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Hatchetfishes Hold Horizontal Attitudes During Diagonal Descents

Published online by Cambridge University Press:  11 May 2009

John Janssen
Affiliation:
Loyola University, 6525 N. Sheridan, Chicago, Illinois 60625, U.S.A.
G. R. Harbison
Affiliation:
Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, U.S.A.
J. E. Craddock
Affiliation:
Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, U.S.A.

Extract

Based on analysis of videotape records, species of the genus Argyropelecus are capable of swimming diagonally downwards at considerable speeds without altering their body postures. Morphological evidence strongly suggests that they are able to swim diagonally upwards in a similar way. Their distinctive hatchetlike profile presents a streamlined airfoil in both diagonal and horizontal movements, even though the body is not tilted. Modifications of the caudal musculature probably enable all hatchetfishes (including members of the other two genera, Polyipnus and Sternoptyx) to use the tail for propulsion for both diagonal and horizontal movements. The dorsal fin probably aids in diagonally downward movements and the pelvic and anal fins in diagonally upward movements, whilst the pectoral fins serve as stabilizers for these movements, and as an axis of rotation for striking at prey. The seemingly ungainly shape of the hatchetfish is the result of achieving a streamlined, fish-like shape for horizontal and diagonal movements without tilting of the body, presumably in order to maintain an effective camouflage in midwater.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1986

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References

Alexander, R. M., 1965. The lift produced by the heterocercal tail of the Selachii. Journal of Experimental Biology, 43, 131138.CrossRefGoogle Scholar
Alexander, R. M., 1974. Functional Design in Fishes, 3rd ed. London: Hutchinson.Google Scholar
Baguet, F., Piccard, J., Christophe, B. & Marechal, G., 1983. Bioluminescence and luminescent fish in the Strait of Messina from the mesoscaphe ‘Fore’. Marine Biology, 74, 221229.CrossRefGoogle Scholar
Baird, R. C., 1971. The systematics, distribution, and zoogeography of the marine hatchetfishes (family Sternoptychidae). Bulletin of the Museum of Comparative Zoology at Harvard College, 142, 1128.Google Scholar
Beebe, W., 1935. Half Mile Down, second printing. New York: Harcourt, Brace and Company.Google Scholar
Denton, E. J., Gilpin-Brown, J. B. & Wright, P. G., 1972. The angular distribution of the light produced by some mesopelagic fish in relation to their camouflage. Proceedings of the Royal Society (B), 182, 145158.Google Scholar
Denton, E. J. & Nicol, J. A. C., 1965. Reflexion of light by external surfaces of the herring, Clupea harengus. Journal of the Marine Biological Association of the United Kingdom, 45, 711—738.CrossRefGoogle Scholar
Dingerkus, G. & Uhler, L. D., 1977. Enzyme clearing of alcian blue stained whole small vertebrates for demonstration of cartilage. Stain Technology, 52, 229232.CrossRefGoogle ScholarPubMed
Haedrich, R. L., 1964. Food habits and young stages of North Atlantic Alepisaurus (Pisces, Iniomi). Breviora, no. 201, 15 pp.Google Scholar
Haedrich, R. L. & Nielsen, J. G., 1966. Fish eaten by Alepisaurus (Pisces, Iniomi) in the southeastern Pacific Ocean. Deep-Sea Research, 13, 909919.Google Scholar
Herring, P. J., 1977 a. Bioluminescence of marine organisms. Nature, London, 267, 788793.CrossRefGoogle Scholar
HErring, P. J., 1977 b. Oral light organs in Sternoptyx with some observations of bioluminescence in hatchetfishes. In A Voyage of Discovery (ed. Angel, M. V.), pp. 553567. Oxford: Pergamon Press. [Supplement to Deep-Sea Research.]Google Scholar
Herring, P. J., 1982. Aspects of the bioluminescence of fishes. Oceanography and Marine Biology, an Annual Review, 20, 415470.Google Scholar
Hopkins, T. L. & Baird, R. C., 1973. Diet of the hatchetfish Sternoptyx diaphana. Marine Biology, 21, 3446.CrossRefGoogle Scholar
Hopkins, T. L. & Baird, R. C., 1985. Feeding ecology of four hatchetfishes (Sternoptychidae) in the eastern Gulf of Mexico. Bulletin of Marine Science, 36, 260277.Google Scholar
Matthews, F. D., Damkaer, D. M., Knapp, L. W. & Collette, B. B., 1977. Food of western North Atlantic tunas (Thunnus) and lancetfishes (Alepisaurus). National Oceanic and Atmospheric Administration Technical Report NMFS Circular, no. 706, 19 pp.Google Scholar
Pugh, P. R. & Harbison, G. R., 1986. New observations on a rare physonect siphonophore, Lychnagalma utricularia (Claus, 1879). Journal of the Marine Biological Association of the United Kingdom, 66, 695701.CrossRefGoogle Scholar
Robison, B. H. & Craddock, J. E., 1983. Mesopelagic fishes eaten by Fraser's dolphin, Lagenodelphis hosei. Fishery Bulletin, 81, 283289.Google Scholar
Webb, P. W., 1984. Form and function in fish swimming. Scientific American, 251, 7282.CrossRefGoogle Scholar
Weitzman, S. H., 1974. Osteology and evolutionary relationships of the Sternoptychidae, with a new classification of stomiatoid families. Bulletin of the American Museum of Natural History, 153, 327478.Google Scholar
Winterbottom, R., 1974. A descriptive synonymy of the striated muscles of the Teleostei. Proceedings of the Academy of Natural Sciences of Philadelphia, 125, 225317.Google Scholar