Data

Feeding patterns of the gastropod Lepsiella vinosa on the West Head rocky shore in Victoria

Australian Ocean Data Network
Synnot, Russell
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/d8259dc0-f651-11dc-9fa2-00188b4c0af8&rft.title=Feeding patterns of the gastropod Lepsiella vinosa on the West Head rocky shore in Victoria&rft.identifier=https://catalogue.aodn.org.au:443/geonetwork/srv/api/records/d8259dc0-f651-11dc-9fa2-00188b4c0af8&rft.description=This study used observations of Lepsiella vinosa and surveys of prey species to describe the diet of L.vinosa on rocky shore at West Head, Victoria. The numbers of individual L.vionsa observed feeding were recorded during the surveys of Site 1 and Site 2 from 1975 to 1978 (see ?The population dynamics of the gastropod Lepsiella vinosa on the West Head rocky shore in Victoria? file identifier: 05f4f7f0-f49f-11dc-9f74-00188b4c0af8). In addition, six quadrats (25 x 25 cm) were randomly placed at the 2 sites every 2 months from March 1976 to January 1977. The number and size (measured to the nearest 0.01 cm) of prey species was recorded in each quadrat. The number of L.vinosa recorded feeding varied seasonally and strongly correlated with the changes in density of prey species. In Area 1, L.vinosa was feeding on Littorina unifasciata for 66% of the observations and Littorina praetermissa, Bembicium nanum, Kellia australis, Nerita atramentosa, Chthamalus atennatus and Zenostrobus pulex for the remaining proportion of observations (n=895). In Area 2, there were fewer observations of feeding L.vinosa (n=53) with the same species recorded as prey items but the majority 34% of L.vinosa was feeding on Nerita atramentosa. Analyses of the data from the quadrats indicated that, in late summer and autumn, L.vinosa reduced its selectivity for prey species, compared to early winter and spring, when they targeted Littorina spp.Statement: Prey species recorded in the quadrats were Littorina unifasciata, L.praetermissa, Austrocochlea constricta, Bembicium nanum, Nerita atramentosa, Chthamalus antennatus, Kellia australis, Siphonaria diemenensis, Notoacmaea sp., Zenostrobus pulex and Cellana tramoserica. The six quadrats for each 2-month sampling period were pooled and mean density per square metre was calculated.&rft.creator=Synnot, Russell &rft.date=1980&rft.coverage=westlimit=145.03; southlimit=-38.48; eastlimit=145.03; northlimit=-38.48&rft.coverage=westlimit=145.03; southlimit=-38.48; eastlimit=145.03; northlimit=-38.48&rft_rights=Contact the principal investigator for more information about the data&rft_rights=This metadata may be downloaded for the use in accordance with the Copyright Act 1968&rft_subject=biota&rft_subject=Oceans | Marine Biology | Marine Invertebrates | gastropoda | thaid&rft_subject=Biosphere | Zoology | Invertebrates&rft_subject=Oceans | Marine Biology | Marine Invertebrates&rft_subject=POPULATION DYNAMICS&rft_subject=EARTH SCIENCE&rft_subject=BIOSPHERE&rft_subject=ECOLOGICAL DYNAMICS&rft_subject=SPECIES/POPULATION INTERACTIONS&rft_subject=Biosphere | Ecological Dynamics | Life History | mortality&rft_subject=Biosphere | Ecological Dynamics | Life History | reproduction&rft_subject=Biosphere | Ecological Dynamics | Predation&rft_subject=Biosphere | Aquatic Habitat | Benthic Habitat | rocky shore&rft_subject=West Head&rft_subject=Western Port Bay&rft_subject=Lepsiella vinosa&rft_subject=24 200165&rft.type=dataset&rft.language=English Access the data
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Brief description

This study used observations of Lepsiella vinosa and surveys of prey species to describe the diet of L.vinosa on rocky shore at West Head, Victoria. The numbers of individual L.vionsa observed feeding were recorded during the surveys of Site 1 and Site 2 from 1975 to 1978 (see ?The population dynamics of the gastropod Lepsiella vinosa on the West Head rocky shore in Victoria? file identifier: 05f4f7f0-f49f-11dc-9f74-00188b4c0af8). In addition, six quadrats (25 x 25 cm) were randomly placed at the 2 sites every 2 months from March 1976 to January 1977. The number and size (measured to the nearest 0.01 cm) of prey species was recorded in each quadrat. The number of L.vinosa recorded feeding varied seasonally and strongly correlated with the changes in density of prey species. In Area 1, L.vinosa was feeding on Littorina unifasciata for 66% of the observations and Littorina praetermissa, Bembicium nanum, Kellia australis, Nerita atramentosa, Chthamalus atennatus and Zenostrobus pulex for the remaining proportion of observations (n=895). In Area 2, there were fewer observations of feeding L.vinosa (n=53) with the same species recorded as prey items but the majority 34% of L.vinosa was feeding on Nerita atramentosa. Analyses of the data from the quadrats indicated that, in late summer and autumn, L.vinosa reduced its selectivity for prey species, compared to early winter and spring, when they targeted Littorina spp.

Lineage

Statement: Prey species recorded in the quadrats were Littorina unifasciata, L.praetermissa, Austrocochlea constricta, Bembicium nanum, Nerita atramentosa, Chthamalus antennatus, Kellia australis, Siphonaria diemenensis, Notoacmaea sp., Zenostrobus pulex and Cellana tramoserica. The six quadrats for each 2-month sampling period were pooled and mean density per square metre was calculated.

Notes

Credit
Dr. Murray Littlejohn

Issued: 18 02 1980

Data time period: 1975-06 to 1978-12

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145.03,-38.48

145.03,-38.48

text: westlimit=145.03; southlimit=-38.48; eastlimit=145.03; northlimit=-38.48

Subjects
24 200165 | BIOSPHERE | Biosphere | Aquatic Habitat | Benthic Habitat | rocky shore | Biosphere | Ecological Dynamics | Life History | mortality | Biosphere | Ecological Dynamics | Life History | reproduction | Biosphere | Ecological Dynamics | Predation | Biosphere | Zoology | Invertebrates | EARTH SCIENCE | ECOLOGICAL DYNAMICS | Lepsiella vinosa | Oceans | Marine Biology | Marine Invertebrates | Oceans | Marine Biology | Marine Invertebrates | gastropoda | thaid | Population Dynamics | SPECIES/POPULATION INTERACTIONS | West Head | Western Port Bay | biota |

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