Results 51 to 60 of about 1,580 (170)

Influence of different densities and nymphal instars of Aphis gossypii (Hemiptera: Aphididae) on developmental time and feeding rate of larvae of Episyrphus balteatus (Diptera: Syrphidae) under greenhouse conditions [PDF]

نامه انجمن حشره‌شناسی ایران, 2017
Several aphidophagous insects such as predators and parasitoids are known to respond positively to aphid infested plants. This  study was intended to evaluate the effect of different densities (40, 60, 80, 100) and nymphal instars (1st, 2nd, 3rd, 4th) of
Z. Hosseinzadeh, A. Sahragard, A. Zibaee
doaj  

Records of predators of the green apple aphid, Aphis pomi De Geer, from Himachal Pradesh

Environment Conservation Journal, 2019
Nine species of coccinellids (Coleoptera: Coccinellidae) and three species of syrphid (Diptera: Syrphidae) predators of the green apple aphid, Aphis pomi De Geer, occurring in apple nurseries in Himachal Pradesh are reported.
M. Kumari
doaj   +1 more source

Pollinator community composition and pollen resource use in calcareous grasslands under different landscape contexts across Europe

Journal of Animal Ecology, EarlyView.
In this paper, we show that pronounced differences in pollinator communities exist between grasslands embedded in contrasting agricultural landscape contexts. Opportunistic foraging strategies of most pollinators resulted in large interaction turnover, but these shifts did not translate into major changes in overall network structure, most likely as a ...
Olivia Bernhardsson, Epp Valdaru, Tsipe Aavik, Lucie M. Baltz, Tomáš Dostálek, L. Marie Ende, Khalil Jegham, Marianne Kivastik, Zuzana Münzbergová, Hana Pánková, Jan Plue, Patrycja Pluta, Iris Reinula, Virve Sõber, Panagiotis Theodorou, Sabrina Träger, Mari‐Liis Viljur, Hans Jacquemyn   +17 more
wiley   +1 more source

Flower constancy in the hoverflies Episyrphus balteatus (Degeer) and Syrphus ribesii (L.) (Syrphidae)

, 1998
The causes and consequences of flower constancy have been the focus of many studies, but almost all have examined the foraging behavior of bumblebees, honeybees, or butterflies.
Wright, Nick P, Nick P Wright (16200731), Goulson, Dave, Dave Goulson (4460962)   +3 more
core   +1 more source

Syrphids (Diptera, Syrphidae) and coccinellids (Coleoptera, Coccinellidae) occurring in Myzus cerasi (F.) (Hemiptera) colonies on Prunus avium L.

Folia Horticulturae, 2011
During the sampling period, 243 syrphid larvae belonging to seven species were collected from M. cerasi colonies on P. avium. Episyrphus balteatus Deg. and Epistrophe eligans (Harr.) were the most numerous species amongst the materials gathered, followed
Wojciechowicz-Żytko Elżbieta
doaj   +1 more source

Metabarcoding of Pollen Carried by Syrphids Reveals Novel Plant–Pollinator Interactions in a Protected Natural Area and Agricultural Sites

Entomologia Experimentalis et Applicata, EarlyView.
Using DNA metabarcoding, this study investigates pollen transported by syrphids (Syrphidae) in the Dolomiti Bellunesi National Park and agricultural sites in Northern Italy. The analysis reveals a high diversity of visited plant taxa, including previously undocumented plant–pollinator interactions.
Serena Magagnoli, Daniele Sommaggio, Claudio Ratti, Riccardo Baroncelli, Andrea Menicucci, Enrico Vettorazzo, Giovanni Burgio   +6 more
wiley   +1 more source

Do aphid endosymbiotic bacteria influence parasitoid searching behaviour through changes in aphid honeydew production?

Ecological Entomology, EarlyView.
Hamiltonella defensa infection increases honeydew production in certain aphid genotypes, potentially modifying aphid feeding behaviour. Parasitoid wasps, Aphidius ervi, are more attracted to honeydew from H. defensa‐infected aphids; though larger honeydew amounts may slightly deter searching.
Desiré Macheda, Alexandre Foito, Katharine F. Preedy, Colin J. Alexander, Ankush Prashar, Alison J. Karley   +5 more
wiley   +1 more source

What makes Episyrphus balteatus (Diptera: Syrphidae) oviposit on aphid infested tomato plants? [PDF]

, 2008
peer reviewedUnder attack by insect pests, many plant species change their volatile chemical emissions to attract natural enemies. Most of the tomato (Lycopersicon sp., Solanaceae) varieties are subjected to infestation by molluscs and insects, including
Haubruge, Eric, Capella, Quentin, Wathelet, Jean-Paul, Verheggen, François   +3 more
core   +1 more source

Honeybees directly outcompete other flower visitors through interference competition on shared resource

Ecological Entomology, EarlyView.
The outcomes of encounters between honeybees and other flower visitors were observed on two plant species. Pollinators either win, lose or share a resource. Competitive interactions led to greater than expected ‘wins’ for honeybees. The honeybee displaced or gave chase when interacting with another pollinator in at least 20% of winning outcomes ...
Victoria A. Buckle, Peter M. J. Brown, Toby Carter, Thomas C. Ings   +3 more
wiley   +1 more source

Surrounding Semi-Natural Vegetation as a Source of Aphidophagous Syrphids (Diptera, Syrphidae) for Aphid Control in Apple Orchards

Agriculture, 2023
The influence of different semi-natural surroundings adjacent to apple orchards on the occurrence of predatory syrphids and biological control of Aphis pomi Deg. and Dysaphis plantaginea Pass. was compared.
Elżbieta Wojciechowicz-Żytko, Edyta Wilk   +1 more
doaj   +1 more source