Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae)’ nin parazitlenmemiş ve Anagyrus pseudococci Girault (Hymenoptera: Encyrtidae) tarafından parazitlenmiş unlubitler Planococcus citri Risso ve Planococcus ficus Signoret (Hemiptera: Pseudococcidae) arasındaki besin tercihi

Bu çalışma, en önemli unlubit avcılarından biri olan Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae)’nin, aynı ortamda polifag zararlılar Risso (Hemiptera: Pseudococcidae) and Planococcus ficus Signoret (Hemiptera: Pseudococcidae)’un parazitlenmemiş ve Anagyrus pseudococci Girault (Hymenoptera: Encyrtidae) tarafından parazitlenmiş farklı yaşlarda bireyleri arasındaki tercihini belirlemek amacıyla yürütülmüştür. Denemeler ve denemelerde kullanılan böceklerin üretimleri 28±10C sıcaklık, 65±10% orantılı nem ve 16:8 saat (aydınlık: karanlık) ışıklanma koşullarındaki iklim odalarında gerçekleştirilmiştir. Her bir unlubit türü için, parazitlenmemiş ve parazitlenmiş farklı yaşlardaki unlubit bireyleri aynı petri kabına bırakılmış ve bir günlük süre içerisinde avcının hangi bireyleri tercih ettiği belirlenmiştir. Çalışma sonuçlarına göre, avcının ergin dişi ve dördüncü dönem larvasının (L4) beslenmek için, P. citri ve P. ficus’un iki ve dört günlük parazitlenmiş bireylerini parazitlenmemiş olanlara tercih ettiği belirlenmiştir.

Prey preference of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) between unparasitised and parasitised Mealybugs Planococcus citri Risso (Hemiptera: Pseudococcidae) and Planococcus ficus Signoret (Hemiptera:Pseudococcidae) by Anagyrus pseudococci Girault (Hymenoptera: Encyrtidae)

The aim of this study was to determine prey preference of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae), which is one of the most important predators of mealybugs, between unparasitised and parasitised polyphagous pest Planococcus citri Risso (Hemiptera: Pseudococcidae) and Planococcus ficus Signoret (Hemiptera: Pseudococcidae) of different ages by Anagyrus pseudococci Girault (Hymenoptera: Encyrtidae). Experiments and all insects rearing were carried out in controlled conditions (28±10C, 65±10% RH and a photoperiod of 16L:8D h.). For each mealybug species, unparasitised and parasitised mealybugs of different ages were released into same Petri dishes and preference of the predator within one day was also determined. It appears thatfemale and fourth instar larvae (L4) of predator preferred two and four days-old parasitized P. citri and P. ficus as prey than the unparasitised ones.

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