Determination of relationships between Cales noacki, 1907 (Hymenoptera: Aphelinidae) with Aleurothrixus floccosus Maskell, 1896 (Homoptera: Aleyrodidae)

Abstract

Host-parasitoid relationship between citrus wooly whitefly, Aleurothrixus floccosus Maskell, 1896 (Homoptera: Aleyrodidae) and parasitoid, Cales noacki Howard, 1907 (Hymenoptera: Aphelinidae) was investigated in laboratory conditions.  When all the immature stages of A. floccosus were given separately, it was observed that C. noacki could parasitized all the stages.  However, the rate of the parasitization was the highest in the second larval stage (29.8%) and then in the third larval stage (21.8%).  Also when all immature stages of A. floccosus were given together, C. noacki preferred the second larval stage (27.6%) and then the third larval stage (17.4%).  The parasitoid females laid an average of 37.6 ± 1.17 eggs during their lifetime.  C. noacki parasitized up to 50 individuals (78,4%) or below of whiteflies when the parasitoid was given with the number of 5, 10, 25, 50, 100 or 150 larvae of whiteflies in the second larval stage.  It was defined that the parasitoid showed Holling’s type II functional response in different quantities of A. flocosus and the R2 value was to be quite high (0.967).

Keywords

• Cales noacki
• Aleurothrixus floccosus
• lifetime
• functional response

Cales noacki Howard, 1907 (Hymenoptera: Aphelinidae) ile Aleurothrixus floccosus Maskell, 1896 (Homoptera: Aleyrodidae) arasındaki ilişkilerin belirlenmesi

Abstract

Turunçgil pamuklu beyazsineği, Aleurothrixus floccosus Maskell, 1896 (Homoptera: Aleyrodidae) ve parazitoiti, Cales noacki Howard, 1907 (Hymenoptera: Aphelinidae)’nin laboratuvar koşullarında konukçu-parazitoit ilişkileri incelenmiştir. C. noacki’ye A. floccosus’un tüm ergin öncesi dönemleri ayrı ayrı verildiğinde; parazitoitin beyazsineğin tüm larva dönemlerini parazitlediği, ancak en fazla 2. larva dönemini (%29.8), daha sonra da 3. larva dönemini (%21.8) parazitlediği belirlenmiştir.  A. floccosus’un ergin öncesi dönemlerinin tümü bir arada verildiğinde ise C. noacki yine en fazla beyazsineğin 2. larva dönemini (%27.6) daha sonra 3. larva dönemini (%17.4) tercih etmiştir.  Parazitoitin ergin dişileri yaşamları süresince ortalama 37.6 ± 1.17 adet yumurta bırakmışlardır.  C. noacki’ye 5, 10, 25, 50, 100 ve 150 adet beyazsineğin 2. larva dönemi verildiğinde; parazitoit en fazla 50 birey (%78.4) ve altındaki sayılarda beyazsineği parazitlediği belirlenmiştir.  C. noacki’nin, farklı A. flocosus yoğunluklarında Holling’in II. Tipte işlevsel tepki eğrisi oluşturduğu ve R2 değerinin oldukça yüksek (0.967) olduğu tespit edilmiştir. 

Keywords

• Cales noacki
• Aleurothrixus floccosus
• yaşam süresi
• işlevsel tepki

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