82 research outputs found
An updated checklist of the Recent non-marine Ostracoda (Crustacea) of Iran, with a redescription of Eucypris mareotica (Fischer, 1855)
No full textRasouli, Hamidreza, Scharf, Burkhard, Meisch, Claude, Aygen, Cem (2016): An updated checklist of the Recent non-marine Ostracoda (Crustacea) of Iran, with a redescription of Eucypris mareotica (Fischer, 1855). Zootaxa 4154 (3): 273-292, DOI: http://doi.org/10.11646/zootaxa.4154.3.
Chirocephalus algidus Cottarelli, Aygen & Mura, 2010, sp. nov.
No full textChirocephalus algidus sp. nov. (Figs. 5–7, 13 and 15) Material examined. 4 3; 2 ƤƤ, 1 ovigerous; Cem Aygen leg. 24 - 10-1998. Type series. Holotype: adult male, 11.7 mm, dissected and mounted in polyvinyl-lactophenol on 15 slides marked Chirocephalus algidus holotype male and numbered from 1 to 15. Allotype: one female, 11.5 mm, dissected and mounted in polyvinyl-lactophenol on 7 slides marked Chirocephalus algidus allotype female and numbered from 1 to 7. Holotype and allotype are deposited in the Museum of Faculty of Fisheries, Ege University, Izmir-Turkey, registration number ESFM-BRN/ 98 - 1 Paratypes: 33; 1 Ƥ. Two males in 80 % ethanol and glycerine, 1 male and 1 female prepared for SEM. All of the paratypes are deposited in the collection of G. Mura, Dept. of Animal and Human Biology, University of Rome “La Sapienza”. Type locality. Lake Alagöl (37 ° 23 ’ 15 ”N 34 ° 30 ’ 38 ”E), 2903 m a.s.l., is a temporary pool close to the glacial Lake Karagöl (3100 m a.s.l.) on Bolkar Mountain, Taurus, located near Darbogaz, a small town in Ulukisla county, Nigde province. Etymology. The species name is derived from the Latin adjective algidus, meaning “cool”, referring to the fact that “the climate of the region is generally cool and rainy in summer, cold and snowy in winter” (Kolayli & Sahin, 2007). Description. Male. Average length of preserved material (4 males examined), measured from the anterior margin of the head to the tip of the cercopods, 11.5 mm. Thoracic and abdominal somites unadorned. First antennae (Fig. 5 G) thin and straight, ending in a claviform apex bearing three long distal setae enlarged proximally and 11 thin apical aesthetascs. Second antennae (Figs. 5 D–F; 13 a–b; 15 C–D): proximal antennomere cylindrical with parallel margins, rather bent medially; somewhat shorter than the distal antennomere, it bears a robust conical apophysis half the length of the proximal antennomere, with a convex apex covered with very small denticles (Fig. 5 E). Distal antennomere thin, bent almost at a right angle in its enlarged proximal part, then straight to the apex. A rather straight, thin apophysis tapering towards its end and adorned with several tiny sharp denticles arises on the medio-basal margin (Fig. 5 F; 13 b). Lower lamella (Fig. 5 B) bilobed, as long as the upper lamella; the greater lobe is rounded, with some short lobes and tubercles on its margin; the other lobe, triangular in shape, also bears lobes and small marginal tubercles, and exhibits a small carina dorsally (Figs. 15 A–B; E). Upper lamella (Fig. 5 A) characterized by numerous thin finger-like expansions on its margins; these expansions gradually taper towards the tip, and those on the medial margin are much more developed than those of the opposite side. The finger-like expansions are peculiar because of the presence of very small sharp denticles densely arranged on the margin (Fig. 5 C). Labrum also seems characteristic in this species (Figs. 6 A–B): the centro-ventral distal process is bilobed, a feature which, to our knowledge, has never been recorded in Chirocephalus. Mandibles (Figs. 6 G–F) asymmetrical. Right mandible: posterior tip of the molar surface provided with eight projections differing from each other. Left mandible: molar surface bearing a row of 8 teeth differing in size. First pair of maxillae adorned as illustrated in Fig. 6 D, also bearing a “posterior ventral spine” (Alonso & Jaume, 1991) of characteristic length