Searching and oviposition behaviour of Amitus fuscipennis, a parasitoid of the greenhouse whitefly

2002 ◽  
Vol 126 (10) ◽  
pp. 528-533 ◽  
Author(s):  
M. R. Manzano ◽  
J. C. Lenteren ◽  
C. Cardona
2000 ◽  
Vol 18 (2) ◽  
pp. 94-100 ◽  
Author(s):  
Maria R Manzano ◽  
Joop C van Lenteren ◽  
Cesar Cardona ◽  
Yvonne C Drost

Euphytica ◽  
2021 ◽  
Vol 217 (3) ◽  
Author(s):  
Joris Santegoets ◽  
Marcella Bovio ◽  
Wendy van’t Westende ◽  
Roeland E. Voorrips ◽  
Ben Vosman

AbstractThe greenhouse whitefly Trialeurodes vaporariorum is a major threat in tomato cultivation. In greenhouse grown tomatoes non-trichome based whitefly resistance may be better suited than glandular trichome based resistance as glandular trichomes may interfere with biocontrol, which is widely used. Analysis of a collection of recombinant inbred lines derived from a cross between Solanum lycopersicum and Solanum galapagense showed resistance to the whitefly T. vaporariorum on plants without glandular trichomes type IV. The resistance affected whitefly adult survival (AS), but not oviposition rate. This indicates that S. galapagense, in addition to trichome based resistance, also carries non-trichome based resistance components. The effectiveness of the non-trichome based resistance appeared to depend on the season in which the plants were grown. The resistance also had a small but significant effect on the whitefly Bemisia tabaci, but not on the thrips Frankliniella occidentalis. A segregating F2 population was created to map the non-trichome based resistance. Two Quantitative trait loci (QTLs) for reduced AS of T. vaporariorum were mapped on chromosomes 12 and 7 (explaining 13.9% and 6.0% of the variance respectively). The QTL on chromosome 12 was validated in F3 lines.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Valeria Fattoruso ◽  
Gianfranco Anfora ◽  
Valerio Mazzoni

AbstractThe greenhouse whitefly (GW), Trialeurodes vaporariorum is considered one of the most harmful insect pests in greenhouses worldwide. The GW mating behavior has been partially investigated and its vibrational communication is only in part known. A deeper knowledge of its intraspecific communication is required to evaluate the applicability of control methods based on techniques of behavioral manipulation. In this study, for the first time, we provided a detailed ethogram of the GW mating behavior and we characterized the vibrational signals emitted during the process of pair formation. We characterized two types of male vibrational emissions (“chirp” and “pulses”), differently arranged according to the behavioral stage to form stage-specific signals, and a previously undescribed Male Rivalry Signal. We recorded and characterized two new female signals: The Female Responding Signal and the Female Rejective Signal. The mating behavior of GW can be divided into six different stages that we named “call”, “alternated duet”, “courtship”, “overlapped duet”, “mating”, “failed mating attempt”. The analysis performed with the Markovian behavioral transition matrix showed that the “courtship” is the key stage in which male exhibits its quality and can lead to the “overlapped duet” stage. The latter is strictly associated to the female acceptance and therefore it plays a crucial role to achieve mating success. Based on our findings, we consider the use of vibrational playbacks interfering with GW mating communication a promising option for pest control in greenhouses. We discuss the possibility to start a research program of behavioral manipulation to control the populations of GW.


2017 ◽  
Vol 42 (3) ◽  
pp. 503-508
Author(s):  
MMH Khan

Experiments were conducted to observe mating and oviposition behabiour as well as biology of hog-plum beetle. Results revealed that the average mating frequency, mating duration and mating interval were 11.2, 30.5 hours and 60.3 hours, respectively. The highest number of eggs per clusters was on leaf rachis followed by young stem. The mean number of eggs per cluster was 15.70 while the length and breadth of an egg was 1.95 mm and 0.60 mm, respectively. The mean duration of 1st, 2nd, 3rd and 4th instar larvae were 3.80, 3.40, 3.70 and 3.00 days, respectively. The mean pupal period was 22.74 days. The female beetle lived longer (48.30 days) than the male (45.10 days). The size of female beetle was larger (15.30 mm) than male (11.96 mm). The mean length of antennae was 7.42 mm. The length of fore, mid and hind legs were 9.20, 9.50 and 11.70 mm, respectively. Hind wings were larger (16.10 mm length and 7.85 mm breadth) than fore wings (12.38 mm length and 5.30 mm breadth).Bangladesh J. Agril. Res. 42(3): 503-508, September 2017


1994 ◽  
Vol 19 (1) ◽  
pp. 333-333
Author(s):  
D. R. Smitley ◽  
T. W. Davis

Abstract Petunia plants were raised from seed in 6 inch clay pots for 10 wks reaching a height of 10-12 inches in a research greenhouse infested with whitefly at Michigan State University. Each treatment including a control was replicated 6 times. Each replicate was a single plant. Precounts of 5 leaves taken randomly from each plant were completed on 14 and 21 Jul. All immature whitefly (pupae and larvae) were counted. The treatments were blocked based on these precounts. Applications were applied on 22, 30 Jul and 6 Aug with a R&D CO2 sprayer with a single 8008 nozzle at 50 psi until first runoff. Postcounts were made in the same manner as precounts on 28 Jul, 4, 12 Aug.


1969 ◽  
Vol 59 (2) ◽  
pp. 291-297 ◽  
Author(s):  
J. P. Spradbery

The life-history of Pseudorhyssa sternata Merrill was investigated under natural and artificial conditions.When P. sternata and Rhyssa persuasoria (L.) females were present on Siricidinfested logs, P. sternata observed the primary parasite making drill shafts, and after the primary withdrew its ovipositor and moved away, P. sternata located the shaft and inserted its ovipositor to gain access to the host. P. sternata was able to locate R. persuasoria drill shafts aged 1–38 days.P. sternata females were stimulated to oviposition behaviour when presented with paper drilled by R. persuasoria, and this response was enhanced by the presence of wet Siricid frass, or the symbiotic fungus of Siricids. Ovipositor probing was also made through artificial holes into frass. Bioassay of R. persuasoria vaginal and venom glands resulted in considerable probing into filter paper impregnated with vaginal gland extract.It was concluded that P. sternata females probably locate Siricid-infested trees by responding to a generalised stimulus that is potent in larval frass, and which possibly derives from the symbiotic fungus. The cleptoparasite probably finds the drill-shaft by responding to a secretion of the vaginal gland of the primary parasite.


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