Endangered Coastal Elasmobranchs of the North-East Atlantic

Delaval, Aurélien; Wagner, Carola; Schwanck, Tanja N.; Wood, Fenella R.; Jones, Catherine S.; Hoarau, Galice; Noble, Leslie R.

doi:10.1016/b978-0-12-821139-7.00094-5

Cited by 7 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a matter of fact, in many areas of the world, a decline in cartilaginous stocks are generally recognised to be mainly due to increased fishing efforts [2,3]. In addition, habitat degradation and climate change have also played fundamental roles in the decline of Elasmobranchii populations [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Stock Dynamics of Elasmobranchii off the Southern Coast of Sicily by Using Trawl Survey Data

Falsone

Gancitano

Geraci

et al. 2022

Fishes

View full text Add to dashboard Cite

Elasmobranchii (sharks and rays), which have peculiar and vulnerable life-history traits, are highly threatened by fishing activities. Indeed, between 53% and 71% of Mediterranean elasmobranch species are at risk of extinction. In this context, using the abundance MSY (AMSY) model, the present study provides an assessment of 20 batoids and 16 shark species in the Strait of Sicily, sampled during a bottom trawl survey from 1995 to 2020. Overall, the outputs underline a progressively improving condition for shark and ray assemblages of both shelf and eurybathic zones. As for slope-dwelling species, a horseshoe-shaped dynamic, characterized by a progressive decrease in relative harvesting pressure and an increase in relative biomass followed by an increase in fishing pressure and decrease in biomass, was detected. The dynamics of the Elasmobranchii living in the Strait of Sicily appear to be affected by changes in the fishing patterns of trawlers, showing a shift from shallow water to bathyal fishing grounds and targeting deep-water red shrimp. In this context, it seems wise to limit the impact of deep-water fisheries on Elasmobranchii by reducing fishing efforts and implementing ad hoc management measures aimed at safeguarding these vulnerable species.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessing the Stock Dynamics of Elasmobranchii off the Southern Coast of Sicily by Using Trawl Survey Data

Falsone

Gancitano

Geraci

et al. 2022

Fishes

View full text Add to dashboard Cite

show abstract

“…Elasmobranchs are priority species for conservation due to their rapid decline determined by the unbalanced struggle between fragile bio-ecology and heavy and increasing anthropogenic impacts [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Among these anthropogenic stressors, targeted and untargeted fisheries represent the most relevant threat to cartilaginous fish populations [ 8 , 9 ], as well as habitat degradation and climate change [ 10 , 11 , 12 ]. The decline of cartilaginous fish populations is altering the marine food webs dramatically, as these animals are high-trophic level, even top predator, species with a fundamental role in maintaining balanced biodiversity in marine ecosystems [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Gradients of Variation in the At-Vessel Mortality Rate between Twelve Species of Sharks and Skates Sampled through a Fishery-Independent Trawl Survey in the Asinara Gulf (NW Mediterranean Sea)

Scacco

Fortibuoni

Baini

et al. 2023

Biology

View full text Add to dashboard Cite

Elasmobranchs are priority species for conservation due to their rapid decline determined by the unbalanced struggle between a fragile bio-ecology and strong anthropogenic impacts, such as bycatch from professional fishing. In this context, measuring species resistance to catch of poorly selective gear is of paramount importance. During June–October 2022, five experimental fishing campaigns were carried out in the Asinara Gulf (northern Sardinia) through 35 geographically and bathymetrically representative hauls of an area between 30 and 600 m in depth. Skates prevailed over sharks in the number of species, with seven and five species, respectively. We first evaluated the status of each individual with respect to stress due to the trawl’s catch using a three-graded scale. We also recorded individual biometrics (total and disk length, weight and sex, and maturity for males) on board by implementing the best practices in manipulating individuals for physiological recovery and release at sea. After capture, skates resulted in generally better conditions than sharks, although deepwater species of both groups exhibited a worse state than coastal species. The estimated vitality rates also depended on the size of the individuals. This work provides standardized data on the intermingled effect of size, species type, and inhabited depth on the resistance response of some elasmobranch species against capture by trawl fishery activities.

show abstract

“…Targeted and untargeted fisheries have negatively influenced cartilaginous fish populations over the past five decades (Pacoureau et al, 2021 ); the latter is considered the main culprit by the IUCN (Heppell et al, 1999 ; Musick et al, 2000 ). Additionally, habitat degradation and climate change are playing a key role in the rapid decline of elasmobranch populations (Delaval et al, 2021 ; Espinoza et al, 2020 ; Swift & Portnoy, 2021 ). This has led to repeated reports of an alarming global decline in cartilaginous fish populations at various scales (Baum et al, 2003 ; Davidson et al, 2016 ; Dulvy et al, 2014 ; Ferretti et al, 2008 , 2010 ; Myers et al, 2007 ; Pacoureau et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Exploring fishing threat at fleet segment and subregional scale: Least expert knowledge and a resilience versus disturbance‐based approach as conservation's tools for cartilaginous fish

Scacco

Crescenzo

Sbrana

2023

Ecology and Evolution

View full text Add to dashboard Cite

show abstract

Endangered Coastal Elasmobranchs of the North-East Atlantic

Cited by 7 publications

References 9 publications

Assessing the Stock Dynamics of Elasmobranchii off the Southern Coast of Sicily by Using Trawl Survey Data

Assessing the Stock Dynamics of Elasmobranchii off the Southern Coast of Sicily by Using Trawl Survey Data

Gradients of Variation in the At-Vessel Mortality Rate between Twelve Species of Sharks and Skates Sampled through a Fishery-Independent Trawl Survey in the Asinara Gulf (NW Mediterranean Sea)

Exploring fishing threat at fleet segment and subregional scale: Least expert knowledge and a resilience versus disturbance‐based approach as conservation's tools for cartilaginous fish

Contact Info

Product

Resources

About