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Mejía-Ruíz P, Perez-Enriquez R, Mares-Mayagoitia JA, Valenzuela-Quiñonez F. Population genomics reveals a mismatch between management and biological units in green abalone ( Haliotis fulgens). PeerJ 2020; 8:e9722. [PMID: 32879800 PMCID: PMC7443094 DOI: 10.7717/peerj.9722] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 07/23/2020] [Indexed: 11/20/2022] Open
Abstract
Effective fishery management strategies should be based on stock delimitation and knowledge of the spatial scale at which species are distributed. However, a mismatch often occurs between biological and management units of fishery resources. The green abalone (Haliotis fulgens) supports an important artisanal fishery in the west coast of the Baja California Peninsula (BCP), Mexico, which has shown a declining tendency despite the several management measures. Thus, the aim of this study was to characterize the spatial patterns of neutral genomic variation of green abalone along the BCP to test whether the genomic structure patterns support the current green abalone management areas. To test this hypothesis, a set of 2,170 putative neutral single nucleotide polymorphisms discovered by a double digest restriction-site associated DNA approach was used on 10 locations along the BCP. The results revealed a population structure with three putative groups: Guadalupe Island and northern and southern BCP locations. The contemporary gene flow might be explained by local oceanographic features, where it is bidirectional within the southern region but with a predominant southward flow from the northern region. These findings indicated that the administrative areas did not match the biological units of H. fulgens fishery; hence, the stock assessment and management areas should be revised.
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Affiliation(s)
- Paulina Mejía-Ruíz
- Centro de Investigaciones Biológicas del Noroeste S.C., La Paz, Baja California Sur, México
| | - Ricardo Perez-Enriquez
- Centro de Investigaciones Biológicas del Noroeste S.C., La Paz, Baja California Sur, México
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González-Wevar C, Salinas P, Hüne M, Segovia N, Vargas-Chacoff L, Oda E, Poulin E. Contrasting Genetic Structure and Diversity of Galaxias maculatus (Jenyns, 1848) Along the Chilean Coast: Stock Identification for Fishery Management. J Hered 2015; 106 Suppl 1:439-47. [PMID: 26245779 DOI: 10.1093/jhered/esv005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Galaxias maculatus (Pisces: Galaxiidae) commonly known as "puye" has a disjunct distribution along the Southern Hemisphere including landlocked and migratory populations at latitudes over 30°S in South America, Australia, Tasmania, and New Zealand. Chilean artisanal fishery of G. maculatus has become less important as a resource due to multiple factors including overexploitation, pollution, introduction of predators, and competitors. At the same time, the current conservation status of the species in Chile is still uncertain. Here, we used mtDNA control region sequences (925bp) to investigate main patterns of genetic diversity and structure in populations from 2 biogeographic areas along the Chilean coast. Extremely high levels of genetic diversity characterize the species, suggesting a low amount of influence of the last glacial cycle over its demography compared with other studies in freshwater and marine South American fishes. However, we recognized contrasting genetic patterns between the Intermediate Area (between 30°S and 42°S) and the Magellanic Province (between 42°S and 56°S). On the one hand, over a narrow geographical range (<200 km) each Intermediate Area estuarine population constitutes a different genetic unit. On the other hand, the Magellanic populations of the species exhibited low levels of differentiation in an area extending for more than 500 km. Such differences may be a consequence of different coastal configurations, oceanographic regimes, and Quaternary glacial histories. Finally, our results support the existence of different stock units for G. maculatus and this information should be integrated in future management strategies and aquaculture programs for this species.
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Affiliation(s)
- Claudio González-Wevar
- From the GAIA-Antártica, Universidad de Magallanes, Avenida Bulnes 01890, Punta Arenas 621-0427, Chile (González-Wevar); the Laboratorio de Ecología Molecular, Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile (González-Wevar, Salinas, Hüne, Segovia, Oda, and Poulin); and the Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile (Vargas-Chacoff).
