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Early life history of the eastern Korean Tetraploid Spined Loach, Iksookimia Yongdokensis (Pisces: Cobitidae)

Title
Early life history of the eastern Korean Tetraploid Spined Loach, Iksookimia Yongdokensis (Pisces: Cobitidae)
Authors
Ko M.-H.Jeon Y.S.Won Y.-J.
Ewha Authors
원용진
SCOPUS Author ID
원용진scopus
Issue Date
2017
Journal Title
Folia Zoologica
ISSN
0139-7893JCR Link
Citation
vol. 66, no. 3, pp. 153 - 162
Keywords
Artificial fertilisationFecundityHatching of the embryoLarvaMature egg size
Publisher
Czech Academy of Sciences
Indexed
SCI; SCIE; SCOPUS scopus
Abstract
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. © 2017, Czech Academy of Sciences. All rights reserved.
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자연과학대학 > 생명과학전공 > Journal papers
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