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The Morphology and Morphometry of the Olfactory Organ of Southern King Spine Loach, Iksookimia hugowolfeldi (Cypriniformes, Cobitidae)

한국고유종 남방종개 Iksookimia hugowolfeldi 후각기관의 형태 및 형태계측학적 연구

  • Kim, Hyun Tae (Department of Biological Science and Institute for Biodiversity Research, College of Natural Sciences, Jeonbuk National University) ;
  • Park, Jong Young (Department of Biological Science and Institute for Biodiversity Research, College of Natural Sciences, Jeonbuk National University)
  • 김현태 (전북대학교 자연과학대학 생명과학과, 전북대학교 부설 생물다양성연구소) ;
  • 박종영 (전북대학교 자연과학대학 생명과학과, 전북대학교 부설 생물다양성연구소)
  • Received : 2020.04.28
  • Accepted : 2020.06.15
  • Published : 2020.06.30

Abstract

The morphometry and morphology of the olfactory organ of the southern king spine loach Iksookimia hugowolfeldi were investigated by stereo microscopy and statistical analysis. Its external morphology consists of two holes, the anterior and posterior nostrils. The anterior nostril (0.35~0.53 mm in diameter) forms tubular process protruding vertically from each side of the snout. The posterior nostril (0.32~0.68 mm in major diameter) is a eye-like hole parallel to the skin. Internally, the rosette structure is set with 14 to 21 lamellae and medium raphe on the inner floor. In morphometry, its lamellar number (male vs. female; 18±1.8 vs. 17±1.6, P<0.05) and lamellar number to standard length ratio (24.2±1.3% vs. 21.7±2.5%, P<0.05) was larger in male than female. The lamellar number and standard length have high correlation in male (P<0.001) but not in female (P=0.170). It seems that such characteristics of the olfactory organ of I. hugowolfeldi are related to its bottom-dwelling life which digs and takes a rest under sand and sexual dimorphism by a distinct degree in olfactory dependence for reproduction of each sex.

한국 고유종 남방종개 Iksookimia hugowolfeldi 후각기관의 형태 및 형태계측학적 특징을 확인하기 위해 실체 현미경을 이용하여 관찰하고 통계프로그램 SPSS로 분석하였다. 후각 기관의 외부 형태는 주둥이 좌우로 돌출된 튜브형의 전비공(직경 0.35~0.53 mm)과 눈모양의 후비공(장축 0.32~0.68 mm)으로 구성된다. 후각기관 내부에서는 14~21개의 후판으로 구성된 로제트 구조가 확인된다. 형태계측학적 분석에서 후판개수(수컷 vs. 암컷, 18±1.8 vs. 17±1.6)와 체장대비 후판개수 비율(24.2±1.3% vs. 21.7±2.5%)은 수컷이 암컷보다 더 높은 값을 나타냈다. 체장과 후판은 수컷에서 유의미한 상관관계(P<0.001)를 나타냈다. 이와 같은 남방종개의 후각기관 특징은 서식처 바닥의 모래를 파고 숨는 저서성 생활의 적응과 암수 간 생식에서의 후각의존성 차이를 반영하는 결과로 사료된다.

