| Autor: |
CABRAL ETEROVICK, PAULA, CÔRTES FIGUEIRA, JOSÉ EUGÊNIO, VASCONCELLOS-NETO, JOÃO |
| Zdroj: |
Biological Journal of the Linnean Society; August 1997, Vol. 61 Issue: 4 p485-499, 15p |
| Abstrakt: |
Cryptic coloration is found in many Orthoptera, especially in Acrididae, showing a great variety of forms. In a grasshopper assemblage in southeastern Brazil, preferences for escape places were detected; grasshoppers tended to escape to backgrounds in which they seem to be more cryptic. Coloration was measured using the Simpson diversity index, to quantify «aspect diversity» (diversity of colours and shapes of patches along the insect's body). A weak positive correlation was found between grasshoppers» aspect diversity and diversification in use of escape places (use of many backgrounds to escape). Grasshoppers with similar colour patterns tended to use the same structures (leaves, sandy soil, stones) to escape. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Plný text