Sexual dimorphism in shell shape: is Pomacea canaliculata an exception or an example among Neotropical apple snails?
Abstract Sexual dimorphism has often been recorded in apple snails (Caenogastropoda Ampullariidae), but reports are concentrated in a few species, either invasive or with biocontrol potential, which sugests some taxonomic bias. To find out evolutionary and ecological correlates of sexual dimorphism...
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Academia Brasileira de Ciências
2023-04-01
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Series: | Anais da Academia Brasileira de Ciências |
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author | NICOLÁS E. TAMBURI MARÍA J. TIECHER SILVANA BURELA PABLO R. MARTÍN |
author_facet | NICOLÁS E. TAMBURI MARÍA J. TIECHER SILVANA BURELA PABLO R. MARTÍN |
author_sort | NICOLÁS E. TAMBURI |
collection | DOAJ |
description | Abstract Sexual dimorphism has often been recorded in apple snails (Caenogastropoda Ampullariidae), but reports are concentrated in a few species, either invasive or with biocontrol potential, which sugests some taxonomic bias. To find out evolutionary and ecological correlates of sexual dimorphism it is necessary to detect and quantify it but also is important to detect its absence. Our aims were to confirm or not the existence of sexual dimorphism in shell shape of Felipponea neritiniformis and Asolene platae, using Pomacea canaliculata as reference and applying the same methodology (landmark-based geometric morphometrics) and statistical power. Significant intersexual differences were only found in P. canaliculata and, in a lesser degree, in F. neritiniformis: males have larger apertures relative to body whorl and more rounded apertural outer edges than females. Female shells are larger in F. neritiniformis and P. canaliculata, but not in A. platae. Using comparable methodologies and statistical power, sexual dimorphism in shell shape is detectable in some apple snails but not in others. Interspecific variation in sexual dimorphism in the Ampullariidae is not only due to taxonomic bias and deserves more research to establish the main patterns and possible causes. |
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id | doaj.art-464d2db2277f4e4fb5f5c7bf12cd9d3e |
institution | Directory Open Access Journal |
issn | 1678-2690 |
language | English |
last_indexed | 2024-04-09T17:29:08Z |
publishDate | 2023-04-01 |
publisher | Academia Brasileira de Ciências |
record_format | Article |
series | Anais da Academia Brasileira de Ciências |
spelling | doaj.art-464d2db2277f4e4fb5f5c7bf12cd9d3e2023-04-18T07:32:37ZengAcademia Brasileira de CiênciasAnais da Academia Brasileira de Ciências1678-26902023-04-0195210.1590/0001-3765202320201519Sexual dimorphism in shell shape: is Pomacea canaliculata an exception or an example among Neotropical apple snails?NICOLÁS E. TAMBURIhttps://orcid.org/0000-0002-5644-9478MARÍA J. TIECHERhttps://orcid.org/0000-0002-7354-520XSILVANA BURELAhttps://orcid.org/0000-0002-0695-8477PABLO R. MARTÍNhttps://orcid.org/0000-0002-2987-7901Abstract Sexual dimorphism has often been recorded in apple snails (Caenogastropoda Ampullariidae), but reports are concentrated in a few species, either invasive or with biocontrol potential, which sugests some taxonomic bias. To find out evolutionary and ecological correlates of sexual dimorphism it is necessary to detect and quantify it but also is important to detect its absence. Our aims were to confirm or not the existence of sexual dimorphism in shell shape of Felipponea neritiniformis and Asolene platae, using Pomacea canaliculata as reference and applying the same methodology (landmark-based geometric morphometrics) and statistical power. Significant intersexual differences were only found in P. canaliculata and, in a lesser degree, in F. neritiniformis: males have larger apertures relative to body whorl and more rounded apertural outer edges than females. Female shells are larger in F. neritiniformis and P. canaliculata, but not in A. platae. Using comparable methodologies and statistical power, sexual dimorphism in shell shape is detectable in some apple snails but not in others. Interspecific variation in sexual dimorphism in the Ampullariidae is not only due to taxonomic bias and deserves more research to establish the main patterns and possible causes.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000301002&lng=en&tlng=enAmpullariidaegeometric morphometricsMarisaAsoleneFelipponea |
spellingShingle | NICOLÁS E. TAMBURI MARÍA J. TIECHER SILVANA BURELA PABLO R. MARTÍN Sexual dimorphism in shell shape: is Pomacea canaliculata an exception or an example among Neotropical apple snails? Anais da Academia Brasileira de Ciências Ampullariidae geometric morphometrics Marisa Asolene Felipponea |
title | Sexual dimorphism in shell shape: is Pomacea canaliculata an exception or an example among Neotropical apple snails? |
title_full | Sexual dimorphism in shell shape: is Pomacea canaliculata an exception or an example among Neotropical apple snails? |
title_fullStr | Sexual dimorphism in shell shape: is Pomacea canaliculata an exception or an example among Neotropical apple snails? |
title_full_unstemmed | Sexual dimorphism in shell shape: is Pomacea canaliculata an exception or an example among Neotropical apple snails? |
title_short | Sexual dimorphism in shell shape: is Pomacea canaliculata an exception or an example among Neotropical apple snails? |
title_sort | sexual dimorphism in shell shape is pomacea canaliculata an exception or an example among neotropical apple snails |
topic | Ampullariidae geometric morphometrics Marisa Asolene Felipponea |
url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652023000301002&lng=en&tlng=en |
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