| | 1 | Author
| Karl-Heinz Tomaschko | Requires cookie* | | | Title
| Defensive Secretion of Ecdysteroids in Pycnogonum litorale (Arthropoda, Pantopoda)  | | | | Abstract
| In response to disturbance, the pycnogonid Pycnogonum litorale discharges a mixture o f eight ecdysteroids (ES). Repeated intensive m olestation causes 99% secretion o f the endogenous ES present. The concentration o f the total ES in the defensive effluent is 1.0 x 10" 3 m o lT '1. 20-Hydroxyecdysone 22-acetate, the predominant ES, reaches 0.8 x 10" 3 m ol T_1. This is sufficient to deter significantly feeding by the com m on shore crab Carcinus maenas, a generalist predator in the habitat o f the pycnogonid. There is evidence that the secreted ES o f P. litorale contribute to its unpalatability. The present paper describes for the first time defensive secretion in marine arthropods. | | | |
Reference
| Z. Naturforsch. 49c, 367—371 (1994); received February 10 1994 | | | |
Published
| 1994 | | | |
Keywords
| Pycnogonids, Pycnogonum litorale, Ecdysteroids, Defensive Secretion, Chemical Defense | | | |
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| default:Reihe_C/49/ZNC-1994-49c-0367.pdf | | | | Identifier
| ZNC-1994-49c-0367 | | | | Volume
| 49 | |
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