https://ipt.mincyt.gob.ar/resource?r=pomacea_scalaris Valentina Asgrizze Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Aires B8000 AR

valentinaasgrizze@gmail.com 0009-0003-4527-2085 María Emilia Seuffert Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Aires AR

0000-0002-7637-3626 Pablo Rafael Martín Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Airees AR

0000-0002-2987-7901 Abril Lujan Soria Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Aires AR

Silvana Burela Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Aires AR

Valentina Asgrizze Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Aires B8000 AR

valentinaasgrizze@gmail.com 0009-0003-4527-2085 Valentina Asgrizze Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Aires AR

valentinaasgrizze@gmail.com 0009-0003-4527-2085 user 2025-07-25 eng This dataset comprises 175 records of the freshwater snail Pomacea scalaris (Caenogastropoda: Ampullariidae), gathered from bibliographic sources, human observations, museum specimens and field surveys conducted by the responsible research team.This species is native to Río de la Plata Basin (South America); however, it was accidentally introduced into Southeast Asia along with Pomacea canaliculata and Pomacea maculata. While the latter two species have spread widely and caused significant damage to aquatic crops and  to biodiversity, Pomacea scalaris has not exhibited invasive behavior. The primary purpose of this database is to document both historical and current occurrence records of the species, across its native and introduced range, in order to provide key information for the analysis of distribution partterns, ecological niche modeling, and risk assessment of potential range expansion. Occurrence GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml Freshwater mollusks South America Taiwan. n/a This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License. Creative Commons Attribution 4.0 International https://spdx.org/licenses/CC-BY-4.0.html CC-BY-4.0 This resource includes records of Pomacea scalaris from both its native range in South America and its introduced range in Taiwan. In South America, data are concentrated in Argentina, Brazil, Paraguay, and Uruguay. In Taiwan, records are located in various regions of the southwestern and west-central parts of the country. The dataset covers diverse aquatic environments, including both natural and human-modified habitats. -60.75285 120.60175 23.56523 -35.008141 1913-03-01 2025-07-02 The resource documents occurrences of the species Pomacea scalaris (d'Orbigny,1835), a freshwater gastropod mollusk of the family Ampullariidae, found in aquatic environments of South America and as an invasive species in Taiwan species Pomacea scalaris This dataset was generated within the framework of a doctoral thesis focused on assessing the conservation status and geographic distribution of Pomacea scalaris. Its primary objective is to document both historical and current occurrence records of the species, across its native and invasive ranges, in order to provide key information for the analysis of distribution patterns, ecological niche modeling, and risk assessment of potential expansion. Additionally, it aims to contribute to open-access biodiversity data initiatives through its integration into platforms such as GBIF. Pomacea scalaris (d'Orbigny, 1835) is a freshwater gastropod native to South America. It has a solid, umbilicated shell with up to five angular whorls, convex below the keel and somewhat flattened above it. The aperture is oval, with a thin and narrow columellar margin, slightly reflected at the base. The shell surface is dark brown, with lighter coloration fading along the keel. Oviposition occurs above the waterline; the orange-pink, polyhedral eggs, which have calcareous shells, are cemented together into conspicuous masses. P. scalaris exhibits a restricted and fragmented distribution. It is commonly found along the Argentine margin of the Rio de la Plata and extends through the Lower and Middle Paraná River, reaching the Pantanal (the world's largest wetland, primarily in Brazil but also extending into parts of Paraguay and Bolivia) via the Paraguay River. However, it is absent from the Upper Paraná and Uruguay Rivers. Despite its regional presence and ecological relevance as prey for molluscivorous birds, the conservation status of the species has not been formally assessed, either nationally or globally. Its occurrence outside South America is limited to an accidental introduction in Taiwan, where it has not displayed invasive behavior. Unlike other Pomacea species such as Pomacea canaliculata and Pomacea maculata, which have been extensively studied due to their invasive potential, P. scalaris has received limited scientific attention. Many aspects of its natural history, ecology, life cycle, and current distribution remain poorly understood. This resource aims to enhance knowledge of a poorly studied and potentially vulnerable species, and to support future efforts in monitoring, conservation, and management of continental mollusks. The dataset is provided in tabular format (.csv), structured according to the Darwin Core standard. Each row represents a presence record of Pomacea scalaris, and the columns correspond to standardized fields such as scientificName, decimalLatitude, decimalLongitude, eventDate, basisOfRecord, institutionCode, recordedBy, identifiedBy, among others. Spreadsheets (Microsoft Excel and Google Sheets) were used for the initial data integration and editing. The transformation to Darwin Core format was carried out using the Integrated Publishing Toolkit (IPT). No scripts or additional software were used for preprocessing. The dataset provides georeferenced information suitable for further analysis using various tools such as RStudio, MaxEnt, GeoCAT, among others. This resource is designed to be reusable in other ecological and conservation research efforts. asNeeded Valentina Asgrizze Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Aires B8000 AR

