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The Model Organism Hermissenda crassicornis (Gastropoda: Heterobranchia) Is a Species Complex.


ABSTRACT: Hermissenda crassicornis is a model organism used in various fields of research including neurology, ecology, pharmacology, and toxicology. In order to investigate the systematics of this species and the presence of cryptic species in H. crassicornis, we conducted a comprehensive molecular and morphological analysis of this species covering its entire range across the North Pacific Ocean. We determined that H. crassicornis constitutes a species complex of three distinct species. The name Hermissensa crassicornis is retained for the northeast Pacific species, occurring from Alaska to Northern California. The name H. opalescens is reinstated for a species occurring from the Sea of Cortez to Northern California. Finally, the name H. emurai is maintained for the northwestern species, found in Japan and in the Russian Far East. These three species have consistent morphological and color pattern differences that can be used for identification in the field.

SUBMITTER: Lindsay T 

PROVIDER: S-EPMC4841509 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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The Model Organism Hermissenda crassicornis (Gastropoda: Heterobranchia) Is a Species Complex.

Lindsay Tabitha T   Valdés Ángel Á  

PloS one 20160422 4


Hermissenda crassicornis is a model organism used in various fields of research including neurology, ecology, pharmacology, and toxicology. In order to investigate the systematics of this species and the presence of cryptic species in H. crassicornis, we conducted a comprehensive molecular and morphological analysis of this species covering its entire range across the North Pacific Ocean. We determined that H. crassicornis constitutes a species complex of three distinct species. The name Hermiss  ...[more]

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