d94f4dcb-ef30-4dea-bace-eb32fbe41f04 https://ipt.mincyt.gob.ar/resource?r=pmaculatainbiosur Native and non-native records of Pomacea maculata 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 UNS-CONICET Researcher

San Juan 671 Bahía Blanca Buenos Aires 8000 AR

2914167217 emiliaseuffert@gmail.com 0000-0002-7637-3626 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

Pablo Rafael Martín Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Airees AR

0000-0002-2987-7901 María Emilia Seuffert Instituto de Ciencias Biológicas y Biomédicas del Sur. INBIOSUR UNS-CONICET Researcher

San Juan 671 Bahía Blanca Buenos Aires 8000 AR

2914167217 emiliaseuffert@gmail.com 0000-0002-7637-3626 Valentina Asgrizze Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Aires B8000 AR

valentinaasgrizze@gmail.com 0009-0003-4527-2085 Pablo Rafael Martín Instituto de Ciencias Biológicas y Biomédicas del Sur - INBIOSUR

Bahía Blanca Buenos Airees AR

0000-0002-2987-7901 2026-09-15 eng This dataset comprises 1650 records of the freshwater snail Pomacea maculata (Caenogastropoda: Ampullariidae), gathered from bibliographic sources, museum collections, human observations and field surveys conducted by the research team. Of these occurrences, 332 correspond to the native range, while 1318 belong to invaded areas.This species is native to South America; however, it has been introduced to other parts of the world through the aquarium trade and, particularly in Asia, as a food resource for human consumption. As an invasive species, Pomacea maculata may alter food-web structure and ecosystem functioning by competing with native species, consuming aquatic plants, and providing a novel prey source for native predators. Such invasions may also lead to shifts in feeding behavior among other organisms and provide new hosts for parasites, including the rat lungworm, Angiostrongylus cantonensis. By consuming macrophytes, invasive Pomacea species can modify entire aquatic ecosystems by driving shifts between alternative stable states. occurrence GBIF Dataset Type Vocabulary: http://rs.gbif.org/vocabulary/gbif/dataset_type_2015-07-10.xml Asia Europe Freshwater snail Non-native species North America South America 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 https://ipt.mincyt.gob.ar/archive.do?r=pmaculatainbiosur This resource includes records of Pomacea maculata from both its native range in South America and its introduced range in North America, Asia and Europe. In South America, data are concentrated in Argentina, Brazil, Bolivia, Paraguay, and Uruguay. In North America, most records are concentrated in the Florida Peninsula (USA), although additional occurrences have been reported from Arizona, Texas, Louisiana, Mississippi, Alabama, and Georgia. In Asia, records have been documented in Bangladesh, Cambodia, China, Indonesia, Israel, Japan, Malaysia, Myanmar, Pakistan, Philippines, Singapore, South Korea,Thailand, Taiwan, and Vietnam. In Europe, all known occurrences are restricted to the Ebro Delta, Spain. -111.938564 137.85 40.70337 -35.438972 1943-01-01 2026-05-05 The resource documents occurrences of the species Pomacea maculata (Perry, 1810), a freshwater gastropod of the family Ampullariidae, native to South America and invasive in North America, Asia and Europe. phylum Mollusca family Ampullariidae order Gastropoda class Mesogastropoda kingdom Animalia This dataset was generated within the framework of a doctoral thesis aimed at comparing the ecological niches and potential distribution areas of ​​Pomacea scalaris, a species with no history of invasiveness , with those of the invasive species Pomacea canaliculata and Pomacea maculata, in order to better understand the traits associated with invasiveness in the genus Pomacea. To support these analyses, this dataset was designed to compile historical and current occurrence records from both the native and introduced ranges of P. maculata. All records underwent rigorous quality control to ensure reliable ecological niche modeling, distribution analyses, and assessments of potential range expansion. Additionally, this resource contributes to open-access biodiversity data initiatives through its integration into the Global Biodiversity Information Facility (GBIF). asNeeded María Emilia Seuffert Instituto de Ciencias Biológicas y Biomédicas del Sur. INBIOSUR UNS-CONICET Researcher

