Lucía Micaela DE, Darrigran Gustavo, Gregoric Diego Eduardo Gutiérrez
Cátedra de Malacología, Facultad de Ciencias Naturales y Museo, Universidad Nacional La Plata (UNLP), Bv. 120 1428 (1904) La Plata, Argentina.
División Zoología Invertebrados, Museo de La Plata (FCNyM-UNLP), Unidades de Investigación Anexo Museo FCNyM-UNLP, Bv. 120 1428 (1904) La Plata, Argentina.
An Acad Bras Cienc. 2023 Apr 14;95(1):e20220212. doi: 10.1590/0001-3765202320220212. eCollection 2023.
The Natural Reserve of Punta Lara (RNPL) is a protected natural area that includes Paranaense forest southernmost in the world. This area is surrounded by a densely populated and touristic sector. The objective of this work was to estimate the richness, diversity and equity of the RNPL mollusks (aquatic and terrestrial) and to establish the relationship of their species in aquatic environments. One sampling per year was carried out between 2013 and 2019. There were 32 species recorded (six are non-native species): 23 gastropods (14 freshwater, nine terrestrial) and nine bivalves. Three species were recorded in all sampling years, while six only on one occasion. The land snail genus Drepanostomella is reported for the first time in that region, and five freshwater species are reported for the first time for the RNPL. The similarity analysis of the freshwater environment separated the coastal environments from the internal environments. The environments with the highest specific richness were in internal sites of the RNPL, while the least diverse was the coast of the Río de la Plata, where the invasive species Limnoperna fortunei predominates. It is recommended to increase the conservation efforts of the different environments of the RNPL continuously threatened by urbanization.
蓬塔拉拉自然保护区（RNPL）是一个受保护的自然区域，其中包括世界最南端的巴拉那森林。该地区周边人口密集且旅游业发达。这项工作的目的是估计RNPL软体动物（水生和陆生）的丰富度、多样性和公平性，并确定它们在水生环境中物种之间的关系。2013年至2019年期间每年进行一次采样。共记录到32个物种（6个为非本地物种）：23种腹足纲动物（14种淡水的，9种陆生的）和9种双壳纲动物。在所有采样年份都记录到了3个物种，而有6个物种仅在某一次被记录到。该地区首次报道了Drepanostomella属的陆地蜗牛，RNPL也首次报道了5种淡水物种。淡水环境的相似性分析将沿海环境与内部环境区分开来。物种丰富度最高的环境位于RNPL的内部区域，而多样性最低的是拉普拉塔河沿岸，入侵物种福寿螺在那里占主导地位。建议加大对RNPL不同环境的保护力度，这些环境不断受到城市化的威胁。
