Wyniki wyszukiwania

1

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Palaemon elegans - a new component of the Gulf of Gdańsk macrofauna

100%

Janas U., Zarzycki T., Kozik P.

Oceanologia

|

2004

|

tom 46

|

nr 1

The present paper reports on the occurrence of the prawn Palaemon elegans Rathke in the coastal waters of the Gulf of Gdańsk in the years 2002–2003, and in other regions of the Baltic Sea as recorded by various authors.

2

Distribution and individual characteristics of the prawn Palaemon elegans [Crustacea, Decapoda] from the Gulf of Gdansk and the dead Vistula River

84%

Janas U.

Oceanological and Hydrobiological Studies

|

2005

|

tom 34

|

nr Suppl.1

3

Energy values and energy resources of two prawns in Baltic coastal waters: the indigenous Palaemon adspersus and the non-indigenous Palaemon elegans

67%

Janas U., Bruska O.

Oceanologia

|

2010

|

tom 52

|

nr 2

281-297

Until recently only two palaemonid species inhabited the southern Baltic: Palae- mon adspersus and Palaemonetes varians. Soon after the year 2000 a new species – Palaemon elegans – arrived and quickly established itself as a new component in the trophic web. The objects of this research were to define the energy value and energy resources of P. elegans and to compare them with the corresponding values for the native P. adspersus. These parameters will supply information about this new link in the trophic web and may help to explain the part played by the new prawn and its population in the energy flow. This work demonstrated that the energy values of both prawn species were very much the same: the average energy value of P. elegans was 16.5±2.1 J mg−1 DW (19.3 ± 2.5 J mg−1 AFDW) (N = 150), that of P. adspersus was 16.7 ± 2.1 J mg−1 DW (19.5 ± 2.5 J mg−1 AFDW) (N= 71). No statistically significant differences in energy value were found between the two species with respect to sex, size or season. The results show that P. elegans is an energetically valuable food item for predators. Its energy resources in Polish brackish coastal waters can be as high as 150 kJ m−2; the highest among the palaemonid species in this area, they constitute a rich supply of food for other organisms.

4

Body size and reproductive traits of Palaemon elegans Rathke, 1837 (Crustacea, Decapoda), a recent colonizer of the Baltic Sea

67%

Janas U., Mankucka A.

Oceanological and Hydrobiological Studies

|

2010

|

tom 39

|

nr 2

5

Seasonal variations in the occurrence of the prawns Crangon crangon [L., 1758], Palaemon adspersus [Rathke, 1837] and Palaemon elegans [Rathke, 1837] in the littoral zone of the Gulf of Gdansk

67%

Lapinska E., Szaniawska A.

Oceanological and Hydrobiological Studies

|

2005

|

tom 34

|

nr 2

6

What is the diet of Palaemon elegans Rathke, 1837 (Crustacea, Decapoda), a non-indigenous species in the Gulf of Gdańsk (Southern Baltic Sea)?

51%

Janas U., Baranska A.

Oceanologia

|

2008

|

tom 50

|

nr 2

221-237

Palaemon elegans, a new component of the Gulf of Gdańsk macrozoobenthos, colonised the southern Baltic coastal zone in the late 20th and early 21st century. Analysis of the stomach contents of P. elegans revealed 16 plant and animal taxa that these prawns had fed on. The principal dietary component was detritus, with a mean frequency of occurrence in stomachs of > 80%. The most frequently occurring plant components in the diet were algae from the genus Cladophora and the family Ectocarpaceae, while the most significant animal components were Harpacticoida, Chironomidae, Ostracoda and Gammarus spp. The results of the study show that the dietary composition of P. elegans differed significantly between stations and months. The foraging area consisted of two distinctive regions – the Inner Puck Bay, and the Outer Puck Bay together with the Dead Vistula River; two of the stations – Gdynia and Sopot – were distinct from all the others. However, no obvious seasonality in the food composition could be demonstrated.

Ograniczanie wyników

3 Oceanologia

3 Oceanological and Hydrobiological Studies

5 Janas U.

1 Baranska A.

1 Bruska O.

1 Kozik P.

1 Lapinska E.

1 Mankucka A.

1 Szaniawska A.

1 Zarzycki T.

2 2010

1 2008

2 2005

1 2004

Palaemon elegans - a new component of the Gulf of Gdańsk macrofauna

Distribution and individual characteristics of the prawn Palaemon elegans [Crustacea, Decapoda] from the Gulf of Gdansk and the dead Vistula River

Energy values and energy resources of two prawns in Baltic coastal waters: the indigenous Palaemon adspersus and the non-indigenous Palaemon elegans

Body size and reproductive traits of Palaemon elegans Rathke, 1837 (Crustacea, Decapoda), a recent colonizer of the Baltic Sea

Seasonal variations in the occurrence of the prawns Crangon crangon [L., 1758], Palaemon adspersus [Rathke, 1837] and Palaemon elegans [Rathke, 1837] in the littoral zone of the Gulf of Gdansk

What is the diet of Palaemon elegans Rathke, 1837 (Crustacea, Decapoda), a non-indigenous species in the Gulf of Gdańsk (Southern Baltic Sea)?