1992 Hedrick 1999) have been the workhorses in this regard for over 65 years. Nei 1973 Weir & Cockerham 1984 Excoffier et al. F-statistics (Wright 1943) and their analogues (e.g. More broadly, our results contribute to a growing number of studies showing that low F ST and high family structure across populations can coexist, illuminating the foundations of cryptic genetic patterns and the nature of marine dispersal.ĭetermining the temporal and spatial scales of dispersal and gene flow across species’ ranges is essential for effective conservation and management. Instead, these lobsters appear to either have substantial localized recruitment or maintain planktonic larval cohesiveness whereby siblings more likely settle together than disperse across sites. interruptus does not maintain a single homogenous population, despite extreme dispersal potential. Sites with elevated mean kinship were geographically proximate to regions of high upwelling intensity ( R 2 = 0.41, P = 0.0009). Moreover, a higher proportion of kin within sites strongly correlates with greater genetic differentiation among sites ( D est_Chao, R 2 = 0.66, P < 0.005).
However, kinship levels differ significantly among sites (pseudo- F 16,988 = 1.39, P = 0.001), and ten of 17 sample sites have significantly greater numbers of kin than expected by chance ( P < 0.05). This result would typically be interpreted as unexplainable, chaotic genetic patchiness. Significant population structure does not correlate with distance between sampling locations, and pairwise F ST between adjacent sites often exceeds that among geographically distant locations. We investigate range-wide population genetic structure of the California spiny (or red rock) lobster ( Panulirus interruptus) and find slight, but significant global population differentiation in mtDNA (Φ ST = 0.006, P = 0.001 D est_Chao = 0.025) and seven nuclear microsatellites ( F ST = 0.004, P < 0.001 D est_Chao = 0.03), despite the species’ 240- to 330-day pelagic larval duration.
#Genodive unable to read population number drivers
We combine kinship estimates with traditional F-statistics to explain contemporary drivers of population genetic differentiation despite high gene flow.
0 kommentar(er)
