First report on the occurrence of Bondar’s Nesting Whitefly, Paraleyrodes bondari Peracchi (Hemiptera: Aleyrodidae) on coconut in Bangladesh
摘要
The Bondar’s Nesting Whitefly (BNW), Paraleyrodes bondari Peracchi (Hemiptera: Aleyrodidae) is an invasive species native to Brazil that has now established populations in several regions worldwide. Although it has been recorded on a wide range of host plants, coconut is considered its most preferred and economically important host. Coconut (Cocos nucifera L) is an important tropical crop in Bangladesh, supporting rural livelihoods and contributing significantly to the economy. A survey conducted in the south-western region of Bangladesh, documented for the first time, the presence of P. bondari on coconut palms through morpho-molecular analyses. Morphological traits, including distinctive ‘X’-shaped grey bands on wings, oval stalked eggs, and flat puparia without caudal extensions supported species identification, which was confirmed by mitochondrial cytochrome oxidase I (mtCOI) gene sequencing. Phylogenetic analysis using the Maximum Likelihood method placed the isolates within the P. bondari clade with strong bootstrap support. Notably, the study revealed that P. bondari and A. rugioperculatus exhibited substantial co-occurrence on the same coconut palms. Depending on the location, P. bondari constituted approximately 29–63% of the total whitefly populations, indicating its dominance and potential to reach economically damaging levels if populations continue to increase. Thus, the polyphagous nature of the non-native P. bondari emphasizes the need for continuous surveillance and stringent quarantine protocols to prevent its further spread into coconut-growing areas. In addition, effective and sustainable management strategies are needed to protect high-value coconut and other tropical crops from potential economic losses.