and shape. Thoracic appendages: notopods of the first pair (Figs. 7 A–B; D–E) with a peculiarly featured endopodite; in the notopods of the sixth and seventh pair (Figs. 7 J, C), the margins of the endites (Fig. 7 G) and endopodite (Fig. 7 L) bear projections (12 in the P 6 endopodite of this species) that differ in shape and size. Eleventh pair illustrated in Fig. 7 H. Gonopods typical of the species of the “ diaphanus ” group (Figs. 5 H; 13 c). The tip of the retractile portion (Fig. 5 I) almost straight. Cercopods slightly shorter than the last three metameres. Female. Length measured as for male: 11.6 mm. First antennae as in the male. Second antennae (Fig. 6 K) as long as the first pair; distal end pointed and curved. Labrum (Fig. 6 E) as described for the male, although the bifurcation of the centro-ventral distal process previously noted in the male seems even more marked. Mandibles as in the male, whereas the posterior ventral spine of the first maxillae (Fig. 6 C) is much more developed than in the male. Thoracopods. First pair of the endopodites differ from that of the male (Fig. 7 F). Moreover, the endites and endopodite of the sixth pair (Fig. 7 I) do not exhibit the same features described for the male. Last thoracic segment (Fig. 7 K) laterally bearing a pair of rounded expansions. Brood pouch thick and short (Fig. 6 J). Cyst morphology. Only one of the observed females had cysts in the ovisac: the morphology and size of the eggs (Fig. 13 d) seem particularly interesting in that, among the species of the “ diaphanus ” group, they resemble the situation in C. marchesonii. Indeed, the two species have a similar ecology, as they live in high mountain waters. Variability: the characters did not exhibit noteworthy variation among the specimens of the type series, apart from the different length measured. Affinities. This species belongs to the “ diaphanus ” group. Being characterized by the absence of fingerlike latero-basal protuberances of the upper lamella, it is included in the list of species previously mentioned in the discussion of C. tauricus. The shape and size of the male antenna were discussed previously. In this regard, the distal article of the appendage tapers distally towards the apex, thus appearing much closer to C. neumanni than to C. tauricus. The basal apophysis of this article, quite elongated and narrow, straight and dentate, is characteristic; it somewhat resembles the corresponding apophysis of C. neumanni, although the latter is larger and distally bent. The apophysis of the basal article of the antenna resembles that of C. skorikowi in its proportions, and partly that of C. appendicularis in its shape, although it is smaller. The upper lamella conforms well to the already described pattern, in that all of the previously discussed species exhibit finger-like expansions on the medial margin that are markedly more developed than those ornamenting the opposite margin. Apart from this, the appendage, being somewhat longer than the lower lamella, is closest to the corresponding ones of C. marchesonii and C. skorikowi. The lower lamella of the antennal process exhibits a small carina located in a peculiar position, which is characteristic and exclusive of the species described here. The shape of this carina resembles that of C. weisigi (proportionally much larger) and somewhat less that of C. marchesonii (cf. Cottarelli & Mura, 1983). Similar upper lamellae can be observed in C. appendicularis and C. tauricus, although they lack a carina. In C. neumanni, the lower lamella has a slight keel (or carina), but the shape and size of this appendage differ from those observed in the new species. The morphology of the eversible part of the gonopods (cyrrus), i.e. narrow and thin, and ornamented by tiny denticles, seems to be unique to this species. The females of C. algidus sp. nov. do not show peculiar ornamentations; the ovisac is very short and does not reach the length of the two subsequent somites. Similar characteristics can be seen only in C. tauricus, which has a somewhat longer ovisac although different in shape, and in C. marchesonii, in which the ovisac differs in shape but has a similar size.Published as part of Cottarelli, Vezio, Aygen, Cem & Mura, Graziella, 2010, Fairy shrimps from Asiatic Turkey: Redescription of C hirocephalus tauricus Pesta, 1921 and descriptions of C hirocephalus algidus sp. nov. and C hirocephalus brteki sp. nov. (Crustacea, Branchiopoda, Anostraca), pp. 29-52 in Zootaxa 2528 on pages 36-41, DOI: 10.5281/zenodo.19647
