STRUCTURE AND DYNAMICS OF A NARROW HYBRID ZONE BETWEEN GEOCRINIA-LAEVIS AND GEOCRINIA-VICTORIANA (ANURA, LEPTODACTYLIDAE) IN SOUTHEASTERN AUSTRALIA
STRUCTURE AND DYNAMICS OF A NARROW HYBRID ZONE BETWEEN GEOCRINIA-LAEVIS AND GEOCRINIA-VICTORIANA (ANURA, LEPTODACTYLIDAE) IN SOUTHEASTERN AUSTRALIA
复制标题
DOI:
10.1038/hdy.1979.72
复制
发表时间:
1979-01-01
期刊:
影响因子:
3.8
通讯作者:
WATSON, GF
中科院分区:
文献类型:
--
作者:
GARTSIDE, DF;LITTLEJOHN, MJ;WATSON, GF
A transect was established across the hybrid zone between G. laevis and G. victoriana near its southern (coastal) limit. The breeding-call structure and 2 muscle protein systems were used to analyze the interaction between these parapatric, morphologically-similar species. The zone, based on breeding-call structure, is narrow (9-30 km), with most of the replacement occurring over 2 km. Contact samples consist of putative parental individuals and recombination products, so that this section of the zone may be described as an overlap with hybridization. This contrasts with an earlier analysis of a transect near the northern (inland) limit of the zone, where there is a narrow integradation with hybrids predominating in the replacement populations. In the southern transect, the 2 muscle protein systems have much broader zones of replacement than that for breeding calls (minimum widths of 33 and 72 km). The muscle protein zones are in different geographic positions from each other, and there is little overlap with the zone based on breeding calls. The patterns of replacement of the 3 characters in these species appear to be independent of one another, and emphasize the complex nature of hybrid zones.