Selection Mechanisms Associated with Intraspecific Shell Variation in Littorina picta (Prosobranchia: Mesogastropoda)

Struhsaker, Jeannette W.

doi:10.2307/2406874

Cited by 53 publications

(41 citation statements)

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“…In Littorina picta (now Nodilittorina hawaiiensis), another planktonic developing littorinid with sculptural variation, nodulation is maintained by selection (Struhsaker 1968 m 9~C 9 9 N N ? 9 m 9~9 9~~9 c m 9 9 9 9 c c m 9 q 9 ?…”

Section: The Low Mean Fst (Gst) Valuesmentioning

confidence: 99%

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Spatio-temporal genetic structure and gene flow between two distinct shell morphs of the planktonic developing periwinkle Littorina striata (Mollusca:Prosobranchia)

Wolf¹,

Backeljau²,

Verhagen³

1998

Mar. Ecol. Prog. Ser.

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The planktonic developing periwinkle Littonna striata produces both nodulose and smooth shells, which were onginally regarded as 2 separate species. Although both morphs occur microsympatrically, their distr~bution IS not random. Nodulose shells predominate at wave-sheltered sites, whereas smooth shells are more common at wave-exposed sites The degree of genetic slmlarity between the 2 shell types and their mcrogeographic spatio-temporal genetic structuring were investigated using allozyme electrophoresis. This indicated that-(1) both morphs share a common gene pool, (2) gene flow between populations is high and of comparable magnitude to gene flow between both morphs, (3) the population genetic structure of L. striata remains stable over a sampling period of 3 yr, and (4) genetic and morphological distances between populations are not correlated. These results thus confirm the conspecific status of the 2 shell types and suggest that shell variabLity and spatial patterning in L. striata persist in the presence of intense gene flow.

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Section: The Low Mean Fst (Gst) Valuesmentioning

confidence: 99%

“…Struhsaker 1968, Crothers 1981, Boulding & Van Alstyne 1993, Chapman 1994, Hull et al 1996, McQuaid 1996, Reid 1996. Although most of this variability can be explained in functional terms (e.g.…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal genetic structure and gene flow between two distinct shell morphs of the planktonic developing periwinkle Littorina striata (Mollusca:Prosobranchia)

Wolf¹,

Backeljau²,

Verhagen³

1998

Mar. Ecol. Prog. Ser.

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show abstract

“…Exceptions to the above relationship have been well documented (e.g., Struhsaker, 1968;Koehn et al, 1980;others). Two factors can account for such apparent exceptions: (1) Strong differences in natural selective forces among populations arising from habitat heterogeneity can result in genetic differentiation even where there is significant inter-population dispersal.…”

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confidence: 99%

POPULATION GENETICS OFTIGRIOPUS CALIFORNICUS. II. DIFFERENTIATION AMONG NEIGHBORING POPULATIONS

Burton

Feldman

1981

Evolution

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“…Such an environmental effect on morphology is commonly seen among manne invertebrates; e.g. in gastropods (Struhsaker 1968), in barnacles (Darwin 1854, N. D. Pentcheff pers. comm.…”

Section: Discussionmentioning

confidence: 96%

Ectoparasitism by a dinoflagellate (Dinoflagellata: Oodinidae) on 5 ctenophores (Ctenophora) and a hydromedusa (Cnidaria)

Mills¹,

McLean²

1991

Dis. Aquat. Org.

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Selection Mechanisms Associated with Intraspecific Shell Variation in Littorina picta (Prosobranchia: Mesogastropoda)

Cited by 53 publications

References 0 publications

Spatio-temporal genetic structure and gene flow between two distinct shell morphs of the planktonic developing periwinkle Littorina striata (Mollusca:Prosobranchia)

Spatio-temporal genetic structure and gene flow between two distinct shell morphs of the planktonic developing periwinkle Littorina striata (Mollusca:Prosobranchia)

POPULATION GENETICS OFTIGRIOPUS CALIFORNICUS. II. DIFFERENTIATION AMONG NEIGHBORING POPULATIONS

Ectoparasitism by a dinoflagellate (Dinoflagellata: Oodinidae) on 5 ctenophores (Ctenophora) and a hydromedusa (Cnidaria)

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