Environmental Preferences of Crangon Crangon (linnaeus, 1758), Palaemon Adspersus Rathke, 1837, And Palaemon Elegans Rathke, 1837 in the Littoral Zone of the Gulf of Gdánsk

Szaniawska, Anna; Lapinska, E.

doi:10.1163/156854006778026799

Cited by 22 publications

(11 citation statements)

References 17 publications

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“…However, by the beginning of the 21 st century the species had colonized the southern Baltic (Janas et al 2004, Łapińska and Szaniawska 2005, Grabowski 2006, Ezhova 2009) and is continuing to move eastwards and northwards (Lavikainen andLaine 2004, Daunys andZettler 2006, Väinola pers. com.…”

Section: Introductionmentioning

confidence: 99%

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

Janas

Mańkucka

2010

Oceanological and Hydrobiological Studies

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Palaemon elegans is a species of prawn new (since 2000) to the southern Baltic. The aim of this study was to find out whether there are differences in the sizes of individuals and in the reproductive traits of P. elegans inhabiting different areas of the southern Baltic Sea and to compare the data obtained with existing data for populations from other coastal areas. The present study was carried out in the summers of 2005 and 2007 in three areas differing in their hydrological conditions (primarily in salinity): Puck Bay (PB), the Vistula Delta (VD) and the Vistula Lagoon (VL), Poland. The maximum body lengths of these prawns (females = 60 mm, males = 41 mm), and body masses (1201 mg and 533 mg respectively) found in the southern Baltic were less than those reported from many other parts of the geographical range of this species. The increase in body mass with length was the smallest in the prawns inhabiting VL, and the maximum lengths they grew to were also shorter (females -52 mm and males -39 mm) than in PB. The numbers of eggs carried by P. elegans in the southern Baltic were smaller than those found in females in its native regions. Differences were also found in the numbers and sizes of eggs between prawns inhabiting different locations in the southern Baltic. It was concluded that the low salinity of the southern Baltic Sea (even below 7 PSU), while not preventing this prawn from reproducing, caused a shift to the production of fewer but larger eggs. The reproductive strategy that Baltic populations of P. elegans has adopted is one of the factors responsible for its very rapid and large-scale colonization of the southern Baltic Sea.

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Section: Introductionmentioning

confidence: 99%

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

Janas

Mańkucka

2010

Oceanological and Hydrobiological Studies

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“…30) Hydrolysis process of dietary triacylglycerols starts in hepatopancreas/liver, 13) what also could determine the higher intensity of lipogenesis in earlier seasons, such as spring and summer, in hepatopancreas, after the reduced feeding in winter. 31) Therefore, the high intensity of FAs synthesis will be noted in hepatopancreas in earlier seasons (Table 1, Fig. 1).…”

Section: Resultsmentioning

confidence: 89%

Effect of seasonal and experimental temperature on de novo synthesis of fatty acids in C. crangon

Mika

Skorkowski

Stepnowski

2014

Bioscience, Biotechnology, and Biochemistry

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The intensity of in vivo lipogensis was measured and in this purpose, the radioactivity of incorporation of tritium into fatty acids (FAs) in tissues of C. crangon was determined. De novo synthesis of FAs was five times higher in hepatopancreas than in muscle in summer period but not much higher in autumn. The higher FAs synthesis was recorded at 25 °C, both for hepatopancreas and muscle, and the summer was higher than the autumn in the hepatopancreas and in the muscles of the opposite situation was observed. The higher amounts of SFAs in hepatopancreas from autumn, when in experimental conditions the ambient temperature C. crangon changed from 6 °C to the experimental higher temperature. When content of PUFAn-3 declined dramatically (Autumn 1 h, 25 °C). In contrast, at a lower temperature, the amount of polyunsaturated FAs is much higher than at 25 °C (Autumn 1 h 6 °C).

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“…From a literature survey on brown shrimp and grass shrimp densities found in natural systems ( ) and density converted to energetic value (J m −2 ) of grass shrimp and brown shrimp, in 3 different habitat types: bladderwrack Fucus vesiculosus, eelgrass Zostera marina, and sand. Data synthesised from Pihl & Rosenberg (1982), Baden & Pihl (1984), Lapinska & Szaniawska (2006), Wikstrom & Kautsky (2007), Jephson et al (2008), and Persson et al (2012). 'Predicted switch' indicates the prey abundance and equivalent energetic value (J) at which juvenile cod Gadus morhua should switch from generalist to specialist feeding fall below the threshold predicting a specialist strategy (Table 2, Fig.…”

Section: Discussionmentioning

confidence: 99%

“…The availability of prey to a predator depends on the density of prey and prey accessibility, i.e. the relationship between the ability of the predator to successfully find and capture prey, and the ability of the prey to avoid being caught or consumed (Savino & Stein 1982, Orth et al 1984, 2006. Prey accessibility, in turn, is strongly dependent on habitat characteristics that affect visual range and predator manoeuvrability, such as light regime and structural complexity (Diehl 1988, Gotceitas & Colgan 1989.…”

Section: Introductionmentioning

confidence: 99%

Prey selectivity by juvenile Atlantic cod Gadus morhua in three coastal habitat types

Ljungberg¹,

Nilsson²,

Persson³

2012

Mar. Ecol. Prog. Ser.

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Coastal habitats are heavily subjected to eutrophication and commercial fisheries, and such alterations can affect organism interaction strengths and potentially influence trophic dynamics. A key species inhabiting coastal environments in temperate waters is the Atlantic cod Gadus morhua, which utilises coastal areas for food and shelter. We used an experimental mechanistic approach to assay prey selectivity by juvenile cod when foraging on grass shrimp Palaemon elegans and brown shrimp Crangon crangon, under light and dark conditions, in 3 of the most abundant habitat types in temperate coastal environments -sand, eelgrass (artificial vegetation mimicking Zostera marina), and bladderwrack Fucus vesiculosus. Using functional response relationships from single-prey experiments, we calculated the energetically best foraging strategy for cod in the 3 habitats, i.e. feeding selectively on either of the shrimp species or on a combination of both. These predictions were tested in experiments where the cod predator was offered both prey species. Cod selected both prey species in accordance with our predictions in eelgrass and in bladderwrack under light conditions, but a lower than predicted consumption of grass shrimp was found in sand and in bladderwrack under dark conditions. Cod decreasingly selected grass shrimp with increasing habitat complexity, i.e. the highest selectivity was in sand and the lowest selectivity was in bladderwrack. As the 2 shrimp species have different trophic roles, cod selective predation may have effects on lower trophic levels. We provide a quantitative prediction of cod selective predation in habitat types that undergo degradation, and suggest that such predation can influence the trophic consequences from environmental change.

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Environmental Preferences of Crangon Crangon (linnaeus, 1758), Palaemon Adspersus Rathke, 1837, And Palaemon Elegans Rathke, 1837 in the Littoral Zone of the Gulf of Gdánsk

Cited by 22 publications

References 17 publications

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

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

Effect of seasonal and experimental temperature on de novo synthesis of fatty acids in C. crangon

Prey selectivity by juvenile Atlantic cod Gadus morhua in three coastal habitat types

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