Maternal investment evolves with larger body size and higher diversification rate in sharks and rays

Current Biology, Journal Year: 2024, Volume and Issue: 34(12), P. 2773 - 2781.e3

Published: June 1, 2024

Language: Английский

---

Current methods and best practice recommendations for skate and ray (Batoidea) research: capture, handling, anaesthesia, euthanasia, and tag attachment

Reviews in Fish Biology and Fisheries, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Language: Английский

---

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

---

Initial effects of the expansion and enforcement of a subtropical marine reserve on threatened shark species

Environmental Biology of Fishes, Journal Year: 2024, Volume and Issue: 107(2), P. 237 - 248

Published: Jan. 10, 2024

Language: Английский

---

Ecological erosion and expanding extinction risk of sharks and rays

Science, Journal Year: 2024, Volume and Issue: 386(6726)

Published: Dec. 5, 2024

The true state of ocean biodiversity is difficult to assess, and there are few global indicators track the primary threat overfishing. We calculated a 50-year Red List Index extinction risk ecological function for 1199 sharks rays found that since 1970, overfishing has halved their populations worsened by 19%. Overfishing largest species in nearshore pelagic habitats risks loss ecomorphotypes 5 22% erosion functional diversity. Extinction higher countries with large human coastal but lower nations stronger governance, larger economies, greater beneficial fisheries subsidies. Restricting fishing (including incidental catch) trade sustainable levels combined prohibiting retention highly threatened can avert further depletion, widespread population connectivity, top-down predator control.

Language: Английский

---

A Global Synthesis of Population Demographic Models in Sharks and Rays

Fish and Fisheries, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

ABSTRACT Demographic models are vital tools in fisheries management, particularly for data‐limited species such as sharks and rays. However, a significant gap exists the statistical quantification of productivity metrics related to elasmobranchs. This study addresses this by conducting meta‐analysis population rays, framed within scientometric context. We reviewed 91 publications, which revealed modest positive trend research over time. Our findings suggest that geographical distribution life history traits may be more important than ecological variables determining elasmobranch vulnerability fishing. Furthermore, Rays oviparous elasmobranchs generally exhibit higher finite rates growth ( λ ) compared viviparous elasmobranchs, respectively. when correcting phylogenetic relationships, these differences become statistically non‐significant, highlighting importance accounting non‐independence interpreting interspecific trends demographic traits. A negative correlation between mean lambda values IUCN status was found, indicating at greater risk extinction have lower values. Odontaspididae Mobulidae identified most vulnerable shark ray families fishing pressure, results inhabiting latitudes warmer temperatures pressure. Methodological approaches evolved, with notable increase use matrix Most studied demographically classified least concern, highlights need intensified efforts focused on threatened species, well addressing geographic biases prevalent developing countries.

Language: Английский

---

Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing

Fish and Fisheries, Journal Year: 2025, Volume and Issue: unknown

Published: March 3, 2025

ABSTRACT Sharks are among the most threatened groups of exploited fishes, comprising common bycatch across many fisheries. Management efforts intended to safeguard species have increasingly focused on retention bans reduce mortality. However, population effects such measures remain unevaluated species. We combined available data from 160 studies providing estimates at‐vessel or post‐release mortality for 147 taxa caught by different fishing gears create random‐forest regression models and predict rates 341 shark incidentally captured longlines gillnets. Smaller‐bodied inhabiting shallow waters were more likely suffer compared their deep‐water counterparts, which was occur. then used results simulate effect in reducing sustainable levels. Our metric consists ratio between proportion each species' discarded ( P MAX ) under a ban divided F predicted achieve maximum yield MSY ). calculations show that yielded an average ~ three‐fold higher , with 18% having /F < 2, 72.3% 2 5, 9.7% > 5. For species, median = 2.28 non‐threatened ones had 2.77. study shows could mortality, but must be additional stop overfishing, especially low‐productivity

Language: Английский

---

Guitarfishes are plucked: Undermanaged in global fisheries despite declining populations and high volume of unreported international trade

Marine Policy, Journal Year: 2023, Volume and Issue: 155, P. 105753 - 105753

Published: July 7, 2023

Language: Английский

---

DEBBIES Dataset to study Life Histories across Ectotherms

Scientific Data, Journal Year: 2024, Volume and Issue: 11(1)

Published: Feb. 1, 2024

Abstract Demographic models are used to explore how life history traits structure strategies across species. This study presents the DEBBIES dataset that contains estimates of eight (length at birth, puberty and maximum length, reproduction rate, fraction energy allocated respiration versus reproduction, von Bertalanffy growth mortality rates) for 185 ectotherm The can be parameterise dynamic budget integral projection (DEB-IPMs) calculate key demographic quantities like population rate resilience, but also link conservation status or biogeographical characteristics. Our technical validation shows a satisfactory agreement between observed predicted longevity, generation time, age maturity all Compared existing datasets, accommodates (i) easy cross-taxonomical comparisons, (ii) many data-deficient species, (iii) forecasts novel conditions because DEB-IPMs include mechanistic description trade-off reproduction. has potential biologists unlock general predictions on responses from only few traits.

Language: Английский

---

Changing feeding levels reveal plasticity in elasmobranch life history strategies

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 16, 2024

Abstract Life history strategies are shaped by phylogeny, environmental conditions and individual energy budgets, have implications for population performance. Here, we used an approach that merges demography with budget theory to structure life traits of 151 elasmobranch species into two contrasting feeding levels. We assessed how phylogeny habitat impacted strategies, tested if these predict performance conservation status. Elasmobranch structured along the fast-slow continuum reproductive strategy axes. However, species’ positions in this space were not fixed, but instead moved anticlockwise ‘whirlpool’ manner axes response increase level. also found growth rate does necessarily inform on a demographic resilience. Finally, only at higher level IUCN status, slowest highest risk extinction. Our analyses reveal plasticity warn against extrapolating framework from one environment another when predicting (climate) change, perturbations, and, particularly case elasmobranchs, (over)exploitation.

Language: Английский

---