COMPARISON OF SCIRTOTHRIPS PERSEAE (Thysanoptera: Thripidae) Infestation Levels on Avocado Fruit and Leaves
نویسندگان
چکیده
منابع مشابه
Comparison of Scirtothrips Perseae (thysanoptera: Thripidae) Infestation Levels on Avocado Fruit and Leaves
Avocado fruit can be severely damaged by Scirtothrips perseae (Thysanoptera: Thripidae) in southern California. Scirtothrips perseae is found on leaves and fruit, but its prevalence on one versus the other substrate has not been documented. In this study, the occurrence and infestation levels of S. perseae on avocado leaves and fruit during late spring and summer were compared at three sites in...
متن کاملThe economic impact of Scirtothrips perseae Nakahara (Thysanoptera: Thripidae) on California avocado production
In 1996, Scirtothrips perseae Nakahara (Thysanoptera: Thripidae) invaded California avocado orchards and moved pest management practices that relied almost exclusively on biological control to strategies dependent on insecticides to maintain thrips densities below economically damaging levels. By 1998, average losses due to thrips feeding damage in untreated infested groves reduced industry rev...
متن کاملDevelopmental and reproductive biology of Scirtothrips perseae (Thysanoptera: Thripidae): a new avocado pest in California.
The developmental and reproductive biology of a new avocado pest, Scirtothrips perseae Nakahara, was determined in the laboratory at five constant temperatures, 15, 20, 25, 27.5 and 30 degrees C. At 20 degrees C, S. perseae exhibited greatest larval to adult survivorship (41%), and mated females produced a greater proportion of female offspring at this temperature when compared to 15, 25, 27.5 ...
متن کاملForeign exploration for Scirtothrips perseae Nakahara (Thysanoptera: Thripidae) and associated natural enemies on avocado (Persea americana Miller)
Scirtothrips perseae Nakahara was discovered attacking avocados in California, USA, in 1996. Host plant surveys in California indicated that S. perseae has a highly restricted host range with larvae being found only on avocados, while adults were collected from 11 different plant species. As part of a management program for this pest, a ‘‘classical’’ biological control program was initiated and...
متن کاملPredation behaviors of Franklinothrips orizabensis (Thysanoptera: Aeolothripidae) towards Scirtothrips perseae and Heliothrips haemorrhoidalis (Thysanoptera: Thripidae)
The foraging behaviors of predatory female Franklinothrips orizabensis Johansen towards Scirtothrips perseae Nakahara and Heliothrips haemorrhoidalis (Bouch e) in avocado leaf arenas were videotaped and analyzed. F. orizabensis encountered and attacked more second instar S. perseae with 80% ðn 1⁄4 113Þ attacks on this life stage being observed compared to 20% on first instars ðn 1⁄4 28Þ when eq...
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ژورنال
عنوان ژورنال: Florida Entomologist
سال: 2003
ISSN: 0015-4040,1938-5102
DOI: 10.1653/0015-4040(2003)086[0409:cosptt]2.0.co;2