Sexual Maturity and Early Life History of the Mudskipper Scartelaos gigas (Pisces, Gobiidae): Implications for Conservation
0
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
Scartelaos gigas is an amphibious mudskipper species that inhabits mud flats in Korea, China, and Taiwan. This fish is at risk of extinction because of its very restricted habitat and overexploitation. Information about this fish’s reproductive characteristics is needed for species conservation. The sexual maturity and early life history of S. gigas were investigated through histological methods and direct observation of eggs in the wild, respectively. In total, 560 individuals of S. gigas were collected with the aid of fishermen from March 2003 to October 2003 at Jung-do Island, southwest Korea. Through microscopic observations of gonadal development, it was determined that S. gigas of both sexes were immature in April, but began to reach maturity in May, and were then fully mature by June, which was maintained until July. In August, some female fish developed early oocytes, but by September oocytes were observed to have degenerated and had been absorbed. Spawned eggs were elliptical and had an average size of 1.37 mm (long axis) by 0.69 mm (short axis). The newly hatched larvae (3.03 mm total length, TL) had an open mouth and anus, two melanophores near the anus, and one large melanophore between the 18th and 19th myomeres. The larvae (3.18 mm TL) showed absorption of the yolk and oil globule within 5 days after hatching and became prelarvae. This species should be considered vulnerable or conservation-dependent, and thus parental fish need to be protected from fishermen during the main spawning season (June).
Abstract
Scartelaos gigas is an amphibious mudskipper species that inhabits mud flats in Korea, China, and Taiwan. This fish is at risk of extinction because of its very restricted habitat and overexploitation. Information about this fish’s reproductive characteristics is needed for species conservation. The sexual maturity and early life history of S. gigas were investigated through histological methods and direct observation of eggs in the wild, respectively. In total, 560 individuals of S. gigas were collected with the aid of fishermen from March 2003 to October 2003 at Jung-do Island, southwest Korea. Through microscopic observations of gonadal development, it was determined that S. gigas of both sexes were immature in April, but began to reach maturity in May, and were then fully mature by June, which was maintained until July. In August, some female fish developed early oocytes, but by September oocytes were observed to have degenerated and had been absorbed. Spawned eggs were elliptical and had an average size of 1.37 mm (long axis) by 0.69 mm (short axis). The newly hatched larvae (3.03 mm total length, TL) had an open mouth and anus, two melanophores near the anus, and one large melanophore between the 18th and 19th myomeres. The larvae (3.18 mm TL) showed absorption of the yolk and oil globule within 5 days after hatching and became prelarvae. This species should be considered vulnerable or conservation-dependent, and thus parental fish need to be protected from fishermen during the main spawning season (June).
참고문헌 (33)
- Billard R, "Endocrine control of spermatogenesis in teleost fish", Can J Fish Aquat Sci, 39, pp.65~79 (1982)
- Chung EY, "A study on the process of the ovarian maturation of the blue-spotted mud hopper,Boleophthalmus pectinirostris(Linnaeus)", J Mar Dev Res Kunsan Nat’l Univ, 1, pp.19~36 (1989)
- Chung EY, "Sexual maturation of the blue-spotted mud hopper,Boleophthalmus pectinirostris(Linnaeus)", J Korean Fish Soc, 24, pp.167~176 (1991)
- Hoda SMS, "Maturation and fecundity of the mudskipper Boleophthalmus dussumieri Cuv.& Val.from the Karachi coast", Bull Nat’l Inst Oceanography, 19, pp.73~78 (1986)
- 정순재, "한국 남서 갯벌지역 짱뚱어 (Boleophthalmuspectinirostris)의 연령과 성장", 한국수산과학회지, 37(1), pp.44~50 (2004), 한국수산과학회
- Jeong SJ, "Habitat and spawning of the blue mudskipper, Boleophthalmus pectinirostris distributed in the Kangjin Bay", Bull Fish Sci Inst Chonnam Nat’l Univ, 18, pp.92~97 (2010)
