The diversity of the Baikal lineage of Hydra oligactis Pallas, 1766: molecular and morphological evidence

Abstract. In this paper, molecular analyses of Baikal hydras from the ‘oligactis group’, based on COI and ITS1–5.8S–ITS2, and morphological analysis of their holotrichous isorhizas, were performed. Low genetic diversity and shared haplotypes were found between Hydra oligactis Pallas, 1766 and Hydra...

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Detalles Bibliográficos
Autores principales: Peretolchina, Tatiana E., Khanaev, Igor V., Enushchenko, Ilya V., Sherbakov, Dmitry Y., Kravtsova, Lyubov S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2020
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040048/
https://www.ncbi.nlm.nih.gov/pubmed/32123497
http://dx.doi.org/10.3897/zookeys.912.46898
Descripción
Sumario:Abstract. In this paper, molecular analyses of Baikal hydras from the ‘oligactis group’, based on COI and ITS1–5.8S–ITS2, and morphological analysis of their holotrichous isorhizas, were performed. Low genetic diversity and shared haplotypes were found between Hydra oligactis Pallas, 1766 and Hydra baikalensis Swarczewsky, 1923 specimens, which is evidence of the mixing of these lineages. Genetic distances among all Baikal hydras (0.006) were less than the interspecific distances of other hydras. The size of hydras and proportions of their holotrichous isorhizas varied depending on microhabitat and environmental conditions. Our combined molecular and morphological approach proves that H. baikalensis is synonymous with H. oligactis

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