BIOTIC Species Information for Hyale prevostii
Researched byJacqueline Hill Data supplied byMarLIN
Refereed byProf. P. Geoff Moore
Reproduction/Life History
Reproductive typeGonochoristic
Developmental mechanismDirect Development
Reproductive SeasonSee additional information Reproductive LocationAs adult
Reproductive frequencyAnnual protracted Regeneration potential No
Life span1-2 years Age at reproductive maturityInsufficient information
Generation time1-2 years FecundityInsufficient information
Egg/propagule sizeInsufficient information Fertilization typeExternal
Larval/Juvenile dispersal potentialInsufficient information Larval settlement periodNot relevant
Duration of larval stageNot relevant   
Reproduction Preferences Additional Information
  • Timing and length of the reproductive period is influenced by temperature. In the south of its range, on the north coast of Spain, Hyale prevostii breeds year-round (Gonzáles & Anadón, 1981). In cooler waters the reproductive period is reduced, for example, February-November in Scotland (Moore, 1986) and April - October in New England (McBane & Crocker, 1984).
  • Reproduction, and therefore the production of gametes, varies across its range.
  • The mating system is polygynous. Mating is prefaced by a period of precopula (duration c.42h) during which time the male carries the passive female tucked under the ventral surface (Moore, 1986).
  • There is no sperm storage, and fertilisation is external.
  • Amphipods do not have a free swimming larval stage. Embryos are brooded in a marsupium, beneath the thorax, formed by the coxal plates and released as juveniles.
  • Same size females produce fewer eggs both to the far north and far south of their range supporting the hypothesis that optimal conditions exist in the middle of the species' geographical range.
Reproduction References Fish & Fish, 1996, Moore, 1986, Gonzáles & Anadón, 1981, McBane & Crocker, 1984,
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