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Geographic expansion and dominance of the invading species Drosophila nasuta (Diptera, Drosophilidae) in Brazil
Journal of Insect Conservation ( IF 1.9 ) Pub Date : 2020-02-14 , DOI: 10.1007/s10841-020-00219-1
Danubia Guimarães Silva , Hermes José Schmitz , Hermes Fonseca de Medeiros , Cláudia Rohde , Martín Alejandro Montes , Ana Cristina Lauer Garcia

Biological invasions are among the main threats to biodiversity and ecosystemic services throughout the world, with the capacity for causing long-term impacts and the extinction of species. In recent decades, a growing number of invasions by insects have occurred, including flies of the family Drosophilidae. A recent case in South America is the arrival of Drosophila nasuta in Brazil. This species is native to southern Asia and has spread to Africa, islands of the Indian Ocean and Hawaii. We detected the species in the northern portion of the Atlantic Forest in Brazil, 1600 km from the closest previous record. We confirm the expansion of D. nasuta in this country using morphological and molecular genetic data for species identification. Through bi-monthly sampling in a conserved forest and on two plantations (bamboo and eucalyptus) over the course of one year, approximately 42,000 drosophilids were captured, more than 5000 of which were D. nasuta. The species was found in all sampling periods and demonstrated a preference for the conserved forest. In this environment, we detected a significantly greater abundance of D. nasuta in the dry season, which is in agreement with the seasonal pattern described for other exotic species of drosophilids in the northern portion of the Atlantic Forest. The successful invasion of D. nasuta in this portion of the biome is a serious warning sign for the Atlantic Forest, which has been largely destroyed and is one of the world hotspots for the conservation of biodiversity.

中文翻译:

巴西入侵物种 Drosophila nasuta(双翅目,果蝇科)的地理扩展和优势

生物入侵是全世界生物多样性和生态系统服务的主要威胁之一,具有造成长期影响和物种灭绝的能力。近几十年来,发生了越来越多的昆虫入侵,包括果蝇科的苍蝇。南美洲最近的一个案例是 Drosophila nasuta 到达巴西。该物种原产于南亚,并已传播到非洲、印度洋岛屿和夏威夷。我们在巴西大西洋森林北部发现了该物种,距离最近的记录有 1600 公里。我们使用形态学和分子遗传数据进行物种鉴定,确认了 D. nasuta 在该国的扩张。通过在一年的时间里,每两个月在一片保护林和两个人工林(竹子和桉树)上采样,大约捕获了 42,000 只果蝇,其中超过 5000 只是 D. nasuta。该物种在所有采样期间都被发现,并表现出对受保护森林的偏好。在这种环境中,我们在旱季检测到显着更高的 D. nasuta,这与描述的大西洋森林北部其他外来果蝇物种的季节性模式一致。D. nasuta 在这部分生物群落中的成功入侵是大西洋森林的一个严重警告信号,大西洋森林已经基本被破坏,是世界生物多样性保护的热点之一。其中超过 5000 个是 D. nasuta。该物种在所有采样期间都被发现,并表现出对受保护森林的偏好。在这种环境中,我们在旱季检测到显着更高的 D. nasuta,这与描述的大西洋森林北部其他外来果蝇物种的季节性模式一致。D. nasuta 在这部分生物群落中的成功入侵是大西洋森林的一个严重警告信号,大西洋森林已经基本被破坏,是世界生物多样性保护的热点之一。其中超过 5000 个是 D. nasuta。该物种在所有采样期间都被发现,并表现出对受保护森林的偏好。在这种环境中,我们在旱季检测到显着更高的 D. nasuta,这与描述的大西洋森林北部其他外来果蝇物种的季节性模式一致。D. nasuta 在这部分生物群落中的成功入侵是大西洋森林的一个严重警告信号,大西洋森林已经基本被破坏,是世界生物多样性保护的热点之一。这与描述的大西洋森林北部其他外来果蝇物种的季节性模式一致。D. nasuta 在这部分生物群落中的成功入侵是大西洋森林的一个严重警告信号,大西洋森林已经基本被破坏,是世界生物多样性保护的热点之一。这与描述的大西洋森林北部其他外来果蝇物种的季节性模式一致。D. nasuta 在这部分生物群落中的成功入侵是大西洋森林的一个严重警告信号,大西洋森林已经基本被破坏,是世界生物多样性保护的热点之一。
更新日期:2020-02-14
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