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两栖动物大量丧失后引起热带蛇类多样性崩溃
作者:小柯机器人 发布时间:2020/2/17 13:33:31

美国密歇根州立大学Elise F. Zipkin等研究人员发现,两栖动物大量丧失后引起热带蛇类多样性崩溃。2020年2月14日,国际知名学术期刊《科学》发表了这一成果。

研究人员记录到,侵入性真菌病原体Batrachochytrium dendrobatidis引起的壶菌病流行导致了两栖动物的灾难性损失,从而引起新热带蛇群落的崩溃(这些两栖动物是这些蛇的食物)。在两栖动物大量死亡后,尽管环境没有其他系统性变化,但在整个研究地点,蛇类群落中的物种数量变少,并且更为均一,此外数个物种的身体状况较差。两栖动物丧失后,蛇群落的灭亡表明了生物多样性危机的严重后果,而这些后果往往被忽略了。研究人员提醒人们应该注意稀有且认知有限物种的无形衰退。
 
据介绍,全球生物多样性正在以前所未有的速度下降。然而,生物多样性丧失对其他类群的连锁影响在很大程度上尚不清楚,因为通常没有基准数据。
 
附:英文原文

Title: Tropical snake diversity collapses after widespread amphibian loss

Author: Elise F. Zipkin, Graziella V. DiRenzo, Julie M. Ray, Sam Rossman, Karen R. Lips

Issue&Volume: 2020/02/14

Abstract: Biodiversity is declining at unprecedented rates worldwide. Yet cascading effects of biodiversity loss on other taxa are largely unknown because baseline data are often unavailable. We document the collapse of a Neotropical snake community after the invasive fungal pathogen Batrachochytrium dendrobatidis caused a chytridiomycosis epizootic leading to the catastrophic loss of amphibians, a food source for snakes. After mass mortality of amphibians, the snake community contained fewer species and was more homogeneous across the study site, with several species in poorer body condition, despite no other systematic changes in the environment. The demise of the snake community after amphibian loss demonstrates the repercussive and often unnoticed consequences of the biodiversity crisis and calls attention to the invisible declines of rare and data-deficient species.

DOI: 10.1126/science.aay5733

Source: https://science.sciencemag.org/content/367/6479/814

期刊信息
Science:《科学》,创刊于1880年。隶属于美国科学促进会,最新IF:41.037