INTRASPECIFIC MORPHOLOGICAL VARIATION RELATED TO THE MOLT-CYCLE IN COLOR FORMS OF THE SHORE CRAB CARCINUS-MAENAS

被引:56
作者
MCGAW, IJ [1 ]
KAISER, MJ [1 ]
NAYLOR, E [1 ]
HUGHES, RN [1 ]
机构
[1] UNIV WALES,SCH BIOL SCI,FUNCT & EVOLUT BIOL GRP,BANGOR LL57 2UW,GWYNEDD,WALES
关键词
D O I
10.1111/j.1469-7998.1992.tb04614.x
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
The common shore crab Carcinus maenas exhibits a range of carapace colours from green through orange to red, green forms showing some differences of distribution from red/orange forms. To test the hypothesis that colour differences were moult-related, large numbers of Carcinus were collected intertidally and subtidally in summer When moulting is most prevalent, and their moult stages determined. Red and orange coloration was found only to occur in the larger size classes in crabs in prolonged intermoult, but not solely in the largest crabs in terminal anecdysis. Red crabs were characterized by a heavier load of epibionts and a strong, thicker carapace. In contrast, green crabs were found over the entire size range and appeared to be actively moulting forms; they carried fewer epibionts and had a thinner integument than red forms. The significance of morphological differences between red/orange and green forms of Carcinus maenas is considered in relation to previously reported behavioural, physiological and ecological differences between the colour forms.
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页码:351 / 359
页数:9
相关论文
共 14 条
[11]  
MCGAW IJ, 1991, THESIS U WALES
[12]   MOLT CYCLE OF MALE SNOW CRABS, CHIONOECETES-OPILIO, FROM OBSERVATIONS OF EXTERNAL FEATURES, SETAL CHANGES, AND FEEDING-BEHAVIOR [J].
OHALLORAN, MJ ;
ODOR, RK .
JOURNAL OF CRUSTACEAN BIOLOGY, 1988, 8 (02) :164-176
[13]   VARIATIONS IN RESPONSE TO ENVIRONMENTAL HYPOXIA OF DIFFERENT COLOR FORMS OF THE SHORE CRAB, CARCINUS-MAENAS [J].
REID, DG ;
ALDRICH, JC .
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-PHYSIOLOGY, 1989, 92 (04) :535-539
[14]  
REID DG, 1989, PHENOTYPIC RESPONSES