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Title: Evidence of stock connectivity, hybridization, and misidentification in white anglerfish supports the need of a genetics-informed fisheries management framework
Authors: Aguirre-Sarabia, Imanol; Diaz-Arce, Natalia; Pereda-Agirre, Iker and Mendibil, Inaki; Urtizberea, Agurtzane; Gerritsen, Hans D. and Burns, Finlay; Holmes, Ian; Landa, Jorge; Coscia, Ilaria and Quinconces, Inaki; Santurtun, Marina; Zanzi, Antonella and Martinsohn, Jann T.; Rodriguez-Ezpeleta, Naiara
Citation: EVOLUTIONARY APPLICATIONS, 2021, 14, 2221-2230
Abstract: Understanding population connectivity within a species as well as potential interactions with its close relatives is crucial to define management units and to derive efficient management actions. However, although genetics can reveal mismatches between biological and management units and other relevant but hidden information such as species misidentification or hybridization, the uptake of genetic methods by the fisheries management process is far from having been consolidated. Here, we have assessed the power of genetics to better understand the population connectivity of white (Lophius piscatorius) and its interaction with its sister species, the black anglerfish (Lophius budegassa). Our analyses, based on thousands of genome-wide single nucleotide polymorphisms, show three findings that are crucial for white anglerfish management. We found (i) that white anglerfish is likely composed of a single panmictic population throughout the Northeast Atlantic, challenging the three-stock based management, (ii) that a fraction of specimens classified as white anglerfish using morphological characteristics are genetically identified as black anglerfish (L. budegassa), and iii) that the two Lophius species naturally hybridize leading to a population of hybrids of up to 20\% in certain areas. Our results set the basics for a genetics-informed white anglerfish assessment framework that accounts for stock connectivity, revises and establishes new diagnostic characters for Lophius species identification, and evaluates the effect of hybrids in the current and future assessments of the white anglerfish. Furthermore, our study contributes to provide additional evidence of the potentially negative consequences of ignoring genetic data for assessing fisheries resources.
Keywords: genetic connectivity; hybridization; Lophius budegassa; Lophius piscatorius; misidentification; SNPs; stock delimitation; LOPHIUS-PISCATORIUS LINNAEUS; POPULATION-STRUCTURE; BUDEGASSA SPINOLA; L. PISCATORIUS; TOOL SET; CONSERVATION; HYBRIDS; FISH; IDENTIFICATION; GROWTH
Issue Date: 2021
Publisher: WILEY
Type: Article
DOI: 10.1111/eva.13278
ISSN: 1752-4571
Funder: Joint Research Centre [JRC/IPR/2017/D.2/0016/NC]
Department of Education (Basque Government)Basque Government
Department of Environment, Planning, Agriculture and Fisheries (Basque Government)
Appears in Publication types:Artículos científicos

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