts known cause variation in representation prediction habitats: methodology used, quality scale data, choice variables regards fitness use. then discuss potential antinomy associated use conservation: while have become an invaluable tool assist decision-making, same area built using different may provide dissimilar representations, thus providing information possibly leading decisions. Exploring theories proved effective terrestrial sciences, be integrated practices, could help improve support result more reliable products Having a strong, consistent, transparent, repeatable, science-based protocol collection essential effectively supporting decision-makers developing plans. The development user-friendly tools application such crucial widespread improvement practices. interactive collaborative Geographic Information Systems encourage community, from collectors mapmakers decision-makers, move toward digital resilience develop protocol. Until protocols developed, should interpreted care, metadata their explicitly stated.

Language: Английский

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Sharkipedia: a curated open access database of shark and ray life history traits and abundance time-series

Scientific Data, Journal Year: 2022, Volume and Issue: 9(1)

Published: Sept. 10, 2022

A curated database of shark and ray biological data is increasingly necessary both to support fisheries management conservation efforts, test the generality hypotheses vertebrate macroecology macroevolution. Sharks rays are one most charismatic, evolutionary distinct, threatened lineages vertebrates, comprising around 1,250 species. To accelerate science, we developed Sharkipedia as a open-source research initiative make all published traits population trends accessible everyone. hosts information on 58 life history from 274 sources, for 170 species, 39 families, 12 orders related length (n = 9 traits), age (8), growth (12), reproduction (19), demography (5), allometric relationships well 871 time-series 202 relies backbone taxonomy IUCN Red List bibliography Shark-References. has profound potential rapidly growing demands management, international trade regulation anchoring

Language: Английский

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Characteristics of Fiji’s small-scale ray fishery and its relevance to food security

Marine Policy, Journal Year: 2024, Volume and Issue: 163, P. 106082 - 106082

Published: March 7, 2024

Sharks and rays are a relevant component of Fiji's small-scale fishery. However, existing data skewed towards sharks, leaving fishery activities for less understood. To document species-specific catch numbers, sex, age-classes captured rays, the Suva fish market on main island Viti Levu was surveyed one year from January 2022 to 2023. Among 192 individual recorded in Suva, five species were visually identified: maskray (Neotrygon sp.), spotted eagle ray (Aetobatus ocellatus), pink whipray (Pateobatis fai), Oceania fantail (Taeniura lessoni), porcupine (Urogymnus asperrimus). DNA barcoding did not provide unequivocal confirmation. The most traded species. further characterize capture relevance food security, 84 fishers vendors interviewed coastal communities at local markets. interviews revealed that 70.4% interviewees caught which 60% reported spear them. Rays considered moderately important resource but particularly security as substitute bony fish. Given life histories global declines many species, explicitly considering management arrangements fisheries enhancing compliance enforcement regulations, is vital safeguard populations. Overall, these findings baseline information monitoring

Language: Английский

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Biological sensitivities to high‐resolution climate change projections in the California current marine ecosystem

Global Change Biology, Journal Year: 2022, Volume and Issue: 28(19), P. 5726 - 5740

Published: July 28, 2022

The California Current Marine Ecosystem is a highly productive system that exhibits strong natural variability and vulnerability to anthropogenic climate trends. Relating projections of ocean change biological sensitivities requires detailed synthesis experimental results. Here, we combine measured with high-resolution key variables (temperature, oxygen, pCO2 ) identify the direction, magnitude, spatial distribution organism-scale vulnerabilities multiple axes projected change. Among 12 selected species cultural economic importance, find all are sensitive changes in conditions through responses affect individual performance or population processes. Response indices were largest northern region inner shelf. While traits generally increased changes, fitness decreased, indicating concurrent stresses can lead loss. For two species, combining temperature oxygen Metabolic Index shows how aerobic habitat availability could be compressed under future conditions. Our results suggest substantial specific ecological susceptibility next 80 years, including potential regional loss canopy-forming kelp, nearshore food webs caused by declining rates survival among red urchins, Dungeness crab, razor clams, for anchovy pink shrimp. We also highlight fillable gaps knowledge, physiological stressors, variation across life stages, multistressor combinations. These findings strengthen case filling information experiments focused on fitness-related those used parameterize integrative models, CCME susceptible ecosystem structure function within this century.

