TY - JOUR A1 - Schwenk, Klaus A1 - Brede, Nora A1 - Streit, Bruno T1 - Introduction : extent, processes and evolutionary impact of interspecific hybridization in animals T2 - Philosophical transactions of the Royal Society of London. Series B, Biological sciences N2 - Since the time of Charles Darwin, studies of interspecific hybridization have been a major focus for evolutionary biologists. Although this phenomenon has often been viewed as problematic in the fields of ecology, taxonomy and systematics, it has become a primary source of data for studies on speciation and adaptation. Effects from genetic/evolutionary processes, such as recombination and natural selection, usually develop over extended periods of time; however, they are accelerated in cases of hybridization. Interspecific hybrids exhibit novel genomes that are exposed to natural selection, thus providing a key to unravel the ultimate causes of adaptation and speciation. Here we provide firstly a historic perspective of hybridization research, secondly a novel attempt to assess the extent of hybridization among animals and thirdly an overview of the reviews and case studies presented in this theme issue. KW - animal hybridization KW - introgression KW - literature review Y1 - 2008 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/6016 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30-60291 SN - 1471-2970 SN - 0080-4622 SN - 0264-3839 SN - 0264-3960 N1 - This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. VL - 363 IS - 1505 SP - 2805 EP - 2811 PB - Royal Society CY - London ER -