[MARMAM] New publication "Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands"

Raquel Puig-Lozano raquelpuiglozano at gmail.com
Wed Oct 21 02:52:19 PDT 2020


Good morning:


We would like to send to the email list the following message:

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Dear MARMAM Colleagues,



We are happy to announce our latest open access publication in Frontiers in
Veterinary Science: *"Retrospective Study of Fishery Interactions in
Stranded Cetaceans, Canary Islands" (2020) *Puig-Lozano R, Fernández A,
Sierra E, Saavedra P, Suárez-Santana CM, De la Fuente J, Díaz-Delgado J,
Godinho A, García-Álvarez N, Zucca D, Xuriach A, Arregui M, Felipe-Jiménez
I, Consoli F, Díaz-Santana PJ,  Segura-Göthlin S, Câmara N, Rivero MA,
Sacchini S, Bernaldo de Quirós Y and Arbelo M.

Abstract: Estimating cetacean interactions with fishery activities is
challenging. Bycatch and chronic entanglements are responsible for
thousands of cetacean deaths per year globally. This study represents the
first systematic approach to the postmortem investigation of fishery
interactions in stranded cetaceans in the Canary Islands. We
retrospectively studied 586 cases necropsied between January 2000 and
December 2018. Of the cases with a known cause of death, 7.4% (32/453) were
due to fishery interactions, and the Atlantic spotted dolphin (*Stenella
frontalis*) was the most affected species [46.9% (15/32)]. Three types of
fishery interactions were recognized by gross findings: bycatch [65.6%
(21/32)], chronic entanglements [18.8% (6/32)], and fishermen aggression
[15.6% (5/32)]. Among the bycaught cases, we differentiated the dolphins
that died because of ingestion of longline hooks [23.8% (5/21)] from those
that died because of fishing net entrapments [76.2% (16/21)], including
dolphins that presumably died at depth due to peracute underwater
entrapment (PUE) [37.5% (6/16)], dolphins that were hauled out alive and
suffered additional trauma during handling [43.8% (7/16)], and those that
were released alive but became stranded and died because of fishery
interactions [18.7% (3/16)]. Gross and histologic findings of animals in
each group were presented and compared. The histological approach confirmed
gross lesions and excluded other possible causes of death. Cetaceans in
good-fair body condition and shallow diving species were significantly more
affected by fishery interactions, in agreement with the literature. Low
rates of fishery interactions have been described, compared with other
regions. However, within the last few years, sightings of entangled live
whales, especially the minke whale (*Balaenoptera acutorostrata*) and
Bryde's whale (*B. edeni*), have increased. This study contributes to
further improvement of the evaluation of different types of fishery
interactions and may facilitate the enforcement of future conservation
policies to preserve cetacean populations in the Canary Islands.

Link to full text:  https://doi.org/10.3389/fvets.2020.567258

All the best,

Raquel Puig Lozano
PhD student,
Veterinary Histology and Pathology, Atlantic Center for Cetacean Research,
University Institute of Animal Health and Food Safety (IUSA),
Veterinary School, University of Las Palmas de Gran Canaria,
Canary Islands, Spain
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Thank you very much,

Kind regards,

Raquel Puig Lozano
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