AI Article Synopsis
- A new species of Moina, named Moina siamensis sp. nov., has been identified from Thailand's freshwater ecosystems, which is part of the Cladocera group.
- The species is closely related to M. weismanni and can be mistaken for it due to similar physical traits in females and males, but they differ significantly in the structure of their ephippium.
- Future research using genetic markers is recommended to further explore the distribution and diversity of these species, as the unique features of their ephippium could help distinguish between different populations.
Article Abstract
A new species of Moina Baird, 1850 (Cladocera: Moinidae) is described based on material collected from Thailand (South-East Asia). In tropical Asia, Moina siamensis sp. nov. could be confused easily with M. weismanni Ishikawa, 1896, because of morphological similarities in parthenogenetic females and males of both species. The outstanding difference between these two taxa concerns the structure of the ephippium in gamogenetic females, which is highly visible under light and scanning electron microscopes. The mature ephippium of M. weismanni is strongly tuberous, with distinct borders between cells, whereas the ephippium of M. siamensis sp. nov. is significantly less tuberous, with prominent longitudinal lines in its central region. Since gamogenetic females only appear sporadically in moinid populations, distribution ranges of M. siamensis sp. nov., M. weismanni and sibling taxa must be clarified precisely using genetic markers in the future. Preliminary investigations of the ephippium structure may be useful for estimating the differences between populations, thus revealing much diversity within Moinidae.
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| http://dx.doi.org/10.11646/zootaxa.4554.1.6 | DOI Listing |
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