Can different combinations of natural tags identify river herring natal origin at different levels of stock structure?

Autor:	Eric P. Palkovacs, Sara M. Turner, Karin E. Limburg
Rok vydání:	2015
Předmět:	Fish migration Alosa food.ingredient biology Ecology Alosa pseudoharengus Alewife Aquatic Science biology.organism_classification Fishery food medicine.anatomical_structure Herring Genetic variation Blueback herring medicine Ecology Evolution Behavior and Systematics Otolith
Zdroj:	Canadian Journal of Fisheries and Aquatic Sciences. 72:845-854
ISSN:	1205-7533 0706-652X
DOI:	10.1139/cjfas-2014-0403
Popis:	We compared the accuracy of different combinations of natural markers, specifically otolith elemental (Sr:Ca and Ba:Ca) and isotopic ratios (87:86Sr) with and without genetic stock constraints to evaluate their ability to distinguish among anadromous river herring (i.e., alewife, Alosa pseudoharengus, and blueback herring, Alosa aestivalis) populations from their US ranges. Model accuracy increased when constrained to a regional level by genetic stocks. Both species were misclassified to sites up to 1000 km from their collection location when only otolith chemistry was used. The inclusion of genetic constraints improved reclassification rates, and the longer time scale of genetic variation makes this method less sensitive to interannual variation. We recommend the combined approach of otolith chemistry and genetics as a means to trace river herring in marine bycatch back to river of origin.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::da1842eeb9221531376f7c037b02945d https://doi.org/10.1139/cjfas-2014-0403 Zobrazit plný text záznamu Plný text ve formátu PDF