Keywords

References

  1. Baird, R.C., G.Y. Jumper and E.E. Gallaher. 1990. Sexual dimorphism and demography in two species of oceanic midwater fishes (Stomiiformes: Sternoptychidae) from the eastern Gulf of Mexico. Bull. Mar. Sci., 47: 561-566.
  2. Caruso, J.H. 1975. Sexual dimorphism of the olfactory organs of lophiids. Copeia, 1975: 380-381. https://doi.org/10.2307/1442897
  3. Cox, J.P. 2008. Hydrodynamic aspects of fish olfaction. J. R. Soc. Interface, 5: 575-593. https://doi.org/10.1098/rsif.2007.1281.
  4. Hara, T.J. 1986. Role of olfaction in fish behaviour. In: Hara, T.J. (ed.), The Behaviour of Teleost Fishes. Johns Hopkins University Press, Baltimore, MD.
  5. Hara, T.J. and B. Zielinski. 1989. Structural and functional development of the olfactory organ in teleosts. Trans. Am. Fish. Soc., 118: 183-194. https://doi.org/10.1577/1548-8659(1989)118<0183:SAFDOT>2.3.CO;2
  6. Kasumyan, A.O. 2004. The olfactory system in fish: structure, function, and role in behavior. J. Ichthyol., 44: S180.
  7. Kim, H.T. 2018. A comparative anatomy and histology of the olfactory organ of 17 fishes in South Korea. Ph.D. Dissertation Chonbuk Nat'l Univ., Korea, 175pp.
  8. Kim, H.T. and J.Y. Park. 2018. Functional anatomy of the olfactory organ in the torrent catfish, Liobagrus somjinensis (Siluriformes, Amblycipitidae). Korean J. Ichthyol., 30: 65-68. https://doi.org/10.35399/ISK.30.1.8
  9. Kim, H.T., S.W. Yun and J.Y. Park. 2019a. Anatomy, histology, and histochemistry of the olfactory organ of the Korean shuttles mudskipper Periophthalmus modestus. J. Morphol., 280: 1485-1491. https://doi.org/10.1002/jmor.21044.
  10. Kim, H.T., S.W. Yun, Y.J. Lee and J.Y. Park. 2019b. Morphology, histology, and histochemistry of the olfactory organ in Korean endemic fish, Rhodeus uyekii (Pices, Cyprinidae). Korean J. Ichthyol., 31: 123-130. https://doi.org/10.35399/ISK.31.3.1
  11. Kim, H.T., Y.J. Lee and J.Y. Park. 2016. An anatomical and histochemical study of the olfactory organ in rice-fish Oryzias sinensis (Pisces: Adrianichthyidae) in South Korea. Korean J. Ichthyol., 28: 223-228.
  12. Kim, I.S. and J.Y Park. 2002. Freshwater fishes of Korea. Kyo-Hak Publishing Co. Ltd., Seoul, Korea, pp. 66-67.
  13. Kim, I.S., E.K. Choi, H. Yang and M.H. Koh. 2003. Karyotype Analysis of Southern Spined Loach, Iksookimia hugowolfeldi(Pisces, Cobitidae). Korean J. Ichthyol., 15: 127-129.
  14. Kim, I.S., Y. Choi, C.L. Lee, Y.J. Lee, B.J. Kim and J.H. Kim. 2005. Illustrated Book of Korean Fishes. Kyohak Publ. Co., Seoul, 615pp.
  15. Kim, P., J.H. Han and S.L. An. 2020. Complete mitochondrial genome of Iksookimia hugowolfeldi and its phylogenetic position within genus Iksookimia. Mitochondrial DNA Part B, 5: 860-861. https://doi.org/10.1080/23802359.2020.1715292.
  16. Ko, M.H. and I.C. Bang. 2016. Egg Development and Early Life History of the Korean Southern Spine Loach, Iksookimia hugowolfeldi (Pisces: Cobitidae). Korean J. Ichthyol., 28: 156-163.
  17. Mokhtar, D.M. and H.H. Abd-Elhafeez. 2014. Light-and electron-microscopic studies of olfactory organ of Red-tail shark, Epalzeorhynchos bicolor (Teleostei: Cyprinidae). J. Micro. Ultrast., 2: 182-195. https://doi.org/10.1016/j.jmau.2014.05.003.
  18. NIBR (National Institute of Biological Resources). 2013. Inventory and management of endemic species of Korea. National Institute of Biological Resources, 147pp.
  19. Park, C.W., H.S. Kim, J.G. Kim, S.W. Yun, H.T. Kim, J.S. Park. W.S. Choi, Y.J. Cho and J.Y. Park. 2016. Microhabitat characteristics of the Korean endemic cobitid species Iksookimia hugowolfeldi inhabited at Geogeum island and Jangheung-gun in Korea. Korean J. Ichthyol., 28: 35-40.
  20. Park, C.W., J.G. Kim, S.W. Yun, H.T. Kim, J.S. Park, W.S. Choi, Y.J. Cho, Y.J. Lee and J.Y. Park. 2018. Habitat, diet, feeding and resting behaviour of the Korean endemic cobitid Iksookimia hugowolfeldi (Cobitidae, Pisces) in the wild. Folia Zoologica, 67: 1-8. https://doi.org/10.25225/fozo.v67.i1.a2.2018.
  21. Park, J.Y. 1996. A morphological study on the gonad of the species in the family Cobitidae (Pisces: Cypriniformes) from Korea. Ph.D. Dissertation, Chonbuk National University, Korea, 158pp.
  22. Park, J.Y. and I.S. Kim. 2001. Fine structures of oocyte envelopes of three related cobitid species in the genus Iksookimia (Cobitidae). Ichthyol. Res., 48: 71-75. https://doi.org/10.1007/s10228-001-8118-5.
  23. Waryani, B., R. Dai, Y. Zhao, C. Zhang and A.R. Abbasi. 2013a. Surface ultrastructure of the olfactory epithelium of loach fish, Triplophysa dalaica (Kessler, 1876) (Cypriniformes: Balitoridae: Nemacheilinae). Italian J. Zool., 80: 195-203. https://doi.org/10.1080/11250003.2013.771711.
  24. Waryani, B., Y. Zhao, C. Zhang, R. Dai and A.R. Abbasi. 2013b. Anatomical studies of the olfactory epithelium of two cave fishes Sinocyclocheilus jii and S. furcodorsalis (Cypriniformes: Cyprindae) from China. Pakistan J. Zool., 45: 1091-1101.
  25. Yamamoto, M. 1982. Comparative morphology of the peripheral olfactory organs in teleosts. In: Hara, T.J. (ed.), Chemoreception in fishes. Elsevier, Amsterdam, pp. 39-59.
  26. Zeiske, E., J. Kux and R. Melinkat. 1976. Development of the olfactory organ of oviparous and viviparous cyprinodonts (Teleostei) 1. J. Zool. Syst. Evol. Res., 14: 34-40. https://doi.org/10.1111/j.1439-0469.1976.tb00516.x
  27. Zeiske, E,, B. Theisen and H. Breucher. 1992 Structure, development, and evolutionary aspects of the peripheral olfactory system. In: Hara, T.J. (ed.). Fish chemoreception. Springer, Netherlands, pp. 13-39.