BIOTIC Species Information for Jassa falcata
Researched byJacqueline Hill Data supplied byMarLIN
Refereed byProf. P. Geoff Moore
General Biology
Growth formArticulate
Feeding methodPredator
Active suspension feeder
See additional information
Temporary attachment
Environmental positionEpibenthic
Typical food typesUnselective suspension feeder of detritus and small organisms. HabitTubiculous
Bioturbator FlexibilityHigh (>45 degrees)
FragilityIntermediate SizeSmall(1-2cm)
HeightInsufficient information Growth Rate0.07 mm/day
Adult dispersal potential10-100m DependencyIndependent
General Biology Additional Information
  • Jassa falcata builds tubes, from debris, among algae and hydroids, and on solid surfaces and structures. Males and females live in separate tubes constructed of pieces of debris cemented together, the tubes often forming dense mats.
  • This species is essentially a benthic tube dwelling amphipod although intermittent swimming and crawling is common.
  • Jassa falcata is generally a suspension feeder, however, large specimens have also been seen to capture and feed upon other smaller amphipods and ostracods to supplement their diet.
  • Growth rate is given as maximum growth rate observed in laboratory investigations at varying temperatures. Maximum growth took place at 20 °C (Nair & Anger, 1979).
Biology References Hayward & Ryland, 1995b, Fish & Fish, 1996, Baardseth, 1970, Nair & Anger, 1979, Conlan, 1990,
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