TY - JOUR
T1 - Captive breeding of the endangered San Esteban Chuckwalla, Sauromalus varius
T2 - Effects of a decade of captive breeding on maintaining genetic diversity
AU - McAliley, L. Rex
AU - Willis, Ray E.
AU - Ivanyi, Craig
AU - Densmore, Llewellyn D.
PY - 2016/12
Y1 - 2016/12
N2 - Increasingly, endangered vertebrate species are being maintained in captive breeding programs as a method of ensuring their survival. Despite these increasing numbers of captive breeding colonies, there have been few studies designed to examine the long-term success of these programs at maintaining genetic diversity. To elucidate the effectiveness of a captive breeding colony of the endangered species Sauromalus varius (the San Esteban Chuckwalla) at maintaining genetic variation over time, we employed seven polymorphic microsatellite loci. F-statistics and analysis of molecular variance strongly suggest that the colony is exhibiting genetic signs of inbreeding. Genetic variation within the colony has decreased by an average of 12.2% within the colony between the 2 y sampled with an average loss of 30.5% of genetic variation within offspring. This study provides an important test of the effectiveness of captive breeding colonies at maintaining genetic variation within a vertebrate group over time.
AB - Increasingly, endangered vertebrate species are being maintained in captive breeding programs as a method of ensuring their survival. Despite these increasing numbers of captive breeding colonies, there have been few studies designed to examine the long-term success of these programs at maintaining genetic diversity. To elucidate the effectiveness of a captive breeding colony of the endangered species Sauromalus varius (the San Esteban Chuckwalla) at maintaining genetic variation over time, we employed seven polymorphic microsatellite loci. F-statistics and analysis of molecular variance strongly suggest that the colony is exhibiting genetic signs of inbreeding. Genetic variation within the colony has decreased by an average of 12.2% within the colony between the 2 y sampled with an average loss of 30.5% of genetic variation within offspring. This study provides an important test of the effectiveness of captive breeding colonies at maintaining genetic variation within a vertebrate group over time.
UR - http://www.scopus.com/inward/record.url?scp=85008952988&partnerID=8YFLogxK
U2 - 10.1894/0038-4909-61.4.279
DO - 10.1894/0038-4909-61.4.279
M3 - Article
AN - SCOPUS:85008952988
SN - 0038-4909
VL - 61
SP - 279
EP - 285
JO - Southwestern Naturalist
JF - Southwestern Naturalist
IS - 4
ER -