valentinaasgrizze@gmail.com 0009-0003-4527-2085 1. Request and data collection from museums and biological collections. 2. Review of historical records from previous samplings conducted by the team. 3. Search and download of relevant observations from iNaturalist, excluding those lacking photos that allowed clear species identification or originating from areas where the species could be confused with others. 4. Review and data extraction from scientific literature. 5. Georeferencing and visual verification using QGIS of records that did not originally include geographic coordinates. 6. Data standardization according to the Darwin Core schema. 7. Taxonomic and geographic validation. 8. Final integration and curation of the dataset. The study area encompasses aquatic regions of South America and East Asia (Taiwan), where the presence of Pomacea scalaris has been recorded. The environments considered include both natural and artificial freshwater bodies such as rivers, lagoons, streams, and canals. The records included in this dataset were obtained using multiple strategies. First, collections from the La Plata Museum of Natural Sciences and the Argentine Museum of Natural Sciences were consulted. In addition, georeferenced records were extracted from iNaturalist, selecting observations with appropriate quality grades. For bibliographic data, academic sources were searched using the terms “Pomacea scalaris” and “Ampullaria scalaris,” identifying publications that reported occurrences of the species. Finally, data collected by the resource team during previous field campaigns were included. Records lacking geographic coordinates were georeferenced whenever the site description was sufficiently precise. A visual verification was then performed using QGIS Records without verifiable geographic coordinates were discarded. Additionally, works authored by the same individuals, in which specimens were collected from the same locality, were excluded to avoid duplication of the same specimen. iNaturalist records were manually reviewed and filtered based on validation level. Furthermore, iNaturalist records with photos in which the species could not be clearly identified were excluded, as well as records from locations where the species could be easily confused with others. 2025-07-14T15:40:38.224+00:00 dataset Asgrizze V, Seuffert M E, Martín P R, Soria A L, Burela S (2025). Native and non-native records of Pomacea scalaris (d'Orbigny, 1835). Version 1.1. Instituto de Ciencias Biológicas y Biomédicas del Sur (INBIOSUR). Occurrence dataset. https://ipt.mincyt.gob.ar/resource?r=pomacea_scalaris&v=1.1 Hylton Scott MI (1958) Estudio morfológico y taxonómico de los ampulláridos de la República Argentina. Revista del Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”, Ciencias Zoológicas 3:233-333. Martin, S. M. (1991). Ciclo anual de la gametogénesis de Ampullaria scalaris d’Orb (Mollusca: Gastropoda: Ampullariidae). Anales de la Sociedad Científica Argentina, 221, 1–8. Martin, S. M. (1993). Características poblacionales de Ampullaria scalaris d’Orbigny, 1835 (Mollusca, Gastropoda, Ampullariidae) en las Canteras de Los Talas (Berisso, Buenos Aires). Studies on Neotropical Fauna and Environment, 28(4), 223–231. Fernandez, Monica Ammon, Santos, Sonia Barbosa dos, Silva, Elizangela Feitosa da, & Thiengo, Silvana Carvalho. (2023). Composition and distribution of freshwater mollusks in the Pantanal biome, Mato Grosso State, Brazil. Revista Pan-Amazônica de Saúde, 14, e202301357. Epub 02 de outubro de 2023. Röhrdanz Rosa, A. E. (2017). Los caracoles manzana (Ampullariidae; Gastropoda; Mollusca) en Uruguay: revisión y actualización de su distribución. Tesina de Grado Licenciatura