The colonization preference and population trends of larval fig psylla, Homotoma ficus L. (Hemiptera : Homotomidae)
| Autor: | Nabi Alper Kumral, Kıymet Senan Coşkuncu, Nimet Sema Gençer |
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| Přispěvatelé: | Uludağ Üniversitesi/Ziraat Fakültesi/Bitki Koruma Bölümü., Gençer, Nimet Sema, Coşkuncu, Kıymet Senan, Kumral, Nabi Alper |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
Immature stages
Colonization animal structures Turkey Population Ficus Field Climatic factors Biology Bud Stipule Hemiptera Psyllidae Glycaspis Brimblecombei Abundance Models Botany Homotoma ficus Homoptera Fig phenology education Psylla Insecticide Larva education.field_of_study Bursa [Turkey] Phenology Larval colonization preference fungi Temperature biology.organism_classification Horticulture Preference behavior Larval development Instar Eurasia Population density Agronomy and Crop Science Entomology |
| Popis: | The colonization preference and population trends of larval fig psylla Homotoma ficus L. were studied in Bursa, northwestern Turkey, from March 2000 to July 2001. Homotoma ficus overwintered at the egg stage on terminal buds and lenticels of shoots. Larval emergence occurred on 30th and 11th March in 2000 and 2001, respectively. Degree-day (DD) accumulations since 1st January indicate that the emergence of first larvae averaged 47 DD based on the larval developmental threshold of 10.9 degrees C. Although the population trends of Homotoma ficus larvae were affected by temperature and rainfall, there was only significant relationship between larval abundance and temperature. The first instar larvae significantly preferred the bottom and the inside stipule of leaves. The second instar larvae distributed not only on expanding green tissues but also on both the upper and lower surface of leaves corresponding to the fig bud development period. Third to fifth instars colonized significantly greater on the bottom of leaves compared with the stipule and upper surface. In addition, significant linear relationship was found between fig phenology and cumulative larval counts. The importance of the colonization preference of larval instars and the use of fig phenology as well as DD for timing of insecticide treatments are discussed. |
| Databáze: | OpenAIRE |
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