Palash Anwar, Paul Shatabdi, Resha Sabrina Karim, Khan Md Kawsar
Department of Zoology, University of Dhaka, Dhaka, 1000, Bangladesh.
Department of Biochemistry and Molecular Biology, Shahjalal University of Science and Technology, Sylhet, 3114, Bangladesh.
Heliyon. 2022 Aug 17;8(8):e10290. doi: 10.1016/j.heliyon.2022.e10290. eCollection 2022 Aug.
Lepidoptera, butterflies and moths, are significant pollinators and ecosystem health indicators. Therefore, monitoring their diversity, distribution, and extinction risks are of critical importance. We aim to understand drivers of local extinction risks of the butterflies in Bangladesh. We conducted a systematic review to extract local extinction risks of the butterflies of Bangladesh, and possible drivers (e.g., body size and diet breadth) of their extinction. We tested whether body size, larval host plants and adult nectar plants contribute to the local extinction risks of butterflies. We predicted butterflies with larger body size and fewer host and nectar plants would be in greater extinction risk. We showed extinction risk is higher in larger butterflies than smaller butterflies, and in butterflies with fewer number of host and nectar plants than the butterflies with higher number host and nectar plants. Our study identifies body size and diet breadth as a potential driver of the local extinction of butterflies thereby suggesting larger conservation urgency for the larger butterflies with narrow diet breadth.
鳞翅目昆虫，即蝴蝶和蛾类，是重要的传粉者和生态系统健康指标。因此，监测它们的多样性、分布和灭绝风险至关重要。我们旨在了解孟加拉国蝴蝶局部灭绝风险的驱动因素。我们进行了一项系统综述，以提取孟加拉国蝴蝶的局部灭绝风险，以及其灭绝的可能驱动因素（如体型和食性广度）。我们测试了体型、幼虫寄主植物和成虫蜜源植物是否会导致蝴蝶的局部灭绝风险。我们预测，体型较大且寄主和蜜源植物较少的蝴蝶面临的灭绝风险会更高。我们发现，体型较大的蝴蝶比体型较小的蝴蝶灭绝风险更高，寄主和蜜源植物数量较少的蝴蝶比寄主和蜜源植物数量较多的蝴蝶灭绝风险更高。我们的研究将体型和食性广度确定为蝴蝶局部灭绝的一个潜在驱动因素，从而表明食性广度窄的大型蝴蝶具有更大的保护紧迫性。
