Über den Röhrenbau und die Nahrungsaufnahme einiger Spioniden (Polychaeta sedentaria) der deutschen Küsten

Hempel, Christine

doi:10.1007/bf01609104

Cited by 58 publications

(32 citation statements)

References 14 publications

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“…In Spiochaetopterus oculatus, Telepsavus costarum, and Phyllochaetopterus socialis, the water current through the tube is generated by ciliary rings of the foliaceous notopodia. Another example is the small polychaete Pygospio elegans, which can build a mucus net within its tube (Hempel 1957). Finally, it can be mentioned that the gastropod Crepidula fornicata uses a ciliary pump and a mucus net covering the greatly enlarged gill (Werner 1959;Jørgensen et al 1984).…”

Section: Capture Mechanismsmentioning

confidence: 99%

Minireview: Ciliary filter feeding and bio‐fluid mechanics—present understanding and unsolved problems

Riisgård¹,

Larsen

2001

Limnology & Oceanography

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The energy cost for various ciliary filter feeders shows that useful pump work constitutes 0.3-1.1% of the total metabolic expenditure. The 'water processing potential' (liters of water pumped per milliliter O 2 consumed by the animal) is a useful tool for characterizing filter feeding and adaptation to the environment. The six types of ciliarycapture mechanisms (collar sieving, cirral trapping, ciliary sieving, ciliary downstream collecting, ciliary upstream collecting, mucus-net sieving) are reviewed as well as the aerosol/hydrosol filtration theory. A brief overview of fluid mechanical principles and tools for studying ciliary functions is given.Filter feeding (or suspension feeding) is widely represented among invertebrate taxa, and cilia-mediated feeding is particularly common in the marine environment. Ciliary filter feeders remove suspended food particles, mainly phytoplankton (2-200 m), but in many cases also free-living bacteria (0.2-2 m), from the water (Jørgensen 1966(Jørgensen , 1975Wotton 1994;Silverman et al. 1995Silverman et al. , 1997 Riisgård andLarsen 1995, 2001;Gili and Coma 1998). These animals have adapted to life in a nutritionally dilute environment, and they show great variations in particle capture mechanisms and pump design (Foster-Smith

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Section: Capture Mechanismsmentioning

confidence: 99%

Minireview: Ciliary filter feeding and bio‐fluid mechanics—present understanding and unsolved problems

Riisgård¹,

Larsen

2001

Limnology & Oceanography

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“…In the present case, the tubedwelling polychaete Pygospio elegans abandoned the aggregates of both bivalves, Macoma balthica and Cerastoderrna edule. This spionid polychaete feeds on small surface deposits as well as on suspended parti- cles (Hempel, 1957;Fauchald and Jumars, 1979). Thus there is an overlap with the food spectra of both bivalves.…”

Section: Competitive Displacementmentioning

confidence: 99%

Biotic enrichment of intertidal sediments by experimental aggregates of the deposit-feeding bivalve Macoma balthica

Reise¹

1983

Mar. Ecol. Prog. Ser.

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Experimental aggregates of the bivalve Macoma balthica, established on a sandy tidal flat in the North Sea, are preferentially colonized by small zoobenthos. The tellinids stay buried at 3 to 6 cm while their long inhalant siphons pick up deposits from the surface. The short exhalant siphons terminate within the sediment. High abundance of diatom-feeding Turbellaria at the surface, and bacteria-feedmg and predatory species in the subsurface suggest enhanced growth of rnicroalgae, bacteria and their grazers, stimulated by M. balthica. No such 'gardening' effects are observed within aggregates of the suspension-feeding cockle Cerastoderma edule, where exhalant siphons are flush with the surface. Both bivalve aggregates, however, displaced the tube-dwelling polychaete Pygospjo elegans.

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“…Three species, Polydora ligni, P. ciliata and Pygospio etegans, have a particularly wide geographical distribution with dense local populations, often indicating organic pollution (e.g. Hempel, 1957a;Muus, 1967;Blake, 1969;Hartmann-SchrSder, 1971;Anger, 1977;Rice & Simon, 1980). During the reproductive season, their pelagic larvae may become very frequent, sometimes dominant members of coastal zooplankton communities (e.g.…”

Section: Introductionmentioning

confidence: 99%

Laboratory studies on larval growth ofPolydora ligni, Polydora ciliata, andPygospio elegans (Polychaeta, Spionidae)

Anger

Hagmeier

1986

Helgolander Meeresunters

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The spionid polychaete species Polydora ligni, P. cfliata, and Pygospio elegans were cultivated in the laboratory over several successive generations. A flow-through cultivation system for Polydora spp. is described. Duration of life cycles (time from hatching of the larva to first reproduction) and life spans (hatching to death) of these species were not significantly influenced by the degree of inbreeding nor by individual age of the parents. Minimum time from metamorphosis (15-setiger stage) to first hatching of offspring larvae (in the 3-setiger stage) at 18 °C was 33 days in Polydora spp. and 81 days in Pygospio elegans. Larval growth patterns are described in terms of number of setigers, body length, and biomass (dry weight, carbon, nitrogen, hydrogen), in relation to time after hatching. Regression models are proposed which link these measures of larval growth and, thus, may be used for conversions. Rates of development and growth show a high degree of variability in all three species, not only caused by variation in environmental factors such as temperature or food, but also among and within single hatches of larvae reared under identical conditions. Larvae were reared at constant temperatures (6 °, 12 °, and 18 °C). Temperature affected larval growth in Polydora ligni more than in P. ciliata, and least of all in l~,gospio elegans. Only the latter species was able to develop at 6 °C from hatching to metamorphosis. This differential response may be explained by differences in the natural spawning season of these species. Eleven phytoplankton species were tested as to their food values. A "relative index of growth" is proposed which compares the slopes of two growth curves (one standard and one test condition). The flagellate Dunatiella tertiolecta was used as a standard food in these experiments. Most algal species were less suitable, and only the diatom Thalassiosira rotula was consistently better food for spionid larvae than D. tertiolecta.

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Über den Röhrenbau und die Nahrungsaufnahme einiger Spioniden (Polychaeta sedentaria) der deutschen Küsten

Cited by 58 publications

References 14 publications

Minireview: Ciliary filter feeding and bio‐fluid mechanics—present understanding and unsolved problems

Minireview: Ciliary filter feeding and bio‐fluid mechanics—present understanding and unsolved problems

Biotic enrichment of intertidal sediments by experimental aggregates of the deposit-feeding bivalve Macoma balthica

Laboratory studies on larval growth ofPolydora ligni, Polydora ciliata, andPygospio elegans (Polychaeta, Spionidae)

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