BIOTIC

BIOTIC Species Information for Jassa falcata
All Taxonomy Biology Distribution Reproduction

Researched by	Jacqueline Hill	Data supplied by	MarLIN
Refereed by	Prof. P. Geoff Moore
General Biology
Growth form	Articulate	Feeding method	Predator Active suspension feeder
Mobility/Movement	Swimmer Crawler See additional information Temporary attachment	Environmental position	Epibenthic Epiphytic
Typical food types	Unselective suspension feeder of detritus and small organisms.	Habit	Tubiculous
Bioturbator		Flexibility	High (>45 degrees)
Fragility	Intermediate	Size	Small(1-2cm)
Height	Insufficient information	Growth Rate	0.07 mm/day
Adult dispersal potential	10-100m	Dependency	Independent
Sociability	Gregarious
Toxic/Poisonous?	No
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,