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Aguirre‐Sarabia I, Díaz‐Arce N, Pereda‐Agirre I, Mendibil I, Urtizberea A, Gerritsen HD, Burns F, Holmes I, Landa J, Coscia I, Quincoces I, Santurtún M, Zanzi A, Martinsohn JT, Rodríguez‐Ezpeleta N. Evidence of stock connectivity, hybridization, and misidentification in white anglerfish supports the need of a genetics-informed fisheries management framework. Evol Appl 2021; 14:2221-2230. [PMID: 34603494 PMCID: PMC8477593 DOI: 10.1111/eva.13278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 06/29/2021] [Accepted: 07/02/2021] [Indexed: 11/27/2022] Open
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.
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Affiliation(s)
- Imanol Aguirre‐Sarabia
- Marine ResearchAZTI Basque Research and Technology Alliance (BRTA)SukarrietaBizkaiaSpain
| | - Natalia Díaz‐Arce
- Marine ResearchAZTI Basque Research and Technology Alliance (BRTA)SukarrietaBizkaiaSpain
| | - Iker Pereda‐Agirre
- Marine ResearchAZTI Basque Research and Technology Alliance (BRTA)SukarrietaBizkaiaSpain
| | - Iñaki Mendibil
- Marine ResearchAZTI Basque Research and Technology Alliance (BRTA)SukarrietaBizkaiaSpain
| | - Agurtzane Urtizberea
- Marine ResearchAZTI Basque Research and Technology Alliance (BRTA)SukarrietaBizkaiaSpain
| | | | - Finlay Burns
- Marine LaboratoryMarine Scotland ScienceAberdeenshireUK
| | - Ian Holmes
- Lowestoft LaboratoryCentre for Environment, Fisheries and Aquaculture ScienceLowestoftSuffolkUK
| | - Jorge Landa
- Centro Oceanográfico de SantanderInstituto Español de Oceanografía (IEO)SantanderSpain
| | - Ilaria Coscia
- School of Science, Engineering and EnvironmentUniversity of SalfordSalfordUK
| | - Iñaki Quincoces
- Marine ResearchAZTI Basque Research and Technology Alliance (BRTA)SukarrietaBizkaiaSpain
| | - Marina Santurtún
- Marine ResearchAZTI Basque Research and Technology Alliance (BRTA)SukarrietaBizkaiaSpain
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Wilson AM, Kiriakoulakis K, Raine R, Gerritsen HD, Blackbird S, Allcock AL, White M. Anthropogenic influence on sediment transport in the Whittard Canyon, NE Atlantic. Mar Pollut Bull 2015; 101:320-329. [PMID: 26530881 DOI: 10.1016/j.marpolbul.2015.10.067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/31/2015] [Accepted: 10/24/2015] [Indexed: 06/05/2023]
Abstract
Unusual peaks in turbidity were detected in two branches of the Whittard Canyon in June 2013. Enhanced nepheloid layers (ENLs) were defined as layers with concentrations of suspended particulate matter exceeding those of nepheloid layers typically observed in a given region. Here, ENLs had peaks in turbidity and elevated suspended particulate matter concentrations exceeding ~1 mg L(-1) with the largest ENLs measuring between ~2-8 mg L(-1). The ENLs measured ~100-260 m in vertical height and were detected in water depths of between 640 and 2880 m. Vessel Monitoring System data showed that high spatial and temporal activity of potential bottom trawling vessels coincided with the occurrence of the ENLs. Molar C/N ratios of the suspended organic material from the ENLs showed a high degree of degradation. Regular occurrences of such events are likely to have implications for increased sediment fluxes, burial of organic carbon and alteration of benthic and canyon ecosystems.
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Affiliation(s)
- Annette M Wilson
- School of Natural Sciences and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland.
| | - Kostas Kiriakoulakis
- School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool L3 3AF, UK
| | - Robin Raine
- School of Natural Sciences and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
| | | | - Sabena Blackbird
- School of Environmental Sciences, University of Liverpool, Liverpool L69 3BX, UK
| | - A Louise Allcock
- School of Natural Sciences and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
| | - Martin White
- School of Natural Sciences and Ryan Institute, National University of Ireland Galway, University Road, Galway, Ireland
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Bodey TW, Jessopp MJ, Votier SC, Gerritsen HD, Cleasby IR, Hamer KC, Patrick SC, Wakefield ED, Bearhop S. Seabird movement reveals the ecological footprint of fishing vessels. Curr Biol 2015; 24:R514-5. [PMID: 24892908 DOI: 10.1016/j.cub.2014.04.041] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Exploitation of the seas is currently unsustainable, with increasing demand for marine resources placing intense pressure on the Earth's largest ecosystem [1]. The scale of anthropogenic effects varies from local to entire ocean basins [1-3]. For example, discards of commercial capture fisheries can have both positive and negative impacts on scavengers at the population and community-level [2-6], although this is driven by individual foraging behaviour [3,7]. Currently, we have little understanding of the scale at which individual animals initiate such behaviours. We use the known interaction between fisheries and a wide-ranging seabird, the Northern gannet Morus bassanus[3], to investigate how fishing vessels affect individual birds' behaviours in near real-time. We document the footprint of fishing vessels' (≥15 m length) influence on foraging decisions (≤11 km), and a potential underlying behavioural mechanism, by revealing how birds respond differently to vessels depending on gear type and activity. Such influences have important implications for fisheries, including the proposed discard ban [8]), and wider marine management.
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Affiliation(s)
- Thomas W Bodey
- Centre for Ecology & Conservation, Penryn Campus, University of Exeter, Penryn, Cornwall, TR10 9EZ, UK.
| | - Mark J Jessopp
- Coastal & Marine Research Centre, University College Cork, Irish Naval Base, Haulbowline, Cork, Ireland
| | - Stephen C Votier
- Environmental and Sustainability Institute, Penryn Campus, University of Exeter, Penryn, Cornwall, TR10 9EZ, UK
| | | | - Ian R Cleasby
- Centre for Ecology & Conservation, Penryn Campus, University of Exeter, Penryn, Cornwall, TR10 9EZ, UK
| | - Keith C Hamer
- Institute of Integrative & Comparative Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Samantha C Patrick
- School of Natural & Social Sciences, University of Gloucestershire, Cheltenham, GL50 4HZ, UK
| | - Ewan D Wakefield
- Institute of Integrative & Comparative Biology, University of Leeds, Leeds, LS2 9JT, UK; Department of Zoology, South Parks Road, University of Oxford, OX1 3PS, UK
| | - Stuart Bearhop
- Centre for Ecology & Conservation, Penryn Campus, University of Exeter, Penryn, Cornwall, TR10 9EZ, UK.
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