FIGURE 4. Chirocephalus tauricus, A, C–J female, B, K male. A in Fairy shrimps from Asiatic Turkey: Redescription of C hirocephalus tauricus Pesta, 1921 and descriptions of C hirocephalus algidus sp. nov. and C hirocephalus brteki sp. nov. (Crustacea, Branchiopoda, Anostraca)
No full textFIGURE 4. Chirocephalus tauricus, A, C–J female, B, K male. A. ovisac; abdominal somites and cercopods, lateral; B. basal penes; C. female abdominal somites, dorsal; D–I, J. enlarged details of the verruciform outgrowths ornamenting the latero-posterior margin of the abdominal somites; H. compound eye, first and, second antenna; K. detail of male cercopods.Published as part of Cottarelli, Vezio, Aygen, Cem & Mura, Graziella, 2010, Fairy shrimps from Asiatic Turkey: Redescription of C hirocephalus tauricus Pesta, 1921 and descriptions of C hirocephalus algidus sp. nov. and C hirocephalus brteki sp. nov. (Crustacea, Branchiopoda, Anostraca), pp. 29-52 in Zootaxa 2528 on page 35, DOI: 10.5281/zenodo.19647
Chirocephalus brteki Cottarelli, Aygen & Mura, 2010, sp. nov.
No full textChirocephalus brteki sp. nov. Figs. 8–11; 14; 15 Material examined. 1 3 1 ovigerous Ƥ; Cem Aygen leg. 08/04/ 2005 Type series. Holotype: the only male, partly dissected and mounted in polyvinyl-lactophenol on 8 slides marked Chirocephalus brteki holotype male and numbered from 1 to 8. Allotype: the female, partly dissected and mounted in polyvinyl-lactophenol on 3 slides marked Chirocephalus brteki allotype female and numbered from 1 to 3. The slides are deposited in the Museum of Faculty of Fisheries, Ege University, Izmir-Turkey, registration number ESFM-BRN/05- 1. The undissected parts of both the holotype and paratype were used for SEM preparation and are stored in the collection of G. Mura, Dept. of Animal and Human Biology, University of Rome “La Sapienza”. Type locality. Lake Alan (Alan Gölü) (38 ° 41 ’ 13 ”N 27 ° 10 ’ 43 ”E), 600 m a.s.l., is a shallow lake near Bozalan village in the Menemen area (Izmir county). Although very small (surface area 0.5 ha, 1.5 m maximum depth), this basin never dries up completely. Etymology. We are pleased to dedicate the new species to the late Dr. Jàn Brtek as a sign of appreciation for his numerous and important contributions to the study of Anostraca. Description. Male. Length of preserved material 12.6 mm. Thoracic and abdominal somites unadorned. First antennae (Fig. 8 C) approximately as long as the first antennomere of the second antennae, with claviform tip, provided with three long sub-apical setae and 10 apical aesthetascs. Second antennae (Fig. 8 B; Fig. 14 a–c) short and strong. The first antennomere (Fig. 15 G), longer than the second, is cylindrical and bent medially; proximally, it bears a well developed cylindro-conical apophysis, half as long as the antennomere. The apophysis ends in an apex densely covered by denticles. The second antennomere is strong, falciform, bent medially and exhibiting on its medial margin a hook-like expansion at one-third of its length. On the inner margin, a conical, pointed apophysis bearing a few tubercles on its surface arises near the origin of this antennomere and is one-sixth the length of the antennomere. Lower lamella (Fig. 8 A) small and triangular, without a carina, with lobes and tubercles along the margins and on the surface; latero-proximally, there are four finger-like expansions more markedly developed than the remaining ones, giving