科研之友
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摘要
Beginning in 1990 a study area in east Texas was selected for restocking of northern bobwhite. Samples from 2 distinct Subspecies, Colinus virginianus texanus (south Texas) and C. v. mexicanus (east Texas), were introduced to the study area in February of 1990 and 1991. Restriction site variation of mitochondrial DNA (mtDNA) revealed geographic subdivision between the subspecies. Observed frequency differences of mtDNA haplotypes identified for each subspecies were used to assess the relative success of relocated south Texas, east Texas, and resident birds. In 1981 and 1992 samples of unmarked birds (primarily subadults) sere collected subsequent to restocking efforts in 1990-91. Among the 186 birds examined for mtDNA variation, the new birds obtained in 1991-92 genetically were more similar to C. v. mexicanus, the stock obtained from east Texas. These results suggest restocking efforts of bobwhite should involve either local birds or birds from the same subspecies. The management implications of these findings are discussed.
- 出版日期1997-7
