DOI QR코드

DOI QR Code

Spawning and Hatching of Octopus minor

낙지 (Octopus minor)의 산란과 부화

  • Kim, Dong-Soo (Haenam Maritime Affairs and Fisheries Office, Mokpo Regional Maritime Affairs and Fisheries Office) ;
  • Kim, Jae-Man (Division of Natural Sciences, Mokpo National University)
  • 김동수 (목포지방해양수산청 해남해양수산사무소) ;
  • 김재만 (목포대학교 기초과학부 생물학)
  • Published : 2007.08.31

Abstract

We investigated the reproductive behavior of Octopus minor, order Octopoda, class Cephalopoda under laboratory conditions. Each mature female octopus was kept in an aquarium with a plastic tube for shelter, and one mature male was introduced for the purpose of copulation. Before spawning, the female coated the roof of the shelter with a light-green material, upon which it then fixed its eggs one by one. This spawning behavior lasted 1 to 3 days. Fertilized females spawned 54 eggs on average, ranging from 21 to 112 eggs at 72 to 98 days after copulation. The attached eggs were 18.1-19.0 mm in length, 5.0-6.1 mm in width, and 0.30-0.38 g in weight. The mother octopods did not feed; they attended to the eggs by using their arms to rub the egg surfaces and used their funnel to blow sediments off of the eggs. At water temperatures of $20.9-21.5^{\circ}C$, the fertilized eggs hatched within 73 to 90 days after being spawned. The effective cumulative water temperature was $1,569-1,892^{\circ}C$. At the end of incubation, the body weight of the mother octopods was reduced to approximately 56% of the initial weight, and most mother octopods died soon after the young hatched.

Keywords

References

  1. Chang, D.J. and D.A. Kim. 2003. Characteristics by the behaviour and habits of the common octopus (Octopus minor). J. Kor. Fish. Soc., 36, 735-742 https://doi.org/10.5657/kfas.2003.36.6.735
  2. Chu, C. and S.G. Kim, 1990. Studies on the development of techniques on seedling production of Octopus vulgaris. J. Nat'l. Fish. Res. Dev. Inst., 86, 92-97
  3. Chung, E.Y., B.G. Kim, S.W. Kim and T.S. Ko. 1999. Reproductive ecology of Octopus ocellatus on the west coast of Korean Yellow Sea. J. Int. Soc. Yellow Sea Res., 5, 33-45
  4. Hanlon, R.T. 1983. Octopus briarreus, In: Cephalopod Life Cycle I. Boyle, P.R. ed., Academic Press, London, 251-166
  5. Hamasaki, K., K. Hukunaga, Y. Yosida and K. Maruyama. 1991. Notes on the effects of Nannochloropsis on the reproduction and growth of octopus larvae and laboratory culture using 20 fish tank. Res. Dev. Cult. Fish. Tech., 19, 75-84
  6. Itami, K. 1971. On the feeding of the hatched octopus larvae. Hyogo Pref. Fish. Exp. Rep., 1-6
  7. Itami, K., Y. Izawa, S. Maeda and K. Nakai. 1963. Notes on the laboratory culture of the octopus larvae. Bull. Jap. Soc. Fish., 29, 514-519 https://doi.org/10.2331/suisan.29.514
  8. Kim, B.G. 2003. Reproductive ecology and seeding production of the octopus, Octopus ocellatus on the west coast of Korea. Ph.D. Thesis, Kunsan National University, 1-102
  9. Kim, B,G., S.W. Kim, J.C. Jun, C.R. Kim and J.S. Kim. 1997. Studies on the development of techniques on seeding production of Octopus ocellatus. Rep. West Sea Fish. Res. Inst., Nat'l Fish. Res. Dev. Inst, 297-304
  10. Kim, D.S. and J.M. Kim. 2006. Sexual maturity and growth characteristics of Octopus minor. J. Kor. Fish. Soc., 39,410-418 https://doi.org/10.5657/kfas.2006.39.5.410
  11. Kim, S.T, J.Y. Kim, J.I. Kim and S.D. Hwang. 2004. Growth and spawning of common octopus (Octopus minor) in southern coast of Korea. Proc. Symp. Fish. Sci. Soc., 2004, 362-363
  12. Kinoue, K. 1969. Breeding of the octopus. Ser. Fish. Breed. Cult., 20, 1-50
  13. Kubo, I. 1976. Squids and octopuses. In: Continuation of Special Discipline on Fisheries Resources 6, Baihukan, Tokyo, 188-264
  14. Kume, M.S. and G.M. Tan, 1984. Cephalopoda. In: Invertebrate Embryology. Baihukan, Tokyo, 376-384
  15. Mangold-Wirz, K. 1963. Biologie des cephalopodes benthique et nectonique dells. Mer Catalane, 21, 335-364
  16. Moon, S.H. 1989. A study on the morphology and biology of Octopus minor in Kyoungi Bay, Yellow sea. M.S. Thesis, Inha University, Korea, 1-49
  17. Naef, A. 1923. Die cephalopoden. In: Systematik, Fauna und Flore des Golfes von Neapel und der Angrenzenden Meeres Abschnifte, Monographie, 35 Pt. 1(2). Verlag von R. Friedlander and sohn, Berlin, 149-863
  18. Okutani, T. 1984. Biology of Cephalopoda 31. Ocean Life, 6, 181
  19. Tanaka, J. 1958. On the stock of Octopus vulgaris Lamarck, on the east coast of Boso peninsula, Japan. Bull. Jap. Soc. Sci. Fish., 24, 601-607 https://doi.org/10.2331/suisan.24.601
  20. Wells, M.J. and J. Wells. 1959. The function of the brain of octopus in tactile discrimination. J. Exp. Biol., 34, 131-142
  21. Wells, M.J. and J. Wells. 1971. Octopus - Physiology and Behaviour of an Advanced Invertebrata. John Wiley & Sons, New York, 1-417

Cited by

  1. Maturity and spawning of the giant Pacific octopus, Octopus dofleini in the coast of Gangwondo, East Sea vol.50, pp.2, 2014, https://doi.org/10.3796/KSFT.2014.50.2.154
  2. 한국 탄도만 낙지 (Octopus minor) 의 자원생물학적 연구 vol.34, pp.2, 2007, https://doi.org/10.9710/kjm.2018.34.2.95
  3. Feeding Ecology of Octopus minor in the Mud Flats vol.32, pp.3, 2007, https://doi.org/10.13000/jfmse.2020.6.32.3.665
  4. Construction of Artificial Spawning Area for Octopus minor in Muddy Tidal Flat, Chonnam Area vol.33, pp.3, 2007, https://doi.org/10.13000/jfmse.2021.6.33.3.561