MORPHOLOGICAL AND GENETIC-DIFFERENCES IN ECOLOGICALLY DISTINCT POPULATIONS OF PETROSIA (PORIFERA, DEMOSPONGIAE)

被引：22

作者：

BAVESTRELLO, G

SARA, M

机构：

[1] Istituto di Zoologia, Università Genova, S-116126, Via Balbi

来源：

BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY | 1992年 / 47卷 / 01期

关键词：

POLYMORPHISM; MORPHOMETRY; ELECTROPHORESIS; PARASYMPATRIC SPECIATION; MARINE SPONGES; MEDITERRANEAN SEA;

D O I：

10.1111/j.1095-8312.1992.tb00655.x

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The taxonomic status of two sponge tnorphotypes living sympatrically in Mediterranean caves and usually ascribed to Petrosia ficiformis was elucidated on the basis of morphological, morphometric and genetic features. The two morphotypes, spherical and cylindrical, showed differences in the shape and size of spicules and in the morphology of the aquiferous system. Electrophoretic analyses demonstrated that the two morphotypes are reproductively independent and so they should be considered as distinct biological species. The spicular features allow attribution of the cylindrical morphotype to P.ficiformis and the spherical one to P. clavata. For these two species parasympatric speciation is proposed. Copyright © 1992, Wiley Blackwell. All rights reserved

引用

页码：49 / 60

页数：12