Gammarus tigrinus Sexton 1939 (Crustacea, Amphipoda) - a new immigrant in the Puck Bay, southern Baltic Sea

• Autorzy: Szaniawska A. , Normant M. , Łapucki T.
• Języki publikacji: EN

Abstrakty

EN

This study deals with the occurrence and migration of Gammarus tigrinus Sexton 1939 into the Puck Bay (western part of the Gulf of Gdansk, Baltic Sea). The material was collected in September 2002 at nine stations (approximate depth – 0.4 m). The only Gammarus species found at five sampling stations was G. tigrinus. The species found at other stations located along the inner part of the Puck Bay were G. salinus, G. zaddachi, and G. duebeni. The sex ratio for G. tigrinus was close to 1. Almost 50% of the females were carrying eggs. The males were larger (6.0 š 0.8 mm) than females (4.7 š 0.8 mm). The average male dry weight was 2.5 š 1.2 mg and that of females was 2.1 š 0.7 mg. The relation between length (L) and dry weight (DW) was DW = 0.095źL1.76 (R2 = 0.76). This study indicates that G. tigrinus is spreading rapidly in the Baltic Sea.

Słowa kluczowe

EN

Gammarus tigrinus; non-native species; Baltic Sea; Poland

• Wydawca: Institute of Oceanography University of Gdańsk
• Czasopismo: Oceanological and Hydrobiological Studies
• Rocznik: 2005
• Tom: Vol. 34, No.2
• Strony: 71--78
• Opis fizyczny: Bibliogr. 29 poz., tab., wykr.

Twórcy

autor

Szaniawska A.

• Institute of Oceanography, University of Gdansk, Al. Marszalka Pilsudskiego 46, 81-387 Gdynia, Poland

autor

Normant M.

• Institute of Oceanography, University of Gdansk, Al. Marszalka Pilsudskiego 46, 81-387 Gdynia, Poland

autor

Łapucki T.

• Institute of Oceanography, University of Gdansk, Al. Marszalka Pilsudskiego 46, 81-387 Gdynia, Poland

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