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A revision of the genus Littorina (Mollusca: Gastropoda) in Korea

Animal Cells and Systems 2018년 22권 6호 p.415 ~ 420
이유철, 최영재, Kern Elizabeth M. A., 신영헌, 김태호, 박중기,
소속 상세정보
이유철 ( Lee Yu-Cheol ) - SungKyunKwan University Department of Biological Sciences
최영재 ( Choe Young-Jae ) - Ewha Womans University Division of Ecoscience
 ( Kern Elizabeth M. A. ) - Ewha Womans University Division of Ecoscience
신영헌 ( Shin Yeong-Heon ) - SungKyunKwan University Department of Biological Sciences
김태호 ( Kim Tae-Ho ) - Ewha Womans University Division of Ecoscience
박중기 ( Park Joong-Ki ) - Ewha Womans University Division of Ecoscience

Abstract


Littorina Ferussac, 1822 is an abundant genus of small gastropods found in the upper littoral zone of rocky seashores worldwide. Although ecologically important, shell-based species identification in this genus is challenging due to phenotypic variation in shell morphology and lack of diagnostic characters among morphologically similar species. In this study, we revised the taxonomy of Korean Littorina species using morphological characters (shell and radula) and cox1 mitochondrial DNA sequences for three Korean species: L. brevicula, L. sitkana, and L. horikawai. Results suggest that L. sitkana was erroneously reported as L. kasatka in a previous study. A new record for Littorina horikawai (Matsubayashi & Habe in Habe, 1979), previously unknown from Korea, is described, which can be distinguished from L. sitkana by the presence of alternating white and brown spiral ribs on each whorl. Comparison of the mtDNA cox1 gene sequences shows very low intraspecific variation even between geographically distant populations. A phylogenetic tree supports a close relationship between L. horikawai and L. sitkana, consistent with earlier phylogenetic studies.

키워드

Korea; Littorina; Littorinidae; Radula; mtDNA cox1

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