Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Chromatic patterns of the hermit crab Calcinus tubularis related to the occupied shell
Pessani, D.; Tirelli, T. (2006). Chromatic patterns of the hermit crab Calcinus tubularis related to the occupied shell, in: Thessalou-Legaki, M. (Ed.) Issues of decapod crustacean biology. Developments in Hydrobiology, 184: pp. 107-112
In: Thessalou-Legaki, M. (Ed.) (2006). Issues of decapod crustacean biology. Developments in Hydrobiology, 184. Springer: Dordrecht. ISBN 978-1-4020-4599-8. 160 pp. https://dx.doi.org/10.1007/1-4020-4756-8
In: Dumont, H.J. (Ed.) Developments in Hydrobiology. Kluwer Academic/Springer: The Hague; London; Boston; Dordrecht. ISSN 0167-8418, meer
|
| Trefwoorden |
Biological phenomena > Adaptations > Camouflage
Marien/Kust |
| Author keywords |
Morphs; Chromatism; Shell preference |
| Abstract |
Crustacea are known to develop different chromatic patterns due to many factors. Regarding decapods, chromatism was mainly studied in crabs, while very little is known about chromatic patterns in hermit crabs. Calcinus tubularis is a typical infralittoral rocky bottom hermit crab, studied for different aspects of its biology except chromatic variations. This paper aims at describing the different colour morphologies of C. tubularis, discussing hypothesis of why they develop, and testing if in nature the crab prefers a shell with a chromatic pattern similar to that of its body. One hundred and forty crabs were observed and filmed in the laboratory. They were subdivided into two groups, according to their chromatic pattern: 1) light and 2) dark crabs; the shells they occupied were also subdivided into the two groups of 1) light and 2) dark shells on the basis of the epibionts encrusting them. Observations of 129 crabs suggest that the colour depends neither on depth nor on size, intermoult period, diet, reproductive period but it might be connected to genetic factors and might help crab to camouflage. Camouflage is suggested by the fact that 79.3% of the total examined specimens occupy shells with a chromatic pattern resembling that of the crabs themselves. This phenomenon is significantly more recurrent in females than in males and could help the crabs to be cryptic, first with the occupied shell and secondly with the habitat (rocks encrusted by photophylous algae). |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
