Distribution, movements and diet of macrocrustaceans on a Scottish sandy beach with particular reference to predation on juvenile fishes

Ansell, A. D.; Comely, C. A.; Robb, Linda

doi:10.3354/meps176115

Cited by 61 publications

(52 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Its actual diet, however, is mainly determined by the spatial and temporal availability of its prey (Ansell et al 1999). In the Wadden Sea, predation of the common shrimp on bivalve spat is size selective (Beukema et al 1998; Van der Veer et al 1998;Hiddink et al 2002).…”

Section: Predation Thresholdsmentioning

confidence: 99%

Climate‐related changes in recruitment of the bivalve Macoma balthica

Philippart¹,

Aken²,

Beukema³

et al. 2003

Limnology & Oceanography

237

206

View full text Add to dashboard Cite

Population dynamics of common intertidal bivalves (Cerastoderma edule, Macoma balthica, Mya arenaria, Mytilus edulis) are strongly related to seawater temperatures. In northwestern European estuaries, series of mild winters followed by low bivalve recruit densities lead to small adult stocks. In this study, we examine temperature-induced effects on reproductive output (eggs m Ϫ2 ), onset of spawning (day of the year), and the juvenile instantaneous mortality rate (per day) of M. balthica. Data analysis was based on an extensive long-term data set originating from the western Wadden Sea. Our results strongly suggest that rising seawater temperatures affect recruitment by a decrease in reproductive output and by spring advancement of bivalve spawning. Apparently, global warming upsets the evolved reproductive strategy of this marine bivalve to tune its reproduction to the most optimal environmental conditions for the first vulnerable life stages, most importantly the match/mismatch of time of spawning with that of the phytoplankton bloom and the settlement of juvenile shrimps on the tidal flats. It is hypothesized that the observed density-dependent mortality of juvenile bivalves may act via competition for food, a behavioral response of shrimp to low spat densities, or be the result of the response of age and size at metamorphosis of marine bivalves to resource variability. It is to be expected that prolonged periods of lowered bivalve recruitment and stocks will lead to a reformulation of estuarine food webs and possibly a reduction of the resilience of the system to additional disturbances, such as the depletion and disturbance by shellfish fisheries.

show abstract

Section: Predation Thresholdsmentioning

confidence: 99%

Climate‐related changes in recruitment of the bivalve Macoma balthica

Philippart¹,

Aken²,

Beukema³

et al. 2003

Limnology & Oceanography

237

206

View full text Add to dashboard Cite

show abstract

“…Diet information for almost all the compartments here identified had to be obtained from the literature (e.g. Hughes, 1969;Costa, 1982;Pihl, 1985;Zajac, 1986;Sprung, 1994;Ansell et al, 1999;Azeiteiro et al, 1999;Cunha et al, 2000;Pardal et al, 2000, see Appendix A). Initially, all prey items of each compartment of macrofauna and fishes were listed, along with their corresponding percentages of occurrence.…”

Section: Production Consumption and Diet Compositionmentioning

confidence: 99%

Mass balanced models of the food web in three areas along a gradient of eutrophication symptoms in the south arm of the Mondego estuary (Portugal)

Patrício

Marques

2006

Ecological Modelling

View full text Add to dashboard Cite

EutrophicationTrophic structure a b s t r a c t Three Ecopath with Ecosim models were constructed to represent the eutrophication gradient along the south arm of the Mondego estuary (Portugal). Sampling was conducted in three areas representative of different environmental situations along the gradient: (a) a non-eutrophic area (Zostera noltii meadows), (b) an intermediate eutrophic area (macrophyte absent, although residual roots can still be found in the sediment, and the occasional formation of abundant macroalgae mats) and (c) a strongly eutrophic area (macrophyte community totally absent for at least a decade and strong, regularly occurring, blooms of Ulva spp.). Field, laboratory and literature information were used to construct the models, as well as empirical ecological knowledge gained from years of work on this system. Approximately 76 trophic groups (e.g. Phytoplankton and Zooplankton species), species and genera were included. These species were grouped into 43, 36 and 34 model groups for Zostera sp. meadows, intermediate eutrophic area and strongly eutrophic area, respectively. The groups were arranged by trophic similarity and habitat preferences; special distinction is given to macrofauna. Biomass, production, consumption, and diet are among the parameters used to describe each group. The sum of consumptions, exports, respiration, production, flow to detritus, total system throughput and annual rate of net primary production was always higher in the Zostera sp. meadows, followed by the strongly eutrophic area and, finally, by the intermediate eutrophic area.

show abstract

“…The animals show a broad feeding spectrum acting as predators unselectively feeding omnivorously or carnivorously (del Norte-Campos and Temming 1994; Gibson et al 1995). The stomach contents of C. crangon reflect the relative abundance of potential prey organisms in the respective habitat of the Crangon specimens (Plagmann 1939;Pihl and Rosenberg 1984;Ansell et al 1999;Oh et al 2001). All individuals studied here came from the sublittoral zone of the southern North Sea.…”

Section: Adaptive Polymorphism Of Endopeptidasesmentioning

confidence: 99%

Catalytic properties and polymorphism of serine endopeptidases from the midgut gland of the brown shrimp Crangon crangon (Decapoda, Caridea)

2012

View full text Add to dashboard Cite

The brown shrimp Crangon crangon is a key species in the coastal areas of the North Sea. It constitutes a significant food source for fishes. Simultaneously, it is an important predator on a wide range of invertebrates. C. crangon shows a variety of digestive enzymes that allow to utilizing a wide range of food items. The initial step of alimentary protein digestion, that is the degradation into peptides, is facilitated by set of endopeptidases which are expressed by the midgut gland. In crustaceans, these endopeptidases are often dominated by serine proteinases. C. crangon, however, predominantly express cysteine proteinases, while only some specimens show a highly variable pattern of serine proteinases. The composition of these serine endopeptidases was investigated using liquid chromatography, substrate gel electrophoresis and inhibitor assays. Distinctly elevated activities were present only in about 10% of the samples. When activity was detected, two peaks, one with tryptic activity and the other one with chymotryptic activity, could be separated by anionic exchange chromatography. Moreover, specimens with elevated tryptic activities often showed highly polymorphic patterns of endopeptidases after electrophoretic separation. Overall, 30 different bands of endopeptidases were identified. There was no similarity between animals from the same sampling sites, neither between animals of similar size, weight or nutritive state. The polymorphism of proteinase from the midgut gland seems to reflect the high adaptive potential of this species to variable trophic conditions in a continuously changing environment.

show abstract

Distribution, movements and diet of macrocrustaceans on a Scottish sandy beach with particular reference to predation on juvenile fishes

Cited by 61 publications

References 30 publications

Climate‐related changes in recruitment of the bivalve Macoma balthica

Climate‐related changes in recruitment of the bivalve Macoma balthica

Mass balanced models of the food web in three areas along a gradient of eutrophication symptoms in the south arm of the Mondego estuary (Portugal)

Catalytic properties and polymorphism of serine endopeptidases from the midgut gland of the brown shrimp Crangon crangon (Decapoda, Caridea)

Contact Info

Product

Resources

About