Chronic exposure of Leptocheirus plumulosus to Baltimore Harbor sediment: Bioenergetic and population-level effects

Manyin, Teresa; Rowe, Christopher L.

doi:10.1016/j.marenvres.2006.03.006

Cited by 26 publications

(10 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Available published body-burden data suggest that the steady-state metal concentrations predicted here fall within a realistic range for Cd and As. When exposed to uncontaminated Chesapeake Bay sediments for 42 d, L. plumulosus had body burdens of 0.085 mg/g (Cd) and 3.23 mg/g (As); when exposed to contaminated sediments, body burdens were 0.237 mg/g (Cd) and 5.23 mg/g (As), respectively, and Hg[II] body burdens were below detection limit [27]. These Cd body burdens overlap with the range of C ss values predicted here across variation in AE and K d for suspension feeding, and the As body burdens overlap with the range of C ss values predicted here across variation in K d for deposit feeding ( Table 2).…”

Section: Discussionmentioning

confidence: 99%

Metal (As, Cd, Hg, and CH₃Hg) bioaccumulation from water and food by the benthic amphipod Leptocheirus plumulosus

Williams

Dutton

Chen

et al. 2010

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Benthic invertebrates may be exposed to metals in porewater, overlying water, ingested sediments, and other food particles. Rates and routes of metal exposure have important implications for predicting toxicity and interpreting toxicity test results. For the standard test amphipod Leptocheirus plumulosus, radiotracer techniques were used to quantify rates of Cd, As, Hg(II), and CH3Hg bioaccumulation from water and from suspension-feeding on labeled microalgae. Measured parameters were incorporated into a bioaccumulation model to predict steady-state metal concentrations in L. plumulosus and to evaluate the relative importance of aqueous and dietary uptake pathways across a range of ingested particle types and ingestion rates. Results indicate that ingested particles contribute strongly to metal bioaccumulation, and that feeding plasticity could strongly influence metal exposure. As L. plumulosus switches from suspension-feeding to deposit feeding or selectively feeds on particles for which it has a high assimilation efficiency, metal exposure and body burden will increase. At ingestion rates previously reported for deposit feeding (3 g/g/d), dietary metal sources dominate metal bioaccumulation and can be responsible for greater than 90% of metal bioaccumulated, regardless of metal partitioning or ingested particle type. Theses results suggest that more research on L. plumulosus feeding behavior is needed to produce a more complete mechanistic understanding of metal bioaccumulation.

show abstract

Section: Discussionmentioning

confidence: 99%

Metal (As, Cd, Hg, and CH₃Hg) bioaccumulation from water and food by the benthic amphipod Leptocheirus plumulosus

Williams

Dutton

Chen

et al. 2010

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

show abstract

“…Similar reductions in amphipod survival at day 50 has been observed by Redmond et al [45] and Kuhn et al [37], with adult A. abdita survival of 47% on day 50 and 26% on day 60. Manyin and Rowe [49] reported adult survival of 71% for Leptocheirus plumulosus at day 42. Although final adult breeding populations were reduced in step 1 of the control, a decline in offspring production did not occur, even when compared with elevated lead levels with similar breeding populations.…”

Section: Discussionmentioning

confidence: 99%

Long‐term sediment bioassay of lead toxicity in two generations of the marine amphipod Elasmopus laevis, S.I. Smith, 1873

Ringenary

Molof

Tanacredi

et al. 2007

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Abstract-Sediments are evaluated for toxicity by measuring mortality in a single cohort of amphipods in either acute (10-d) or chronic (28-d) bioassays. This investigation differed from conventional bioassays in four ways: Sublethal effects (fecundity) were estimated; the testing period was 60ϩ d; two successive generations were examined; and Elasmopus laevis Smith, 1873, amphipods were employed. Four test sediments were created between 58 and 424 g/g of lead using the 30-g/g whole-sediment as the control. Bioaccumulated lead at 60 d varied as a linear function of lead concentration in the sediments. Fecundity, as estimated by offspringper-chamber and/or percent reproductive success, was reduced as sediment lead concentrations increased and reproduction was delayed compared with the control. The reduction in offspring production per test chamber varied significantly as an inverse function of lead sediment concentration, best described by a curvilinear exponential equation. It was concluded that E. laevis exposed to 118 g/g and higher could not maintain a population as large as that in the control. Although the current sediment quality guideline for lead stipulates that adverse biological effects likely will occur above 218 g/g, this study revealed a statistically significant negative reproductive response at 118 g/g lead, and suggests that the current regulatory guideline for lead, based on lethality, should be reconsidered.

