Results 41 to 50 of about 19,873 (228)

From the predator to the prey: a case study of the vulnerability of Harmonia axyridis to aggressive competitors

open access: yesInsect Science, EarlyView.
The level of aggressiveness of an individual is a factor that shapes intraguild predation (IGP) interactions. In Nabis americoferus, high aggressiveness leads to an increase in attack rate and IGP against Harmonia axyridis. Moreover, the absence of extraguild prey seems to exacerbate IGP. In docile N.
Pierre Royer   +3 more
wiley   +1 more source

The presence of micropyles in the shells of developing and undeveloped eggs of the ladybird beetle Harmonia axyridis (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2009
In Hymenoptera and Heteroptera, the absence of micropyles is one criterion for categorizing an egg as trophic. Undeveloped eggs are observed in more than 90% of the egg clusters of the ladybird beetle Harmonia axyridis Pallas.
Naoya OSAWA, Arata YOSHINAGA
doaj   +1 more source

An unnecessary generic name in Exoplectrini (Coleoptera: Coccinellidae) [PDF]

open access: yes, 2009
Chnoodes chaudoiri Mulsant (1850) is designated the type species of Chnoodes Mulsant (1850), and Chapinella Gordon (1996) is recognized as an unnecessary replacement name.
Gordon, Robert D.
core  

Effects of transgenic Cry1Ac + CpTI cotton on non-target mealybug pest Ferrisia virgata and its predator Cryptolaemus montrouzieri [PDF]

open access: yes, 2014
Recently, several invasive mealybugs (Hemiptera: Pseudococcidae) have rapidly spread to Asia and have become a serious threat to the production of cotton including transgenic cotton.
De Clercq, Patrick   +7 more
core   +3 more sources

“Alien versus predator”: predatory effect of coccinellid Exochomus quadripustulatus on the scale insect Toumeyella parvicornis. An open‐field experimentation on the Pinus pinea of Rome

open access: yesInsect Science, EarlyView.
The release of gravid Exochomus quadripustulatus females proved to be effective in containing Toumeyella parvicornis infestations on stone pine trees, under open‐field condition. The ladybugs caused a lower infestation level compared to the trees that did not receive any ladybugs during the observation season.
Nicolò Di Sora   +4 more
wiley   +1 more source

Descripción morfológica y citogenética de una nueva especie de Parasitylenchus Micoletzky, 1922 (Tylenchida, Allantonematidae) parasitando Harmonia axyridis (Pallas, 1773) (Coleopera, Coccinellidae) en Argentina

open access: yesRevista Peruana de Biología, 2019
Se cita y describe por primera vez para Argentina Parasitylenchus pseusobifurcatus sp.n. (Tylenchida, Allantonematidae), parásito de adultos de Harmonia axyridis (Pallas, 1773) (Coleopera, Coccinellidae).
Nora B. Camino   +3 more
doaj   +1 more source

Ant–aphid mutualism: the influence of Tapinoma ibericum (Hymenoptera: Formicidae) on Aphis gossypii (Hemiptera: Aphidae) control by commercial and spontaneous natural enemies

open access: yesInsect Science, EarlyView.
The mutualism between Tapinoma ibericum ants and Aphis gossypii disrupts the biological control exerted by Aphidius colemani in greenhouse peppers. Ant exclusion increased parasitism and the presence of most natural enemies, although Aphidoletes aphidimyza was more abundant with ants.
Jesús Foronda   +7 more
wiley   +1 more source

Unconditioned and conditioned responses to colour in the predatory coccinellid, Harmonia axyridis (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2000
We determined if mature ladybirds use colour to initially find suitable host plants. We also determined whether ladybird beetles are capable of associating characteristics such as colour with the presence of prey.
Edward B. MONDOR, Jessie L. WARREN
doaj   +1 more source

Novel Prey Record for Scymnus caudalis LeConte and First Records of Four Other Species of Coccinellidae (Coleoptera) in Wisconsin, U.S.A. [PDF]

open access: yes, 2018
New prey and distribution records are presented for five species of lady beetles (Coleoptera: Coccinellidae). Scymnus (Pullus) caudalis LeConte is recorded for the first time preying on Aphis asclepiadis Fitch (Hemiptera: Aphididae).
Hesler, Louis S., Nixon, Jedidiah
core   +3 more sources

Reduced fertilization regimes could boost biocontrol service without reducing crop yield

open access: yesInsect Science, EarlyView.
Fertilization level influences pest control effectiveness in tomato crops. High fertilization increases plant growth and aphid density but reduces the performance of the parasitoid Aphidius ervi. In contrast, the predator Adalia bipunctata maintains consistent aphid suppression regardless of fertilization regime.
Ruohan Ma   +5 more
wiley   +1 more source

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