Spatial and temporal variation in abundance of introduced African fig fly (Zaprionus indianus) (Diptera: Drosophilidae) in the eastern United States.
Spatial and temporal variation in abundance of introduced African fig fly (Zaprionus indianus) (Diptera: Drosophilidae) in the eastern United States.
复制标题
美国东部引进的非洲无花果蝇（Zaprionus indianus）（双翅目：果蝇科）丰度的时空变化。
DOI：
10.1101/2023.03.24.534156
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Erickson,PriscillaA
中科院分区：
文献类型：
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作者：
Rakes,LoganM;Delamont,Megan;Cole,Christine;Yates,JillianA;Blevins,LynseyJo;Hassan,FatimaNaureen;Bergland,AlanO;Erickson,PriscillaA
非洲无花果蝇Zaprionus indianus（Gupta）已从其热带非洲的原生范围向全球蔓延，成为巴西等特定地区的入侵性作物害虫。Z.印第安人于2005年首次在美国报道，此后在加拿大北部也有记录。作为一个热带种，Z.预计印第安纳的耐寒性较低，可能限制其在北方纬度持续生存的能力。在北美，Z.印第安纳可以茁壮成长，其丰度的季节性波动还不太清楚。本研究的目的是描述时间和空间变化的Z。印第安人的丰度，以更好地了解其入侵美国东部。我们在2020-2022年的生长季节对弗吉尼亚州的两个果园以及2022年秋季沿着东海岸的几个地点的果蝇群落进行了采样。弗吉尼亚州的丰度曲线显示出类似的季节性动态，多年来首次检测到的个体大约在7月左右，并在12月左右消失。马萨诸塞州是人口最北端，没有Z。在缅因州发现了印第安人。Z的变化。Indianus在附近果园之间和果园内不同水果之间的相对丰度较高，但与纬度无关。健身野生捕获的女性下降后，在本赛季和高纬度地区。Z.这里显示的indianus丰度证明了对寒冷的明显敏感性，并强调了系统采样的必要性，以准确地描述Z的范围和传播。印第安纳。
The African fig fly, Zaprionus indianus (Gupta), has spread globally from its native range in tropical Africa, becoming an invasive crop pest in select areas such as Brazil. Z. indianus was first reported in the United States in 2005 and has since been documented as far north as Canada. As a tropical species, Z. indianus is expected to have low cold tolerance, likely limiting its ability to persist at northern latitudes. In North America, the geographic regions where Z. indianus can thrive and seasonal fluctuations in its abundance are not well understood. The purpose of this study was to characterize the temporal and spatial variation in Z. indianus abundance to better understand its invasion of the eastern United States. We sampled drosophilid communities over the growing season at two orchards in Virginia from 2020-2022 and several locations along the East Coast during the fall of 2022. Virginia abundance curves showed similar seasonal dynamics across years with individuals first detected around July and becoming absent around December. Massachusetts was the northernmost population and no Z. indianus were detected in Maine. Variation in Z. indianus relative abundance was high between nearby orchards and across different fruits within orchards but was not correlated with latitude. Fitness of wild-caught females decreased later in the season and at higher latitudes. The patterns of Z. indianus abundance shown here demonstrate an apparent susceptibility to cold and highlight a need for systematic sampling to accurately characterize the range and spread of Z. indianus.