show abstract

“…Microcosms are ideal for exploring functional components (such as decomposition and nutrient mobilization) of an ecosystem (Verhoef 1996). Past research in urban ecosystems using this approach includes ecotoxicology and eutrophication risk assessments (e.g., Loureiro et al 2005;Manyin and Rowe 2006;Snodgrass et al 2008), nutrient cycling, soil ecology (e.g., Steinberg et al 1997;Pieper and Weigmann 2008) and food web interaction studies (e.g., Walton et al 2006). The importance of variation in recruitment of plants and invertebrates at the garden level is tested via addition of microcosms to backgardens with varying levels of diversity, and the significance of fine-scale variation is tested by varying microcosm quality directly.…”

mentioning

confidence: 99%

The importance of urban backgardens on plant and invertebrate recruitment: a field microcosm experiment

Sperling

Lortie

2009

Urban Ecosyst

View full text Add to dashboard Cite

Private backgardens in cities have the capacity to enhance ecological function and connectivity. The importance of increased habitat availability was tested experimentally using microcosms with soil or with soil and vegetation added into Toronto backgardens. Local attributes of the backgardens were recorded, and within the microcosms, recruitment of seeds, plants, and winged and wingless invertebrates were recorded. Natural recruitment by all organisms was significant into the microcosms in the 20 backgardens tested. Invertebrate abundance and diversity, incidental seed recruitment, and aboveground vegetation growth was enhanced regardless of whether only bare soil was added or soil with vegetation. The number of woody plants (non-herbaceous plants with hard lignified tissues or woody parts e.g., stems and are adapted to survive from one year to the next i.e., through winter) in the backgardens predicted seed recruitment and number of plant species predicted winged invertebrate abundance. Hence, simple augmentation of private backgardens-even at an ecologically small-scale-can enhance the capacity of urban systems to provide appropriate habitats for organisms within a difficult matrix for many species.

show abstract

Chronic exposure of Leptocheirus plumulosus to Baltimore Harbor sediment: Bioenergetic and population-level effects

Cited by 26 publications

References 32 publications

Metal (As, Cd, Hg, and CH₃Hg) bioaccumulation from water and food by the benthic amphipod Leptocheirus plumulosus

Metal (As, Cd, Hg, and CH₃Hg) bioaccumulation from water and food by the benthic amphipod Leptocheirus plumulosus

Long‐term sediment bioassay of lead toxicity in two generations of the marine amphipod Elasmopus laevis, S.I. Smith, 1873

The importance of urban backgardens on plant and invertebrate recruitment: a field microcosm experiment

Contact Info

Product

Resources

About

Chronic exposure of Leptocheirus plumulosus to Baltimore Harbor sediment: Bioenergetic and population-level effects

Cited by 26 publications

References 32 publications

Metal (As, Cd, Hg, and CH3Hg) bioaccumulation from water and food by the benthic amphipod Leptocheirus plumulosus

Metal (As, Cd, Hg, and CH3Hg) bioaccumulation from water and food by the benthic amphipod Leptocheirus plumulosus

Long‐term sediment bioassay of lead toxicity in two generations of the marine amphipod Elasmopus laevis, S.I. Smith, 1873

The importance of urban backgardens on plant and invertebrate recruitment: a field microcosm experiment

Contact Info

Product

Resources

About

Metal (As, Cd, Hg, and CH₃Hg) bioaccumulation from water and food by the benthic amphipod Leptocheirus plumulosus

Metal (As, Cd, Hg, and CH₃Hg) bioaccumulation from water and food by the benthic amphipod Leptocheirus plumulosus