Cryptic Speciation of a Deep-Sea Demersal Fish of the Genus Bothrocara in the Japan Sea

Kido, Maiko; Itoh, Hajime; Shinohara, Gento; Kojima, Soichi

doi:10.2108/zs190038

Cited by 3 publications

(2 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such differences might explain the relationship between morphotypes and mtDNA lineages. For example, in a deep-sea eelpout Bothrocara hollandi species complex in the Japan Sea, a species that colonized the Japan Sea earlier than the sister species showed a wider bathymetrical distribution (Kido et al 2020).…”

Section: Discussionmentioning

confidence: 99%

“…The body coloration of deep-sea organisms in the mesopelagic zone (150-1,000 m depth) tends to change from reddish to black with increasing depth, and is thought to be associated with cryptic coloration (Warrant & Locket 2004). In the Bothrocara hollandi species complex of deep-sea eelpouts (Kido et al 2020), the frequency of individuals presenting the lighter color morphotype decreases with depth between 600 and 1,100 m, whereas only those of the darker color morphotype are found below 1,100 m (Okiyama 2004). Similar bathymetrical patterns for color morphotype frequency have been reported for deep-sea eelpouts Lycodes yamatoi (Balanov & Solomatov 2008, Balanov & Kukhlevskii 2011 and Lycodes nakamurae (Saveliev et al 2014).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quantitative evaluation of color morphotypes in a deep-sea snailfish, <i>Careproctus trachysoma</i> in the Japan Sea and their genetic and environmental backgrounds

Takami

Yashiki

Yahagi

et al. 2022

Plankton Benthos Res

Self Cite

View full text Add to dashboard Cite

Individuals of a deep-sea snailfish, Careproctus trachysoma, endemic to the Japan Sea have been classified into the lighter and darker color morphotypes, which are sympatrically distributed. These morphotypes have only been described qualitatively, with individuals that could not be classified as either morphotype. Therefore, in this study, we quantitatively evaluated individuals of this species using a colorimeter. Based on principal component analysis, all examined individuals were classified into two groups containing all typical individuals of the two original color morphotypes. We redefined these groups as "Red" and "Black" morphotypes. Stomach contents, sex, body length, and sampling depth did not clarify the color differences between Red and Black individuals. No genetic differences were detected between morphotypes using microsatellites, although the frequency of two mitochondrial DNA (mtDNA) groups, SOJ1 and SOJ2, was found to be significantly different. Individuals with SOJ1-type mtDNAs, which are thought to have migrated into the Japan Sea more recently than those with SOJ2-type mtDNA, showed body coloration similar to that of the Pacific species, C. pellucidus. Although further studies using more specimens are required to confirm these findings, our results indicate that C. trachysoma body color is related to mtDNA lineages.

show abstract

Section: Discussionmentioning

confidence: 99%