en Cs. Biológicas. Univ. de la República, Uruguay. Martín, S. M., & Negrete, L. H. L. (2007). Radular ultrastructure of South American Ampullariidae (Gastropoda: Prosobranchia). Brazilian journal of Biology, 67, 721-726. Ituarte, S., Dreon, M. S., Ceolín, M., & Heras, H. (2008). Isolation and characterization of a novel perivitellin from the eggs of Pomacea scalaris (Mollusca, Ampullariidae). Molecular reproduction and development, 75(9), 1441-1448. Dellagnola, F. A., Rodriguez, C., Castro-Vazquez, A., & Vega, I. A. (2019). A multiple comparative study of putative endosymbionts in three coexisting apple snail species. PeerJ, 7, e8125. Brola, T. R. (2023). Estrategias reproductivas de moluscos gasterópodos (Doctoral dissertation, Universidad Nacional de La Plata). Villarreal, R. G. (2024). Desarrollo y Comparación de Modelos Morfométricos Predictores del Sexo en Dos Especies de Pomacea (Caenogastropoda: Ampullariidae) (Doctoral dissertation, Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales). Tanaka, M. O., Souza, A. L., & Módena, É. S. (2006). Habitat structure effects on size selection of snail kites (Rostrhamus sociabilis) and limpkins (Aramus guarauna) when feeding on apple snails (Pomacea spp.). Acta Oecologica, 30(1), 88-96. Callil, C. T., & Junk, W. J. (2001). Aquatic Gastropods as Mercury Indicatorsin the Pantanal of Poconé Region (Mato Grosso, Brasil). Water, Air, and Soil Pollution, 125, 319-330. Vieira, L. M., Alho, C. J., & Ferreira, G. A. (1995). Contaminação por mercúrio em sedimento e em moluscos do Pantanal, Mato Grosso, Brasil. Revista Brasileira de Zoologia, 12, 663-670. Wu, Y.-T. (2006). Reproductive biology and temperature tolerance of Pomacea canaliculata and Pomacea scalaris [Master’s thesis, National Sun Yat-sen University]. National Digital Library of Theses and Dissertations in Taiwan. https://hdl.handle.net/11296/hf3v6g Li, M.-C. (2008). Ecological comparisons of growth and feeding between Pomacea canaliculata and Pomacea scalaris [Master’s thesis, National Sun Yat-sen University]. National Digital Library of Theses and Dissertations in Taiwan. https://hdl.handle.net/11296/w992y8 Chiu, Y. W., Huang, D. J., Shieh, B. S., Gan, Y. C., Chen, Y. C., Jen, C. H., ... & Liang, S. H. (2023). Current Status and Conservation of Springs in Taiwan: Water Quality Assessment and Species Diversity of Aquatic Animals. Diversity, 15(3), 332. Fan, P. C., Wu, C. C., Yen, C. W., & Huang, P. Survival of Pomacea Species out of Water Kept in 鈞. C Laboratory Condition. Wu, J. Y., Meng, P. J., Liu, M. Y., Chiu, Y. W., & Liu, L. L. (2010). A high incidence of imposex in Pomacea apple snails in Taiwan: a decade after triphenyltin was banned. Zoological Studies, 49(1), 85-93. Banerjee, P., Dey, G., Maity, J. P., Stewart, K. A., Sharma, R. K., Chan, M. W., ... & Chen, C. Y. (2024). The unseen invaders: Tracking phylogeographic dynamics and genetic diversity of cryptic Pomacea canaliculata and P. maculata (Golden apple snails) across Taiwan. Ecology and Evolution, 14(4), e11268. Quintana (1982) Catálogo preliminar de la malacofauna del Paraguay. Volumen 11,Tema 3 de Revista del Museo Argentino de Ciencias Naturales Bernardino Rivadavia e Instituto Nacional de Investigación de las Ciencias Naturales. Zoología, ISSN 0373-9073 Darrigran G, Damborenea C (2024). Zoología Invertebrados - Malacología. Version 1.2. Museo de La Plata. Occurrence dataset. GBIF.org (22 July 2025) GBIF Occurrence Download https://doi.org/10.15468/dl.vp2wr2 GBIF.org (22 July 2025) GBIF Occurrence Download https://doi.org/10.15468/dl.93x8wr GBIF.org (23 July 2025) GBIF Occurrence Download https://doi.org/10.15468/dl.89ygkp https://ipt.mincyt.gob.ar/resource?id=pomacea_scalaris/v1.1.xml