Dataset Information

Complete mitochondrial genome of the diving beetle, Cybister brevis Aube, 1838 (Coleoptera, Dytiscidae) from Jeju Island.

ABSTRACT: The mitochondrial genome of Cybister brevis Aubé, 1838, is 16,198 bp long and includes 37 genes that are highly conserved in the family Dytiscidae. Phylogenetic analysis revealed that all genera in Dytiscidae, except Hydroporus and Oreodytes, are monophyletic. The Hydroporini tribe was found to be polyphyletic and closely associated with the Hygrotini, Bidessini, and Hyphydrini tribes. Dytiscinae was found to be a highly divergent polyphyletic group comprising three distinct clades. This study also revealed that C. brevis is closely related to Cybister japonicus and that the tribe Cybistrini diverged relatively early compared to other tribes in Hydroporinae. These findings are consistent with those of previous studies and provide new insights into the phylogeny of the Dytiscidae family, which has previously shown discrepancies between morphological characteristics and molecular data. The genome-level analyses conducted in this study serve as a valuable foundation for future investigations into the Dysticidae evolutionary history.

SUBMITTER: Oh DJ

PROVIDER: S-EPMC10885740 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature

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Complete mitochondrial genome of the diving beetle, Cybister brevis Aubé, 1838 (Coleoptera, Dytiscidae) from Jeju Island.

Oh Dae-Ju DJ Ko Min-Hee MH Min Dong-Won DW Jung Yong-Hwan YH

Mitochondrial DNA. Part B, Resources 20240222 2

The mitochondrial genome of Cybister brevis Aubé, 1838, is 16,198 bp long and includes 37 genes that are highly conserved in the family Dytiscidae. Phylogenetic analysis revealed that all genera in Dytiscidae, except Hydroporus and Oreodytes, are monophyletic. The Hydroporini tribe was found to be polyphyletic and closely associated with the Hygrotini, Bidessini, and Hyphydrini tribes. Dytiscinae was found to be a highly divergent polyphyletic group comprising three distinct ...[more]

PMID: 38406669

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Project description:High species diversity and endemism within Madagascar is mainly the result of species radiations following colonization from nearby continents or islands. Most of the endemic taxa are thought to be descendants of a single or small number of colonizers that arrived from Africa sometime during the Cenozoic and gave rise to highly diverse groups. This pattern is largely based on vertebrates and a small number of invertebrate groups. Knowledge of the evolutionary history of aquatic beetles on Madagascar is lacking, even though this species-rich group is often a dominant part of invertebrate freshwater communities in both standing and running water. Here we focus on large bodied diving beetles of the tribes Hydaticini and Cybistrini. Our aims with this study were to answer the following questions 1) How many colonization events does the present Malagasy fauna originate from? 2) Did any colonization event lead to a species radiation? 3) Where did the colonizers come from--Africa or Asia--and has there been any out-of-Madagascar event? 4) When did these events occur and were they concentrated to any particular time interval? Our results suggest that neither in Hydaticini nor in Cybistrini was there a single case of two or more endemic species forming a monophyletic group. The biogeographical analysis indicated different colonization histories for the two tribes. Cybistrini required at least eight separate colonization events, including the non-endemic species, all comparatively recent except the only lotic (running water) living Cybister operosus with an inferred colonization at 29 Ma. In Hydaticini the Madagascan endemics were spread out across the tree, often occupying basal positions in different species groups. The biogeographical analyses therefore postulated the very bold hypothesis of a Madagascan origin at a very deep basal node within Hydaticus and multiple out-of-Madagascar dispersal events. This hypothesis needs to be tested with equally intense taxon sampling of mainland Africa as for Madagascar.

Dataset Information

Complete mitochondrial genome of the diving beetle, Cybister brevis Aube, 1838 (Coleoptera, Dytiscidae) from Jeju Island.

Publications

Complete mitochondrial genome of the diving beetle, <i>Cybister brevis</i> Aubé, 1838 (Coleoptera, Dytiscidae) from Jeju Island.

Similar Datasets

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