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Population density affecting adult shell size of snail Cepaea nemoralis L
THOMAS et al. 1,2 have questioned the ability of molluscs to limit their population size by self inhibition at high densities. They suggest that plant metabolites may have caused the reduction in growth and fecundity of the aquatic snail Biomphalaria glabrata Say ascribed to crowding in previous stu...
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| Published in: | Nature (London) 1976-10, Vol.263 (5577), p.496-497 |
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| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c334t-552c7748fe3e692e4ea033b6476ef6b3cf73c60102b9178fc641c546c92f7dec3 |
| container_end_page | 497 |
| container_issue | 5577 |
| container_start_page | 496 |
| container_title | Nature (London) |
| container_volume | 263 |
| creator | WILLIAMSON, P CAMERON, R. A. D CARTER, M. A |
| description | THOMAS
et al.
1,2
have questioned the ability of molluscs to limit their population size by self inhibition at high densities. They suggest that plant metabolites may have caused the reduction in growth and fecundity of the aquatic snail
Biomphalaria glabrata
Say ascribed to crowding in previous studies
3,4
. Field evidence for density-dependent regulation is limited. Yom-Tov
5
found that the fecundity of the desert snail
Trochoidea seetzeni
Pfeiffer was adversely affected by population density; he considered that either self-inhibition or nutritional differences were responsible. While studying the population dynamics and energetics of the land snail
Cepaea nemoralis
L., we have found evidence for density-dependent effects that cannot readily be explained by resource limitation. In samples of
C. nemoralis
collected in 1968 to study shell polymorphism (M. A. Palles-Clark, unpublished) a negative correlation was noticed between adult shell diameter and sample size (
r
=−0.60,
P |
| doi_str_mv | 10.1038/263496b0 |
| format | article |
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et al.
1,2
have questioned the ability of molluscs to limit their population size by self inhibition at high densities. They suggest that plant metabolites may have caused the reduction in growth and fecundity of the aquatic snail
Biomphalaria glabrata
Say ascribed to crowding in previous studies
3,4
. Field evidence for density-dependent regulation is limited. Yom-Tov
5
found that the fecundity of the desert snail
Trochoidea seetzeni
Pfeiffer was adversely affected by population density; he considered that either self-inhibition or nutritional differences were responsible. While studying the population dynamics and energetics of the land snail
Cepaea nemoralis
L., we have found evidence for density-dependent effects that cannot readily be explained by resource limitation. In samples of
C. nemoralis
collected in 1968 to study shell polymorphism (M. A. Palles-Clark, unpublished) a negative correlation was noticed between adult shell diameter and sample size (
r
=−0.60,
P
<0.001). Snails were collected from chalk grassland between Beacon Hill and Round Down, West Sussex. A more detailed study carried out in the same area during the summer of 1973 confirmed this effect. The density of adult
C. nemoralis
was measured by mark-recapture at nine 20 × 20 m sites, situated 100–600 m apart. Each site was sampled in May, June and August. As there were insufficient recaptures to use multiple recapture methods for all sites, adult population densities were estimated for the second sampling occasion using the Lincoln index.</description><identifier>ISSN: 0028-0836</identifier><identifier>EISSN: 1476-4687</identifier><identifier>DOI: 10.1038/263496b0</identifier><identifier>PMID: 972693</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>Animals ; Body Weight ; Humanities and Social Sciences ; letter ; multidisciplinary ; Population Density ; Science ; Science (multidisciplinary) ; Seasons ; Snails - anatomy & histology</subject><ispartof>Nature (London), 1976-10, Vol.263 (5577), p.496-497</ispartof><rights>Springer Nature Limited 1976</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c334t-552c7748fe3e692e4ea033b6476ef6b3cf73c60102b9178fc641c546c92f7dec3</citedby><cites>FETCH-LOGICAL-c334t-552c7748fe3e692e4ea033b6476ef6b3cf73c60102b9178fc641c546c92f7dec3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,2727,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/972693$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>WILLIAMSON, P</creatorcontrib><creatorcontrib>CAMERON, R. A. D</creatorcontrib><creatorcontrib>CARTER, M. A</creatorcontrib><title>Population density affecting adult shell size of snail Cepaea nemoralis L</title><title>Nature (London)</title><addtitle>Nature</addtitle><addtitle>Nature</addtitle><description>THOMAS
et al.