the lamella an asymmetrical appearance.Upper lamella (Figs. 8 E–D) long, narrow and pointed, bearing on each side a series of numerous, almost similar digitiform expansions decreasing in size toward the pointed apex. On its lateral margin, there is a group of three-four robust, much more developed digitiform expansions. Labrum (Figs. 9 A–C) characterized by the shape of the ventral distal process and by the presence and position of three groups of longer setae. Mandibles asymmetrical (Figs. 14 d–f). Right mandible: molar surface bearing, at its posterior tip, three pointed projections of the same length. Left molar surface provided with 8 stout teeth differing in size on the lateral outer margin. First pair of maxillae could not be observed.in the sole male available for study. Thoracopods: notopods of the first, sixth and eleventh pair are illustrated (Figs. 10 A–C). The feature of the endopodites of the first and eleventh pair, the first in particular, is characteristic; the margins of those of the sixth and seventh pair do not exhibit the projections observed in the two previously described species. Gonopods. The apophyses of the basal gonopods are wide and short (Fig. 10 E). Apical part of the retractile part of the gonopods (Fig. 10 D) curved and ending in three tiny tubercles. Cercopods longer than the last three metameres. Female: length measured as in the male:12.3 mm. First antennae and oral appendages as in the male. Second antennae (Figs. 9 B; 15 I), seen dorsally, roughly elliptical and ending in a thin apex bent upwards, slightly longer than half the length of the first pair. Labrum and notopods as described in the male. Thoracic segments. Eighth to eleventh provided with latero-dorsal bulges, varying in shape and size depending on the metamere (Figs. 11 A, C). Their number also differs: there are five in the eighth, four in the ninth, two very small in the tenth, and two large and spherical in the eleventh. The eleventh somite also presents two large tubercles on each side (Fig. 11 D). Brood pouch oval (Fig. 11 B and 15 H), roughly reaching the distal margin of the third abdominal somite. Cercopods, as in the male, longer than the last three abdominal somites. Cyst morphology. The morphology of the cysts (Fig. 14 g) is peculiar and markedly differs from any of the previously examined Chirocephalus species (35 of the 49 known, see Mura, 2001), either in the “ diaphanus ” group or in the remaining ones. The surface of the cysts appears somewhat “reticulated” due to the presence of low intersecting ridges. Affinities. We hesitated for a long time before proposing Chirocephalus brteki sp. nov. since, having only two specimens, we did not have information on the constancy or variability of the considered characters. Our decision to propose the new species was based on the fact that such characters are constant in other species of the same group recently described by us. We hope that the discovery of other material will allow us to supplement the present description. Based on the discussed characters, the new species can certainly be ascribed to the “ bairdi ” species group (Brtek, 1995), presently including another seven species and one subspecies: Chirocephalus bairdi (Brauer, 1877); C. kerkyrensis (Pesta, 1936); C. brevipalpis (Orghidan, 1953); C. orghidani Brtek, 1966; C. vornatscheri Brtek, 1968; C. vornatscheri bulgaricus Flossner, 1980; C. murae Brtek & Cottarelli, 2006; C. anatolicus Cottarelli, Mura & Özkütük, 2007. (For further details on the species group, see Brtek & Cottarelli, 2006). The second antennae of the males conform to a pattern quite common to all of the species of the group; the distal article of these appendages, with a relatively small basal apophysis and some tubercles, resembles those seen in C. kerkyrensis and C. murae, and to a lesser degree the corresponding structure of C. bairdi. However, this article is bent in the above three species but not in the new species. Likewise, the ratio