In:
PLOS ONE, Public Library of Science (PLoS), Vol. 18, No. 10 ( 2023-10-4), p. e0292495-
Abstract:
Atlantic cod is a keystone species that remains among the most economically important demersal fish in the North Atlantic. Throughout its distribution range, Atlantic cod is composed of populations with varying environmental preferences and migratory propensities. This life-history variation is likely to have contributed to the niche width and large population sizes of Atlantic cod, and its relative resilience to environmental change and exploitation. The Icelandic cod stock is currently managed as a single unit, but early research indicates population variation by depth and temperature and distinct offshore and inshore spawning components. Pelagic 0-group juveniles from different spawning grounds coexist in nursery areas around Iceland, but their genetic composition or habitat partitioning had not been examined post benthic settlement. In the current study we examine the genetic composition of Atlantic cod juvenile aggregations at nearshore nursery grounds in NW-Iceland and report distinct segregation by the depth of offshore and inshore juvenile cod. The physiological mechanism of this segregation is not known, but the pattern demonstrates the need to consider population structure at nursery grounds in the application of marine spatial planning and other area-based conservation tools.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0292495
DOI:
10.1371/journal.pone.0292495.g001
DOI:
10.1371/journal.pone.0292495.g002
DOI:
10.1371/journal.pone.0292495.g003
DOI:
10.1371/journal.pone.0292495.g004
DOI:
10.1371/journal.pone.0292495.t001
DOI:
10.1371/journal.pone.0292495.t002
DOI:
10.1371/journal.pone.0292495.t003
DOI:
10.1371/journal.pone.0292495.s001
DOI:
10.1371/journal.pone.0292495.s002
DOI:
10.1371/journal.pone.0292495.s003
DOI:
10.1371/journal.pone.0292495.s004
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2023
detail.hit.zdb_id:
2267670-3
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