Synopsis
Baikal sculpin-oilfishes (Comephorus baicalensis and C. dybowskii) were captured from Lake Baikal by mid-water trawl. External morphology was assessed using camera lucida drawings of whole heads. Retinal morphology was examined in material prepared for light and electron microscopy. A single rod-like photoreceptor is present in the retina, and this is at low density compared with marine species of similar depth distribution. C. baicalensis displays tubular eyes, with a dorsally displaced spherical lens and pupil, creating a dorsally directed visual axis. This corresponds to an area with a high density of photoreceptors in the ventral retina. Retinal structure is very similar in C. dybowskii with the exception that regional variation of cell densities within the retina is less marked than in C. baicalensis. In contrast to C. baicalensis, C. dybowskii has a caudal aphakic space and highest photoreceptor density in the rostral retina. Both species display changes in body attitude in association with diurnal vertical migration. We suggest that this may facilitate inspection of the water column from which predator strikes are most likely to occur. Comephorus in general display less specialization for vision in low light than marine counterparts with similar depth distributions.
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References cited
Barham, E.G. 1971. Deep sea fishes: lethargy and vertical orientation. pp. 100–118. In: G.B. Farquhar(ed.) Proceedings of an International Symposium on Biological Sound Scattering in the Ocean, US Government Printing Office, Washington, D.C.
Eastman, J.T. 1988 Ocular morphology in Antarctic notothenioid fishes: J. Morph. 196: 283–306.
Galaziy, G.I. 1984. Baikal in questions and answers. East Siberian Publishing House, Irkutsk. 365 pp. (In Russian).
Hobson, E.S. 1966. Visual orientation and feeding in sea lions. Nature 210: 326–327.
Janssen, J., S. Coombs, J. Montgomery & V. Sideleva. 1990. Comparisons in the use of the lateral line for detecting prey by Notothenioids and sculpins. Ant. J. U.S. 15: 214–215.
Janssen, J., N.W. Pankhurst & G.R. Harbison. 1992. Swimming and body orientation of Notolepis rissoi in relation to lateral line and visual function. J. Mar. Biol. Ass. U.K. 72: 877–886.
Kozhova O.M., G.N. Sidelev & N.S. Rezinkov. 1979. Observations of planktonic and nektobenthic aggregations. pp. 87–91. In: A.S. Monin(ed.) Geological Geophysical and Submarine Investigation of Lake Baikal, Nauka Press, Moscow. (In Russian).
Locket, N.A. 1971. Retinal anatomy in some scopelarchid deepsea fishes. Proc. Roy. Soc. Lond. B 178: 161–184.
Locket, N.A. 1977. Adaptations to the deep-sea environment. pp. 67–192. In: F. Crescitelli (ed.) The Visual System in Vertebrates, Handbook of Sensory Physiology , Springer-Verlag, Berlin.
Locket, N.A. 1980. Variation of architecture with size in the multiple-bank retina of a deep sea teleost, Chauliodus sloani. Proc. Roy. Soc. Lond. B 208: 223–242.
Lut, B.F. 1964. Morphology and morphometry of the basin of Lake Baikal. pp. 5–123. In: G.I. Galaziy(ed.) Ways of Knowledge of Lake Baikal, Nauka Press, Moscow. (In Russian).
Lythgoe, J.N. 1979. The ecology of vision. Clarendon Press, Oxford. 244 pp.
Marshall, N.B. 1971. Explorations in the life of fishes. Harvard University Press, Cambridge. 204 pp.
Montgomery, J.C. & J.A. Macdonald. 1987. Sensory tuning of lateral line receptors in Antarctic fish to the movements of planktonic prey. Science 235: 195.
Munk, O. 1966. Ocular anatomy of some deep-sea teleosts. Dana Rep. 70: 1–71.
Nagorny, V.K., I.B. Wolerman, V.G. Sideleva, S.N. Kostornov & T.Y. Zavjalova. 1984. State of oilfish and sculpin stock and their consumption by omul. pp. 72–79. In: D.S. Norenko(ed.) Problems of Fish Industry Development in the Lake Baikal Basin, Hydrometerology Publishing, Leningrad. (In Russian).
Pankhurst, N.W. 1987. Intra- and interspecific changes in retinal morphology among mesopelagic and demersal teleosts from the slope waters of New Zealand. Env. Biol. Fish. 19: 269–280.
Pankhurst, N.W. 1989. The relationship of ocular morphology to feeding modes and activity periods in shallow marine teleosts from New Zealand. Env. Biol. Fish. 26: 201–211.
Pankhurst, N.W. & J.C. Montgomery. 1989. Visual function in four Antarctic nototheniid fishes. J. Exp. Biol. 142: 311–324.
Partridge, J.C., S.N. Archer & J.N. Lythgoe. 1988. Visual pigments in the individual rods of deep-sea fishes. J. Comp. Physiol. A 162: 543–550.
Pastukhov, V.D. 1987. The Baikal seal. pp. 258–265. In: G.I. Galaziy(ed.) Way of Knowledge of Lake Baikal, Nauka Press, Novosibirsk. (In Russian).
Pastukhov, V.D. & L.A. Gurova. 1974. The diet and food interrelationships of pelagic fishes and seals in Baikal. Nauka Press, Novosibirsk. 180 pp. (In Russian).
Podrazhanski, A.M. 1982. Observations of the bottom of Baikal. Hydrometerology Publishing, Leningrad. 150 pp. (In Russian).
Pumphrey, R.J. 1961. Concerning vision. pp. 193–208. In: J.A. Ramsay & V.B. Wigglesworth(ed.) The Cell and Organism, Cambridge University Press, Cambridge.
Sadler, J.D. 1973. The focal length of the fish eye lens and visual acuity. Vision Res 13: 417–423.
Sherstyankin, P.P. 1975. Experimental investigation of the underice light field of Lake Baikal. Nauka Press, Moscow. 95 pp. (In Russian).
Sideleva, V.G. 1980. Structural features of the seismosensory system of freshwater sculpins and Baikal oilfishes (Cottidae and Comephoridae) in connection with a pelagic mode of life. J. Ichthyol. 20: 119–125.
Sivak, J.G. 1982. Optical characteristics of the eye of the flounder. J. Comp. Physiol. 146: 345–350.
Starikov, G.V. 1977. Oilfishes of Baikal. Nauka Press, Novosibirsk. 95 pp. (In Russian).
Wolerman, I.B. & V.V. Kontorin. 1983. Biological association of fishes and seals in Baikal. Nauka Press, Novosibirsk. 248 pp. (In Russian).
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Pankhurst, N.W., Sideleva, V.G., Pankhurst, P.M. et al. Ocular morphology of the Baikal sculpin-oilfishes, Comephorus baicalensis and C. dybowskii (Comephoridae). Environ Biol Fish 39, 51–58 (1994). https://doi.org/10.1007/BF00004756
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DOI: https://doi.org/10.1007/BF00004756