Author comment: A Global Ecological Signal of Extinction Risk in Marine Ray-Finned Fishes (Class Actinopterygii) — R0/PR1 DOI Creative Commons
Trevor M. Bak

Published: June 2, 2023

Many marine fish species are experiencing population declines, but their extinction risk profiles largely understudied in comparison to terrestrial vertebrate counterparts. Selective of may result rapid alteration the structure and function ocean ecosystems. In this study, we compiled an ecological trait dataset for 8,185 ray-finned fishes (class Actinopterygii) from FishBase used phylogenetic generalized linear models examine which traits associated with increased risk, based on International Union Conservation Nature Red List. We also assessed threat types be driving these toward greater whether threatened face a average number than non-threatened species. found that larger body size and/or life histories involving movement between marine, brackish, freshwater environments elevated risk. Commercial harvesting threatens greatest species, followed by pollution, development, then climate change. average, significantly These results can resource managers help address heightened patterns found.

Language: Английский

A global ecological signal of extinction risk in marine ray-finned fishes (class Actinopterygii) DOI Creative Commons
Trevor M. Bak, Richard J. Camp, Noel A. Heim

et al.

Cambridge Prisms Extinction, Journal Year: 2023, Volume and Issue: 1

Published: Jan. 1, 2023

Abstract Many marine fish species are experiencing population declines, but their extinction risk profiles largely understudied in comparison to terrestrial vertebrate counterparts. Selective of may result rapid alteration the structure and function ocean ecosystems. In this study, we compiled an ecological trait dataset for 8,185 ray-finned fishes (class Actinopterygii) from FishBase used phylogenetic generalized linear models examine which traits associated with increased risk, based on International Union Conservation Nature Red List. We also assessed threat types be driving these toward greater whether threatened face a average number than non-threatened species. found that larger body size and/or life histories involving movement between marine, brackish, freshwater environments elevated risk. Commercial harvesting threatens greatest species, followed by pollution, development, then climate change. average, significantly These results can resource managers help address heightened patterns found.

Language: Английский

Citations

11
A functional assessment of fish as bioturbators and their vulnerability to local extinction DOI Creative Commons

Mara Fischer,

Ceri Lewis, Julie P. Hawkins

et al.

Marine Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 107158 - 107158

Published: April 1, 2025

Language: Английский

Citations

0
eDNA metabarcoding shows highly diverse but distinct shallow, mid-water, and deep-water eukaryotic communities within a marine biodiversity hotspot DOI Creative Commons
Patricia Cerrillo-Espinosa, Luis E. Calderón‐Aguilera, Pedro Medina‐Rosas

et al.

PeerJ, Journal Year: 2025, Volume and Issue: 13, P. e19249 - e19249

Published: April 22, 2025

As the impact of human activities continues to move beyond shallow coastal waters into deeper ocean layers, it is fundamental describe how diverse and distinct eukaryotic assemblages from deep layers are compared ecosystems. Environmental DNA (eDNA) metabarcoding has emerged as a molecular tool that can overcome many logistical barriers in exploring remote areas. We analyzed water samples (<30 m) collected via SCUBA diving adjacent (mid-water 30–150 m, deep-water >200 obtained with Niskin samplers within 16 locations recognized hotspot marine biodiversity (Gulf California, Mexico). sequenced an eDNA library targeting fragment COI gene eukaryotes. demonstrated diversity operational taxonomic units (OTUs) did not peak at regions mid-water benthic pelagic had similar levels sites, but detected significant vertical zonation between habitats. Our results suggest refugia hypothesis, which posits environments protect during environmental changes, enabling species survive repopulate shallower regions, supported for most taxa only applies about third (34.9%) 5,495 OTUs identified were shared layers. In comparison, rest exclusive either (30.8%) or zones (34.28%). The observation communities rich quite supports extending spatial management conservation tools habitats include fraction unique phylogenetic functional diversity.

Language: Английский

Citations

0
Marine conservation palaeobiology: What does the late Quaternary fossil record tell us about modern-day extinctions and biodiversity threats? DOI Creative Commons
Michał Kowalewski, Rafał Nawrot, Daniele Scarponi

et al.

Cambridge Prisms Extinction, Journal Year: 2023, Volume and Issue: 1

Published: Jan. 1, 2023

Near-time conservation palaeobiology uses palaeontological, archaeological and other geohistorical records to study the late Quaternary transition of biosphere from its pristine past present-day, human-altered state. Given scarcity data on recent extinctions in oceans, are critical for documenting human-driven extinction threats marine realm. The historical perspective can provide two key insights. First, archive state pre-industrial oceans at local, regional global scales, thus enabling detection extirpations as well shifts species distribution, abundance, body size ecosystem function. Second, we untangle contributions natural anthropogenic processes by centennial-to-millennial changes composition diversity ecosystems before after onset major human impacts. This long-term identifies recently emerging patterns that unprecedented, allowing us better assess biodiversity. Although global-scale not documented brackish invertebrates, studies point numerous extirpations, declines functions, increases range fragmentation dwindling abundance previously widespread species, indicating accumulating a debt.

Language: Английский

Citations

6
Trait Networks: Assessing Marine Community Resilience and Extinction Recovery DOI Creative Commons
Charlotte G. Clay, Alexander M. Dunhill, James Davis Reimer

et al.

iScience, Journal Year: 2024, Volume and Issue: 27(10), P. 110962 - 110962

Published: Sept. 17, 2024

Language: Английский

Citations

0
Genetic Determination of a Cryptic Species in the Littoraria Genus With Whole‐Genome Molecular Resolution DOI Creative Commons

Jia‐Wei Xu,

Jie Wang, Yun‐Wei Dong

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(12)

Published: Dec. 1, 2024

Recognizing cryptic species is crucial for understanding global biodiversity. The intertidal snail

Language: Английский

Citations

0
An integrated system to assess marine extinctions DOI Creative Commons

Arturo Yáñez-Arenas,

Miguel Nakamura, Andrew W. Trites

et al.

