HOMALODISCA COAGULATA (HEMIPTERA: CICADELLIDAE) EMBRYONIC DEVELOPMENT AT CONSTANT TEMPERATURES
نویسندگان
چکیده
منابع مشابه
Phenology and demography of Homalodisca coagulata (Hemiptera: Cicadellidae) in southern California citrus and implications for management.
Populations of Homalodisca coagulata (Say) were sampled from citrus orchards in southern California, USA to characterize and quantify seasonal occurrences of nymphs and adults with the goal of identifying management opportunities through well-timed treatments and/or natural enemy releases. Higher densities of H. coagulata in 2001 contributed to a complete seasonal profile that began in early sp...
متن کاملStructure of female genitalia of glassy-winged sharpshooter, Homalodisca coagulata (Say) (Hemiptera: Cicadellidae).
The functional reproductive morphology of the female glassy-winged sharpshooter, Homalodisca coagulata (Say), is described at both light microscopy and scanning electron microscopy levels. The female has nine abdominal segments; the seventh to the ninth abdominal segments are modified for reproduction; the eighth tergite is reduced to two segments, with the ovipositor partially exposed from the...
متن کاملPOPULATION ECOLOGY Seasonal Patterns of Female Homalodisca coagulata (Say) (Hemiptera: Cicadellidae) Reproductive Physiology in Riverside, California
Female Homalodisca coagulata (Say) were collected from October 2001 to February 2005 from citrus at theUniversity of California, Riverside. Between 5 and 20 females per sampling date were dissected, and each was assigned an ovarian rank: previtellogenic, vitellogenic, or postvitellogenic. Ovarian ranking was used to characterize H. coagulata reproductive activity. Results of these dissections r...
متن کاملOlfactory and visual stimuli affecting host plant detection in Homalodisca coagulata (Hemiptera: Cicadellidae).
The relative effects of visual and olfactory stimuli on host plant detection in immature and adult Homalodisca coagulata Say (Homoptera: Cicadellidae) were studied using a novel olfactometer and factorial experimental designs. Colored, gray, and white cards were used as visual targets. Each card was attached to a glass thistle tube from which host-plant odor (from Vigna unguiculata L.) or blank...
متن کاملTransmission of Xylella fastidiosa to grapevines by Homalodisca coagulata (Hemiptera: Cicadellidae).
Pierce's disease (PD) of grapevines is caused by a xylem-limited bacterium Xylella fastidiosa (Wells, Raju, Hung, Weisburg, Mandelco-Paul, and Brenner) that is transmitted to plants by xylem sap-feeding insects. The introduction of the sharpshooter leafhopper Homalodisca coagulata (Say) into California has initiated new PD epidemics in southern California. In laboratory experiments, the major c...
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ژورنال
عنوان ژورنال: Florida Entomologist
سال: 2003
ISSN: 0015-4040,1938-5102
DOI: 10.1653/0015-4040(2003)086[0477:hchced]2.0.co;2