BIOTIC Species Information for Tenellia adspersa
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| Click here to view the MarLIN Key Information Review for Tenellia adspersa | |||||||||||||||
| Researched by | Nicola White | Data supplied by | MarLIN | ||||||||||||
| Refereed by | Dr Richard S.K. Barnes | ||||||||||||||
| Reproduction/Life History | |||||||||||||||
| Reproductive type | Gonochoristic |
Developmental mechanism | Lecithotrophic Direct Development |
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| Reproductive Season | Insufficient information | Reproductive Location | Insufficient information | ||||||||||||
| Reproductive frequency | Annual protracted | Regeneration potential | No | ||||||||||||
| Life span | <1 year | Age at reproductive maturity | <1 year | ||||||||||||
| Generation time | <1 year | Fecundity | 25 to 50 eggs per spawn | ||||||||||||
| Egg/propagule size | Insufficient information | Fertilization type | Insufficient information | ||||||||||||
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| Reproduction Preferences Additional Information | Tenellia adspersa has a subannual lifecycle with a short generation time of as little as 20 days when reared at 20 degrees C and 30 ppt on the hydroid Cordylophora lacustris. The animals may spawn 3 to 5 times a day with 25 to 50 eggs per spawn (Chester, 1996). The spawn consists of a short, curved, lozenge-shaped mass. The period from spawning to hatching lasts 4-5 days. The method of development varies with the environmental conditions. Metamorphosis normally takes place within the egg capsule, hatching as a juvenile. In animals that have been starved a switch to pelagic non-feeding or planktotrophic development has been observed. | ||||||||||||||
| Reproduction References | Chester, 1996, | ||||||||||||||
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