PLoS ONE, Journal Year: 2023, Volume and Issue: 18(10), P. e0293478 - e0293478

Published: Oct. 26, 2023

More than 20 global marine extinctions and over 700 local have reportedly occurred during the past 500 years. However, available methods to determine how many of these species can be confidently declared true disappearances tend data-demanding, time-consuming, not applicable all taxonomic groups or scales (global [G] [L]). We developed an integrated system assess (ISAME) that applied any group at geographic scale. ISAME method 10 case studies illustrate possible ways in which extinction status categorized as unverified, possibly extinct, extinct. Of we assessed, concludes 6 should unverified due problems with species' identity lack reliable evidence supporting their disappearance (periwinkle-Littoraria flammea [G], houting-Coregonus oxyrinchus long-spined urchin-Diadema antillarum [L], smalltooth sawfish-Pristis pectinata largetooth sawfish-P. pristis In contrast, classified Guadalupe storm-petrel (Oceanodroma macrodactyla [G]) lost shark (Carcharhinus obsolerus extinct because indicates is plausible-while sawfish [L] Steller's sea cow (Hydrodamalis gigas were confirmed Determining whether a population actually still extant needed guide conservation efforts prevent further biodiversity losses.

Language: Английский

Citations

0
Population structure of the critically endangered Brazilian guitarfish Pseudobatos horkelii (Rhinobatidae) revealed by double‐digest restriction site‐associated DNA sequencing DOI
Yan Torres, Matheus Marcos Rotundo,

Marcelo Vianna

et al.

Aquatic Conservation Marine and Freshwater Ecosystems, Journal Year: 2023, Volume and Issue: 34(1)

Published: Nov. 21, 2023

Abstract Molecular analysis is a powerful tool for assessing and developing conservation strategies endangered species. Elasmobranchs comprise one of the most threatened groups vertebrates, with about one‐third species subject to some degree threat. This case Pseudobatos horkelii , Brazilian guitarfish, which has suffered severe population reductions (>80%) in recent decades, mainly through coastal overfishing. Understanding genetic diversity this paramount applying adequate management strategies. In context, present study evaluated P. employing single‐nucleotide polymorphism (SNP) nuclear markers obtained by double‐digest restriction site‐associated DNA sequencing (ddRADseq). Samples collected three areas along Coast (Rio de Janeiro, São Paulo, Rio Grande do Sul) provided an average 1,565,339 reads 2,846 SNPs. The results indicate presence at least two genetically distinct populations Coast, molecular differences noted among clusters. heterozygosity excess observed all likely result bottleneck, probably resulting from overfishing habitat fragmentation. Moreover, upwelling phenomenon Cabo Frio, state may have significant influence over structure. gene flow between clusters was estimated as asymmetric studied. patterns be combination biological characteristics pressure past decades. evidence structured presenting provides insightful information development stock guitarfish.

Language: Английский

Citations

0
Author comment: Marine conservation palaeobiology: What does the late Quaternary fossil record tell us about modern-day extinctions and biodiversity threats? — R0/PR1 DOI Creative Commons
Michał Kowalewski

Published: May 8, 2023

Near-time conservation palaeobiology uses palaeontological, archaeological and other geohistorical records to study the late Quaternary transition of biosphere from its pristine past present-day, human-altered state. Given scarcity data on recent extinctions in oceans, are critical for documenting human-driven extinction threats marine realm. The historical perspective can provide two key insights. First, archive state pre-industrial oceans at local, regional global scales, thus enabling detection extirpations as well shifts species distribution, abundance, body size ecosystem function. Second, we untangle contributions natural anthropogenic processes by centennial-to-millennial changes composition diversity ecosystems before after onset major human impacts. This long-term identifies recently emerging patterns that unprecedented, allowing us better assess biodiversity. Although global-scale not documented brackish invertebrates, studies point numerous extirpations, declines functions, increases range fragmentation dwindling abundance previously widespread species, indicating accumulating a debt.

Language: Английский

Citations

0
Decision: Marine conservation palaeobiology: What does the late Quaternary fossil record tell us about modern-day extinctions and biodiversity threats? — R2/PR13 DOI Creative Commons
Michał Kowalewski, Rafał Nawrot, Daniele Scarponi

et al.

Published: Oct. 25, 2023

Near-time conservation palaeobiology uses palaeontological, archaeological and other geohistorical records to study the late Quaternary transition of biosphere from its pristine past present-day, human-altered state. Given scarcity data on recent extinctions in oceans, are critical for documenting human-driven extinction threats marine realm. The historical perspective can provide two key insights. First, archive state pre-industrial oceans at local, regional global scales, thus enabling detection extirpations as well shifts species distribution, abundance, body size ecosystem function. Second, we untangle contributions natural anthropogenic processes by centennial-to-millennial changes composition diversity ecosystems before after onset major human impacts. This long-term identifies recently emerging patterns that unprecedented, allowing us better assess biodiversity. Although global-scale not documented brackish invertebrates, studies point numerous extirpations, declines functions, increases range fragmentation dwindling abundance previously widespread species, indicating accumulating a debt.

Language: Английский

Citations

0