Journal article
Historical DNA documents long distance natal homing in marine fish
National Institute of Aquatic Resources, Technical University of Denmark1
Section for Marine Living Resources, National Institute of Aquatic Resources, Technical University of Denmark2
Greenland Climate Research Centre3
Stanford University4
Greenland Institute of Natural Resources5
Aarhus University6
The occurrence of natal homing in marine fish remains a fundamental question in fish ecology as its unequivocal demonstration requires tracking of individuals from fertilization to reproduction. Here, we provide evidence of long-distance natal homing (>1000 km) over more than 60 years in Atlantic cod (Gadus morhua), through genetic analysis of archived samples from marked and recaptured individuals.
Using a high differentiation single-nucleotide polymorphism assay, we demonstrate that the vast majority of cod tagged in West Greenland and recaptured on Icelandic spawning grounds belonged to the Iceland offshore population, strongly supporting a hypothesis of homing. The high degree of natal fidelity observed provides the evolutionary settings for development of locally adapted populations in marine fish and emphasize the need to consider portfolio effects in marine fisheries management strategies.
| Language: | English |
|---|---|
| Year: | 2016 |
| Pages: | 2727-2734 |
| ISSN: | 1365294x and 09621083 |
| Types: | Journal article |
| DOI: | 10.1111/mec.13580 |
| ORCIDs: | 0000-0003-1337-4661 , Pedersen, Martin Wæver , Hansen, Jakob Hemmer and Eg Nielsen, Einar |
Animal Identification Systems Animal Migration Animals DNA Fisheries Gadus morhua Genetics, Population Genotyping Techniques Greenland Historical DNA Homing Behavior Iceland Marine fish Natal homing Polymorphism, Single Nucleotide Reproduction Tagging data historical DNA marine fish natal homing tagging data
