Early life history of the eastern Korean tetraploid spined loach, lksookimia yongdokensis (Pisces: Cobitidae)
- 주제(키워드) artificial fertilisation , fecundity , mature egg size , hatching of the embryo , larva
- 주제(기타) Zoology
- 설명문(일반) [Ko, Myeong-Hun; Jeon, Yeon Seon; Won, Yong-Jin] Ewha Womans Univ, Div EcoSci, Seoul 03760, South Korea; [Won, Yong-Jin] Ewha Womans Univ, Dept Life Sci, Seoul 03760, South Korea
- 등재 SCIE, SCOPUS
- 발행기관 INST VERTEBRATE BIOLOGY AS CR
- 발행년도 2017
- URI http://www.dcollection.net/handler/ewha/000000151572
- 본문언어 영어
- 저작권 이화여자대학교 논문은 저작권에 의해 보호받습니다.
초록/요약
We investigated whether tetraploidy in Iksookimia yongdokensis adds more species specific variation in its early life history characteristics. To this end, morphological and temporal characteristics were analysed using artificial fertilisation and laboratory culture, and the results were compared to seventeen other species of the family Cobitidae. Extensive comparison of these characteristics among the cobitid species showed that tetraploid I. yongdokensis was apparently longer in egg diameter (1.54 +/- 0.08 mm), hatching size (5.8 +/- 0.15 mm in total length), and time to hatching (65 hours after fertilisation) than the other diploid cobitid species. With respect to these characteristics, I. yongdokensis was most similar to the congeneric species of Iksookimia (except I. pacifica). Next closest in similarity, were the other two species of different genera, Kichulchoia brevifasciata and Cobitis takatsuensis. Notably, all of the species with similar characteristics to I. yongdokensis were coincident in that they prefer a similar habitat, that being a bottom of pebbles and cobbles in middle to upper streams. In conclusion, the present study indicates that characteristics of the early life history of cobitid species are associated with both taxonomic closeness and habitat type.
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