Comparison of modified CDC gravid, BG-Bowl, and CDC autocidal gravid ovitraps to collect gravid and host-seeking Aedes aegypti (Diptera: Culicidae) in northeastern Florida

Authors

  • Rui-De Xue Anastasia Mosquito Control District, 120 EOC Drive, St. Augustine, Florida 32092, USA
  • Jacob Dilla Anastasia Mosquito Control District, 120 EOC Drive, St. Augustine, Florida 32092, USA
  • Lea R. Bangonan Anastasia Mosquito Control District, 120 EOC Drive, St. Augustine, Florida 32092, USA

Abstract

There are several kinds of commercial traps available in the market for surveillance and control of female mosquitoes. Usually these traps target only host–seeking or gravid individuals but not both. This study examined whether CDC gravid, BG-Bowl, and a fan-operated CDC-autocidal gravid ovitrap, each baited with a BG lure and southern live oak (Quercus virginiana Mill.; Fagaceae) leaf litter infusion, could collect host-seeking and gravid Aedes aegypti (L.) (Diptera: Culicidae) simultaneously. These traps were evaluated initially in a semi-field environment that consisted of outdoor screened enclosures where 200 female Ae. aegypti were released (half were gravid). For the field study, traps were placed at 3 sites in downtown St. Augustine, Florida, USA. All traps captured host-seeking and gravid females in the semi-field enclosures, but some did not collect both physiological stages in the field study. Only the BG-bowl trap in the semi-field and field studies collected the greatest number of females that included host-seeking and gravid Aedes.

 

Resumen

Hay varios tipos de trampas comerciales disponibles en el mercado para la vigilancia y el control de mosquitos (zancudos) hembra. Por lo general, estas trampas se dirigen solo a individuos que buscan hospederos o grávidos, pero no a ambos. Este estudio examinó si las CDC Gravid, BG-Bowl y una ovitrap CDC-Autocidal Gravid operada por ventilador, cada una cebada con un señuelo BG y una infusión de hojarasca de roble vivo del sur (Quercus virginiana Mill.; Fagaceae), podrían recolectar los Aedes aegypti (L.) (Diptera: Culicidae) que buscan hospederos y grávidos simultáneamente. Se evaluaron estas trampas inicialmente en un ambiente de semi-campo que consistía en recintos con mosquiteros al aire libre donde 200 hembras de Ae. aegypti fueron liberadas (la mitad estaban gravidas). Para el estudio de campo, se colocaron trampas en 3 sitios en el centro de St. Augustine, Florida, EE. UU. Todas las trampas capturaron hembras grávidas y en busca de hospederos en los recintos de semi-campo, pero algunas no recolectaron ambos estadios fisiológicos en el estudio de campo. Solo la trampa BG-bowl en los estudios de campo y de semi-campo recogió el mayor número de hembras que incluyeron Aedes en busca de hospederos y grávidas.

Key Words: attractant; BG lure; oak leaf infusion water; oviposition; autocidal gravid ovitrap trap

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Published

2021-10-06

Issue

Section

Research Papers