Effect of different kairomonal sources on the performance of Eretmocerus sp. near furuhashii against Bemisia tabaci on cucumber: II - In greenhouse

• Autorzy: Mandour N S , Ren S. , Qiu B. , Wackers F.

Warianty tytułu

PL

Wplyw roznych zrodel kairomonow na aktywnosc gatunku Eretmocerus near furuhashi przeciw Bemisia tabaci na ogorku: II - Warunki szklarniowe

• Języki publikacji: EN

Abstrakty

EN

The effects of application of an artificial honeydew mixture of glucose, fructose and trehalose (GFT), honey and Bemisia tabaci nymph-extract as kairomonal sources in enhancing the foraging efficiency and performance of Eretmocerus sp. near furuhashii on cucumber plants were studied. Experiments were conducted in small greenhouses (4x3*3 m) using life table methods. Life table data indicated that the total mortality in B. tabaci immature cohorts in all treatments was in the order of fourth instar > first instar > second = third > egg > pupa cohorts. The tested kairomonal materials had a significant effect on the rate of parasitism (p > 0.0415) with 13.23, 9.04 and 10.54% higher than that of control in artificial honeydew of GFT, nymph-extract and honey treatments, respectively. B. tabaci egg/adult survival ratio was also significantly affected (p > 0.0001) by the tested kairomonal sources being lowest (22.91%) in nymph-extract treatment. Moreover, the tested kairomonal materials arrested significantly more parasitoids to colonize the treated plants comparing to control. Apparently, the tested materials were significantly effective in attracting the parasitoids up to 3 days after applications then significant difference was not found between treatments.

PL

Badano skutki zastosowania sztucznej mieszaniny glukozy, fruktozy i trehalozy (GFT) imitującej spadź oraz miodu i ekstraktu z nimf Bemisia tabaci na ogórku jako źródła kairomonów dla zwiększenia poszukiwania pożywienia i występowania gatunku Erethmocerus near furuhashi. Eksperymenty przeprowadzono w małych szklarniach (4x3x3 m) posługując się metodą 'life table'. Dane uzyskane za pomocą tej metody wykazały, że ogólna śmiertelność w niedojrzałych kohortach B. tabaci malała następująco: czwarte stadium > pierwsze stadium > drugie = trzecie > jajo > poczwarka. Testowane preparaty kairomonowe miały istotny wpływ na stopień pasożytowania (p > 0.0415), który był wyższy niż w przypadku kontroli odpowiednio o 13,23%, 9,04% i 10,54% dla sztucznej spadzi, ekstraktu z nimf i miodu. Znaczny także był wpływ źródeł kairomonów na stosunek przetrwania jajo/dorosły osobnik B. tabaci (p > 0,0001), a najniższy (22,91%) zaobserwowano w przypadku ekstraktu z nimf. Ponadto, preparaty kairomonowe przyciągnęły znacznie więcej parazytoidów do roślin traktowanych niż do kontrolnych. Testowane preparaty działały efektywnie do trzech dni po ich zastosowaniu.

Słowa kluczowe

EN

kairomone source; kairomone; performance; Eretmocerus; Bemisia tabaci; Homoptera; Aleyrodidae; pest; cucumber; greenhouse; white fly; parasitism; colonization; life table

• Wydawca: -
• Czasopismo: Journal of Plant Protection Research
• Rocznik: 2007
• Tom: 47
• Numer: 3
• Opis fizyczny: p.289-298,fig.,ref.

Twórcy

autor

Mandour N S

• Suez Canal University 41522, Ismalia, Egypt

autor

Ren S.

autor

Qiu B.

autor

Wackers F.

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