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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44869

Title: Population genetic patterns of the copepod Calanus sinicus in the northwest Pacific
Authors: Nikolaos V. Schizas H.-U. Dahms Martha Ricaurte J.-S. Hwang
Contributors: 國立臺灣海洋大學:海洋生物研究所
Date: 2014-08
Issue Date: 2017-12-07T07:54:36Z
Publisher: Hydrobiologia
Abstract: Abstract:The calanoid copepod Calanus sinicus is present throughout the year in the Bohai Sea, and is transported by the China Coastal Current southwards during winter. The seasonal movement of C. sinicus throughout its distribution should result in the genetic homogenization of the species. We tested the hypothesis of the absence of population structure in C. sinicus by analyzing the nuclear ribosomal region ITS-1 (n = 197, 303 bp) and the mitochondrial gene, cytochrome b apoenzyme (cytb) of C. sinicus (n = 155, 318 bp) from locations in Taiwan, S. Korea, and Okinawa, Japan. Twenty-eight haplotypes were identified from the ITS-1 gene and the most numerous haplotype (n = 160) was found everywhere except in S. Korea. Nine haplotypes were identified from the cytb gene and the two most numerous haplotypes (n = 140) were widespread. An excess of singletons characterized the haplotype networks of ITS-1 and cytb genes. Pairwise F ST comparisons among samples suggested that samples from S. Korea, S. Taiwan Strait, and Taipower Plant were significantly different from all other samples suggesting a high degree of structured populations in C. sinicus, for the ITS-1 gene. In the contrary, no population structure was detected with the cytb gene. Pairwise F ST comparisons among samples collected at different water depths in Turtle Island suggest that populations at depth may contribute to the genetic differentiation of C. sinicus. The two genes yielded conflicting genetic signals as the aforementioned geographic and depth-related population demarcations were observed only with the ITS-1 gene.
Relation: 741(1), pp.153-165
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/44869
Appears in Collections:[海洋生物研究所] 期刊論文

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