Argonauta hians
Winged argonaut | |
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Eggcase of Argonauta hians | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Order: | Octopoda |
Family: | Argonautidae |
Genus: | Argonauta Linnaeus, 1758 |
Species: | A. hians
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Binomial name | |
Argonauta hians Lightfoot , 1786 | |
Synonyms | |
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Argonauta hians, also known as the winged argonaut, muddy argonaut or brown paper nautilus, is a
A. hians is cosmopolitan, occurring in tropical and
A. hians feeds primarily on pelagic
Males of this species reach sexual maturity at a mantle length (ML) of about 7 mm, presumably the maximum size attained.[3] Females mature at about half the size of Argonauta argo.[5] They begin to secrete an eggcase at 6.5–7 mm ML.[3] Egg laying usually commences when females reach 14–15 mm ML; by 18–20 mm ML female A. hians have laid their eggs. However, the size at which this takes place differs across the animal's range.[3] Females grow to 50 mm ML, while males do not exceed 20 mm ML.[2]
A. hians is known to cling to objects floating on the surface of the sea, including other argonauts.[3][6] Chains of up to 20-30 argonauts of similar size have been reported.[3] The first female in such chains usually clings to some inanimate object, while the other females hold on to the ventral part of the shell of the preceding animal.[2][3] Gilbert L. Voss and Gordon Williamson observed six freshly mated female A. hians off Hong Kong that were swimming along in a string.[2][6]
In the open ocean, A. hians is often observed attached to jellyfish.[7] It has been photographed atop the jellyfish Phyllorhiza punctata in the Philippines.[8] This behaviour has been known for a long time,[7][9] although little was understood about the relationship prior to the work of Heeger et al. in 1992.[8][10]
Underwater photographer Mark Strickland observed and photographed a female A. hians clinging to a
A. hians appears to be closely related to the smaller
The
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Juvenile female (6.5 mm ML) from the equatorial South Atlantic
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Apparently immature male (5.0 mm ML) from the equatorial South Atlantic
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Oral view of the same animal; note the modified hectocotylus
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Funnel–mantle locking apparatus of juvenile male (5.0 mm ML) from the equatorial South Atlantic
References
- . Retrieved 12 November 2021.
- ^ a b c d e f g h Norman, M. (2000). Cephalopods: A World Guide. ConchBooks. pp. 189–195.
- ^ a b c d e f g Nesis, K. N. (1977). "The biology of paper nautiluses, Argonauta boettgeri and A. hians (Cephalopoda, Octopoda), in the western Pacific and the seas of the East Indian Archipelago". Zoologicheskii Zhurnal. 56: 1004–1014.
- ^ Rancurel, P. (1970). "Les contenus stomacaux d' Alepisaurus ferox dans le sud-ouest Pacifique (Céphalopodes)". Cahiers de l'ORSTOM. Ser. Océanogr. (in French). 8 (4): 4–87.
- ^ Naef, A. (1923). Die Cephalopoden, Systematik. Fauna Flora Golf. Napoli (35) (in German). Vol. 1. pp. 1–863.
- ^ a b Voss, G. L.; G. Williamson (1971). Cephalopods of Hong Kong. Hong Kong: Government Press. p. 138 pp.
- ^ .
- ^ a b Mangold, K. M.; M. Vecchione; R. E. Young. "Argonauta". Tree of Life web project. Retrieved 2006-09-13.
- ^ Kramp, P. L. (1956). "Pelagic Fauna". In A. Bruun; SV. Greve; H. Mielche; R. Spärck (eds.). The Galathea Deep Sea Expedition 1950–1952. pp. 65–86.
- .
- ^
- ^ (in German) Hilber, V. (1915). "Der älteste bekannte und erste miozäne Argonauta" (PDF). Mitteilungen des naturwissenschaftlichen Vereins für Steiermark 51: 107–110.
- ^ (in French) Hoernes, R. & L. Dollo (1886). Octopoda. In: Manuel de Paléontologie. Librairie F. Savy, Paris. pp. 380–381.
- ^ Current Classification of Recent Cephalopoda
- Sweeney, M. J. (2002). Taxa Associated with the Family Argonautidae Tryon, 1879. Tree of Life web project.
- Lu, C. C. "Argonautidae". Australian Biological Resources Study. Retrieved 2006-09-13.[permanent dead link]
External links
- "CephBase: Argonauta hians". Archived from the original on 2005-08-17.
- Tree of Life web project: Argonauta