Results 41 to 50 of about 6,122 (215)

Evolutionary Relationships among Primary Endosymbionts of the Mealybug Subfamily Phenacoccinae (Hemiptera: Coccoidea: Pseudococcidae) [PDF]

open access: yes, 2010
Mealybugs (Coccoidea: Pseudococcidae) are sap-sucking plant parasites that harbor bacterial endosymbionts within specialized organs. Previous studies have identified two subfamilies, Pseudococcinae and Phenacoccinae, within mealybugs and determined the ...
Penny J. Gullan   +7 more
core   +2 more sources

A horizontally acquired pantothenate gene drives vitellogenin's benefit to whitefly symbiosis persistence

open access: yesInsect Science, EarlyView.
This diagram illustrates that the horizontally transferred panBC influences the level and localization of vitellogenin (Vg) by facilitating pantothenate production and juvenile hormone (JH) biosynthesis. In turn, Vg shields symbionts by suppressing autophagic degradation in bacteriocytes.
Xiang Sun   +5 more
wiley   +1 more source

Reproductive and developmental parameters of Aenasius bambawalei (Hymenoptera: Encyrtidae) as affected by temperature

open access: yesJournal of Crop Protection, 2020
The life table parameters of the parasitoid wasp, Aenasius bambawalei Hayat (Hym.: Encyrtidae) were studied at 25, 30, and 35 °C, 65 ± 5% R. H. and 14L: 10D h.
Razieh Joodaki   +3 more
doaj  

Sex Pheromone of the Papaya Mealybug. [PDF]

open access: yesJ Chem Ecol
Sex pheromones of mealybugs are reported from more than 20 species and have generally been shown to be monoterpene alcohols esterified with short-chain carboxylic acids. Here, however, we discovered and isolated an alcohol without an acid moiety as a pheromone compound released from adult females of the papaya mealybug, Paracoccus marginatus.
Sugawara Y, Uesato T, Tabata J.
europepmc   +3 more sources

Combined effects of the landscape and crop management on ant communities

open access: yesAgricultural and Forest Entomology, EarlyView.
At small spatial scales, agricultural management acts as a stronger ecological filter than landscape context, significantly shaping ant community composition. Species richness and frequency did not differ among treatments, indicating the predominance of generalist species.
Claudia Tiemi Wazema   +7 more
wiley   +1 more source

Effects of a Native Ant, Pristomyrmex pungens (Hymenoptera: Formicidae) on the Population Dynamics and Spatial Distribution of the Invasive Mealybug Phenacoccus solenopsis (Hemiptera: Pseudococcidae)

open access: yesSociobiology, 2015
The mealybug Phenacoccus solenopsis has been recently reported as a serious invasive insect pest in China. Earlier investigations suggest that some species of native ants may tend P solenopsis in the field, and affect the population number and spatial ...
Jun Huang
doaj   +1 more source

Methyl Jasmonate and Methyl Salicylate Differentially Modulate Direct and Indirect Defenses in Coffee Plants Against the White Mealybug

open access: yesEntomologia Experimentalis et Applicata, EarlyView.
MeJA application strengthened both direct and indirect coffee defenses against the white mealybug Planococcus citri, whereas the effects of MeSA were variable and context‐dependent across the defensive traits examined. The combined application of both elicitors produced an effect similar to MeSA on direct defenses, but resembled MeJA when indirect ...
Bianca de Paula Valério   +3 more
wiley   +1 more source

Prevalence of Dysmicoccus brevipes (Cockerell, 1893) (Hemiptera: Pseudococcidae) in MD2 pineapple crop areas in Colombia

open access: yesPesquisa Agropecuária Tropical, 2021
Pineapple mealybug wilt has been reported as one of the most important diseases affecting pineapple crops worldwide. This study aimed to determine the prevalence of mealybugs associated with two agroclimatic zones of pineapple production in the
Isabel Moreno   +4 more
doaj   +1 more source

Tachinidae (Diptera) as Floral Visitors and Pollinators in Natural and Managed Systems

open access: yesEntomologia Experimentalis et Applicata, EarlyView.
We review the roles of bristle flies (Tachinidae) as pollinators in natural and managed systems. We find that most tachinid genera visit flowers and that floral‐adapted mouthparts have evolved repeatedly many times in the family. We review patterns of floral specificity and assess the efficacy of tachinids as pollinators with case studies.
John O. Stireman III   +1 more
wiley   +1 more source

Notes on a new mealybug (Hemiptera: Coccoidea: Pseudococcidae) pest in Florida and the Caribbean : the papaya mealybug, Paracoccus marginatus Williams and Granara de Willink [PDF]

open access: yes, 1999
Paracoccus marginatus Williams and Granara de Willink, here called the papaya mealybug, was first detected in the United States in Hollywood, Florida in 1998.
Miller, Douglass R.   +2 more
core  

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