Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 4

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
Wyszukiwano:
w słowach kluczowych:  gobies
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
EN
This is the first comprehensive review to examine the role of the central European invasion corridor on fish introductions into Belarusian and Polish inland waters (Dnieper-Bug-Vistula-Oder-Elbe-Spree-Havel). Historical and recent data were assessed, including the results of a 2003 - 2008 survey along the Belarusian and Polish sections of the corridor. Since the eighteenth century, at least six fish species of Ponto-Caspian origin have spread via the corridor and migrated westwards to the Baltic basin, with five species found in recent surveys, namely the monkey goby Neogobius fluviatilis, round goby N. melanostomus, racer goby N. gymnotrachelus, tubenose goby Proterorhinus marmoratus and the white eye-bream Abramis sapa. Four other non-native species were also found within the corridor - the Amur sleeper Perccottus glenii, gibel carp Carassius gibelio, brown bullhead Ameiurus nebulosus and the topmouth gudgeon Pseudorasbora parva. Their presence is related to numerous accidental introductions to many localities in Belarus and Poland, rather than from using the corridor as an invasion route. One species, the ninespine stickleback, Pungitius pungitius, has migrated from the Baltic basin to the Black Sea drainage systems.
EN
The aim of the present work was to investigate the helminth fauna of commercially caught gobiid fishes (Zosterisessor ophiocephalus, Neogobius melanostomus, N. fluviatilis, N. syrman) of the Budaksky Lagoon. The studied fish harbored nine parasite species that include three Holarctic species, one Euro-Siberian, one Cosmopolitan species, one Boreo-Atlantic species, one Mediterranean species, and two Ponto-Caspian ones. The most widespread species were: Cryptocotyle lingua, C. convacum, Acanthocephaloides propinquus. Two Ponto-Caspian cestod species: Proteocephalus gobiorum, Ligula pavlovskii are specific for gobiids. Possible reasons of the infection variability were discussed. Eight species of helminths have been recorded for the first time in the Lagoon.
EN
The round goby Neogobius melanostomus and the grass goby Zosterisessor ophiocephalus are most widespread fishes of the Tuzly?s group salty lagoons - Alibey and Burnas (North-Western part of the Black sea, Ukraine). The helminthofauna of these fishes consists of six species of parasites: Cryptocotyle lingua, C. concavum, Acanthocephaloides propinquus, Telosentis exiguus, Contracaecum microcephalum, and Cucullanellus minutus. Trematods of the genus Cryptocotyle, acanthocephalans A. propinquus, and larvae of nematods C. microcephalum are reported from this water area for the first time; the latter from gobies for the first time. The interrelation between infection of fishes and biology of helminthes and their host is discussed. This is the first study containing the complete information on the parasite fauna of the Lagoons.
EN
Feeding preferences of the round goby and mushroom goby from the Odessa Bay (areas with civil engineering works) were studied. Two goby species were observed to choose different dietary items in dependence of the season and place of fishery. The mushroom goby chose Nereis succinea more intensively than the round goby.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.