1,2
have questioned the ability of molluscs to limit their population size by self inhibition at high densities. They suggest that plant metabolites may have caused the reduction in growth and fecundity of the aquatic snail
Biomphalaria glabrata
Say ascribed to crowding in previous studies
3,4
. Field evidence for density-dependent regulation is limited. Yom-Tov
5
found that the fecundity of the desert snail
Trochoidea seetzeni
Pfeiffer was adversely affected by population density; he considered that either self-inhibition or nutritional differences were responsible. While studying the population dynamics and energetics of the land snail
Cepaea nemoralis
L., we have found evidence for density-dependent effects that cannot readily be explained by resource limitation. In samples of
C. nemoralis
collected in 1968 to study shell polymorphism (M. A. Palles-Clark, unpublished) a negative correlation was noticed between adult shell diameter and sample size (
r
=−0.60,
P
<0.001). Snails were collected from chalk grassland between Beacon Hill and Round Down, West Sussex. A more detailed study carried out in the same area during the summer of 1973 confirmed this effect. The density of adult
C. nemoralis
was measured by mark-recapture at nine 20 × 20 m sites, situated 100–600 m apart. Each site was sampled in May, June and August. As there were insufficient recaptures to use multiple recapture methods for all sites, adult population densities were estimated for the second sampling occasion using the Lincoln index.</description><subject>Animals</subject><subject>Body Weight</subject><subject>Humanities and Social Sciences</subject><subject>letter</subject><subject>multidisciplinary</subject><subject>Population Density</subject><subject>Science</subject><subject>Science (multidisciplinary)</subject><subject>Seasons</subject><subject>Snails - anatomy & histology</subject><issn>0028-0836</issn><issn>1476-4687</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1976</creationdate><recordtype>article</recordtype><recordid>eNptkDtPwzAUhS3EqxQkfgBCnhAMAb9iOyOqeFSqBAPMkeNcl1SJE-xkKL-eoEAnpjucT5_OPQidU3JLCdd3THKRyYLsoRkVSiZCarWPZoQwnRDN5TE6iXFDCEmpEkfoMFNMZnyGlq9tN9Smr1qPS_Cx6rfYOAe2r_wam3Koexw_oK5xrL4Atw5Hb6oaL6AzYLCHpg2mriJenaIDZ-oIZ793jt4fH94Wz8nq5Wm5uF8llnPRJ2nKrFJCO-AgMwYCDOG8kGNpcLLg1iluJaGEFRlV2lkpqE2FtBlzqgTL5-hq8nah_Rwg9nlTRTs2NB7aIeaap0wrrUfwegJtaGMM4PIuVI0J25yS_Ge0_G-0Eb34dQ5FA-UOnFYa45spjmPg1xDyTTsEP375n-pyYr3phwA71Q74BmuNfXM</recordid><startdate>19761007</startdate><enddate>19761007</enddate><creator>WILLIAMSON, P</creator><creator>CAMERON, R. A. D</creator><creator>CARTER, M. A</creator><general>Nature Publishing Group UK</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19761007</creationdate><title>Population density affecting adult shell size of snail Cepaea nemoralis L</title><author>WILLIAMSON, P ; CAMERON, R. A. D ; CARTER, M. A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c334t-552c7748fe3e692e4ea033b6476ef6b3cf73c60102b9178fc641c546c92f7dec3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1976</creationdate><topic>Animals</topic><topic>Body Weight</topic><topic>Humanities and Social Sciences</topic><topic>letter</topic><topic>multidisciplinary</topic><topic>Population Density</topic><topic>Science</topic><topic>Science (multidisciplinary)</topic><topic>Seasons</topic><topic>Snails - anatomy & histology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>WILLIAMSON, P</creatorcontrib><creatorcontrib>CAMERON, R. A. D</creatorcontrib><creatorcontrib>CARTER, M. A</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Nature (London)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>WILLIAMSON, P</au><au>CAMERON, R. A. D</au><au>CARTER, M. A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Population density affecting adult shell size of snail Cepaea nemoralis L</atitle><jtitle>Nature (London)</jtitle><stitle>Nature</stitle><addtitle>Nature</addtitle><date>1976-10-07</date><risdate>1976</risdate><volume>263</volume><issue>5577</issue><spage>496</spage><epage>497</epage><pages>496-497</pages><issn>0028-0836</issn><eissn>1476-4687</eissn><abstract>THOMAS
et al.
1,2
have questioned the ability of molluscs to limit their population size by self inhibition at high densities. They suggest that plant metabolites may have caused the reduction in growth and fecundity of the aquatic snail
Biomphalaria glabrata
Say ascribed to crowding in previous studies
3,4
. Field evidence for density-dependent regulation is limited. Yom-Tov
5
found that the fecundity of the desert snail
Trochoidea seetzeni
Pfeiffer was adversely affected by population density; he considered that either self-inhibition or nutritional differences were responsible. While studying the population dynamics and energetics of the land snail
Cepaea nemoralis
L., we have found evidence for density-dependent effects that cannot readily be explained by resource limitation. In samples of
C. nemoralis
collected in 1968 to study shell polymorphism (M. A. Palles-Clark, unpublished) a negative correlation was noticed between adult shell diameter and sample size (
r
=−0.60,
P
<0.001). Snails were collected from chalk grassland between Beacon Hill and Round Down, West Sussex. A more detailed study carried out in the same area during the summer of 1973 confirmed this effect. The density of adult
C. nemoralis
was measured by mark-recapture at nine 20 × 20 m sites, situated 100–600 m apart. Each site was sampled in May, June and August. As there were insufficient recaptures to use multiple recapture methods for all sites, adult population densities were estimated for the second sampling occasion using the Lincoln index.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>972693</pmid><doi>10.1038/263496b0</doi><tpages>2</tpages></addata></record> |
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| ispartof | Nature (London), 1976-10, Vol.263 (5577), p.496-497 |
| issn | 0028-0836 1476-4687 |
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| source | Nature |
| subjects | Animals Body Weight Humanities and Social Sciences letter multidisciplinary Population Density Science Science (multidisciplinary) Seasons Snails - anatomy & histology |
| title | Population density affecting adult shell size of snail Cepaea nemoralis L |
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