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Dispersal capacities of anadromous Allis shad population inferred from a coupled genetic and otolith approach: Dispersal capacities of anadromous Allis shad population inferred from a coupled genetic and otolith approach
- Source :
- Canadian Journal of Fisheries and Aquatic Sciences, Canadian Journal of Fisheries and Aquatic Sciences, NRC Research Press, 2015, 72 (7), pp.991-1003. ⟨10.1139/cjfas-2014-0510⟩, Canadian Journal of Fisheries and Aquatic Sciences, 2015, 72 (7), pp.991-1003. ⟨10.1139/cjfas-2014-0510⟩
- Publication Year :
- 2015
- Publisher :
- HAL CCSD, 2015.
-
Abstract
- cited By 4; International audience; Understanding dispersal capacities for migratory species is crucial for their management. By coupling otolith microchemistry and microsatellite genetic analyses, we provided information on snapshot and long-term dispersal capacity of Allis shad (Alosa alosa), an anadromous clupeid in decline throughout its distribution range. The allocation of natal origin was obtained from water chemistry and signatures in otoliths of juveniles and spawners within a Bayesian model. The majority of adults were assigned to a source river with high degrees of confidence; only 4% were undetermined. Otolith natal origins were used to define a population baseline by grouping individuals from the same natal river and not from the same sampling location as usually done. While A. alosa exhibited a high level of natal site fidelity, this species showed weak genetic structure, which supported the evidence of a substantial flow of strayers between river basins in the vicinity or at longer distances. However, long distance straying was probable but not frequent. In a context of global change, straying would be a key mechanism to drive dispersal and allow resilience of Allis shad populations.
- Subjects :
- 0106 biological sciences
food.ingredient
Range (biology)
Population
microsatellite dna
american shad
Aquatic Science
diadromous fish
010603 evolutionary biology
01 natural sciences
food
alosa-alosa
[SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry
medicine
Allis shad
education
Ecology, Evolution, Behavior and Systematics
Otolith
education.field_of_study
Alosa
Fish migration
sockeye-salmon
biology
Ecology
010604 marine biology & hydrobiology
early-life-history
15. Life on land
biology.organism_classification
Fishery
medicine.anatomical_structure
fresh-water
atlantic salmon
salmon oncorhynchus-tshawytscha
Genetic structure
Biological dispersal
natal origins
Subjects
Details
- Language :
- English
- ISSN :
- 0706652X and 12057533
- Database :
- OpenAIRE
- Journal :
- Canadian Journal of Fisheries and Aquatic Sciences, Canadian Journal of Fisheries and Aquatic Sciences, NRC Research Press, 2015, 72 (7), pp.991-1003. ⟨10.1139/cjfas-2014-0510⟩, Canadian Journal of Fisheries and Aquatic Sciences, 2015, 72 (7), pp.991-1003. ⟨10.1139/cjfas-2014-0510⟩
- Accession number :
- edsair.doi.dedup.....fc5e22e9295969e00b97b70bf59a8fde