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    DESCRIPTION OF GLOCHIDIA OF THREE SPECIES OF FRESHWATER MUSSELS (UNIONIDAE) FROM SOUTHEASTERN TURKEY
    (Inst Malacol, 2009) Sereflisan, Huelya; Sereflisan, Menderes; Soylu, Soner
    [Abstract Not Available]
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    The gastropod fauna and their abundance, and some physicochemical parameters of Lake Golbasi (Hatay, Turkey)
    (Tubitak Scientific & Technological Research Council Turkey, 2009) Sereflisan, Hulya; Yildirim, M. Zeki; Sereflisan, Menderes
    An investigation was carried out on the native gastropod species in Lake Golbasi, Hatay During the research 3 species belonging to the subclass Pulmonata (Gyraulus piscinarum, Radix labiata, Amsus leucostoma) were detected along with 9 species of the subclass Orthogastropoda (=Prosobranchia) including Theodoxus jordani, Semisalsa contempta, Semisalsa longiscata, Bithyma phialensis, Valvata saulcyi, Valvata piscinalis, Melanoides tuberculatus, Melanopsis praemorsa ferussaci, Melanopsis costata costata. These gastropod species were collected from 4 stations chosen in the lake. Furthermore, turbidity, dissolved oxygen, pH, and temperature were measured at the sampling sites
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    HISTOLOGICAL STUDIES ON GAMETOGENESIS, HERMAPHRODITISM AND THE GAMETOGENIC CYCLE OF ANODONTA GABILLOTIA PSEUDODOPSIS (LOCARD, 1883) IN THE LAKE GOLBASI, TURKEY (BIVALVIA: UNIONIDAE)
    (Natl Shellfisheries Assoc, 2009) Sereflisan, Huelya; Cek, Sehriban; Sereflisan, Menderes
    This study describes the seasonal reproductive cycle, gonad structure, and sex ratio of the Anodonta gabillotia pseudodopsis. A total or 300 individuals was collected in monthly samples from September 2005 to August 2006 in Golbasi Lake, Turkey. Calculation of the gonadosomatic index and histological examination of the gonads showed that gametogenesis began in winter and spawning occurred in summer and early autumn. Although, Sex ratios or Anodonta gabillotia pseudodopsis were not significantly different from the expected 1: 1 ratio (p > 0.05). slightly female biased sex ration were recorded. Although mature oocytes and spermatozoa were present for almost the entire year, gonadal activity seemed lowest in October and December, when gonad recovery and reorganization were more evident than gametogenesis. Both sexes displayed greatest gonad activity during the summer months of the year. Three types of gonads were identified, which varied according to the proportion of gametogenic tissue. According to our morphologic and histologic observation, Anodonta gabillotia pseudodopsis were classified as accidental or abnormal hermaphrodite (typically in dioecious species) species. The hermaphroditic specimens of A. pseudodopsis had gonads composed predominately of tissue of only female. These results suggest that under certain environmental conditions females may become hermaphrodites and self-fertilization occur.
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    The Reproductive Cycle of Potomida littoralis (Cuvier, 1798) (Bivalvia: Unionidae) in Lake Golbasi, Turkey
    (Zoological Soc Pakistan, 2013) Sereflisan, Hulya; Cek, Sehriban; Sereflisan, Menderes
    In this work, reproductive cycle of Potomida littoralis, including histological description and indices of gonad maruration were investigated. There is no data previously available on the species. A total of 300 individuals were monthly collected from September 2009 to August 2010 in Golbasi Lake, Turkey. P. littoralis is dioecious and although males tended to predominate, the sex ratio was not significantly different from the expected 1:1 ratio (p > 0.05). Calculation of the condition index (CI), gonadosomatic index (GSI) and histological examination of the gonads showed that gametogenesis began in January. Spawning occurred in June. Annual maximum GSI value peaked in May. A decrease of CI was observed during gametogenesis. When mussels had the highest GSI value, CI was the lowest value. This results suggest that gametogenesis and reproductive cycle are the key factor in mussels physiology and important for captive breeding/artificial mussels production and conservation status (e.g. When to obtain gravid females, when to relocate, when to restock, when to introduce fish host, when not to allow harvesting).