Red kite (Milvus milvus) and black kite (M. migrans): minute genetic interspecies distance of two raptors breeding in a mixed community (Falconiformes: Accipitridae)

Publication Type:Journal Article
Year of Publication:2000
Authors:Schreiber, A, Stubbe, M, Stubbe, A
Journal:Biological Journal of the Linnean Society
Date Published:2000
ISBN Number:1095-8312
Keywords:Accipitridae, allozymes, Milvus, Milvus migrans, Milvus milvus, population genetics, reproductive isolation, speciation
Abstract:Allozyme analysis of 24 loci in 154 red kites (Milvus milvus) and 36 black kites (Milvus migrans) from die Hakel forest (Sachsen-Anhalt, Germany) revealed a Nei's interspecies genetic distance of D = 0.009. Of die observed genetic variance of four polymorphic enzymes, 15.4% referred to die differentiation between die kite species, but 84.6% were contributed by the ingroup polymorphism widiin diese species. Allozymes permit the identification of some 78% of samples as orignating from M. milvus, but only of 5.4% of samples obtained from M. migrans. Akhough the genetic distance is slight, die Milvus kites are valid biospecies which, despite occasional instances of hybridization, coexist sympatrically and may breed in mixed breeding aggregations. Mate choice in die largely separate winter quarters of diese migratory birds or chromosomal incompatibility are hypodietical isolation mechanisms stabilizing die species boundary. Moreover, the range sympatry could have developed fairly recendy widi die spread of human agriculture.
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith