BIOTIC Species Information for Pasiphaea spp.
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| Researched by | Sean Lindsley-Leake | Data supplied by | MarLIN | ||||||||||||
| Refereed by | This information is not refereed | ||||||||||||||
| Taxonomy | |||||||||||||||
| Scientific name | Pasiphaea spp. | Common name | A glass shrimp | ||||||||||||
| MCS Code | S1306 | Recent Synonyms | |||||||||||||
| Phylum | Crustacea | Subphylum | |||||||||||||
| Superclass | Class | Eumalacostraca | |||||||||||||
| Subclass | Eucarida | Order | Decapoda | ||||||||||||
| Suborder | Pleocyemata | Family | Pasiphaeidae | ||||||||||||
| Genus | Pasiphaea | Species | |||||||||||||
| Subspecies | |||||||||||||||
| Additional Information | |||||||||||||||
| Taxonomy References | |||||||||||||||
| General Biology | |||||||||||||||
| Growth form | Feeding method | ||||||||||||||
| Mobility/Movement | Swimmer Crawler Temporary attachment |
Environmental position | |||||||||||||
| Typical food types | Habit | Free living | |||||||||||||
| Bioturbator | Flexibility | Low (10-45 degrees) | |||||||||||||
| Fragility | Fragile | Size | Small-medium(3-10cm) | ||||||||||||
| Height | Growth Rate | ||||||||||||||
| Adult dispersal potential | Dependency | Independent | |||||||||||||
| Sociability | Gregarious | ||||||||||||||
| Toxic/Poisonous? | No | ||||||||||||||
| General Biology Additional Information | |||||||||||||||
| Biology References | Company et al., 2001, | ||||||||||||||
| Distribution and Habitat | |||||||||||||||
| Distribution in Britain & Ireland | |||||||||||||||
| Global distribution | |||||||||||||||
| Biogeographic range | Depth range | ||||||||||||||
| Migratory | |||||||||||||||
| Distribution Additional Information | |||||||||||||||
| Substratum preferences | Physiographic preferences | ||||||||||||||
| Biological zone | Wave exposure | ||||||||||||||
| Tidal stream strength/Water flow | Salinity | ||||||||||||||
| Habitat Preferences Additional Information | |||||||||||||||
| Distribution References | Ramirez-Llodra et al., 2007, | ||||||||||||||
| Reproduction/Life History | |||||||||||||||
| Reproductive type | Gonochoristic |
Developmental mechanism | Lecithotrophic Planktotrophic |
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| Reproductive Season | See additional information | Reproductive Location | As adult | ||||||||||||
| Reproductive frequency | See additional information | Regeneration potential | No | ||||||||||||
| Life span | Insufficient information | Age at reproductive maturity | Insufficient information | ||||||||||||
| Generation time | Insufficient information | Fecundity | 12-49 | ||||||||||||
| Egg/propagule size | 1.5mm | Fertilization type | Internal | ||||||||||||
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| Reproduction Preferences Additional Information | Reproductive season and frequency are both dependant on species, and geographical location of species:continuous in P.sivado in the Med, seasonal in the Irish Sea; sept-march in P.multidentata. Fecundity is also highly dependant on species, with geographical variation within species. The oogenetic pattern of P.sivado is typical of a caridean shrimp. There is a pool of previtellogenic oocytes at all times that develop from the periphery of the gonad towards the centre during maturation. Previtellogenic oocytes grow to approximately 200 µm before undergoing vitellogenesis. The vitellogenic oocytes are surrounded by a monolayer of accessory cells. The maximum size observed for a mature oocyte is 1420 µm. The oocyte-size distribution confirms the seasonal reproductive pattern of this species; in winter, the ovaries contained mainly previtellogenic oocytes, some of which start maturing in spring, resulting in a slightly bimodal distribution. In summer, the vitellogenic oocytes reach approximately 1000 µm and in late autumn the ovaries are fully mature and ready to spawn.large size of mature vitellogenic oocytes (~1400 µm) corresponds to the egg size (1870 µm in length) previously reported from ovigerous females (Company et al. 2001). This egg size is indicative of lecithotrophic larval development with a reduction in the number of larval stages . Abbreviated larval development provides a higher larval survival probability, and is typical of deep-sea caridean shrimps. | ||||||||||||||
| Reproduction References | Company et al., 2001, Williamson, 1960, Ramirez-Llodra et al., 2007, | ||||||||||||||
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