MORPHOMETRIC ANALYSIS OF INTERSPECIFIC AND MICROGEOGRAPHIC VARIATION OF CRAYFISH FROM A MEXICAN CAVE

被引：14

作者：

ALLEGRUCCI, G ^{[1
]}

BALDARI, F ^{[1
]}

CESARONI, D ^{[1
]}

THORPE, RS ^{[1
]}

SBORDONI, V ^{[1
]}

机构：

[1] UNIV ABERDEEN,DEPT ZOOL,ABERDEEN AB9 2TN,SCOTLAND

来源：

BIOLOGICAL JOURNAL OF THE LINNEAN SOCIETY | 1992年 / 47卷 / 04期

关键词：

SPECIATION; CAVE POPULATION; MULTIVARIATE MORPHOMETRY; MICROGEOGRAPHIC VARIATION; PROCAMBARUS;

D O I：

10.1111/j.1095-8312.1992.tb00679.x

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Two undescribed species of Procambarus crayfish (Crustacea, Decapoda) inhabit the subterranean stream running in the recently explored Cueva de Los Camarones, Chiapas, Mexico. Individuals ranging from dark, robust, large‐eyed forms with an epigean mien to pale, comparatively slender, microphthalmic ones resembling related troglobites were found, but only the extremes could be distinguished visually. Evolutionary relationships among individuals were investigated morphometrically by means of multivariate analysis'on 14 body dimensions. These analyses revealed a significant discontinuity between the two species, mainly determined by the shape of the rostrum, chelae and telson. The occurrence of a few aberrant phenotypes may indicate the existence of some gene flow between the two species. Microgeographic variation was demonstrated within the less cavernicolous species. The characters involved were the same as those that discriminate between the two species. These results are compared with allozymic data presented in a parallel paper and the role of genie introgression and environmental induction are discussed. Copyright © 1992, Wiley Blackwell. All rights reserved

引用

页码：455 / 468

页数：14

共 44 条

[1]

ALLEGRUCCI G, 1981, B ZOOL, V48, P12

[2] STATISTICAL PROPERTIES OF RATIOS .1. EMPIRICAL RESULTS [J].