Population fluctuations of the citriculus mealybug, Pseudococcus cryptus Hempel (Hemiptera: Pseudococcidae), in citrus orchards of Samandag, Hatay, Turkey
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Tarih
2019
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Heidelberg
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Population fluctuations of Pseudococcus cryptus Hempel (Hemiptera: Pseudococcidae) in citrus, role of the parasitoids, within total parasitism and levels of sooty-mold growth due to honeydew secretion of the pest on trees were revealed during the years of 2006-2009 in Samandag district (Hatay). Additionally, populations of main predatory insects followed the prey populations during the growing season. In 2006, P. cryptus density was 3.41 egg clusters/leaf, 91.80 nymph + adult/leaf and the highest overall parasitism rate for was 41.63%. These figures were 2.23, 54.65 and 38.56%, in 2007; 3.33, 53.00 and 39.22%, in 2008; 4.18, 48.05 and 38.89%, in 2009, respectively. According to the samplings done in citrus orchards throughout the 3 years, P. cryptus populations started to rise in April, reaching the highest densities especially in June-July; and its population tended to decline starting from August due to natural enemies. The mean parasitization ratios as the proportion of the total parasitism were 68.15, 69.48, 70.55 and 71.06% for C. purpurea in 2006, 2007, 2008 and 2009, respectively. These figures were 14.58, 13.25, 12.94 and 12.58% for L. abnormis; 8.25, 7.35, 7.85 and 6.25% for A. pseudococci and 9.02, 9.92, 8.66 and 10.11% for P. muscarum. Levels of sooty-mold growth due to honeydew secretion by P. cryptus varied from 3.42/4 to 2.06/4 on citrus trees from 2006 to 2009, respectively.
Açıklama
Anahtar Kelimeler
Pseudococcus cryptus, Population fluctuations, Hatay, Turkey
Kaynak
Journal of Plant Diseases and Protection
WoS Q Değeri
Q2
Scopus Q Değeri
Q1
Cilt
126
Sayı
5
