Larval strategies and connectivity in marine gastropods
Connectivity is defined as the property and degree of interchange between populations. In the marine environment, this property is strongly influenced by the strategy of larval development. This is especially true for benthic organisms, which have a sessile adult lifestyle and can rely only on the l...
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ftunivromairis:oai:iris.uniroma1.it:11573/872110 2024-02-04T09:55:30+01:00 Larval strategies and connectivity in marine gastropods FASSIO, GIULIA RUSSINI, VALERIA MODICA, MARIA VITTORIA OLIVERIO, Marco Marzio Zapparoli, Maria Cristina Belardinelli Fassio, Giulia Russini, Valeria Modica, MARIA VITTORIA Oliverio, Marco 2015 STAMPA http://hdl.handle.net/11573/872110 eng eng Università degli Studi della Tuscia Centro Studi Alpino country:ITA place:Pieve Tesino (TN) info:eu-repo/semantics/altIdentifier/isbn/978-88-903595-4-5 ispartofseries:Quaderni del Centro Studi Alpino ispartofbook:Proceedings of the 76th National Conference of the Unione Zoologica Italiana 76th National Conference of the Unione Zoologica Italiana volume:IV firstpage:42 lastpage:42 numberofpages:1 http://hdl.handle.net/11573/872110 info:eu-repo/semantics/conferenceObject 2015 ftunivromairis 2024-01-10T18:03:44Z Connectivity is defined as the property and degree of interchange between populations. In the marine environment, this property is strongly influenced by the strategy of larval development. This is especially true for benthic organisms, which have a sessile adult lifestyle and can rely only on the larval phase for dispersal. Larval developments can be classified into two main types: planktotrophic and non-planktotrophic (mostly lecithothrophic) development. It is reasonable to hypothesize that different larval developments produce different patterns of connectivity. Several hypotheses can be tested on the relationship between genetic connectivity and duration of the larval phase: (i) isolation by distance occurs in species with non- planktotrophic development and not in species with planktotrophic development; (ii) genetic diversity and variance distribution are different in the two classes: low diversity and larger intrapopulation variance with planktotrophic development; high diversity and larger interpopulation variance with lecithothrophic development; (iii) different phylogeographic structure: phylogenetic trees not geographically structured with planktotrophic development and geographically structured with lecithothrophic development; (iv) different haplotypes networks: few haplotypes shared by most with planktotrophic development, and more haplotypes shared by geographically related groups with the lecithothrophic development. We first positively tested these hypotheses on literature datasets of three species of the genus Crepidula with different larval developments. Then we applied the same approaches on three original case studies: the sibling species Columbella rustica (Mediterranean, lecithotrophic) and C. adansoni (Atlantic, planktotrophic); and the Antarctic Capulus subcompressus and Marseniopsis spp. (both planktotrophic). All analyses positively tested the hypotheses of relationship between genetic connectivity and duration of the larval phase. Noteworthy, in Antarctica the planktotrophic ... Conference Object Antarc* Antarctic Antarctica Sapienza Università di Roma: CINECA IRIS Antarctic The Antarctic |
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Sapienza Università di Roma: CINECA IRIS |
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English |
description |
Connectivity is defined as the property and degree of interchange between populations. In the marine environment, this property is strongly influenced by the strategy of larval development. This is especially true for benthic organisms, which have a sessile adult lifestyle and can rely only on the larval phase for dispersal. Larval developments can be classified into two main types: planktotrophic and non-planktotrophic (mostly lecithothrophic) development. It is reasonable to hypothesize that different larval developments produce different patterns of connectivity. Several hypotheses can be tested on the relationship between genetic connectivity and duration of the larval phase: (i) isolation by distance occurs in species with non- planktotrophic development and not in species with planktotrophic development; (ii) genetic diversity and variance distribution are different in the two classes: low diversity and larger intrapopulation variance with planktotrophic development; high diversity and larger interpopulation variance with lecithothrophic development; (iii) different phylogeographic structure: phylogenetic trees not geographically structured with planktotrophic development and geographically structured with lecithothrophic development; (iv) different haplotypes networks: few haplotypes shared by most with planktotrophic development, and more haplotypes shared by geographically related groups with the lecithothrophic development. We first positively tested these hypotheses on literature datasets of three species of the genus Crepidula with different larval developments. Then we applied the same approaches on three original case studies: the sibling species Columbella rustica (Mediterranean, lecithotrophic) and C. adansoni (Atlantic, planktotrophic); and the Antarctic Capulus subcompressus and Marseniopsis spp. (both planktotrophic). All analyses positively tested the hypotheses of relationship between genetic connectivity and duration of the larval phase. Noteworthy, in Antarctica the planktotrophic ... |
author2 |
Marzio Zapparoli, Maria Cristina Belardinelli Fassio, Giulia Russini, Valeria Modica, MARIA VITTORIA Oliverio, Marco |
format |
Conference Object |
author |
FASSIO, GIULIA RUSSINI, VALERIA MODICA, MARIA VITTORIA OLIVERIO, Marco |
spellingShingle |
FASSIO, GIULIA RUSSINI, VALERIA MODICA, MARIA VITTORIA OLIVERIO, Marco Larval strategies and connectivity in marine gastropods |
author_facet |
FASSIO, GIULIA RUSSINI, VALERIA MODICA, MARIA VITTORIA OLIVERIO, Marco |
author_sort |
FASSIO, GIULIA |
title |
Larval strategies and connectivity in marine gastropods |
title_short |
Larval strategies and connectivity in marine gastropods |
title_full |
Larval strategies and connectivity in marine gastropods |
title_fullStr |
Larval strategies and connectivity in marine gastropods |
title_full_unstemmed |
Larval strategies and connectivity in marine gastropods |
title_sort |
larval strategies and connectivity in marine gastropods |
publisher |
Università degli Studi della Tuscia Centro Studi Alpino |
publishDate |
2015 |
url |
http://hdl.handle.net/11573/872110 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/isbn/978-88-903595-4-5 ispartofseries:Quaderni del Centro Studi Alpino ispartofbook:Proceedings of the 76th National Conference of the Unione Zoologica Italiana 76th National Conference of the Unione Zoologica Italiana volume:IV firstpage:42 lastpage:42 numberofpages:1 http://hdl.handle.net/11573/872110 |
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