Limits to the reproductive success of two insect parasitoid species in the field

Ecology ◽  
2013 ◽  
Vol 94 (11) ◽  
pp. 2498-2504 ◽  
Author(s):  
Michal Segoli ◽  
Jay A. Rosenheim
Keyword(s):  
Reproductive Success ◽  
Parasitoid Species ◽  
Insect Parasitoid

Insect parasitoid species respond to forest structure at different spatial scales

Nature ◽  
1997 ◽  
Vol 386 (6626) ◽  
pp. 710-713 ◽  
Author(s):  
Jens Roland ◽  
Philip D. Taylor
Keyword(s):  
Forest Structure ◽  
Spatial Scales ◽  
Parasitoid Species ◽  
Insect Parasitoid

Influence of rice crop stage on the distribution of hymenopteran parasitoids of insect pests

ENTOMON ◽  
2021 ◽  
Vol 46 (2) ◽  
pp. 113-120
Author(s):  
S.J. Reuolin ◽  
N. Muthukrishnan ◽  
M. Paramasivam ◽  
K.S. Subramanian ◽  
N. Maragatham
Keyword(s):  
Insect Pests ◽  
Rice Crop ◽  
Insect Host ◽  
Parasitoid Species ◽  
Insect Parasitoid ◽  
Host Availability ◽  
Panicle Development ◽  
Significant Difference ◽  
Rice Ecosystem ◽  
Hymenopteran Parasitoids

A total of 43 insect parasitoid species belonging to fourteen families (Aphelinidae, Braconidae, Ceraphronidae, Diapriidae, Encyrtidae, Eulophidae, Eurytomidae, Ichneumonidae, Megaspilidae, Mymaridae, Platygasteridae, Proctotrupidae, Pteromalidae, Trichogrammatidae) has been documented in the rice ecosystem using yellow pan trap. The observations were made at four important stages of rice crop like early tillering, active tillering, booting and panicle development. The parasitoids were also compared with the occurrence of sixteen insect pests that were recorded simultaneously in each stage of the crop. The result revealed that, there is a significant difference in the occurrence of parasitoids according to the stage of the crop and insect host availability. This understanding help in the introduction of specific parasitoids at respective stages for effective biocontrol.

The scale insect Coccus pseudomagnoliarum (Kuwana) (Hemiptera: Coccomorpha: Coccidae) on citrus in Greece

2020 ◽  
Vol 13 (2) ◽  
pp. 93-97
Author(s):  
G.J. Stathas ◽  
Ch.F. Karipidis
Keyword(s):  
Citrus Sinensis ◽  
Maximum Rate ◽  
Scale Insect ◽  
Instar Nymph ◽  
Summer Period ◽  
Parasitoid Species ◽  
Parthenogenetic Species

SummaryPhenology and parasitism of the scale insect, Coccus pseudomagnoliarum (Kuwana) (Hemiptera: Coccomorpha: Coccidae), infesting Citrus sinensis (Rutaceae), were studied in Papagou area, in northeastern Athens, from June 2015 to June 2017. Coccus pseudomagnoliarum is a univoltine, viviparous, parthenogenetic species. It overwintered as settled 1st instar nymph on the shoots of the trees. The 2nd instar nymphs appeared between the beginning of April and the end of May, and the mature females were recorded from the beginning of May until the middle of June. The crawlers appeared between the middle of May and the middle of June and the 1st instar nymphs settled on the shoots at the end of May, where they remained during the whole summer period, winter, until the beginning of April next year. Parasitism of the scale was recorded between the beginning of May and the middle of May and reached a maximum rate of 35%. The recorded parasitoid species were Coccophagus shillongensis Hayat and Singh (Hymenoptera: Aphelinidae), Coccophagus spp. and Metaphycus dispar (Mercet) (Hymenoptera: Encyrtidae).

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