Modified Organs of Air Breathing Fishes in Korea

어류의 공기호흡 기관

  • Kim, Chi-Hong (Central Inland Fisheries Research Institute) ;
  • Park, Jong-Young (Department of Biological Sciences and Institute for Biodiversity Research, College of Natural Sciences, Chonbuk National University)
  • 김치홍 (국립수산과학원 중앙내수면연구소) ;
  • 박종영 (전북대학교 자연과학대학 생명과학과.생물다양성연구소)
  • Received : 2011.08.23
  • Accepted : 2011.09.16
  • Published : 2011.09.30

Abstract

Modified organs for air respiration in Korean fish was reviewed in the following 6 Korean fishes: three mudskippers (Boleophthalmus pectinirostris, Periophthalmus modestus and P. magnuspinnatus), two mud loaches (Misgurnus mizolepis and M. anguillicaudatus), and a torrent catfish (Liobagrus mediadiposalis). Three mudskippers and a torrent catfish have a modified epidermis to in order to make up for the deficient oxygen supply. Their epidermis has abundant intraepithelial blood capillaries except dermal capillaries situated just beneath the stratum germinativum of the epidermis in B. pectinirostris. The epidermis was thick due to component of the following cells: two kinds of glands as a small mucous cells and a large club cells in L. mediadiposalis, voluminous cells (swollen cells) swollen by epidermal cells and a small mucous cells in B. pectinirostris, and only voluminous cells having no any glandular cells in P. modestus and P. magnuspinnatus. In Particular, the epidermis of the mudskippers appears to be a web-like structure due to the swollen epithelial cells. The dermal bulges are found in B. pectinirostris and they are situated at the skin covering the body, not appendage of all the fins and the sucking disc. Another modified organ in M. mizolepis and M. anguillicaudatus occurs in intestine and its mucosal epithelium has abundant blood capillaries.

한국의 담수어류 중 짱뚱어, 큰볏말뚝말둥어, 말뚝망둥어, 미꾸리, 미꾸라지, 자가사리 등 모두 6종에서 공기로 호흡하기 위해 변형된 부속기관이 알려져 있다. 짱뚱어, 큰볏말뚝말망둥어, 말뚝망둥어, 자가사리 4종은 부족한 산소를 공기로부터 흡입하기 위해 호흡상피 (respiratory epithelium)를 갖는다. 이러한 호흡상피는 풍부한 모세혈관과 2종류의 선세포(점액세포와 곤봉세포-자가사리, 점액세포와 거대세포-짱뚱어) 또는 1종류의 선세포로 구성된 팽대세포 (말뚝망둥어와 큰볏말뚝망둥어)를 갖는다. 특히 거대세포 (swollen cell)는 상피세포의 팽대로 인해 형성된 거미줄 구조 (web-like structure)를 갖고 있다. 또한 짱뚱어의 진피성돌기 (dermal bulge)는 진피성 모세혈관이 매우 풍부하며, 지느러미 등의 부속지를 제외한 피부에 존재한다. 또한 미꾸리와 미꾸라지는 장 상피 (intestinal epithelium)에 모세혈관이 아주 풍부하게 존재한다.

Keywords

References

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