Microsatellite variation and microevolution in the critically endangered San Clemente Island loggerhead shrike (Lanius ludovicianus mearnsi)
نویسندگان
چکیده
منابع مشابه
Genetic differences between the endangered San Clemente Island loggerhead shrike Lanius ludovicianus mearnsi and two neighbouring subspecies demonstrated by mtDNA control region and cytochrome b sequence variation
We investigated mtDNA sequence variation in five populations of the loggerhead shrike Lanius ludovicianus, representing four subspecies, including the San Clemente loggerhead shrike L. l. mearnsi, a critically endangered California Channel Island endemic. Variability in 200 bp of control region and 200 bp of cytochrome b was extremely low, and defined four haplotypes. Strong structure was appar...
متن کاملPopulation structure of loggerhead shrikes in the California Channel Islands.
The loggerhead shrike (Lanius ludovicianus), a songbird that hunts like a small raptor, maintains breeding populations on seven of the eight California Channel Islands. One of the two subspecies, L. l. anthonyi, was described as having breeding populations on six of the islands while a second subspecies, L. l. mearnsi, was described as being endemic to San Clemente Island. Previous genetic stud...
متن کاملPolymorphic microsatellite markers in the loggerhead shrike Lanius ludovicianus isolated from a library enriched for CA repeats.
Many species of true shrike (family Laniidae) are in decline world-wide, but the causes of the decline are in most cases poorly understood (Yosef & Lohrer 1995). Populations of at least two subspecies of the North American loggerhead shrike Lanius hfovicianus have suffered severe reductions this century: the San Clemente loggerhead shrike, L. 1. mearnsi, an endangered Californian Channel Island...
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BACKGROUND The Loggerhead Shrike, Eastern subspecies (Lanius ludovicianus ssp.) (LOSH) is a predatory songbird native to Eastern North America. It is estimated that there are fewer than 55 breeding pairs of this subspecies in North America. Captive breeding plays a critical role in preventing the extirpation of this subspecies from its Canadian range. Unfortunately, high numbers of unexplained ...
متن کاملPopulation Size of Island Loggerhead Shrikes on Santa Rosa and Santa Cruz Islands
Island loggerhead shrikes (Lanius ludovicianus anthonyi) are an endemic, genetically distinct subspecies of loggerhead shrike on California’s Santa Rosa, Santa Cruz, and Santa Catalina Islands (USA). This subspecies is listed as a Species of Special Concern by the California Department of Fish and Game and has been petitioned for federal listing under the Endangered Species Act. The combination...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of London. Series B: Biological Sciences
سال: 1997
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rspb.1997.0121