Some Ecological Perspectives in the Study of the Nutrition of Deposit Feeders

Tenore, Kenneth R.

doi:10.1007/978-1-4684-7671-2_14

Cited by 3 publications

(2 citation statements)

References 4 publications

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“…Sediments were enriched by adding equal amounts of total organic carbon (TOC) of either terrestrial lignin or microalgae concentrate. Lignin is considered to be a low‐quality, refractory carbon source, being relatively indigestible by marine detrivorous macrofauna [20,21]. Lignin molecules are mainly comprised by carbon, thus having a high TOC and low total nitrogen (TN) content (Table 1).…”

Section: Methodsmentioning

confidence: 99%

“…Quality or food value is, however, an important trait of organic matter, because it determines growth and fitness in organisms and also affects their activity [31]. Various quality indicators have been suggested for sediment (e.g., chlorophyll a, lipid, protein, and available AA and nitrogen contents), all based on their documented effect on growth or production in benthic organisms [21]. The nitrogen and AA contents of organic substrates appear, however, to be easily measured and useful quality indicators [20].…”

Section: Organic Matter Qualitymentioning

confidence: 99%

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Role of sediment organic matter quality and feeding history in dietary absorption and accumulation of pyrene in the mud snail (Hydrobia ulvae)

Granberg

Forbes

2006

Enviro Toxic and Chemistry

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Organic matter (OM) input to marine sediments varies seasonally both in quantity and quality. Because sedimentary OM (SOM) constitutes food for many benthic organisms, its properties should affect the dietary uptake of sediment-associated contaminants. We explored the effect of SOM quality/food value on short- and long-term pyrene accumulation in the mud snail (Hydrobia ulvae) and performed dual-tracer pulse-chase experiments to investigate the feeding mechanisms driving dietary pyrene uptake. The quality of the SOM was manipulated by enriching sediments either with high-quality microalgae or low-quality lignin, adding equal amounts of total organic carbon. Long- and short-term bioaccumulation increased with increasing SOM quality, as did pyrene ingestion rate (IR(pyr)), which also was affected by feeding history. By feeding selectively, snails concentrated pyrene 10-fold in ingested compared to ambient sediment, independent of SOM quality. Average pyrene absorption efficiency (AE(pyr): -65%) varied inversely with SOM quality and IR(pyr). Both AE(pyr) and gut passage time (alpha 1/IR(pyr)) agreed with theoretical models incorporating the time-dependence of absorption efficiency. Thus, SOM quality moderates dietary contaminant uptake in deposit feeders, and in H. ulvae, this occurs via OM-induced alterations of ingestion rate. Consequently, enhanced sediment-associated contaminant uptake is predicted for deposit feeders following phytoplankton blooms, principally because of OM quality-driven increases in the ingestion rate.

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Section: Methodsmentioning

confidence: 99%

Section: Organic Matter Qualitymentioning

confidence: 99%

Role of sediment organic matter quality and feeding history in dietary absorption and accumulation of pyrene in the mud snail (Hydrobia ulvae)

Granberg

Forbes

2006

Enviro Toxic and Chemistry

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Food selection of Tanytarsus gracilentus larvae (Diptera: Chironomidae): An analysis of instars and cohorts

2004

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Capitella teleta, a new species designation for the opportunistic and experimental Capitella sp. I, with a review of the literature for confirmed records

Blake¹,

2009

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This paper provides a morphological description of Capitella teleta sp. nov., an opportunistic capitellid that is also commonly used as an experimental polychaete under the provisional designation Capitella sp. I. The species is widely distributed along the east and west coasts of North America and also reported from Japan and the Mediterranean. The species belongs to a group having distinct sexual dimorphism, yet with hermaphrodites occurring under certain conditions. Morphologically, C. teleta has a long, narrow body, with all thoracic segments similar except for sexual modifications on setigers 8–9; the prostomium/peristomium combined are long, narrow and about 2.5 times as long as setiger 1. Capillary setae are present in noto- and neuropodia of setigers 1–7; setigers 8–9 have hooded hooks in noto- and neuropodia of females; genital spines replace notopodial hooks in males. A methyl green staining pattern is limited to some thoracic setigers of females; males lack a distinct staining pattern. The cytochrome oxidase I (COI) sequence is presented. Relationships of C. teleta with the type-species, C. capitata and other known species including siblings identified in laboratory culture are discussed. The syntype of Ancistria acuta Verrill, 1874, the only known species of Capitella described from New England was examined and determined to be incertae sedis. C. teleta is a highly opportunistic species and appears to be the same as the C. capitata identified from southern California as the “polluted zone indicator” by D.J. Reish in the late 1950s. An appendix with over 200 published references to research conducted on C. teleta is included.

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Some Ecological Perspectives in the Study of the Nutrition of Deposit Feeders

Cited by 3 publications

References 4 publications

Role of sediment organic matter quality and feeding history in dietary absorption and accumulation of pyrene in the mud snail (Hydrobia ulvae)

Role of sediment organic matter quality and feeding history in dietary absorption and accumulation of pyrene in the mud snail (Hydrobia ulvae)

Food selection of Tanytarsus gracilentus larvae (Diptera: Chironomidae): An analysis of instars and cohorts

<p class="HeadingRunIn"><strong><em>Capitella teleta</em>, a new species designation for the opportunistic and experimental <em>Capitella</em> sp. I, with a review of the literature for confirmed records</strong></p>

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