Ecology Summary - Argonauta nouryi

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Ecology of Argonauta nouryi

Main Ref.	Hochberg, F.G. and Y.E. Camacho-García, 2009
Remarks	Pelagic. Mating behavior unknown. On contact with the female, presumably the male autotomizes the hectocotylus. Multiple hectocotyli can persist in the mantle cavities of females for extended periods. Eggs of up to three different developmental stages may be present within a single shell. Large numbers of females have been observed at the surface in open-ocean during daylight hours. Females may attach to each other, forming large chains of up to 18 individuals. Females are known to strand on beaches in the southern Gulf of California, Mexico, during late winter and early spring (January to March) (Ref 96968).

Main Ref.

Hochberg, F.G. and Y.E. Camacho-García, 2009

Remarks

Pelagic. Mating behavior unknown. On contact with the female, presumably the male autotomizes the hectocotylus. Multiple hectocotyli can persist in the mantle cavities of females for extended periods. Eggs of up to three different developmental stages may be present within a single shell. Large numbers of females have been observed at the surface in open-ocean during daylight hours. Females may attach to each other, forming large chains of up to 18 individuals. Females are known to strand on beaches in the southern Gulf of California, Mexico, during late winter and early spring (January to March) (Ref 96968).

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	estuaries/lagoons/brackish seas mangroves marshes/swamps	rivers/streams lakes/ponds caves exclusively in caves

Highighted items on the list are where Argonauta nouryi may be found.

Habitat

Substrate	Pelagic;
Substrate Ref.	Hochberg, F.G. and Y.E. Camacho-García, 2009
Special habitats
Special habitats Ref.

Associations

Ref.
Associations
Associated with
Association remarks
Parasitism

feeding

Feeding type	mainly animals (troph. 2.8 and up)
Feeding type Ref.	Rosa, R. and B.A. Seibel, 2010
Feeding habit
Feeding habit Ref.

Trophic Level(s)

Estimation method	original sample		unfished population		Remark
Estimation method	Troph	s.e.	Troph	s.e.	Remark
From diet composition
From individual food items	3.44	0.44			Trophic level estimated from a number of food items using a randomized resampling routine.
Ref.

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