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Fine Structure of Oocyte Envelopes of Diploid and Triploid Biotypes in Cobitis hankugensis-Iksookimia longicorpa Complex  

Ko, Meong-Hun (Faculty of Biological Sciences and Biodiversity for Institute, College of Natural Sciences, Chonbuk National University)
Park, Jong-Young (Faculty of Biological Sciences and Biodiversity for Institute, College of Natural Sciences, Chonbuk National University)
Publication Information
Korean Journal of Ichthyology / v.22, no.1, 2010 , pp. 56-60 More about this Journal
Abstract
The Cobitis hankugensis-Iksookimia longicorpa complex from Korea has been presumed to be a unisexual lineage, originating from C. hankugensis and I. longicorpa and having almost all females. Recently, it was confirmed that the complex consisted of one diploid and two triploid complexes. From observation of their oocyte envelopes, three forms could be classified: a villous projection in I. longicorpa, a granular one in C. hankugensis and two triploid complexes, and a granule with villous one in the diploid complex. Even within the same granular projection, they showed specific features in length and density number from each other. These architectures are first observed in cobitid complexes and may playa role in identification of diploids and triploids.
Keywords
Oocyte; envelope; Cobitis hankugensis-Iksookimia longicorpa complex; diplopid; triploid;
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