| | - Pilar Salinas
- From the GAIA-Antártica, Universidad de Magallanes, Avenida Bulnes 01890, Punta Arenas 621-0427, Chile (González-Wevar); the Laboratorio de Ecología Molecular, Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile (González-Wevar, Salinas, Hüne, Segovia, Oda, and Poulin); and the Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile (Vargas-Chacoff)
| | - Mathias Hüne
- From the GAIA-Antártica, Universidad de Magallanes, Avenida Bulnes 01890, Punta Arenas 621-0427, Chile (González-Wevar); the Laboratorio de Ecología Molecular, Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile (González-Wevar, Salinas, Hüne, Segovia, Oda, and Poulin); and the Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile (Vargas-Chacoff)
| | - Nicolás Segovia
- From the GAIA-Antártica, Universidad de Magallanes, Avenida Bulnes 01890, Punta Arenas 621-0427, Chile (González-Wevar); the Laboratorio de Ecología Molecular, Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile (González-Wevar, Salinas, Hüne, Segovia, Oda, and Poulin); and the Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile (Vargas-Chacoff)
| | - Luis Vargas-Chacoff
- From the GAIA-Antártica, Universidad de Magallanes, Avenida Bulnes 01890, Punta Arenas 621-0427, Chile (González-Wevar); the Laboratorio de Ecología Molecular, Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile (González-Wevar, Salinas, Hüne, Segovia, Oda, and Poulin); and the Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile (Vargas-Chacoff)
| | - Esteban Oda
- From the GAIA-Antártica, Universidad de Magallanes, Avenida Bulnes 01890, Punta Arenas 621-0427, Chile (González-Wevar); the Laboratorio de Ecología Molecular, Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile (González-Wevar, Salinas, Hüne, Segovia, Oda, and Poulin); and the Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile (Vargas-Chacoff)
| | - Elie Poulin
- From the GAIA-Antártica, Universidad de Magallanes, Avenida Bulnes 01890, Punta Arenas 621-0427, Chile (González-Wevar); the Laboratorio de Ecología Molecular, Instituto de Ecología y Biodiversidad, Departamento de Ciencias Ecológicas, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Santiago, Chile (González-Wevar, Salinas, Hüne, Segovia, Oda, and Poulin); and the Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile (Vargas-Chacoff)
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Fenberg PB, Posbic K, Hellberg ME. Historical and recent processes shaping the geographic range of a rocky intertidal gastropod: phylogeography, ecology, and habitat availability. Ecol Evol 2014; 4:3244-55. [PMID: 25473477 PMCID: PMC4222211 DOI: 10.1002/ece3.1181] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 06/27/2014] [Accepted: 07/13/2014] [Indexed: 11/20/2022] Open
Abstract
Factors shaping the geographic range of a species can be identified when phylogeographic patterns are combined with data on contemporary and historical geographic distribution, range-wide abundance, habitat/food availability, and through comparisons with codistributed taxa. Here, we evaluate range dynamism and phylogeography of the rocky intertidal gastropod Mexacanthina lugubris lugubris across its geographic range – the Pacific coast of the Baja peninsula and southern California. We sequenced mitochondrial DNA (CO1) from ten populations and compliment these data with museum records, habitat availability and range-wide field surveys of the distribution and abundance of M. l. lugubris and its primary prey (the barnacle Chthamalus fissus). The geographic range of M. l. lugubris can be characterized by three different events in its history: an old sundering in the mid-peninsular region of Baja (∼ 417,000 years ago) and more recent northern range expansion and southern range contraction. The mid-peninsular break is shared with many terrestrial and marine species, although M. l. lugubris represents the first mollusc to show it. This common break is often attributed to a hypothesized ancient seaway bisecting the peninsula, but for M. l. lugubris it may result from large habitat gaps in the southern clade. Northern clade populations, particularly near the historical northern limit (prior to the 1970s), have high local abundances and reside in a region with plentiful food and habitat – which makes its northern range conducive to expansion. The observed southern range contraction may result from the opposite scenario, with little food or habitat nearby. Our study highlights the importance of taking an integrative approach to understanding the processes that shape the geographic range of a species via combining range-wide phylogeography data with temporal geographic distributions and spatial patterns of habitat/food availability.
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Affiliation(s)
- Phillip B Fenberg
- Ocean and Earth Science, National Oceanography Centre, University of Southampton Southampton, U.K
| | - Karine Posbic
- Department of Biological Sciences, Louisiana State University Baton Rouge, Louisiana
| | - Michael E Hellberg
- Department of Biological Sciences, Louisiana State University Baton Rouge, Louisiana
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