Derya Akdemir

• PhD
• PostDoc Position at University of Cologne

To determine influential environmental factors on ostracod species, 105 aquatic sampling sites were sampled from the Giresun province. Sixteen species collected from 69 sites are new records for the study area. Seven of 16 species were found in their expected geographical distribution while two species (Ilyocypris bradyi, Psychrodromus olivaceus) s...

Some corrections were missed in the production process of the above article, and the publisher apologizes for the inconvenience this is causing. On page 5, the caption of Table 3 should be: Tolerance (Tol) and optimum (Opt) values for the nine most common species against the variables measured from each sampling site. Abbreviations: Count (numbers...

To understand the possible effects of changes in ambient temperature on spatial distribution and ecology of ostracods, samples were randomly collected from 70 aquatic sites with 12 different habitat types from Hatay (Turkey) province during the summer season of 2012. 14 of 19 ostracod species were newly reported for the province. The first two...

Patterns of species occurrence, dispersion ability, habitat preferences and sampling time can be important factors on the species composition. To understand effective roles of these factors on non-marine ostracods, samples were collected from 98 different shallow aquatic bodies from Osmaniye and Kilis provinces in Turkey. Total of 16 and 12 species...

Since its first description from Madagaskar, there are about 16 living (Recent) species of the genus Zonocypris reported from Afrotropical, Neotropical and Palearctic regions. Similarly, there are about 16 fossils with two (sub)species of the genus known from the Early Cretaceous (e.g., India, France, Russia, China, Brazil) to Holocene (e.g., Alban...

To investigate how habitat type influences species diversity and distribution of algae, 115 sampling sites across eight different habitats (stream, spring, lake, pool, wetland, ditch, trough, hot-spring) were randomly sampled from Ağrı province, Turkey. A total of 392 algal taxa (gamma diversity) were identified, of which 212 taxa (54.08%) belonged...

To understand interactions between ecological properties of ostracod species and the habitat types, 89 different aquatic bodies with nine different habitat types were randomly visited in Artvin province, Turkey. A total of 24 taxa, all new for the province, were found from 62 sites. Shannon-Weaver alpha diversity of the numbers of species value was...

To understand interactions between ecological properties of ostracod species and the habitat types, 89 different aquatic bodies with nine different habitat types were randomly visited in Artvin province, Turkey.

To understand interactions between ecological properties of ostracod species and the habitat types, 89 different aquatic bodies with nine different habitat types were randomly visited in Artvin province, Turkey. A total of 24 taxa, all new for the province, were found from 62 sites. Shannon–Weaver alpha diversity of the numbers of species value was...

This study is aimed to understand effective roles of ecological factors on nonmarine ostracods in Malatya province where 125 different aquatic bodies were randomly sampled during 3–10 August 2015. Totally, 24 of 25 species identified were new reports for the province while Cypridopsis lusatica was a new record for Turkey. The most common species Il...

In order to compare the ecological characteristics of non-marine ostracods with different reproductive modes, 68 sites including 11 different habitat types were examined in the province of Muğla during July of 2014. A total of 28 taxa were found and 11 of them were new reports for Muğla. Sexual populations of Psychrodromus olivaceus and P. fontinal...

To explore the relationship between ostracods carapace (body) size and altitude, 117 non-marine aquatic habitats were sampled from Mersin province (Turkey) during 03–09 October 2015. A total of 36 species and 14 sub-fossils were detected from 66 of 117 sites located between −3 m and 1630 m a.s.l. Thirty-four of the species are previously unknown in...

To gain a better understanding of the effect of reproductive modes and swimming ability on ostracod distribution, we visited 111 randomly selected aquatic sites in Kırşehir province. A total of 35 ostracods were newly reported for the area. The number of species with and without swimming setae was not statistically different, but numbers of sexual...

ABSTRACT Cabralcandonini tribe n., with the type genus Cabralcandona gen. n. from an artesian well in the San Marcos, Texas (U.S.A.) and six other genera from karst aquifers in Texas, is proposed as a new tribe of the subfamily Candoninae (Candonidae) (Crustacea, Ostracoda). The new tribe and genus have morphological features that distinguish them...

Ostracods are common lacustrine calcitic microfossils. Their faunal assemblage and morphological characteristics are important ecological proxies, and their valves are archives of geochemical information related to palaeoclimatic and palaeohydrological changes. In an attempt to assess ostracod ecology (taxonomic diversity and valve morphology) comb...

