Bioaccumulation of four heavy metals in two populations of grass shrimp,Palaemonetes pugio

1989 ◽  
Vol 42 (3) ◽  
pp. 339-343 ◽  
Author(s):  
Abu T. Khan ◽  
Judith S. Weis ◽  
Lissane D'Andrea
Keyword(s):  
Heavy Metals ◽  
Grass Shrimp ◽  
Palaemonetes Pugio ◽  
Two Populations

Compensatory partitioning of carbon budgets by the grass shrimp (Palaemonetes pugio) and implications for predator prey relationships

2014 ◽  
Vol 9 (1) ◽  
pp. 19-27
Author(s):  
Josh Stout ◽  
Gary Taghon
Keyword(s):  
New Jersey ◽  
Anthropogenic Impacts ◽  
Grass Shrimp ◽  
Carbon Assimilation ◽  
Carbon Budgets ◽  
Anthropogenic Contamination ◽  
Carbon Utilization ◽  
Palaemonetes Pugio ◽  
Near Shore ◽  
Two Populations

AbstractCarbon utilization and allocation were examined between two populations of shrimp (Palaemonetes pugio) to determine the possible effects of living in an area of high anthropogenic impact. Carbon assimilation has been studied in P. pugio, but no study has looked at how assimilation might be influenced by contaminants. Anthropogenic effects on carbon assimilation in grass shrimp represent a major unmeasured impact on the carbon budget of multi-cellular organisms in estuaries and near shore environments. The influence of anthropogenic contamination on carbon assimilation has implications for predicting the environmental impact of contaminants, for models of estuarine function, and trophic transfer from the dominant macroscopic detritus processor to species of direct economic importance. Shrimp budgets were compared between two populations, one from a highly polluted marsh creek system in Northern New Jersey, and one from a clean reference site in Southern New Jersey. All components of the carbon budgets were measured directly including carbon allocated to reproduction. Carbon lost to respiration was lower in shrimp from the polluted system allowing them to have increased reproductive output. This is examined in the context of previous studies that show lowered predation by a piscine predator at the polluted site, resulting in a trophic cascade and changes in ecosystem function due to anthropogenic impacts.

Lead, Zinc, and Manganese, in Dredge-spoil Pond Ecosystems

1975 ◽  
Vol 2 (1) ◽  
pp. 39-45 ◽  
Author(s):  
Jeffrey E. Drifmeyer ◽  
William E. Odum
Keyword(s):  
Heavy Metals ◽  
Salt Marsh ◽  
Confidence Level ◽  
Fundulus Heteroclitus ◽  
Grass Shrimp ◽  
Sediment Type ◽  
Natural Marsh ◽  
Palaemonetes Pugio ◽  
Pond Ecosystem ◽  
Dredge Spoil

Pb, Zn, and Mn, levels in sediment and common estuarine plants and animals colonizing dredge-spoil disposal areas were compared with levels occurring in the same materials from a natural salt-marsh. Finegrained dredge-spoil had considerabily higher levels of all three metals than did natural salt-marsh sediment, and large differences in the metals content of the spoil were observed, depending on sediment type.Pb levels in the Grass Shrimp (Palaemonetes pugio), Mummichog (Fundulus heteroclitus), Common Reed (Phragmites communis), Saltmarsh Cordgrass (Spartina alterniflora), and Saltmeadow Hay (Spartina patens), from dredge-spoil areas, were significantly higher at the 0.01 confidence level than in these species from the natural salt-marsh. Zn concentrations were significantly higher at this confidence level in the three plant species growing in dredge-spoil compared with those from the natural marsh. Mn content in Grass Shrimp from ponds in dredge-spoil disposal areas was significantly higher (0.05 confidence level) than in those from the natural marsh. Thus, dredge-spoil containing heavy metals, even though disposed of in specially designed diked containment areas, may act as a source of certain heavy metals that are potentially toxic to the biota.Data on the transfer of Pb and Mn in simple foodchains of the dredge-spoil pond ecosystem are presented and discussed in relation to feeding behaviour. Decreasing concentrations with increasing tropic level were observed for Pb and Mn, but no consistent pattern was noted with Zn.

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