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New record of Hexanchus griseus in the northwestern Mediterranean Sea with insights into its biology and feeding ecology: predator or scavenger?

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Mediterranean Marine Science  | ΕΚΤ eJournals   

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New record of Hexanchus griseus in the northwestern Mediterranean Sea with insights into its biology and feeding ecology: predator or scavenger? (EN)
RUIZ-GARCÍA, DAVID
MOURA, ANDRÉ E.
GARCÍA-SALINAS, PABLO
RAGA, JUAN ANTONIO
BARRÍA, CLAUDIO
DROMBY , MORGANE
On 15 March 2021, a male Hexanchus griseus was incidentally captured by a commercial bottom trawler at 550-730 m depth in the Gulf of Valencia (Spain). The specimen measured 251.8 cm in total length, weighed 86.2 kg and its reproductive system was fully developed, characterizing it as the smallest mature male bluntnose sixgill shark recorded in the Mediterranean Sea. The specimen hosted the ectoparasitic copepod Demoleus heptapus. Remains of a Stenella coeruleoalba calf were identified in its stomach content by applying molecular methods. The feeding behaviour of H. griseus as either actively preying on live cetaceans or as scavenging on carcasses is reviewed and discussed to better understand the species’ role in marine food webs. (EN)
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
reproductive biology (EN)
scavenging behaviour (EN)
predation (EN)
stomach content (EN)
striped dolphin (EN)
bluntnose sixgill shark (EN)
Hellenic Centre for Marine Research (HCMR)
Mediterranean Marine Science
Short Communication
Mediterranean Marine Science
English
2023-03-06
https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/29940
Hellenic Centre for Marine Research (EN)
1791-6763
1108-393X
Mediterranean Marine Science; Τόμ. 24 Αρ. 1 (2023): VOL 24, No 1 (2023); 109-116 (EL)
Mediterranean Marine Science; Vol. 24 No. 1 (2023): VOL 24, No 1 (2023); 109-116 (EN)
Copyright (c) 2023 Mediterranean Marine Science (EN)



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