ISSN : 1225-3480
Gametogenesis, mating behaviour, spawning behaviour, and estimated longevity of Octopus ocellatus were investigated by histological study. This species is dioecious, and showed a protandry phenomenon. Ooogenesis (in females) and spermatogenesis (in males) can be classified into 3 stages, respectively. O. ocellatus copulates in one of two ways: a male may leap upon a female, mounting her mantle, or a male may sit near the female and extend the hectocotylized third right arm toward her. Spawning occurred between April and June in females, and between March and May in males of O. ocellatus. The spawning period was once a year and the peak took place between May and June. A number of flatened follicle cells, which were attached to an oocyte, were involved in vitellogenesis in the cytoplasm of the vitellogenic oocyte (maturing oocyte), and formation of chorion membrane (secondary egg membrane) of the ovarian eggs. Fecundity per female closely related to GSI was 294-660 eggs (average, 429 eggs). The díameters of the ovarían eggs surrounded by chorion membrane were approximately ín the range of 10.10-2.50 mm. Each ovarian egg laid by a female was connected to an egg string. Each egg string was 1-5.5 cm (average 3.6 cm). The total number of eggs laid by a female of this species ranged 218-314, the egg sizes were independent to the size of female adult. this species has a life mode showing some special reproductive characteristics of an annual semelparity as shown in Octopodidae species because we have never seen a female spawning a second time.
Andrews. P.L.R., Tansey, E.M. (1983) The digestive tract of Octopus vulgaris: The anatomy. physiology, pharmacology of the upper tract. Marine Biology, 63: 109-134.
Aronson, R.B., (1991) Ecology paleobiology, evolutionary constraint in the Octopus. Bullletin of Marine Science, 49: 245-255.
Bairati, A., Comazzi, M., Gioria, M. (1995) A comparative microscopic, ultrastructural study of perichondrial tissue in cartilage of Octopus vulgaris (Cephalopoda, Mollusca). Tissue, Cell, 27:515-523.
Bast, R.E., Telfer, W.H. (1976) Follicle cell protein synthesis, its contribution to the yolk of thc cecropia moth oocyte. Developmental Biology, 52:83-97.
Bottke. W. (1974) The fine structure of the ovarian follicle of Alloteuthis subulata Lam. (Mollusca. Cephalopoda). Cell Tissue Research, 150: 463-479.
Boyle, P.R., Knobloch, D. (1982) On growth of the Octopus Eledone cirrhosa. Journal of Marine Biological Association U.K, 62: 277-296.
Boyle, P.R., Knobloch, D. (1983) The female reporductive cycle of the Octopus Eledane cirrhosa. Journal of Marine Biological Association, U.K., 63:71-83.
Buckley, S.K.L.(1976) Oogenesis, it's hormonal control in Octopus vulgaris. Ph.D. Thesis, University of Cambridge, U.K.
Che, Y.J., Ueng, Y.E., Chow, C.J. (1992)Comparative study on the characteristics of cephaloped mantle muscle for surimibased products processing. Journal of Fisheries Society, Taiwan, 19:75-82.
Chu. C., Kim, S.G. (1990) Studies on the development of Techniques on seedling production of Octopus vulgaris. National Fisheries Research, Development Institute, 86: 92-97 (in Korean).
Cortez, T.B., Castro, G., Guerra, A. (1995)Reproduction, condition of female Octopus mimus (Mollusca : cephalopoda). Marine Biology, 123:505-510.
Forsythe, J.W., Hanlon, R.T. (1988) Effect of temperature onlaboratory growth, reproduction, life span of Octopus bimaculoides. Marine Biology, 98: 369-379.
Froesch, D., Marthy, H.J. (1975) The structure, function of the oviducal gland in octopods (Cephalopoda). Proceedings of the Royal Society of London B, 188: 95-101.
Gabe, S. (1975) Reproduction in giant octopus of the North Pacific, Octopus dofleini martini, Veliger, 18:146-150.
