BIOTIC Species Information for Patella ulyssiponensis
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| Researched by | Ken Neal & Marie Skewes | Data supplied by | MarLIN | ||||||||||||
| Refereed by | This information is not refereed. | ||||||||||||||
| Reproduction/Life History | |||||||||||||||
| Reproductive type | Protandrous hermaphrodite |
Developmental mechanism | Planktotrophic |
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| Reproductive Season | August to October | Reproductive Location | Insufficient information | ||||||||||||
| Reproductive frequency | Annual episodic | Regeneration potential | No | ||||||||||||
| Life span | 11-20 years | Age at reproductive maturity | 3-5 years | ||||||||||||
| Generation time | 3-5 years | Fecundity | Insufficient information | ||||||||||||
| Egg/propagule size | Insufficient information | Fertilization type | Insufficient information | ||||||||||||
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| Reproduction Preferences Additional Information | Maturation of gonads begins in May/June and all mature individuals have ripe gonads by mid-August. Spawning occurs in October and is believed to be triggered by strong gales (Thompson, 1979). The sex ratio of this species varies with size of individual. For example, at 20 mm shell length, all mature individuals are male, while from 20 mm to full size the number of females increases until at 55 mm around 70% of the mature individuals are female (Thompson, 1979). | ||||||||||||||
| Reproduction References | Thompson, 1979, | ||||||||||||||
BIOTIC - Biological Traits Information Catalogue
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