Anatomy and shell shape variability in a land snail Bostryx torallyi (Stylommatophora: Bulimulidae)
Fuente:
Redalyc
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Universidad de Costa Rica
2020
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1876430439774683136 |
|---|---|
| author | María José Miranda |
| author_facet | María José Miranda |
| contents | Anatomy and shell shape variability in a land snail Bostryx torallyi (Stylommatophora: Bulimulidae) María José Miranda Biología Bolivia Altitude Argentina relative warp geometric morphometric Introduction: The gastropod Bostryx torallyi shows high variability in shell shape and coloration. Subspecies of this organism have been described based on shell characters but, since they were slightly different, they were synonymized afterwards. Until now, shell variability has been analyzed only descriptively and its anatomy is still unknown. Objective: In this study, I provide anatomical information of B. torallyi and apply a geometric morphometric analysis to evaluate the shell shape variation among specimens. Methods: To accomplish this, type material and numerous lots were examined and dissected out. Additionally, relative warp analysis, based on 9 landmarks in ventral view of the shell, was performed using 80 specimens of 9 localities from Bolivia and Argentina. Results: According to our results, geometric morphometrics is a suitable method to evaluate differences in shell shape among localities; for instance, distinctions in the shell were noticeable between gastropods of low and high altitudes. On the other hand, it was established that the coloration of this species is independent of large-scale factors since the examined specimens came from environments with similar conditions. Furthermore, the sculpture of the protoconch and anatomy of B. torallyi coincided with the other Argentinian species of the genus. Conclusions: Therefore, I concluded that a geometric morphometric analysis of shell shape is a good complement to traditional qualitative description of the characteristics of the shell in this species. 2020 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44965893017 https://www.redalyc.org/journal/449/44965893017/ https://www.redalyc.org/journal/449/44965893017/html/ https://www.redalyc.org/journal/449/44965893017/44965893017.epub https://www.redalyc.org/journal/449/44965893017/movil 10.15517/RBT.V68I1.37424 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.68 |
| format | Artículo científico |
| id | redalyc_44965893017 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Anatomy and shell shape variability in a land snail Bostryx torallyi (Stylommatophora: Bulimulidae) María José Miranda Biología Bolivia Altitude Argentina relative warp geometric morphometric Anatomy and shell shape variability in a land snail Bostryx torallyi (Stylommatophora: Bulimulidae) María José Miranda Biología Bolivia Altitude Argentina relative warp geometric morphometric Introduction: The gastropod Bostryx torallyi shows high variability in shell shape and coloration. Subspecies of this organism have been described based on shell characters but, since they were slightly different, they were synonymized afterwards. Until now, shell variability has been analyzed only descriptively and its anatomy is still unknown. Objective: In this study, I provide anatomical information of B. torallyi and apply a geometric morphometric analysis to evaluate the shell shape variation among specimens. Methods: To accomplish this, type material and numerous lots were examined and dissected out. Additionally, relative warp analysis, based on 9 landmarks in ventral view of the shell, was performed using 80 specimens of 9 localities from Bolivia and Argentina. Results: According to our results, geometric morphometrics is a suitable method to evaluate differences in shell shape among localities; for instance, distinctions in the shell were noticeable between gastropods of low and high altitudes. On the other hand, it was established that the coloration of this species is independent of large-scale factors since the examined specimens came from environments with similar conditions. Furthermore, the sculpture of the protoconch and anatomy of B. torallyi coincided with the other Argentinian species of the genus. Conclusions: Therefore, I concluded that a geometric morphometric analysis of shell shape is a good complement to traditional qualitative description of the characteristics of the shell in this species. 2020 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44965893017 https://www.redalyc.org/journal/449/44965893017/ https://www.redalyc.org/journal/449/44965893017/html/ https://www.redalyc.org/journal/449/44965893017/44965893017.epub https://www.redalyc.org/journal/449/44965893017/movil 10.15517/RBT.V68I1.37424 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.68 |
| title | Anatomy and shell shape variability in a land snail Bostryx torallyi (Stylommatophora: Bulimulidae) |
| topic | Biología Bolivia Altitude Argentina relative warp geometric morphometric |
| url | https://www.redalyc.org/articulo.oa?id=44965893017 https://www.redalyc.org/journal/449/44965893017/ https://www.redalyc.org/journal/449/44965893017/html/ https://www.redalyc.org/journal/449/44965893017/44965893017.epub https://www.redalyc.org/journal/449/44965893017/movil |