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首页> 美国卫生研究院文献>Journal of Insect Science >Spider Diversity on the Oceanic Island of Fernando De Noronha Brazil and Implications for Species Conservation
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Spider Diversity on the Oceanic Island of Fernando De Noronha Brazil and Implications for Species Conservation

机译：巴西大费尔南多·迪诺罗尼亚群岛上的蜘蛛多样性及其对物种保护的意义

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Fernando de Noronha is an oceanic archipelago in Brazil that has been subjected to major alterations in its natural habitat, as it is exposed to increasing rates of tourism. This research aimed at performing the first survey of spider species on the main island, focusing on the environmental occupation and conservation status of local species. Spiders were sampled through pitfall traps, beating sheets, and active collection in the dry (October 2005) and rainy (April 2006) seasons in several parts of the island, such as urban and protected areas. A total of 1,532 adult spiders from 44 species distributed in 20 families were collected. Forty-two species are newly recorded on the archipelago, of which 10 appear to be native. Theridiidae and Salticidae were the richest families, with seven and five species respectively. Hogna sp., probably an endemic Lycosidae species, had the highest abundance throughout the study (17%). Several non-native species were found, especially in the surroundings of human habitations. Areas exposed to human settlements had higher diversity indices and evenness values when compared to preserved areas. Most species were classified as being diurnal space web-weavers. The results suggest that non-native species seemed to be established on the island, due mainly to the traffic of people and goods from the continent.
机译：费尔南多·德诺罗尼亚群岛（Fernando de Noronha）是巴西的一个海洋群岛，其自然栖息地发生了重大变化，因为它面临着越来越多的旅游业。这项研究旨在对主要岛屿上的蜘蛛物种进行首次调查，重点是当地物种的环境占用和保护状况。通过陷阱陷阱，防暴表和在该岛几个地区（如城市和保护区）的雨季（2005年10月）和雨季（2006年4月）积极收集蜘蛛来进行采样。总共收集了分布在20个科中的来自44个物种的1,532只成年蜘蛛。群岛上新记录了42种，其中10种似乎是本地人。兽科和盐科是最丰富的科，分别有七种和五种。 Hogna sp。，可能是地方性Lycosidae物种，在整个研究中的丰度最高（17％）。发现了几种非本地物种，尤其是在人类居住环境中。与保护区相比，暴露于人类住区的区域具有更高的多样性指数和均匀度值。大多数物种被归类为昼夜空间网织者。结果表明，该岛上似乎建立了非本地物种，这主要是由于来自该大陆的人员和货物的运输。

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