- Kendall AW, "Early life history stages of fishes and their characters. In Ontogeny and Systematics of Fishes", pp.11~22 (1984), American Society of Ichthyologists and Herpetologists
- 김진구, "전장빈도분석에 의한 짱뚱어 Beleophthalmus pectinirostris 0세어의 성정 추정", 한국수산과학회지, 40(1), pp.50~52 (2007), 한국수산과학회
- 김삼연, "별망둑 Chasmichthys gulosus (Guichnot) 의 생식소 발달 및 생식주기", 한국어류학회지, 16(4), pp.261~270 (2004), 한국어류학회
- Koga H, "Appearance and distribution of mudskipper’s larvae and juveniles", Bull Res Inst Shallow Sea Tideland, 5, pp.45~49 (1991)
- Koga H, "Seasonal change of the burrows’ form of mudskipper", Bull Saga Prefect Ariake Fish Exp Stn, 14, pp.81~84 (1992)
- Koga H, "Studies on artificial propagation of mud skipper Boleophthalmus pectinirostris (Linnaeus): III. Hatching and larval rearing", Bull Saga Prefect Ariake Fish Exp Stn, 11, pp.17~28 (1989)
- Koga H, "Studies on artificial propagation of mud skipper Boleophthalmus pectinirostris (Linnaeus): I. Rearing of adult mud skipper", Bull Saga Prefect Ariake Fish Exp Stn, 11, pp.1~7 (1989)
- Koga H, "Studies on artificial propagation of mud skipper Boleophthalmus pectinirostris (Linnaeus): II. Collecting eggs by artificial spawning nest and spawning conditions", Bull Saga Prefect Ariake Fish Exp Stn, 11, pp.9~16 (1989)
- Lam TJ, "Environmental influences on gonadal activity in fish.In:Fish Physiology,V.9B", pp.65~116 (1983), Academic Press
- Lee JS, "Reproductive cycle and gonadal development of the naked-headed goby,Favonigobius gymnauchen(Teleostei:Gobiidae)", J Korean Fish Soc, 33, pp.219~224 (2000)
- Lin PL, "Five new records of coastal fishes from western Taiwan", Zool Stud, 33, pp.174~176 (1994)
- Miller PJ, "The ecology of gobioid fishes.In Fish Reproduction:Strategies and Tactics", pp.118~153 (1984), Academic Press
- Murdy EO, "A taxonomic revision and cladistic analysis of the Oxudercine gobies(Gobiidae:Oxudercinae)", Rec Aust Mus Suppl, 11, pp.1~93 (1989)
- Nagahama,Y, "The functional morphology of teleost gonads.In Fish Physiology.Vol 9", pp.223~275 (1983), Academic Press
- Noda S, "Studies on artificial propagation of mud skipper Boleophthalmus pectinirostris (Linnaeus) : IV. Feed of young fishes", Bull Saga Prefect Ariake Fish Exp Stn, 12, pp.1~6 (1990)
- Noda S, "Studies on artificial propagation of mud skipper Boleophthalmus pectinirostris (Linnaeus) : V. Rearing young fishes in winter", Bull Saga Prefect Ariake Fish Exp Stn, 12, pp.7~13 (1990)
- Okiyama M, "An Atlas of the Early Stage Fishes in Japan" (1988), Tokai Univ Press
- 박경동, "Age and Growth of the Mudskipper, Scartelaos gigas (Perciformes, Gobiidae) from Korea", Animal Cells and Systems, 12(4), pp.305~311 (2008), 한국통합생물학회
- Randall JE, "A checklist of the fishes of the South China Sea", Raffles Bull Zool Suppl, 8, pp.569~667 (2000)
- Russell FS, "The Eggs and Planktonic Stages of British Marine Fishes" (1976), Academic Press
- Ryu BS, "Ecology and life history of Boleophthalmus pectinirostris in Korea", J Korean Fish Soc, 28, pp.316~324 (1995)
- Washio M, "Age and growth of the mudskipper Boleophthalmus pectinirostris distributed in the mud flat of Midori river,Kumamoto Prefecture", Nippon Suisan Gakkaishi, 57, pp.637~644 (1991)
- Washio M, "Maturation of the mudskipper Boleophthalmus pectinirostris distributed in the mud flats of the Midori river,Kumamoto Prefecture", Nippon Suisan Gakkaishi, 59, pp.575~580 (1993)
- Yasutake WT, "Microscopic Anatomy of Salmonids:An Atlas", United States, Department of the Interior, Fish and Wildlife Service, ~ (1983)
- Yuzuriha M, "Ecological study of mud skipper Boleophthalmus pectinirostris(Linnaeus):III.Appearance and distribution of larvae and juveniles", Bull Saga Prefect Ariake Fish Exp Stn, 12, pp.15~20 (1990)
- Yuzuriha M, "Ecological study of mud skipper Boleophthalmus pectinirostris(Linnaeus):IV.Ecology of young fish", Bull Saga Prefect Ariake Fish Exp Stn, 12, pp.21~27 (1990)
- Zhang QY, "Studies on induced ovulation,embryonic development and larval rearing of the mudskipper(Boleophthalmus pectinirostris)", Aquaculture, 83, pp.375~385 (1989)