Ecology of Rossia macrosoma
 
Main Ref. Jereb, P. and C.F.E. Roper (eds.), 2005
distribution
Marine - Neritic
  • supra-littoral zone
  • littoral zone
  • sublittoral zone
Marine - Oceanic
  • epipelagic
  • mesopelagic
  • epipelagic
  • abyssopelagic
  • hadopelagic
Brackishwater
  • estuaries/lagoons/brackish seas
  • mangroves
  • marshes/swamps
Freshwater
  • rivers/streams
  • lakes/ponds
  • caves
  • exclusively in caves
Highighted items on the list are where Rossia macrosoma may be found.
Remarks Hyperbenthic (Ref. 106087). Found over sandy-muddy areas offshore from 32 to 899 m depth. In the western Mediterranean, observed to prefer deeper waters in winter and in shallower coastal waters during spawning and throughout the rest of the year. Polytelic. Spawning takes place throughout the year, peaking in spring and autumn. Mating behavior involves the male grasping the female's 'neck' region followed by the insertion of its hectocotylus into the female's mantle cavity. Eggs are laid in small clusters of 30 to 40, covered with a hard, violet-red coat; commonly found on bivalve shells of Pinna sp. Or on other solid substrates. Eggs hatch after 45 days in water temperature of about 16°C. Females mature at 8 to 11 months and are larger than males that mature at 7 to 8 months. Longevity is approximately 12 months. Of minor commercial importance, mostly as bycatch in bottom trawls, although generally never abundant. Among countries in the Mediterranean, it is variedly valued for its tasty meat and sold fresh or frozen in fish markets (Ref. 1695).

Substrate

Substrate Benthic: mobile; demersal; Soft Bottom: sand; mud;
Substrate Ref. Jereb, P. and C.F.E. Roper (eds.), 2005
Special habitats Beds: bivalve;
Special habitats Ref. Jereb, P. and C.F.E. Roper (eds.), 2005

associations

Ref. Jereb, P. and C.F.E. Roper (eds.), 2005
associations commensalism;
Associated with Pinna sp.
Association remarks Eggs are deposited on bivalve shells (Ref. 1695).
Parasitism

feeding

feeding type mainly animals (troph. 2.8 and up)
feeding type ref Rosa, R., J. Pereira, P.R. Costa and M.L. Nunes, 2006
feeding habit hunting macrofauna (predator)
feeding habit ref Rosa, R., J. Pereira, P.R. Costa and M.L. Nunes, 2006
trophic level(s)
original sample unfished population Remark
estimation method Troph s.e. Troph s.e.
From diet composition
Ref.
From individual food items 4.04 0.53 Trophic level estimated from a number of food items using a randomized resampling routine.
(e.g. 9948)
(e.g. cnidaria)
Entered by Pan-Saniano, Marianne on 03.31.06
Modified by Polido, Rubyann Robelle on 05.25.18
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