between the length of the distal portion from the hook-like expansion to the apex and the length of the entire article is different. The apophysis of the basal article of the antenna is claviform and twice as long as the distal one. Because of these features, the new species is closest to C. kerkyrensis and most distant from C. brevipalpis. C. brteki sp. nov. is characterized by an upper lamella longer than the lower lamella and by three digitiform latero-basal expansions: a similar morphology can be seen in C. kerkyrensis (cf. Cottarelli 1965), C. brevipalpis and C. murae. C. brteki sp. nov. clearly differs from the remaining species of the group by the peculiar pattern of the lower lamella, very unlike what is observed in the other taxa of the “ bairdi ” group. In fact, many species of the group (C. kerkyrensis, C. vornatscheri, C. orghidani, C. murae, C. anatolicus) have a lower lamella more or less markedly divided into two lobes. The structure of the rigid part of the gonopods (particularly wide and short) is another discriminant feature: in this regard, C. vornatscheri and C. brevipalpis are closest to the new species, in that C. murae, C. anatolicus and C. kerkyrensis have a much narrower and longer rigid part of the gonopods. The eversible portion differs from the corresponding one in C. murae, being narrower and longer, whereas in C. anatolicus it is bent almost at a right angle at its apex. No description is available for the other taxa of the group. As regards the particular ornamentation on somites VIII–XI in the female of C. brteki, it can be noted that many other species of this group are characterized by ornamented thoracic, genital or abdominal metameres(cf. Brtek & Cottarelli, 2006; Cottarelli et al., 2007). However, each one, including the new species, can easily be recognized by its exclusive pattern. In its shape and pattern, the brood pouch resembles that of C. kerkyrensis and seems slightly longer and more tapering than those of C. murae and C. anatolicus. Remarks. Besides increasing our knowledge of the biodiversity of these interesting crustacean groups, the recognition of the two new species described herein contributes to a better understanding of the distribution of these taxa, in particular the Chirocephalu s species of the “ bairdi ” group. Given their abundance in that area, Turkey seems to be their favourite habitat. It is true that information about the distribution of Anostraca in Asia Minor (and even in Turkey) is still far from complete; nonetheless, Asiatic Turkey can be considered a possible centre of origin and dispersion of the members of the “ bairdi ” group. In addition to morphological characters, Chirocephalus algidus sp. nov. seems to share with the remaining species of the subgenus Chirocephalellus (Ruffo & Vesentini, 1957) an especial preference for high level pools and an eastern distribution. Hence, future research may enable us to define a new species group based on ecological requirements in addition to morphological features. In the two new species, we considered additional characters introduced previously (Brtek & Cottarelli, 2006; Cottarelli et al., 2007), with the aim of finding new discriminant features that allow quick and easy identification of the taxa. The taxonomic importance of such characters as the morphology of the labrum, Mx 1 and Mx 2 of both sexes must be regarded as in need of further support due to the small number of specimens available for study. In contrast, the diagnostic value of the shape and size of the apical setae and of the sensilli of the first antennae is confirmed, since these characters do not vary within the single species. Further support of this conclusion comes from the results of an ongoing study on a large number of Italian populations of Chirocephalus diaphanus diaphanus. The same holds for the sexual dimorphism noted in the endopodites of the sixth pair (but not only in this pair) of all of the species of the “ diaphanus ” group thus