Ecology Summary - Macrourus berglax

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Referencia principal	Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990
Observaciones	Epibenthic, in deep waters down to 2740 m (Ref. 58426). Commonly found in about 300-500 m depth. Temperature preferences appear to range from about 1-4°C, although bottom temperatures below 0°C have been recorded at capture depths. Amphipods predominate in the diet, although polychaetes and various natant crustaceans are also important. Also feeds on bivalves, isopods, echinoderms (notably ophiuroids), and ctenophores (Ref. 1371). Consumed primarily benthic organisms (Ref. 51343). Parasites of the species include 3 myxosporidians, 1 monogenean (Macruricotyle newfoundlandiae), 3 cestodes, 6 trematodes, 4 nematodes, 1 acanthocephalan, 2 protozoans (Glugea berglax and Eimeria sp.), copepod (Sphyrion lumpi) and 3 crustaceans; Davisia newfoundlandia, Zschokkella kudoi, Cyclocotyloides pinguis and Clavellomimus macruri being specific to roughhead grenadier (Ref. 5951).

Referencia principal

Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990

Observaciones

Epibenthic, in deep waters down to 2740 m (Ref. 58426). Commonly found in about 300-500 m depth. Temperature preferences appear to range from about 1-4°C, although bottom temperatures below 0°C have been recorded at capture depths. Amphipods predominate in the diet, although polychaetes and various natant crustaceans are also important. Also feeds on bivalves, isopods, echinoderms (notably ophiuroids), and ctenophores (Ref. 1371). Consumed primarily benthic organisms (Ref. 51343). Parasites of the species include 3 myxosporidians, 1 monogenean (Macruricotyle newfoundlandiae), 3 cestodes, 6 trematodes, 4 nematodes, 1 acanthocephalan, 2 protozoans (Glugea berglax and Eimeria sp.), copepod (Sphyrion lumpi) and 3 crustaceans; Davisia newfoundlandia, Zschokkella kudoi, Cyclocotyloides pinguis and Clavellomimus macruri being specific to roughhead grenadier (Ref. 5951).

Aquatic zones / Water bodies

	Marine - Neritic	Marine - Oceanic	Brackishwater	Freshwater
Marine zones / Brackish and freshwater bodies	supra-littoral zone littoral zone sublittoral zone	epipelagic mesopelagic epipelagic abyssopelagic hadopelagic	Estuarios/lagunas/mares salobres mangroves marshes/swamps	rivers/streams lakes/ponds Cuevas exclusivamente

Highighted items on the list are where Macrourus berglax may be found.

Habitat

Substrate	Benthic;
Substrate Ref.	Coad, B.W. and J.D. Reist, 2004
Special habitats
Special habitats Ref.

Associations

Referencia	Wayland, M.T., C. Sommerville and D.I. Gibson, 1999
Associations	parasitism; shoaling;
Associated with	Echinorhynchus gadi; Echinorhynchus sp. (Ref. 65465);
Association remarks	Study concluding this species form spawning populations with a predominance of males at 700-800 m depth on the Atlantic Tren and Rest Banks during winter-spring. Also reported large catches by bottom trawl and long-line near Iceland and in the NW Atlantic (Ref. 33722).
Parasitism

Alimentación

Tipo De Alimentación	mainly animals (troph. 2.8 and up)
Feeding type Ref.	Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990
Hábito De Alimentación	hunting macrofauna (predator)
Feeding habit Ref.

Trophic Level(s)

Estimation method	Muestra original		Población no pescada		Observación
Estimation method	Troph	s.e.	Troph	s.e.	Observación
De la composición de la dieta			4.48	0.77
De tipos individuales de alimento	3.77	0.49			Trophic level estimated from a number of food items using a randomized resampling routine.
Referencia	Bjelland, O., O.A. Bergstad, J.E. Skjæraasen and K. Meland, 2000

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Aquatic zones / Water bodies

Habitat

Associations

Alimentación