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9 results for “Partula”
Figure 1 in Partula gibba feeding on Mariana fruit bat ejecta of Pandanus sp. fruit on Sarigan, Northern Mariana Islands
Figure 1. Two Partula gibba individuals consuming Mariana fruit bat ejecta comprised of masticated Pandanus sp. fruits. Photos by Lainie Berry.
Figure 2 in Partula gibba feeding on Mariana fruit bat ejecta of Pandanus sp. fruit on Sarigan, Northern Mariana Islands
Figure 2. Clusters of Partula gibba on the underside of branches of Erythrina variegata. Photos by Megan Dalton.
Figure 1 in Partula desolata sp. nov. (Pulmonata: Partulidae), an extinct land snail from Rota, Mariana Islands, Micronesia
Figure 1. Map of the Mariana Islands with islands mentioned in the text labeled and a map of Rota showing approximate locations of the collecting sites (see text for coordinates).
Figure 2 in Partula desolata sp. nov. (Pulmonata: Partulidae), an extinct land snail from Rota, Mariana Islands, Micronesia
Figure 2. Partula desolata Bauman & Kerr, sp. nov. Holotype, BPBM 252143-A, Payapai Cave, Alaguan region, Rota Island, Mariana Islands. Scale bar = 10 mm. A.–C. Apertural, adapertural, apical views, respectively. D. Slightly oblique basal view exposing the umbilical pit and a thickened and reflexed, but damaged, basal peristome.
Figure 3 in Partula desolata sp. nov. (Pulmonata: Partulidae), an extinct land snail from Rota, Mariana Islands, Micronesia
Figure 3. Comparison of Partula desolata sp. nov. to P. gibba and P. thalia, showing disparity in size and development of peristome. Scale bar = 10 mm. P. desolata sp. nov., Rota, Mariana Islands, paratypes: A. UGI 3001, B. UF 449332 and C. UF 449333. D. P. gibba, Rota, UF 449334. E. P. thalia, Raiatea, Society Islands, UF 112145.
Data from: Deconstructing an infamous extinction crisis: Survival of Partula species on Moorea and Tahiti
Eleven of eighteen Society Island Partula species endemic to the Windward Island subgroup (Moorea and Tahiti) have been extirpated by an ill-advised biological control program. The conservation status of this critically endangered tree snail radiation is of considerable import, but is clouded by taxonomic uncertainty due to the extensive lack of congruence among species designations, diagnostic morphologies and molecular markers. Using a combination of museum, captive, and remnant wild snails, we obtained the first high-resolution nuclear genomic perspective of the evolutionary relationships and survival of fourteen Windward Island Partula species, totaling 93 specimens. We analyzed ~1,607-28,194 nuclear genomic loci collected with the double digest Restriction-site Associated sequencing method. Results from phylogenomic trees, species estimation, and population assignment tests yielded monophyly of the Windward Island subgroup. Within this group, two well-supported clades encompassing five species complexes were recovered. Clade 1 was restricted to Tahiti and contained two species complexes: "P. affinis" (three species) and "P. otaheitana" (five species). Clade 2 occurred on Moorea and on Tahiti and consisted of three species complexes: one Tahitian, "P. clara/P. hyalina"; the other two, "P. taeniata" (three species) and "P. suturalis" (six species), Moorean. Our genomic results largely corroborated previous mitochondrial DNA survival estimates for Moorea and Tahiti, with all five species complexes having members surviving in captivity and/or as remnant wild populations, although the details vary in each case. Continued, proactive conservation and management may yet ensure a phylogenetically-representative survival of the fabled Partula species of Moorea and Tahiti.
Data from: Moorean and Tahitian Partula tree snail survival after a mass extinction: new genomic insights using museum specimens
Natural history museum collections provide a biodiversity window into the past and are of particular importance to the study of extinction-impacted clades such as the Pacific Island tree snail family Partulidae. Deliberate introduction of the predatory rosy wolf snail Euglandina rosea in the late 20th century led to the extinction/extirpation of 55/61 Society Island Partulidae species. In this study, we phylogenomically investigated the inter-relationships of the three surviving Society Island valley Partula species: P. taeniata (Moorea), P. clara and P. hyalina (Tahiti). All three formed a distinct clade in earlier mitochondrial phylogenies. Using Next Generation Sequencing (NGS) double digested Restriction Associated DNA sequencing (ddRADseq), we found that 46-year-old lyophilized museum specimens produced similar numbers of reads, sequencing depth, and loci as 10-year old ethanol-preserved collections. Phylogenomic trees indicated that Tahitian P. clara and P. hyalina are the result of a single founding lineage from Moorea, contrasting previous mitochondrial results and clarifying the enigmatic taxonomic status of P. c. incrassa. Our study highlights the utility and viability of NGS techniques for museum specimens and their increased resolution of evolutionary patterns. Sampling will be expanded to include the remaining Society Island partulid taxa to further explore the evolutionary history of this radiation.
Data from: Deconstructing an infamous extinction crisis: Survival of Partula species on Moorea and Tahiti
Open the record for dataset details and reuse information.
Data from: Moorean and Tahitian Partula tree snail survival after a mass extinction: new genomic insights using museum specimens
Open the record for dataset details and reuse information.
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