A new marine gastrotrich species of the genus Tetranchyroderma (Macrodasyida: Thaumastodermatidae) from Korea

Title
A new marine gastrotrich species of the genus Tetranchyroderma (Macrodasyida: Thaumastodermatidae) from Korea
Author(s)
이지민; 장천영
KIOST Author(s)
Lee, Ji Min(이지민)
Publication Year
2017-11-02
Abstract
Surveys of marine gastrotrichs on the coast of South Korea yielded a new species of the genus Tetranchyroderma, bearing five-pronged hooks as a cuticular armature. Tetranchyroderma hummoni sp. nov. is characterized by a dorsal armature adorned with pentancres, whose central tines are about twice as long as peripheral tines. The new species is also characterized by bearing three large and broad papillae per side along boundary row of pentancres on oral hood, a pair of rod-like cephalic tentacles, and a pair of modified pestle organs. Moreover, this new species is clearly distinguished from its congeners by the number of dorsal, dorsolateral and ventrolateral cirratum-type tubes (6− 10, 13− 19, and 9− 14 per side, respectively), and by a pair of foot-like ventral adhesive tubes. The description of the new species belonging to the genus Tetranchyroderma is based on detailed illustrations and scanning electron microscopy. We also provide a short account on the variability within the species, including the morphological difference between juveniles and adults.ned with pentancres, whose central tines are about twice as long as peripheral tines. The new species is also characterized by bearing three large and broad papillae per side along boundary row of pentancres on oral hood, a pair of rod-like cephalic tentacles, and a pair of modified pestle organs. Moreover, this new species is clearly distinguished from its congeners by the number of dorsal, dorsolateral and ventrolateral cirratum-type tubes (6− 10, 13− 19, and 9− 14 per side, respectively), and by a pair of foot-like ventral adhesive tubes. The description of the new species belonging to the genus Tetranchyroderma is based on detailed illustrations and scanning electron microscopy. We also provide a short account on the variability within the species, including the morphological difference between juveniles and adults.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/40754
Bibliographic Citation
2017년 추계 한국해양학회 학술대회, pp.113, 2017
Publisher
2017년도
Type
Conference
Language
English
Publisher
2017년도
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