far examined. In this case, the differences between males and females are constant within a species, again confirmed by the large number of C. diaphanus diaphanus populations under study. We conclude by considering another important aspect: the increasing loss of biodiversity. As stated by Naiman (2008), “this is a critical time for organisms living in continental waters”; very many scientists dealing with continental water faunas throughout the world are stressing the risk of extinction faced by colonizers of such habitats. Living in fragile and sensitive habitats like temporary waters, small high level water bodies, etc., Anostraca are particularly endangered, and many species and populations have already disappeared due to various factors (Petrov & Petrov, 1997; Belk, 1998; Mura, 1999; Eder & Hödl, 2002; IUCN Red Data Book). Finding and describing new species is undoubtedly a great satisfaction, but this feeling is frustrated by the doubt that while describing a species we may, at the same time, be writing its obituary.Published as part of Cottarelli, Vezio, Aygen, Cem & Mura, Graziella, 2010, Fairy shrimps from Asiatic Turkey: Redescription of C hirocephalus tauricus Pesta, 1921 and descriptions of C hirocephalus algidus sp. nov. and C hirocephalus brteki sp. nov. (Crustacea, Branchiopoda, Anostraca), pp. 29-52 in Zootaxa 2528 on pages 41-51, DOI: 10.5281/zenodo.19647
Eucypris mareotica Fischer 1855
No full textRedescription of Eucypris mareotica (Fischer, 1855) Class Ostracoda Latreille, 1802 Subclass Podocopa G. O. Sars, 1866 Order Podocopida G. O. Sars, 1866 Suborder Cypridocopina Jones, 1901 Superfamily Cypridoidea Baird, 1845 Family Cyprididae Baird, 1845 Subfamily Eucypridinae Bronshtein, 1947 Genus Eucypris Vávra, 1891 Diagnosis (slightly modified from Meisch 2000). Carapace approximately elliptical in lateral view. External valve surface anteriorly usually with wart-like elevations (porenwarzen). Valve margins smooth, without rows of marginal pustules. Ventral margin with rounded expansion in mouth area. Calcareous inner lamella of both valves broad; anterior vestibulum c. 12 times as long as W of fused zone. Selvage, if present, peripheral. LV overlaps RV ventrally. Maxillular palp: distal segment cylindrical and curved, c. twice as long as basally broad. Walking leg: d1- seta of protopod c. three times as long as d2. Chitinous attachment of UR proximally simply branched, without Triebel loop. Distribution. Worldwide. Number of extant species: 65 (Martens & Savatenalinton 2011). TABLE Ι. List of sampleđ localities, with environmental đata anđ species collecteđ in 2011. NM — not measuređ.Published as part of Rasouli, Hamidreza, Scharf, Burkhard, Meisch, Claude & Aygen, Cem, 2016, An updated checklist of the Recent non-marine Ostracoda (Crustacea) of Iran, with a redescription of Eucypris mareotica (Fischer, 1855), pp. 273-292 in Zootaxa 4154 (3) on pages 275-276, DOI: 10.11646/zootaxa.4154.3.3, http://zenodo.org/record/27216
Contribution to the knowledge on the distribution of ostracoda (Crustacea) species of anatolia with some ecological notes
No full textBu çalışma, Anadolu tatlısu ostrakod faunası dağılımlarına bazı ekolojik bilgilerle katkı vermek amacıyla 31 Ağustos 2010 ile 23 Haziran 2011 tarihleri arasında yapılmıştır. Örnekleme yapılan istasyonlarda türler ve ortam şartları arasındaki ilişkinin belirlenmesi ve verilerin değerlendirmesi amacıyla her istasyonda pH, tuzluluk (?), çözünmüş oksijen (mg.l-1), oksijen doygunluğu (%), elektriksel iletkenlik (?S.cm-1) ve su sıcaklığı (ºC) gibi bazı fiziksel ve kimyasal veriler de saptanmıştır.