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
Colour variation and crypsis in relation to habitat selection in the males of the crab spider Xysticus sabulosus (Hahn, 1832) (Araneae: Thomisidae)
Bonte, D.; Maelfait, J.-P. (2004). Colour variation and crypsis in relation to habitat selection in the males of the crab spider Xysticus sabulosus (Hahn, 1832) (Araneae: Thomisidae). Belg. J. Zool. 134(2/1): 3-7
In: Belgian Journal of Zoology. Koninklijke Belgische Vereniging voor Dierkunde = Société royale zoologique de Belgique: Gent. ISSN 0777-6276; e-ISSN 2295-0451
|   |
| Beschikbaar in | Auteurs |
|
Documenttype: Congresbijdrage
|
| Trefwoorden |
Behaviour > Searching behaviour > Feeding habits > Foraging
Habitat > Microhabitats
Interspecific relationships > Predation
Topographic features > Beach features > Dunes
Xysticus sabulosus (Hahn, 1832) [WoRMS]
Marien/Kust |
| Auteurs | | Top |
- Bonte, D.
- Maelfait, J.-P.
|
|
|
| Abstract |
The crab spider Xysticus sabulosus (HAHN, 1832) is a sit-and-wait predator, typical for sandy habitats in Europe and Flanders. In the Flemish coastal dunes, the species is very abundant in grey and blond dunes. lts abdominal and cephalothorical colour varies from almost completely white to dark brown. During autumn 2001, we investigated crypsis as a function ofthe occupied micro- and macrohabitat. Our results indicate that (1) Colouration differs between the populations. The species is darker in a grey dune completely covered with dried (brown) mosses and in a humid dune slack covered with algae, than in populations from a sea inlet and from a blond dune. The colouration of a population from a grey dune with mosses, lichens and bare sand is intermediate. (2) Individual cephalothoracal colouration is, in contrast to abdominal colouration, related to microhabitat selection: individuals with darker cephalothoraxes occupy hunting sites with a higher coverage of mosses, while those with a pale one are found in microhabitats with a high amount of nude sand. The observed spider colour-environment covariation between populations is probably the result of natural selection or colour alteration during the juvenile development. Further research on these possible underlying mechanisms remains, however, necessary. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