Galangau, V., Tuzet, O. (1968a) L'acrosome d'Octopus vulgaris L. Observations au microscope electronique. C.R. Academy Science Paris, 267:1462-1464.
Galangau, V., Tuzet, O. (1968b) Les mitochondries pendant la spermatogenese d'Octopusvulgaris L. C.r. Academy Science Paris, 267: 1735-1737.,.
Hanlon, R.T., Messenger, J.B. (1996) Ceephalopod behaviour. Cambridge University Press, 232 pp.
Huebner, E., Tobe, S.S., Davey. K.G. (1975)Structural, functional dynamics of oogenesis in Glossina austeni : Vitellogenesis with special reference to the follicular epithelium. Tissue, Cell, 7: 535-558.
Kim, B.G., Kim, S.W. Jun, C.H. Kim, Kim, J.S. (1997) Studies on the development of Techniques on seedling production of Octopus ocellatus. West Sea Fisheries Research Institute, National Fisheries Research, Development Institute, 297-304.
Lee, B.D. (1956) The catalogue of molluscan shells of Korea. BuIIetin of Pusun Fisheries ColIedge, 1: 1-48.
Mangold, K. (1990) Octopus vulgaris, In: Cephalopod Life Cycle l. Ed. by Boyle, P.R. 21: 335-364.
Mcquaid, C.D., (1994) Feeding behaviour, selection of bivalve prey by Octopus vulgaris cuper. J. Exp. Mar. Biol. Ecol., 177: 187-202.
Min, D.K., Lee, J.S., Ko, D.B., Je, J.G. (2004)Mollusks in Korea. Hanguel Graphics, 566 pp.
Moltschaniwskyj, N.A., Doherty, P.J. (1995)Cross-shelf distribution patterns of tropical juvenile cephalopods sampled with light-traps. Marine, Freshwater Research, 46: 707-714.
Nixon, M., Mangold, K. (1996) The early life of Octopus vulgaris (Cephalopoda: Octopodidae) in the plankton, at settlement : A change in life style. Journal of Z00logy, 239: 301-327.
Perez, J.A.A., Haimovici, M. (1991) Sexual maturation, reproductive cycle of Eledone massyae, voss 1964 (Cephalopoda : Octopodidae) in Southem Brazil. Bulletin of Marine Science, 49:270-279.
Richard, A. (1970) Analyse du cycle sexuel chez les Cephalopodes: Mise en evidence experimentale d’une rythme conditionnee par les variations des facteurs externes et intenes. Bulletin of Society. Zoology. France, 95: 461-469.
Selman, K., Arnold, J.M. (1977) An ultrastructural, cytochemical, analysis of oogenesis in the squid, Loli해 pealei. Journal of morphology, 152:381-388.
Smale, MJ., P.R. Buchan, (1981) Biology of Octopus vulgaris off the Coast of South Africa. Marine Biology, 65: 1-12.
Takashi, O. (1984a) Systematics, life history of benthic octopoda (1) taxonomic characters of octopodidae. didae. 6: 257-263 (in Japanese).
Takashi, O. (1984b) Systematics, life history of benthic octopoda (2) ecology of octopodidae. 6:330-335 (in Japanese).
Taki, I. (1941) On keeping octopods in an aquarium for physiological experiments with remarks on some operative techniques. Venus, 10: 139-156.
ViIlanueva, R. (1995) Experimental rearing, growth of planktonic Octopus vulgaris from hatching to settlement. Canadian Journal Fisheries, 52:2639-2650.
Wells, M.J., Wells, J. (1972) Sexual display, mating of Octopus vulgaris Cuvier, O. cyanea Gray, attempts to alter the performance by manipulating the glandular condition of the animals. Animal behaviour, 20: 293-308.
Woods, J. (1965) Octopus-watching off Capri. Animals, 7:324-327.