Örnekleme sonucunda, toplam 47 istasyondan, 37 tatlısu ostrakod türü (Candona neglecta, Fabaeformiscandona fabaeformis, Pseudocandona eremita, P. albicans, Cypria ophthalmica, Ilyocypris gibba, I. monstrifica, I. bradyi, I. inermis, Cypris pubera, Eucypris virens, E. kerkyrensis, E. lilljeborgi, Koencypris ornata, Prionocypris zenkeri, Trajancypris serrata, T. clavata, Bradleystrandesia reticulata, Herpetocypris chevreuxi, H. helenae, H. intermedia, Psychrodromus olivaceus, P. fontinalis, Stenocypria fischeri, Stenocypris sp., Heterocypris incongruens, H. rotundata, H. barbara, H. salina, Hemicypris sp., Isocypris beauchampi, Cypridopsis vidua, C. elongata, Potamocypris variegate, P. unicaudata, P. smaragdina, P. villosa) bulunmuştur. Tespit edilen türlerden 3 tür E. kerkyrensis, C. elongata ve B. reticulata, Türkiye tatlısu ostrakoda faunası için yeni kayıttır. Bununla birlikte, Cypridoidae süperfamilyasından Hemicypris cinsi Türkiye'den ilk kez bildirilmektedir. Ayrıca, T. serrata, P. olivaceus ve I. inermis türlerinin eşeysel populasyonları Anadolu'dan ikinci kez bu çalışmada saptanmıştır.This study, was carried out from 31 August 2010 to 23 June 2011 to contribute on the knowledge of dispersal of Anatolian freshwater ostracoda?s species with some ecological information. To determine being correlation between environmental variables and ostracoda?s species, also to evaluate the data, physico chemical factors of stations, such as pH, Salinity (?), Disolved Oxygen (mg.l-1), Oxygen Saturation (%), Electrical Conductivity (?S.cm-1) and Water Temperature (oC) were measured during the sampling.At the result of this study 37 species of non-marine ostracoda (Candona neglecta, Fabaeformiscandona fabaeformis, Pseudocandona eremita, P. albicans, Cypria ophthalmica, Ilyocypris gibba, I. monstrifica, I. bradyi, I. inermis, Cypris pubera, Eucypris virens, E. kerkyrensis, E. lilljeborgi, Koencypris ornata, Prionocypris zenkeri, Trajancypris serrata, T. clavata, Bradleystrandesia reticulata, Herpetocypris chevreuxi, H. helenae, H. intermedia, Psychrodromus olivaceus, P. fontinalis, Stenocypria fischeri, Stenocypris sp., Heterocypris incongruens, H. rotundata, H. barbara, H. salina, Hemicypris sp., Isocypris beauchampi, Cypridopsis vidua, C. elongata, Potamocypris variegate, P. unicaudata, P. smaragdina, P. villosa) were found from 47 stations. Of these, three species E. kerkyrensis, C. elongata ve B. reticulata, were the newly recorded for the freshwater ostracod fauna of Turkey. Meanwhile, genus Hemicypris belonging to the superfamily Cypridoidae was added to the non-marine ostracoda of Turkey. In the current study, bisexual populations of T. serrata, P. olivaceus and I. inermis were also recorded for the second time from Anatolia
Anadolu'nun Ostracoda (Crustacea) türlerinin dağılımlarına bazı ekolojik notlar ile katkıları
No full textBu çalışma, Anadolu tatlısu ostrakod faunası dağılımlarına bazı ekolojik bilgilerle katkı vermek amacıyla 31 Ağustos 2010 ile 23 Haziran 2011 tarihleri arasında yapılmıştır. Örnekleme yapılan istasyonlarda türler ve ortam şartları arasındaki ilişkinin belirlenmesi ve verilerin değerlendirmesi amacıyla her istasyonda pH, tuzluluk (‰), çözünmüş oksijen (mg.l-1), oksijen doygunluğu (%), elektriksel iletkenlik (μS.cm-1) ve su sıcaklığı (°C) gibi bazı fiziksel ve kimyasal veriler de saptanmıştır. Örnekleme sonucunda, toplam 47 istasyondan, 37 tatlısu ostrakod türü (Candona neglecta, Fabaeformiscandona fabaeformis, Pseudocandona eremita, P. albicans, Cypria ophthalmica, Ilyocypris gibba, I. monstrifica, I. bradyi, I. inermis, Cypris pubera, Eucypris virens, E. kerkyrensis, E. lilljeborgi, Koencypris ornata, Prionocypris zenkeri, Trajancypris serrata, T. clavata, Bradleystrandesia reticulata, Herpetocypris chevreuxi, H. helenae, H. intermedia, Psychrodromus olivaceus, P. fontinalis, Stenocypria fischeri, Stenocypris sp., Heterocypris incongruens, H. rotundata, H. barbara, H. salina, Hemicypris sp., Isocypris beauchampi, Cypridopsis vidua, C. elongata, Potamocypris variegate, P. unicaudata, P. smaragdina, P. villosa) bulunmuştur. Tespit edilen türlerden 3 tür E. kerkyrensis, C. elongata ve B. reticulata, Türkiye tatlısu ostrakoda faunası için yeni kayıttır. Bununla birlikte, Cypridoidae süperfamilyasından Hemicypris cinsi Türkiye'den ilk kez bildirilmektedir. Ayrıca, T. serrata, P. olivaceus ve I. inermis türlerinin eşeysel populasyonları Anadolu'dan ikinci kez bu çalışmada saptanmıştır
