Feeding ecology and reproduction biology of Glaucostegus cemiculus (Geoffroy Saint-Hilaire, 1817) from the eastern Aegean Sea

Bengil, Elizabeth G. T.; Bengil, Fethi; Özaydın, Okan

doi:10.1016/j.rsma.2019.100952

Cited by 4 publications

(3 citation statements)

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“…The two previous studies on the diet of the blackchin guitarfish, carried out in Tunisia (Capapé et al, 2004) and Turkey (Bengi̇l et al, 2020), also found that this species preys mostly on crustaceans and to a lesser extent on bony fish. Using DNA metabarcoding we were able to identify a higher number of prey and achieved a higher taxonomic resolution than those previous studies.…”

Section: Figurementioning

confidence: 85%

“…Blackchin guitarfish occurs in neritic waters, feeding mostly on crustacea and fish in sandy and muddy substrates (Bengi̇l et al, 2020; Capapé et al, 2004). Despite the worrying conservation status and the immediate calls for more studies and conservation action ( e.g ., Leurs et al, 2023; Moore, 2017), the ecology and baseline data, such as diet, of this species are still poorly known.…”

Section: Figurementioning

confidence: 99%

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Diet of the critically endangered blackchin guitarfish Glaucostegus cemiculus revealed using DNA metabarcoding

Correia,

Granadeiro,

Santos

et al. 2023

Journal of Fish Biology

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We present the first assessment of the diet of the blackchin guitarfish Glaucostegus cemiculus (Geoffroy Saint‐Hilaire, 1817) for West Africa, using DNA metabarcoding on stomach contents of individuals captured in the Bijagós archipelago, Guinea‐Bissau. The diet was dominated by crustaceans, particularly caramote prawn Penaeus kerathurus (frequency of occurrence FO=74%; numerical frequency NF=54%) and fiddler crab Afruca tangeri (FO=74%; NF=12%). Bony fishes occurred in 30% of the stomachs. We highlight the importance of conservation action for intertidal habitats and their associated benthic invertebrates for the survival of the critically endangered blackchin guitarfish.This article is protected by copyright. All rights reserved.

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Section: Figurementioning

confidence: 85%

Section: Figurementioning

confidence: 99%

Diet of the critically endangered blackchin guitarfish Glaucostegus cemiculus revealed using DNA metabarcoding

Correia,

Granadeiro,

Santos

et al. 2023

Journal of Fish Biology

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“…Historically, elasmobranch species diversity and richness were considered greatest in the western Mediterranean Sea, but in recent years there have been a greater number of local extinctions in the west and an increase in threats throughout the Mediterranean (Dulvy et al, 2016;Serena et al, 2020). There have been fewer studies of elasmobranch diversity in the eastern Mediterranean, although Türkiye alone has over three quarters of all Mediterranean elasmobranch species (Bengil and Basusta, 2018), with known nursery areas for Carcharhinus plumbeus (Nardo 1827, sandbar sharks), Rhinobatos rhinobatos (Linnaeus 1758, common guitarfish) and Glaucostegus cemiculus (Geoffroy St. Hilaire 1817, blackchin guitarfish) in the coastal waters of Türkiye (Bengil et al, 2020;Basusta et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Diversity and distribution of elasmobranchs in the coastal waters of Cyprus: using bycatch data to inform management and conservation

O’Keefe,

Bengil,

Palmer

et al. 2023

Front. Mar. Sci.

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IntroductionLoss of biodiversity in marine ecosystems is a globally acknowledged problem. To address this and avoid extinctions, improved conservation is required to protect and restore our oceans. Elasmobranch species are considered the second most threatened vertebrate lineage, with overfishing considered the most important driver of declines. The Mediterranean Sea is a hotspot for elasmobranchs, with the eastern basin considered a data-poor area. MethodsThis study sought to address that deficiency, using bycatch data to assess the diversity and distribution of elasmobranch species caught as a result of commercial fishing in Northern Cyprus from 2018 to 2022. ResultsThirty-six elasmobranch species were recorded, including 24 new records for Northern Cyprus, representing 41% of all species recorded in the Mediterranean. Of these 36 species, 61% are listed on the IUCN Red List as globally threatened (Critically Endangered, Endangered or Vulnerable). Of the species recorded, 71% of sharks (n=17), and 53% of batoids (skates and rays; n=19) are listed as threatened. We present data on the distribution of captures and size classes and infer life stage from these data. DiscussionOur study demonstrates the importance of the coastal waters of Cyprus for multiple life stages of a broad range of elasmobranch species. As most elasmobranchs caught are retained for bait, subsistence or trade, our study has highlighted the need to update the regulations for this small-scale fishery, and led to a recent amendment to prohibit trade in all species listed under the Barcelona Convention.

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Beyond the anchovy: Unveiling the Black Sea’s elasmobranchs

Bengil,

Erdoğan Sağlam

2024

Zoology in the Middle East

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Feeding ecology and reproduction biology of Glaucostegus cemiculus (Geoffroy Saint-Hilaire, 1817) from the eastern Aegean Sea

Cited by 4 publications

References 10 publications

Diet of the critically endangered blackchin guitarfish Glaucostegus cemiculus revealed using DNA metabarcoding

Diet of the critically endangered blackchin guitarfish Glaucostegus cemiculus revealed using DNA metabarcoding

Diversity and distribution of elasmobranchs in the coastal waters of Cyprus: using bycatch data to inform management and conservation

Beyond the anchovy: Unveiling the Black Sea’s elasmobranchs

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