Nematocysts of the Mediterranean hydroid Halocordyle disticha |
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| Authors: | Östman C Piraino S Kem W |
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| Institution: | (1) Department of Zoology, Uppsala University, Box 561, S-751 22 Uppsala, Sweden;(2) Istituto Sperimentale Talassografico C.N.R., via Roma 3, 74100 Taranto, Italy;(3) Department of Pharmacology and Therapeutics, University of Florida, 32610 Gainesville, Florida, USA |
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| Abstract: | The morphology, distribution and function of nematocysts in the hydroid Halocordyle disticha were studied by light and scanning electron microscopy. Two types of stenoteles, two types of microbasic b-mastigophores (one with a capsular inclusion) and one type of desmoneme were identified. Prey-capturing experiments were performed with Artemia sp. nauplii. Stenoteles and microbasic mastigophores (those with inclusions) penetrated and paralyzed Artemia larvae, whereas desmonemes kept them in a firm grip by winding around setae. |
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| Keywords: | hydroid SEM nematocysts stenoteles desmonemes |
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