Endosymbiotic bacteria are extremely common and diverse in arthropods. Cardinium, maternally transmitted intracellular bacteria, can contribute to the fitness of the host and can manipulate its reproduction by feminization, cytoplasmic incompatibility, and thelytokous parthenogenesis. Non-marine ostracods can reproduce asexually as well as sexually...

Ostracods are common lacustrine calcitic microfossils. Their faunal assemblage and morphological characteristics are important ecological proxies, while their valves are archives of geochemical information related to palaeoclimatic and palaeohydrological changes. In an attempt to assess ostracod ecology (taxonomic diversity and valve morphology) co...

A total of 52 ostracod taxa (35 live spp. 17 subfossils) were collected from 70 shallow aquatic bodies with 11 different habitat types in Ağrı province (Turkey). Fabaeformiscandona acuminata is a new record for the Turkish ostracod fauna while 29 species were new for the province. Three types of habitats (stream, ditch and pond) contained the highe...

In order to determine the distribution of ostracods species between sea level and 1133 m a.s.l. in the Sakarya Province of Turkey, 83 different aquatic sites were randomly sampled during 9–12 May, 2014. This sampling yielded a total of 9598 individuals belonging to 33 taxa (31 living). The species Vestalenula cuneata and Kovalevskiella phreaticola...

The relationship between ecological characteristic of freshwater ostracods and their habitatpreferences has been a critical issue for understanding of both current and past aquatic conditions. Toevaluate this idea, 121 water bodies with 11 different habitat types were randomly sampled in the province ofKütahya. Water quality measurements indicated...

1. Wolbachia are intracellular, maternally transmitted endosymbiotic bacteria and very common among arthropod groups. Wolbachia are capable of manipulating the reproductive systems of infected hosts, resulting in various reproductive phenotypes, including feminization, cytoplasmic incompatibility, parthenogenesis causing male deaths. 2. In present...

We describe a new genus, Ufocandona gen. nov. with its type species Ufocandona hannaleeae gen. et sp. nov., from an artesian well in San Marcos, Texas, USA. The new genus has diagnostic characteristics that distinguish it from other genera in Candonidae, including the asymmetric shape of the valves, the smooth central area on the external surface o...

Rugosuscandona scharfi gen. nov. sp. nov. is described as a new genus of the family Candonidae from groundwaters of Texas, USA. The new genus differs from its congeners based on the presence of relatively long pore canals with sensory seta on the carapace surface, 6-segmented first antenna (A1), absence of bristles (t setae untransformed) and z set...

In order to investigate the relationship of freshwater ostracods with some of those physico-chemicals and sediment phosphate concentrations, 97 shallow aquatic bodies were sampled during July 2014 in the Sinop province (Turkey). A total of 3083 individuals belonging to 28 ostracod taxa are reported from 76 of 97 sites. While 24 of these taxa were f...

A new ostracod species, Cypria lacrima sp. nov. (Cyclocypridinae) is proposed from an artesian well in Hays County, Texas, U.S.A. The species di ers from its conspecies with the following characteristics: unique shape and pit ornamentation on carapace, absence of “e” and “g” setae on both walking and cleaning legs, long gamma seta on Mandibular pal...

Lacrimacandona n. gen. with its type species Lacrimacandona wisei n. sp. from the San Marcos artesian well on the Texas State University campus (Hays County, Texas, USA) is proposed as a new genus of the subfamily Candoninae. The new species is sexually dimorphic, and so far no congeneric species have been found. The new genus has the following dis...

To understand habitat preferences of swimming and non-swimming ostracods (Crustacea), 70 samples were randomly collected from seven different water bodies (ponds, lakes, limnocrene springs, troughs, rheocrene springs, creeks and rivers) during July 2010 in the Gaziantep region (Turkey). A total of 29 species were collected and 26 of them are classi...

ABSTRACT 1. In this study, a checklist of the non-marine ostracods of Turkey is prepared by means of available literature since 1950s. Accordingly, total of 143 species belonging to 49 genera in 18 subfamilies of 10 families were listed following the most currently acceptable taxonomy. 2. Three species (Stenocypris bolieki, Hemicypris congenera, He...

The genus Zonocypris (Kempf-Index: G598) was initially described from Madagascar by G.W. Müller in 1898. Since then, 18 living (Recent) species (Z. alveolata, Z. calcarata, Z. cordata, Z. corrugata, Z. costata, Z. dadayi, Z. elegans, Z. glabra, Z. hispida, Z. inconspicua, Z. inornata, Z. laevis, Z. lata, Z. lilljeborgi, Z. peralta, Z. pilosa, Z. tu...

