Fine-scale environmentally associated spatial structure of lumpfish ( Cyclopterus lumpus ) across the Northwest Atlantic.

Autor: Langille BL; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Kess T; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Brachmann M; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Nugent CM; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Messmer A; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Duffy SJ; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Holborn MK; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Van Wyngaarden M; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Knutsen TM; AquaGen AS Trondheim Norway., Kent M; Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Centre for Integrative Genetics Norwegian University of Life Sciences Ås Norway., Boyce D; Department of Ocean Sciences, Ocean Sciences Centre Memorial University of Newfoundland St John's Newfoundland and Labrador Canada., Gregory RS; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada., Gauthier J; Maurice Lamontagne Institute, Fisheries and Oceans Canada Quebec Canada., Fairchild EA; Department of Biological Sciences University of New Hampshire Durham New Hampshire USA., Pietrak M; USDA, Agricultural Research Service National Cold Water Marine Aquaculture Center Franklin Maine USA., Eddy S; University of Maine Center for Cooperative Aquaculture Research Franklin Maine USA., de Leaniz CG; Centre for Sustainable Aquatic Research, Swansea University Swansea UK., Consuegra S; Centre for Sustainable Aquatic Research, Swansea University Swansea UK., Whittaker B; Centre for Sustainable Aquatic Research, Swansea University Swansea UK., Bentzen P; Marine Gene Probe Laboratory, Department of Biology Dalhousie University Halifax Nova Scotia Canada., Bradbury IR; Northwest Atlantic Fisheries Centre, Fisheries and Oceans Canada St. John's Newfoundland and Labrador Canada.; Marine Gene Probe Laboratory, Department of Biology Dalhousie University Halifax Nova Scotia Canada.
Jazyk: angličtina
Zdroj: Evolutionary applications [Evol Appl] 2023 Sep 05; Vol. 16 (9), pp. 1619-1636. Date of Electronic Publication: 2023 Sep 05 (Print Publication: 2023).
DOI: 10.1111/eva.13590
Abstrakt: Lumpfish, Cyclopterus lumpus , have historically been harvested throughout Atlantic Canada and are increasingly in demand as a solution to controlling sea lice in Atlantic salmon farms-a process which involves both the domestication and the transfer of lumpfish between geographic regions. At present, little is known regarding population structure and diversity of wild lumpfish in Atlantic Canada, limiting attempts to assess the potential impacts of escaped lumpfish individuals from salmon pens on currently at-risk wild populations. Here, we characterize the spatial population structure and genomic-environmental associations of wild populations of lumpfish throughout the Northwest Atlantic using both 70K SNP array data and whole-genome re-sequencing data (WGS). At broad spatial scales, our results reveal a large environmentally associated genetic break between the southern populations (Gulf of Maine and Bay of Fundy) and northern populations (Newfoundland and the Gulf of St. Lawrence), linked to variation in ocean temperature and ice cover. At finer spatial scales, evidence of population structure was also evident in a distinct coastal group in Newfoundland and significant isolation by distance across the northern region. Both evidence of consistent environmental associations and elevated genome-wide variation in F ST values among these three regional groups supports their biological relevance. This study represents the first extensive description of population structure of lumpfish in Atlantic Canada, revealing evidence of broad and fine geographic scale environmentally associated genomic diversity. Our results will facilitate the commercial use of lumpfish as a cleaner fish in Atlantic salmon aquaculture, the identification of lumpfish escapees, and the delineation of conservation units of this at-risk species throughout Atlantic Canada.
Competing Interests: We declare no conflicts of interest.
(© 2023 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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