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Vasil'eva E.D.,Moscow State University | Medvedev D.A.,RAS A.N. Severtsov Institute of Ecology and Evolution | Chi T.T.L.,Russian Vietnamese Tropical Research and Technological Center | Prazdnikov D.V.,RAS A.N. Severtsov Institute of Ecology and Evolution | And 3 more authors.
Journal of Ichthyology | Year: 2013

We performed the first large-scale study of the species structure of the fishes living in the inland water bodies of Phu Quoc Island and identified 97 species of bony fishes, which represent 41 families of 13 orders. Taking into account the results of earlier studies, we compiled a total checklist of the island's ich-thyofauna, which includes 99 species; one more species recorded in a previous publication on the ichthyo-fauna of the island can be added to this number, as well as 15-20 mostly euryhaline species, which needed clarification of their states. Only one species on the checklist, Oreochromis niloticus, has been introduced to the island; 14 species, mostly of the family Gobiidae, have never been recorded in the faunas of other regions of Vietnam. Two new species, probably endemic to the island, have been found and described (in the genera Rasbora and Barbucca). Two more species of the order Siluriformes should probably also be described as new. © 2013 Pleiades Publishing, Ltd. Source


Pavlov D.A.,Moscow State University | Emel'yanova N.G.,Moscow State University | Thuan L.T.B.,Russian Vietnamese Tropical Research and Technological Center | Ha V.T.,Russian Vietnamese Tropical Research and Technological Center
Journal of Ichthyology | Year: 2011

Features of reproductive biology and the stages of early ontogeny are described in the mass tropical species manybar goatfish Parupeneus multifasciatus. In general, in the catches represented by mainly sexually mature fishes, females prevail but males prevail in the largest size classes. The females reach their first sexual maturity by approximately 110 mm fork length, and they are characterized by continuous oogenesis and egg deposition in batches. The fish spawn over the entire year with a trend to lower values of the gonadosomatic index (GSI) of the females from June to October. The features of early ontogeny are compared in manybar goatfish and red mullet Mullus barbatus ponticus from the Black Sea. © 2011 Pleiades Publishing, Ltd. Source


Emel'yanova N.G.,Moscow State University | Pavlov D.A.,Moscow State University | Pavlov E.D.,RAS Severtsov Institute of Ecology | Thuan L.T.B.,Russian Vietnamese Tropical Research and Technological Center | Ha V.T.,Russian Vietnamese Tropical Research and Technological Center
Journal of Ichthyology | Year: 2014

We describe anomalies in oocyte structure of manybar goatfish Parupeneus multifasciatus from the coastal zone of southern Central Vietnam. The anomalies are registered in the majority of cells (>80%) from ovarian fragments of several individuals. The abnormal cells are at the periods of maturation, vitellogenesis, and, sometimes, previtellogenesis. Possible effect of pollutants on oocyte morphology is discussed. © 2014 Pleiades Publishing, Ltd. Source


Pavlov D.A.,Moscow State University | Emel'yanova N.G.,Moscow State University | Thuan L.T.B.,Russian Vietnamese Tropical Research and Technological Center | Ha V.T.,Russian Vietnamese Tropical Research and Technological Center
Journal of Ichthyology | Year: 2014

Features of reproduction are described in the tropical representative of the family Mullidae freckled goatfish Upeneus tragula from southern Central Vietnam (Nha Trang Bay) and North Vietnam (Ha Long Bay). Sex ratios of the fishes (females: males) in Nha Trang and Ha Long bays are 0.93: 1 and 1.2: 1, respectively. In both bays, the body length-body weight relationship is not substantially different between the females and males. In Nha Trang Bay, the females reach sexual maturity by 10.2 cm fork length (50% of individuals), and the fishes spawn over the entire year. In a part of the population (on average, 23.5% of fishes), the interruptions in spawning not associated with a certain season of the year are registered. In Ha Long Bay, a distinct spawning interruption is observed in all fishes during winter. © 2014, Pleiades Publishing, Ltd. Source


Pavlov D.A.,Moscow State University | Emel'yanova N.G.,Moscow State University | Ha V.T.,Russian Vietnamese Tropical Research and Technological Center | Thuan L.T.B.,Russian Vietnamese Tropical Research and Technological Center
Journal of Ichthyology | Year: 2013

The growth of individuals is analyzed in the mass tropical species manybar goatfish Parupeneus multifasciatus from the Nha Trang Bay of the South China Sea. The relationship between the body weight and body length is determined for the females and males. Among the fishes larger 180 mm fork length (FL), the males prevail. Linear growth of the sagitta is characterized by negative allometry in relation to body length, and sagitta growth in length is faster than in width. Age of fish assessed based on the analysis of daily increments on the sagitta does not exceed three years, and the majority of individuals reach the first sexual maturity by the age of one year. The growth rate of the fish is characterized by a large individual variation. © 2013 Pleiades Publishing, Ltd. Source

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