NDLI: Pedigree analysis of recaptured fish in the stock enhancement program of spotted halibut Verasper variegatus

Content Provider	Springer Nature Link
Author	Ortega Villaizán Romo, María Del Mar Aritaki, Masato Taniguchi, Nobuhiko
Copyright Year	2006
Abstract	Spotted halibut Verasper variegatus hatchery juveniles produced in 2002 were genotyped using three microsatellite DNA markers (msDNA) and then released into natural waters. Subsequently, recaptured individuals were examined using msDNA. In order to evaluate the effectiveness of the stock enhancement program, from the genetic point of view, a pairwise F $_{ST}$ test was implemented to estimate the genetic divergence between the wild captive broodstock, the hatchery offspring and the recaptured samples. The analysis showed significant differentiation between the broodstock and recaptured samples. Pedigree determination using msDNA was used to calculate the effective population size of the recaptured stock, which was found to be very low (N $_{e}$≈8). Equal family survivability was observed between the two recaptured stocks, but not between the released and recaptured stock. The number of identified families was higher and more equalized in the hatchery offspring compared to the recaptured samples, where the number of families declined. This fact was caused by an unequal family survivability just before or just after release. Separately, the number of contributing parents to the hatchery offspring was lower than the broodstock census number. Consequently, these two facts caused the genetic divergence of the recaptured stock from the broodstock.
Starting Page	48
Ending Page	52
Page Count	5
File Format	PDF
ISSN	09199268
Journal	Fisheries Science
Volume Number	72
Issue Number	1
e-ISSN	14442906
Language	English
Publisher	Springer-Verlag
Publisher Date	2006-01-01
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	effective population size hatchery stock pedigree tracing recaptured fish spotted halibut stock enhancement survival rate Fish & Wildlife Biology & Management Freshwater & Marine Ecology Food Science
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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