Zakkum kabuklubiti, Aspidiotus nerii Bouché, 1833 (Hemiptera: Diaspididae)’nin tek ve çift eşeyli formlarının kabak üstünde popülasyon özellikleri

Year 2018, Volume: 42 Issue: 1, 13 - 22, 26.04.2018

Alime Bayındır Erol , Mehmet Salih Özgökçe

https://doi.org/10.16970/entoted.341521

Abstract

Aspidiotus nerii Bouché, 1833 (Hemiptera: Diaspididae) esas olarak
tropik ve subtropik bölgelerde bulunan yaygın bir türdür. Konukçularının bağlı
olduğu bitki familyası sayısının 100’den fazla olduğu rapor edilmektedir.
Özellikle limon, zeytin ağaçları ve zakkum gibi süs bitkileri üstünde meydana
getirdiği zarar önemlidir. Hem çift eşeyli ve hem de tek eşeyli formlara
sahiptir. Zararlının her iki formunun popülasyon dinamiklerini araştırmak için
2016 yılında kontrollü koşullarda yaşam çizelgesi oluşturulmuştur. Çalışmalar,
25±1ºC, %65±1 orantılı nem ve 16:8 A:K şartlarına ayarlanmış iklim kabinlerinde
kabak üstünde yürütülmüştür. Çalışma sonunda zararlının her iki formunun yaşam
çizelgesi parametreleri sırasıyla: kalıtsal üreme yeteneği (r), 0.039 ve
0.042 d^-1; artış oranı sınırı (λ), 1.040 ve 1.043 d^-1;
net üreme gücü (R_o) 14.07 ve 27.19 d^-1; ortalama
döl süresi (T) 67.51 ve 78.49 gün olarak hesaplanmıştır. Bu
parametrelerden R_o ve T istatistiksel olarak önemli
bulunmuştur. Bu farklılıklardan dolayı popülasyon tahminlerine göre tek eşeyli
formun popülasyon büyüklüğünün çift eşeyli forma göre 1.9 kat daha yüksek
olabileceği hesap edilmiştir.

Keywords

Aspidiotus nerii, çift eşeyli form, üreme oranı, iki-eşeyli yaşam çizelgesi, tek eşeyli form

Population features of biparental and uniparental forms of the oleander scale, Aspidiotus nerii Bouché, 1833 (Hemiptera: Diaspididae) on squash

Abstract

            Aspidiotus nerii Bouché, 1833 (Hemiptera: Diaspididae) is a
cosmopolitan pest, mainly found in tropical and subtropical regions. It has
been reported from hosts corresponding to more than 100 plant families.
Particularly important is the damage caused on lemon and olive trees and
ornamental plants such as oleander. It has both biparental and uniparental
forms. To investigate the population dynamics of both forms of pest, life
tables were constructed under controlled conditions in 2016. The studies were
carried out on squash in climatic cabinet adjusted to 25±1ºC, 65±1% RH and 16:8 h L:D photoperiod. At
the end of the study, life table parameters of both forms of pest were
calculated. Namely intrinsic rate of increase (r), 0.039 and 0.042 d^-1;
finite rate of increase (λ), 1.040 and 1.043 d^-1; net
reproductive rate (R₀), 14.07 and 27.19 d^-1; mean
generation time (T), 67.51 and 78.49 d, for biparental and uniparental
forms, respectively. R₀ and T were statistically significant different between the
two populations. Given these differences, it was estimated that the population
size of the uniparental form may be 1.9 times higher than the biparental form.

Keywords

Aspidiotus nerii, biparental form, fecundity, two-sex life table, uniparental form

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