DOI QR코드

DOI QR Code

Early Life History of Lefua costata (Cypriniformes : Balitoridae) from Korea

  • Received : 2020.10.18
  • Accepted : 2020.11.01
  • Published : 2020.12.31

Abstract

The purpose of this study is to observe the early life history of Korean Lefua costata and use the result as basic taxonomic research data for balitorid fish. The fertilized eggs were light green color with completely circle shape and mean size was 1.21±0.06 mm (n=30). Immediately after hatching, the size of the larvae was 2.81±0.11 mm (n=5) in mean length, with egg yolk. On the 3rd day after hatching, the preflexion larvae had a mean length of 4.64±0.09 mm (n=5), and their mouth was opened to start feeding. On the 8th day after hatching, a mean length of the postflexion larvae was 9.43±0.46 mm (n=5), the distal part of the notochord was bent to 45°, and 16 fin rays were developed on the caudal fin. On the 31st day after hatching, a mean length of juveniles was 22.3±0.85 mm (n=5), and the number of fin rays was the same as that of adult fish with (iv8) dorsal fins and (iii8) anal fins.

Keywords

References

  1. Aoyama S, Doi T (2011) Morphological comparison of early stages of two Japanese species of eight-barbel loaches: Lefua echigonia and Lefua sp. (Nemacheilidae). Folia Zool 60:355-361. https://doi.org/10.25225/fozo.v60.i4.a14.2011
  2. Balon EK (1985) Early Life Histories of Fishes: New Developmental, Ecological and Evolutionary Perspectives. Dr W Junk, Dordrecht, Nederland, p 280.
  3. Blaxter JHS (1974) The Early Life History of Fish. Spring-Verlag Berlin, Heidelberg, Germany, p 765.
  4. Hosoya K (2019) Japanese Freshwater Fish, Supplemented and Revised Compiled. Mountain and Gyeoksha Shrine, Tokyo, Japan, p 560.
  5. Hosoya K, Ito T, Miyazaki JI (2018) Lefua torrentis, a new species of loach from western Japan (Teleostei: Nemacheilidae). Ichthyol Expl Freshwater 2:1-9.
  6. Ito TK, Hosoya K, Miyazaki JI (2019) Lefua tokaiensis, a new species of nemacheilid loach from central Japan (Teleostei: Nemacheilidae). Ichthyol Res 66:479-487. https://doi.org/10.1007/s10228-019-00690-0
  7. Kottelat M (2012) Conspectus Cobitidum: an inventory of the loaches of the world (Teleostei: Cypriniformes: Cobitoidei). Raffles Bull Zool 26:1-199.
  8. Kim IS (1997) Illustrated Encyclopedia of Fauna and Flora of Korea, Vol. 37, Freshwater Fishes. Ministry of Education, Yeongi, Korea, p 629.
  9. Kim IS, Lee EH (1995) Studies on early embryonic development of Niwaella multifasciata (Pisces: Cobitidae). Korean J Limnol 28:455-462.
  10. Kim IS, Park JY (2007) Freshwater Fishes of Korea. Kyohak, Seoul, Korea, p 467.
  11. Kim IS, Choi Y, Lee CL, Lee YJ, Kim BJ, Kim JH (2005) Illustrated Book of Korean Fishes. Kyohak, Seoul, Korea, p 134.
  12. Kim YU, Kim DS, Park YS (1987) Development of eggs, larvae and juveniles of loach, Misgurnus mizolepis Guther. Bull Korean Fish Soc 20:16-23.
  13. Nelson JS, Grande TC, Wilson MVH (2016) Fishes of the Word. 5th ed. John Wiley & Sons, Hoboken, NJ, p 192.
  14. Okiyama M (2015) An Atlas of the Early Stage Fishes in Japan. Tokai Univ Press, Tokyo, Japan, p 25-43.
  15. Song HY, Ko MH, Seo IY, Moon SJ, Bang IC (2017) Morphological development of egg and larvae of Squalidus multimaculatus (Gobioninae). Korean J Ichthyol 29:52-61.
  16. Song HY, Yang HY, Cho EM, Shin HC, Bang IC (2009) Morphological development of egg and larvae of Koreocobitis naktongensis (Cobitidae). Korean J Ichthyol 21: 247-252.
  17. Uchida K (1939) The fishes of Tyosen (Korea) part I. nematognathi, eventognathi. Bull Fish Exp St Gov Gen Tyosen 6:399-458.