Title of article :
SPIDERS (ARANEAE) SURVEYED FROM UNSPRAYED CITRUS ORCHARDS IN FAISALABAD, PAKISTAN AND THEIR POTENTIAL AS BIOLOGICAL CONTROL AGENTS OF DIAPHORINA CITRI (HEMIPTERA: LIVIIDAE)
Author/Authors :
Vetter, Richard S. University of California - Department of Entomology, USA , Khan, Shouket Zaman University of Agriculture - Department of Entomology, Pakistan , Arif, Muhammad Jalal University of Agriculture - Department of Entomology, Pakistan , Hoddle, Christina University of California - Department of Entomology, USA , Hoddle, Mark S. University of California - Center for Invasive Species Research - Department of Entomology, USA
Abstract :
Spiders and Asian citrus psyllid (ACP), Diaphorina citri, a pest of citrus and potential prey for spiders, were sampled in unsprayed kinnow mandarin and sweet orange orchards at two research sites in Faisalabad Pakistan from March 2011 to April 2013. Spiders in citrus were collected by weekly tap sampling of foliage and passive interception with a Malaise trap. The weekly percentage of citrus flush growth infested with ACP eggs, nymphs, and adults provided estimates of pest phenology and relative abundance over time. Spider count data and measures of ACP abundance in orchards were assessed together to determine if spider populations were likely to be present at times when ACP was available as prey. From this study, 15 families, 26 genera and 16 species were determinable from tap sampling, while in Malaise trap samples, 14 families, 28 genera and 21 species were identified. Adult spiders were likely too large to attack any ACP life stage. However, immature jumping spiders (Salticidae) and a yellow sac spider, Cheiracanthium insulanum may be potential predators of ACP
Keywords :
Asian citrus psyllid , Diaphorina citri , Malaise trap , Phenology , Predators , Tap , sampling
Journal title :
Pakistan Entomologist
Journal title :
Pakistan Entomologist
