Phylogeography and genetic diversity of the copepod family Cyclopidae (Crustacea: Cyclopoida) from freshwater ecosystems of Southeast Nigeria.

Autor: Ni Y; MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China., Ebido CC; MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China., Odii EC; Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria., Wang J; MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China., Orakwelu CH; Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria., Abonyi FC; Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria., Ngene CI; Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria., Okoro JO; Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria., Ubachukwu PO; Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, Enugu State, 410001, Nigeria., Hu W; MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China., Yin M; MOE Key Laboratory for Biodiversity Science and Ecological Engineering, School of Life Science, Fudan University, Songhu Road 2005, Shanghai, China. yinm@fudan.edu.cn.
Jazyk: angličtina
Zdroj: BMC evolutionary biology [BMC Evol Biol] 2020 Apr 21; Vol. 20 (1), pp. 45. Date of Electronic Publication: 2020 Apr 21.
DOI: 10.1186/s12862-020-01608-5
Abstrakt: Background: Copepods are key components of aquatic ecosystems and can help regulate the global carbon cycle. Much attention has been paid to the species diversity of copepods worldwide, but the phylogeography and genetic diversity of copepods in Nigeria is unexplored.
Results: Using a mitochondrial cytochrome c oxidase subunit I marker, we preformed phylogenetic and phylogeographic analyses for Cyclopidae copepods in Southeast Nigeria. A high species diversity of Cyclopidae in Nigeria: 5 species of Tropocyclops, 5 species of Mesocyclops and 2 species of Thermocyclops from Cyclopidae were identified in 15 populations. Moreover, we detected 18 unique haplotypes, which fell into two distinct clades. Pairwise genetic distances (uncorrected p-distances) among the species of Cyclopidae ranged from 0.05 to 0.257. Several species co-existed in the same lake, and some haplotypes were shared among different geographic populations, suggesting a dispersal of Cyclopidae in our sampling region. Finally, we found that the population genetic diversity for each species of Cyclopidae was low in Nigeria.
Conclusions: Our findings explored the species diversity and distribution of copepods within the family Cyclopidae for 15 Nigerian freshwater ecosystems: a high species diversity of Cyclopidae copepods was detected over a small geographic sampling range. Results from this study contribute to a better understanding of copepod diversity of Nigerian freshwater ecosystems.
Databáze: MEDLINE
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