Gammarus izmirensis sp. nov., a new species of freshwater amphipod from Turkey (Amphipoda, Gammaridae)
No full textA new species of freshwater amphipod, Gammarus izmirensis sp. nov., belonging to the Gammarus pulex-group, is described. Specimens have been collected from a stream in the Kemalpaşa district, İzmir province, western Anatolia. A detailed morphological description and illustrations of the new species are given. Differences between the new species and related species are discussed. © 2007 Brill Academic Publishers.95/SÜF/08The author wishes to thank Dr. Cem Aygen for his help during the field work. The present study was supported by Ege University Research Fund (Grant No. 95/SÜF/08). -
Işıklı Gölü (Çivril-Denizli) crustacea faunası üzerine araştırmalar
No full textBu çalışmada, Işıklı Gölü Crustacea faunasının taksonomik açıdan incelenmesi hedeflenmiştir. Bu amaçla Şubat 1998-Ocak 1999 ayları arasında, gölde ve göle akan kaynak bölgesinde belirlenen 6 istasyondan aylık periyotlarla biyolojik örnekler ve su örnekleri alınmıştır. Araştırma sonunda Işıklı Gölü ve Kaynağıʼnda bulunan Crustacea faunasının başlıca Cladocera (16 tür), Copepoda (12 tür), Ostracoda (1 tür), Amphipoda (2 tür), Isopoda (1 tür), Mysidacea (1 tür) ve Decapoda (1 tür) gruplarından oluştuğu saptanmıştır. Tespit edilen türlerden Cladocera grubundan Diaphanosoma brachyurum, Diaphanosoma mongolianum, Ceriodaphnia pulchella, Simocephalus vetulus, Macrothrix laticornis, Alona rectangula, Alona guttata, Graptoleberis testudinaria, Leydigia leydigi, Biapertura affinis, Chydorus sphaericus, Pleuroxus aduncus ve Disparalona rostrata; Copepoda grubundan Macrocyclops albidus, Eucyclops serrulatus, Eucyclops speratus, Eucyclops macruroides, Metacyclops gracilis, Mesocyclops leuckarti, Cyclops vicinus, Cyclops abyssorum, Cyclops strenuus, Megacyclops viridis, Acanthocyclops robustus, Canthocamptus staphylinus; Ostracoda grubundan Psychrodromus olivaceus; Amphipoda grubundan Gammarus balcanicus, Gammarus obnixus; Isopoda grubundan Asellus aquaticus türleri Işıklı Gölüʼnden ilk kez bildirilmektedir. Araştırma süresince Işıklı Gölüʼnde berraklığın 80-440 cm.; su sıcaklığının 5.4-28.5⁰C; pHʼnın 7.49-9.25; çözünmüş oksijenin 5.6-13.6 mg/l; elektrik iletkenliğinin 174-623 S20⁰C; geçici sertliğin 7.5-26.5 Fr⁰H; kalsiyum ve magnezyum iyonlarının sırasıyla 8.01-128.30 mg/l ve 14.59-116.70 mg/l değerleri arasında değişim gösterdiği tespit edilmiştir. Besleyici elementlerden olan nitrit azotu (NO2 - -N) en fazla 23.66 g/l; nitrat azotu (NO3 - -N) 0.36-991.2 g/l değerleri arasında; amonyum (NH4 + -N) en fazla 413 g/l; fosfat (PO4 -3 P) en fazla 60.45 g/l; silikat ise en fazla 4.82 mg/l olarak saptanmıştır. Tespit edilen su kalitesi parametreleri “Kıtaiçi Su Kaynaklarının Sınıflarına Göre Kalite Kriterleri” ile karşılaştırıldığında Işıklı Gölüʼnün II. sınıf kıtaiçi sular kategorisine girdiği anlaşılmaktadır
Diversity of micro-crustaceans in temporary habitats of the province of Sasali (Izmir, Turkey)
No full textA study on the distribution of micro-crustaceans in seven temporary habitats of the province of Sasali (Izmir) was conducted between 27 March and 10 April 2011. 15 micro-crustacean species, comprising eight ostracods, four branchiopods and three copepods were identified. All species registered represent new reports for the studies area. One of these, living populations of Heterocypris barbara var. barbara is recorded for the first time. The highest number of species per site was nine, with the most frequent species being Daphnia (Ctenodaphnia) magna (Cladocera) and Eucypris virens (Ostracoda). Our results highlight the importance of temporary habitats as potential biodiversity hotspots, in spite of a few carried out by freshwater ecologists and taxonomists in undertaking scientific investigations in these environments
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