Title
Is what you see what you get? Assessing external morphological identification of devil rays captured by small-scale fisheries in northern Peru using DNA barcoding
Date Issued
01 September 2023
Access level
metadata only access
Resource Type
research article
Author(s)
Pro Delphinus
Universidad Científica del Sur
Pro Delphinus
Pro Delphinus
Universidad Científica del Sur
Pro Delphinus
Instituto del Mar del Peru
Instituto del Mar del Peru
National Zoological Park
Abstract
Peru has globally important elasmobranch fisheries, and mobulids are no exception. However, little is known about Peru’s small-scale mobulid fisheries. Mismatches between fishing reports and studies regarding species occurrence suggest a problem in identification methodologies of mobulids at the species level. This is supported by evidence of external resemblance between species, landings of incomplete bodies, and the use of a single name for the five species known to occur in Peruvian waters (“Manta” for Mobula birostris, Mobula munkiana, Mobula mobular, Mobula tarapacana and Mobula thurstoni). Given the need for improved conservation and management measures of mobulids in Peru, we tested the applicability of DNA barcoding combined with morphological identification to better understand mobulid catches by small-scale fisheries in north Peru. A total of 137 samples of muscle tissue from mobulids captured during fishing activities were collected of which 99 amplified and analysed for Cytochrome C Oxidase Subunit I (COI). Samples of the five species known to occur in Peru were obtained, confirming captures of all of them by local fisheries. Morphological identification allowed us to correctly identify more than 94% of specimens to the species level even though most of them arrived butchered (e.g., only pectoral fins). Increased capacity building and training for morphological identification of mobulid species by field observers, authorities, and fishermen, combined with molecular tools, is highly recommended to avoid mistakes in landings reports and to correctly enforce conservation measures for these species.
Start page
97
End page
103
Volume
15
Issue
3
Scopus EID
2-s2.0-85160845123
Source
Conservation Genetics Resources
ISSN of the container
18777260
Sources of information: Scopus 4.03.2025 Scopus 4.03.2025