We investigated how the richness and ecological characteristics of non-marine ostracod species varied across nine 100-m elevation bands (from 549 to 1457 m) in the Çankırı region. We collected a total of 37 taxa (25 living and 12 sub-recent) from 114 of 130 aquatic sites sampled during September of 2011; 34 of the taxa were new records for the regi...

1. In this study, a checklist of the non-marine ostracods of Turkey is prepared by means of available literature since 1950s. Accordingly, total of 143 species belonging to 49 genera in 18 subfamilies of 10 families were listed following the most currently acceptable taxonomy. 2. Three species (Stenocypris bolieki, Hemicypris congenera, Hemicypris...

Although Turkey has a variety of wetlands of different types and sizes, many of them are threatened by human activities. To show the biological importance of these habitats, samples were randomly collected from 173 different wetland sites in the Ankara region during the summer of 2011. 31 ostracod taxa belonging to 14 genera were identified, includ...

Troughs are artificially transformed natural springs, underground waters, or related habitats. Some effects of such transformation are mentioned in a few studies, but there has been no extensive study on species composition and diversity in troughs. To contribute to the knowledge on the ostracods in troughs, we examined ostracod composition and div...

To understand the relationship between local (alpha) diversity of ostracods and their distribution, 95 different locations were randomly sampled from southern Kahramanmaraş (Turkey) between 7 June and 31 July, 2010. Total of 46 ostracods were encountered from 68 sites. Four alpha diversity indices (Shannon-Wiener, Menhinick, Brillouin, Margalef) in...

We evaluated Rapoport's rule which states a negative correlation between species richness and altitude. To understand the relationship between altitude and reproductive modes (a/sexual) of non-marine ostracods, 166 aquatic bodies in Ordu region, Turkey were randomly sampled from July 11 to July 16, 2010. A total of 26 species of ostracods were foun...

A total of 23 ostracod taxa were found in 48 of 90 different water bodies (wetlands, springs, lakes, creeks, etc.) located at moderate to high elevation (530–1,095 m) in Diyarbakır province. The ecological tolerances and optimum values for environmental variables of 15 species were analyzed. Accordingly, maximum numbers of species were found betwee...

To understand ostracod distribution and ecology at high altitudes (1659–2889 m a.s.l.), 78 differ-ent aquatic sites located in the city of Van were sampled during summer of 2009. A total of 29 ostracod species were recorded in 57 sites. Among the species, Trajancypris laevis (G.W. Muïler 1900), is a new report for the Turkish ostracod fauna. First...

Bisexual populations of Ilyocypris inermis Kaufmann, 1900 were reported for the fi rst time from 5 diff erent aquatic bodies in Bolu and Erzincan (Turkey). Th e males were compared with the males of the other 11 species of the genus Ilyocypris (I. australiensis, I described based on examinations of the soft body parts (e.g., hemipenis, legs, claspi...

During the summer (July-August) of 2007, a total of 23 freshwater ostracods belonging to 14 genera were collected from 50 out of 90 different bodies of water in Diyarbakir. Of these 23 finds, Herpetocypris intermedia is a new report for Turkish ostracod fauna. In addition, 11 species (Ilyocypris decipiens, I. inermis, Eucypris virens, Herpetocypris...

Troughs are artificially transformed natural springs, underground waters, or related habitats. Some effects of such transformation are mentioned in a few studies, but there has been no extensive study on species composition and diversity in troughs. To contribute to the knowledge on the ostracods in troughs, we examined ostracod composition and d...

For this study, ostracod samples collected from a total of 9 stations in 2 maar lakes (Ac› and Meke) and 1 sinkhole lake (Meyil) in Konya, Turkey were investigated. Accordingly, 14 ostracod taxa (Darwinula stevensoni, Candona angulata, Candona sp. 1, Candona sp. 2, Pseudocandona marchica, Cypria sp., Ilyocypris gibba, I. bradyi, I. monstrifica, Het...

Distribution: H. kemali is currently known only from Ereğli marsh (southern Anatolia). The total marsh area is less than 100 km 2 . Abundance: Several populations in Ereğli (Hankó 1924), Lake Gölcük (Battalgazi 1944), Lake Işıklı (Karaman 1971), Antalya (Küçük and İkiz 2004) and Meyil Sinkhole Lake (Gaygusuz et al. 2007) currently exist but their a...