Mason Taylor, K. Harris‐Shultz, J. S. Armstrong, Rafael Hayashida, Dolores Morhinweg, W. Hoback
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引用次数: 0
Abstract
Abstract. Hedgehog grain aphid, Sipha maydis Passerini, is a key pest of many cereal crops and pasture grasses around the world. Because of potential to damage crops, wide range of host plants, and occurrence in varying climatic conditions, frequent assessments of distribution of hedgehog grain aphid are needed with documentation of hosts and assessment of genetic differentiation. Fields were sampled in 2021 and 2022 in Colorado, New Mexico, Oklahoma, Texas, Utah, and Wyoming. Surveys did not detect hedgehog grain aphid in New Mexico, Oklahoma, Texas, and Wyoming and only found it on wild grasses in Colorado and Utah. DNA was isolated from hedgehog grain aphid samples collected between 2016 and 2022 from 11 grass hosts in Colorado, New Mexico, and Utah. The 18S rDNA and translation elongation factor 1-alpha gene fragments were amplified and sequenced from each sample and no genetic variation was detected. Based on field surveys and genetic analysis, hedgehog grain aphid seems established in limited clonal populations on various wild grasses. At present, hedgehog grain aphid is not a significant threat to small grain crops in the United States, but continued monitoring is necessary because of its broad host range and potential for economic damage, as observed in Argentina. Resumen. El pulgón negro de los cereales (PNC), Sipha maydis Passerini, se considera como plaga clave en muchos cereales y pastizales alrededor del mundo. Debido a su daño potential, el amplio rango de hospedantes y su presencia en varios climas, se requieren evaluaciones constantes sobre su uso actual de plantas, y que incluya además su diferenciación genética. Muestras del campo en 2021 y 2022 en varios estados, incluidos Oklahoma, Wyoming, Nuevo México, Texas, Colorado, y Utah, revelaron que el PNC no se encontró en Oklahoma, Wyoming, Nuevo México, o Texas, y solo se encontró en pastos nativos en Colorado y Utah. Se aisló ADN de muestras del PNC que fueron colectadas entre 2016 y 2022 en Colorado, Nuevo México, y Utah de 11 pastos. El alargamiento de la traducción del rADN 18S del factor 1-alfa de fragmentos de genes fueron amplificados y secuenciados en cada muestra y no se detectó variación genética. Las muestras del campo y el análisis genético indican que el PNC parece estar establecido en poblaciónes clonales reducidas en varios pastos silvestres. En este momento el PNC no presenta un riesgo significativo para los cerelaes en Estados Unidos, pero es necesario continuar su monitoreo debido a su amplio rango de hospedantes y su daño económico potencial, como se ha observado en Argentina.
期刊介绍：
Manuscripts submitted for consideration for publication in the Southwestern Entomologist should report results of entomological research in the southwestern United States or Mexico or should report results of studies on entomological species, relevant to this region, which may be done elsewhere, provided such results are geographically applicable. Manuscripts that report results of routine laboratory or field experiments for which the primary purpose is gathering baseline data or those that report results of a continuous evaluation program such as preliminary pesticide evaluation experiments, species lists with no supporting biological data, or preliminary plant resistance evaluations are not acceptable. However, reports of experiments with insecticides, acaricides, and microbials are acceptable if they are comprehensive and include data related to economics, resistance, toxicology, or other broad subject areas. Bibliographies will not be published in Southwestern Entomologist.
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