@article{article_577460, title={Reporting of Sexual Population of Heterocypris incongruens (Ramdohr, 1808) from a Man-Made Pond (Kahramanmaraş, Turkey) and Comparison of Hemipenes of the Genus Heterocypris Claus, 1892}, journal={Acta Aquatica Turcica}, volume={15}, pages={139–150}, year={2019}, DOI={10.22392/actaquatr.577460}, author={Yavuzatmaca, Mehmet and Külköylüoğlu, Okan}, keywords={Heterocypris, hemipenis, Kahramanmaraş, monophyletic, Palearctic}, abstract={<p class="MsoNormal" style="text-align:justify;text-indent:14.2pt;"> <span lang="en-us" style="font-size:9pt;" xml:lang="en-us">The current numbers
of the genus <i>Heterocypris </i>includes
about 68 species. When 37 species have males, males of 26 species are not known
and data is not available for five species. Among the species of the genus, <i>Heterocypris incongruens </i> has a
cosmopolitan distribution but the males of the species have only been reported
in Palearctic and Nearctic regions. During an extensive field sampling, total
of 6 males and 59 females were collected from Haydolar pond (a man-made pond)
in Pazarcık, Kahramanmaraş (Turkey) on 11 June and 08 September of 2010. During
this study, we focused on the description of the hemipenis and compared it with
others in the genus. Sexual ratio is about 1:10 in favor of females. Zenker’s
organ has 28 whorls. The lenght of the hemipenis (Lh =0.23 mm) was about 19% (ca
1/5) of the length of the carapace (L: 1.21 mm) in our samples. Distal and
proximal shields of the hemipenis show variability within the indivudals of the
male <i>H. incongruens </i> but these shields
are similar among some other species (e.g., <i>H. </i> <i>punctata </i> and <i>H. putei </i>). </span> <span lang="en-gb" style="font-size:9pt;" xml:lang="en-gb">Such similarities in hemipenes may support the fact
that the species of the genus may have a monophyletic group </span> <span lang="en-us" style="font-size:9pt;" xml:lang="en-us">. Accordingly, our
study suggest that using hemipenis as a taxonomic character should be done with
great attention because the shape of hemipenis can be changed by means of
several factors. </span> </p> <p> </p>}, number={2}, publisher={Isparta University of Applied Sciences}