Deep-sea sharks as by-catch of an experimental fishing survey for black scabbardfishes (<em>Aphanopus spp.</em>) off the Canary Islands (NE Atlantic)

Mafalda Freitas; Luísa Costa; João Delgado; Sebastián Jiménez; Viriato Timóteo; Joana Vasconcelos; José A. González

doi:10.3989/scimar.04793.03A

Authors

Mafalda Freitas OOM - Funchal Marine Biology Station and Marine and Environmental Sciences Centre (MARE) - OOM - Funchal Natural History Museum https://orcid.org/0000-0002-2758-7177
Luísa Costa OOM - Funchal Marine Biology Station and Marine and Environmental Sciences Centre (MARE) https://orcid.org/0000-0001-9107-6200
João Delgado OOM - Research Service, Regional Directorate of Fisheries https://orcid.org/0000-0003-4268-7202
Sebastián Jiménez Instituto Español de Oceanografía, Centro Oceanográfico de Canarias https://orcid.org/0000-0002-6534-4096
Viriato Timóteo OOM - Research Service, Regional Directorate of Fisheries
Joana Vasconcelos OOM - Research Service, Regional Directorate of Fisheries https://orcid.org/0000-0003-3880-2554
José A. González Applied Marine Ecology and Fisheries, i-UNAT, Universidad de Las Palmas de Gran Canaria https://orcid.org/0000-0001-8584-6731

DOI:

https://doi.org/10.3989/scimar.04793.03A

Keywords:

by-catch, deep-sea Chondrichthyes, midwater drifting longline, NE Atlantic

Abstract

The deep-sea sharks associated as by-catch of the Madeiran midwater drifting longline fishery for scabbardfishes (Aphanopus spp.) were investigated by means of an experimental survey at 800-1200 m depth within the Canary Islands Exclusive Economic Zone, whose fishing grounds have been exploited during the past 15 years. Nine species of chondrichthyans were identified, belonging to five families: Pseudotriakidae, Centrophoridae, Etmopteridae, Somniosidae and Chimaeridae. Data on length, weight and sex ratio for the 436 chondrichthyan individuals caught in the March 2009 survey are given. Several voucher specimens of each species caught were deposited in the collections of the Natural History Museum of Funchal.

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References

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