Language: Английский

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Demographic feedbacks during evolutionary rescue can slow or speed adaptive evolution

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2016)

Published: Feb. 14, 2024

Populations declining toward extinction can persist via genetic adaptation in a process called evolutionary rescue. Predicting rescue has applications ranging from conservation biology to medicine, but requires understanding and integrating the multiple effects of stressful environmental change on population processes. Here we derive simple expression for how generation time, key determinant rate evolution, varies with size during Change time is quantitatively predicted by comparing intraspecific competition source maladaptation each affect rates births deaths population. Depending difference between two parameters quantifying these effects, model predicts that populations may experience substantial changes their both positive negative directions, or adapt consistently despite severe stress. These predictions were then tested comparison results individual-based simulations rescue, which validated tolerable varied considerably as described analytical results. We discuss inform efforts understand wildlife disease climate change, evolution managed treatment resistance pathogens.

Language: Английский

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Warming waters lead to increased habitat suitability for juvenile bull sharks (Carcharhinus leucas)

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: March 14, 2024

Abstract Coastal ecosystems are highly vulnerable to the impacts of climate change and other stressors, including urbanization overfishing. Consequently, distributions coastal fish have begun change, particularly in response increasing temperatures linked change. However, few studies evaluated how natural anthropogenic disturbances can alter species conjunction with geophysical habitat alterations, such as changes land use cover (LU/LC). Here, we examine spatiotemporal distribution juvenile bull sharks ( Carcharhinus leucas ) using a multi-decadal fishery-independent survey Alabama. Using boosted regression tree (BRT) modeling framework, assess covariance environmental conditions (sea surface temperature, depth, salinity, dissolved oxygen, riverine discharge, Chl-a) well historic LU/LC sharks. Species models resultant from BRTs for early (2003–2005) recent (2018–2020) monitoring periods indicated mean increase suitability (i.e., probability capture) 0.028 0.082, concomitant substantial increases annual temperature (0.058°C/yr), Chl-a (2.32 mg/m 3 ), (increased LU/LC) since 2000. These results align observed five-fold relative abundance across study period demonstrate changing on their abundance. As persists, communities will continue altering structure ecological success nearshore fisheries.

Language: Английский

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Damming creates winners and losers: Life history traits fail to predict vulnerability in freshwater fishes

Global Ecology and Conservation, Journal Year: 2024, Volume and Issue: 52, P. e02957 - e02957

Published: April 21, 2024

Increasing global use of dams is a major threat to freshwater ecosystems as they dramatically disrupt river flow regimes resulting in cascade negative impacts on fish and other aquatic biota. Quantitative reviews damming have focused community level responses, but there no synthetic understanding species-specific effects. Such work needed because fishes are among the most diverse clades animal kingdom, possessing wide variety life history traits that may facilitate resiliency face increasing worldwide. To help fill this knowledge gap, we conducted meta-analysis evaluate whether key mediate population response damming. We developed linear mixed models if migration status, body size, reproductive strategy, trophic level, taxonomy influence Largely, observed both positive responses suggesting universal type disturbance. Further, was single or combination trait(s) significantly explained variation our models. There weak evidence maximum length parental care through nest guarding influenced Taxonomic analysis revealed order, Eupercaria, exhibited some Overall, findings suggest create effects populations without clear signal from evaluated. Resilience depend complex interactions not measured site-specific factors result increases declines. This suggests case-by-case system assessments likely still understand predict consequences dams. information critical, given increased prevalence basins harbor large fraction biodiversity.

Language: Английский

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Fundamental constraints on vertebrate life history are shaped by aquatic–terrestrial transitions and reproductive mode

Nature Ecology & Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Language: Английский

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