San Juan 671 Bahía Blanca Buenos Aires 8000 AR

2914167217 emiliaseuffert@gmail.com 0000-0002-7637-3626 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. Data acquisition from museums and biological collections. 2. Compilation of historical records obtained during previous field surveys conducted by the research team. 3. Download and review of iNaturalist observations. 4. Literature review and extraction of occurrence records. 5. Georeferencing and visual verification in QGIS. 6. Standardization according to the Darwin Core standard. 7. Taxonomic and geographic validation. 8. Final integration and curation of the dataset. The study area encompasses aquatic regions of South and North America, Asia and Europe, where Pomacea maculata has been reported. 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, specimens deposited in collections from the La Plata Museum of Natural Sciences, the Argentine Museum of Natural Sciences and Museum of Zoology of the University of São Paulo, were consulted. In addition, georeferenced occurrence records were downloaded from iNaturalist, selecting observations classified as research grade. For bibliographic data, the scientific literature was searched using the terms “Pomacea maculata”, “Ampullaria insularum”, “Ampullaria amazonica”, "Pomacea insularum", “Pomacea amazonica” and “Pomacea gigas” to identify publications that reported occurrences of the species. Finally, data collected by the resource team during previous field surveys were included. Records lacking geographic coordinates were georeferenced whenever the site description was sufficiently precise. All coordinates were visually inspected in QGIS. Records without verifiable geographic coordinates were discarded. Additionally, publications by the same authors, in which specimens were collected from the same locality, were excluded to avoid duplicate occurrence records. iNaturalist records were manually reviewed and filtered according to their validation status. Furthermore, iNaturalist records with photos in which the species could not be clearly identified were excluded. Additionally, records from Peru were excluded because Ramirez et al. 2020 demonstrated that these records correspond to Pomacea nobilis, another species within the genus. Valentina Asgrizze 0009-0003-4527-2085 María Emilia Seuffert 0000-0002-7637-3626 Pablo Rafael Martín 0000-0002-2987-7901 Freshwater gastropods are among the most threatened aquatic taxa globally, yet some species have become highly invasive pests, causing severe economic and ecological impacts. This doctoral thesis project aims to understand the mechanisms and environmental factors determining the geographic distribution of freshwater gastropods in Argentina using ecological niche modeling (ENM). The project evaluates the conservation status, bioclimatic niche, and future trends of native and vulnerable species, such as Pomacea scalaris, comparing its ecological niche with the invasive apple snails Pomacea canaliculata and Pomacea maculata. Additionally, it projects models the potential distribution of non-native invasive gastropods (such as Potamopyrgus antipodarum and Sinotaia quadrata) to identify key river basins at risk in Argentina. Project PGI-UNS 24/ZB14: "Aplicación de modelos de nicho ecológico y distribución de especies para el estudio de gasterópodos dulciacuícolas nativos, invasores y vulnerables" (PI/Director: Dr. María Emilia Seuffert), Universidad Nacional del Sur (UNS). Project PGI-UNS 24/ZB44: "Las dos caras del género Pomacea: nicho ecológico, vulnerabilidad y potencial invasivo" (PI/Director: Dr. María Emilia Seuffert), Universidad Nacional del Sur (UNS). The study area spans freshwater ecosystems across Argentina, with sampling campaigns and historical museum collection assessments focusing primarily on the provinces of Buenos Aires, Entre Ríos, Corrientes, Santa Fe, Misiones, Chaco, and Formosa. The analyses encompass native distributions, historical fossil records, and potential expansion areas across major South American river basins (e.g., La Plata Basin and southern Pampas streams). The research design combines field sampling, museum collection curation, and spatial bioclimatic modeling: 1.Field Sampling & Curation: Occurrence records are retrieved from malacological collections (MACN, FCNyM-UNLP, FML, MNHN Uruguay, MNHN Paraguay) and field surveys across 40 sampling sites. Snails, empty shells, opercula, and egg masses are georeferenced and photographed under standardized protocols. 2. Conservation & Spatial Assessment: Geospatial analyses using GeoCAT are applied to calculate the Extent of Occurrence (EOO) and Area of Occupancy (AOO) following IUCN criteria. 3. Ecological Niche Modeling (ENM): Models are developed using MaxEnt (via the 'kuenm' R package) and WorldClim bioclimatic variables (1970–2000). Projections are performed for future climate scenarios (2041–2100 under various GCMs and SSPs) and past paleoclimate conditions (since the Last Glacial Maximum). 4.Comparative Niche Analysis: Principal Component Analyses (PCA) and niche equivalence/similarity tests are conducted using the 'ecospat' R package to compare bioclimatic tolerances between native vulnerable and invasive species. 2026-07-21T14:31:21.277+00:00 dataset Asgrizze V, Seuffert M E, Soria A L, Burela S, Martín P R (2026). 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