Population genetic consequences of larval dispersal mode and hydrography: a case study with bryozoans
Genetic analysis of the marine bryozoans Celleporella hyalina and Electra pilosa using the RAPD technique revealed population structuring corresponding to the contrasting modes of larval dispersal. Samples of C. hyaline exhibited genetic differentiation over distances as small as 10 m, concordant wi...
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| Veröffentlicht in: | Marine biology 2001-05, Vol.138 (5), p.1037-1042 |
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| creator | GOLDSON, A. J HUGHES, R. N GLIDDON, C. J |
| description | Genetic analysis of the marine bryozoans Celleporella hyalina and Electra pilosa using the RAPD technique revealed population structuring corresponding to the contrasting modes of larval dispersal. Samples of C. hyaline exhibited genetic differentiation over distances as small as 10 m, concordant with the limited dispersal predicted by a simulation model, based on the short pelagic phase of the lecithotrophic larvae and the local hydrography. In contrast, E. pilosa showed high levels of genetic heterogeneity only over much larger spatial scales, commensurate with its production of comparatively long-lived planktotrophic larvae. The population differentiation observed between samples of E. pilosa, collected from sites 70 km apart, is reconcilable with coastal water currents and frontal systems that restrict the exchange of water masses between the two sites. Hydrographic conditions and discontinuous distribution of suitable substrata therefore are seen to constrain gene flow, creating opportunities for local genetic differentiation despite the high dispersal potential of pelagic larvae. |
| doi_str_mv | 10.1007/s002270000511 |
| format | Article |
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The population differentiation observed between samples of E. pilosa, collected from sites 70 km apart, is reconcilable with coastal water currents and frontal systems that restrict the exchange of water masses between the two sites. Hydrographic conditions and discontinuous distribution of suitable substrata therefore are seen to constrain gene flow, creating opportunities for local genetic differentiation despite the high dispersal potential of pelagic larvae.</description><identifier>ISSN: 0025-3162</identifier><identifier>EISSN: 1432-1793</identifier><identifier>DOI: 10.1007/s002270000511</identifier><identifier>CODEN: MBIOAJ</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Animal populations ; Animals ; Biological and medical sciences ; Case studies ; Celleporella hyalina ; Dispersal ; Ectoprocta ; Electra pilosa ; Experiments ; Fucus serratus ; Fundamental and applied biological sciences. Psychology ; Genetics ; Genetics of eukaryotes. 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The population differentiation observed between samples of E. pilosa, collected from sites 70 km apart, is reconcilable with coastal water currents and frontal systems that restrict the exchange of water masses between the two sites. Hydrographic conditions and discontinuous distribution of suitable substrata therefore are seen to constrain gene flow, creating opportunities for local genetic differentiation despite the high dispersal potential of pelagic larvae.</description><subject>Animal populations</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Case studies</subject><subject>Celleporella hyalina</subject><subject>Dispersal</subject><subject>Ectoprocta</subject><subject>Electra pilosa</subject><subject>Experiments</subject><subject>Fucus serratus</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Genetics</subject><subject>Genetics of eukaryotes. Biological and molecular evolution</subject><subject>Hydrography</subject><subject>Invertebrata</subject><subject>Laminaria saccharina</subject><subject>Larvae</subject><subject>Marine</subject><subject>Marine biology</subject><subject>Population genetics, reproduction patterns</subject><issn>0025-3162</issn><issn>1432-1793</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNqN0c-L1TAQB_AgCj5Xj96DiHipJpMmab3J4i9Y0IOey2wy3delL6mZVql_vZHdg3oQ55KBfOYLwwjxWKsXWin_kpUC8KqW1fqOOOjWQKN9b-6KQ_2yjdEO7osHzNfVgAdzEPQpL9uM65STvKJE6xRkyInp60YpEMs8yhnLN5xlnHihwrU75UgSU5THPZZ8VXA57q8kyoBMktct7vL7tB7lZdnzj4yJH4p7I85Mj27fM_Hl7ZvP5--bi4_vPpy_vmiC6dzadNGARROhcyF2l2gUKN1rC6Z3vrWaIETraMQeR9BaO2sBHAIF31LfanMmnt3kLiXXBXgdThMHmmdMlDcedGedMq7_D6h81ytX4fN_Qwva9Na7ttInf9HrvJVU9x1A1bzWK19Rc4NCycyFxmEp0wnLPmg1_Lri8McVq396G4occB4LpjDxb0O2NbV-Aii7mos</recordid><startdate>20010518</startdate><enddate>20010518</enddate><creator>GOLDSON, A. 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| subjects | Animal populations Animals Biological and medical sciences Case studies Celleporella hyalina Dispersal Ectoprocta Electra pilosa Experiments Fucus serratus Fundamental and applied biological sciences. Psychology Genetics Genetics of eukaryotes. Biological and molecular evolution Hydrography Invertebrata Laminaria saccharina Larvae Marine Marine biology Population genetics, reproduction patterns |
| title | Population genetic consequences of larval dispersal mode and hydrography: a case study with bryozoans |
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