Biology and bioecology of Nidularia balachowskii Bodenheimer (Hem: Coccoidea: Kermesidae) scale insect in Quercus sp oak trees: Chalabeh region, Kermanshah
Journal Title: Journal of Research in Ecology - Year 2017, Vol 5, Issue 2
Abstract
The Nidularia balachowskii (scale insect) is a member of the Kermasidae family which exclusively feeds on oak trees. This study was conducted on Quercus branti in Zagros forests during 2015 and 2016. The biological phases of the pest on twigs were individually collected, counted and recorded in the laboratory via stereo microscope. Given the average temperature and relative humidity of the region, this insect has first and second instar nymphs. It overwinters as young female, and fertile females appear on the first half of April. The dorsal side of second instar nymphs is adults is fully embroidered with an orderly mosaic design, created by the longitudinal and transverse grooves behind the body. Spawning takes place on the second half of April. The eggs are hatched during 10th to 20th of April and thus first instar nymphs appear. First instar nymphs move on the host in the hot weather of noon to search for a decent place. Often they choose the shaded area of twigs and trunks to locate, so as to protect themselves from the direct radiation of the sun. Second instar nymphs lived from May 5 to June 20, 2015. When the second instar nymphs turn into adults, their white waxy coating gradually molts. Young adult insects are convex, brown and embroidered in mosaic designs (resulting from longitudinal and transverse grooves in the lateral region of the back). They have a long lifespan and spend summer, fall and winter in a diapause state. In April of the following year, their bodies become bulky and gall-like and later begin to spawn. Population dynamic and spatial distribution of this insect are described using Taylor Power Law models and the Iwoa’s Index.
Authors and Affiliations
Nehrangi H, Vahedi HA
Keywords
Related Articles
- EP ID EP254142
- DOI -
- Views 122
- Downloads 0
Influence of sowing time and plant population on seed cotton yield
The present study was conducted to evaluate yield performance of cotton under various plant spacing by keeping normal to maximum plant population under four sowing dates. FH-NOOR cotton variety was sown in triplicate sp...
Effect of partial replacement of nitrate with annatto seeds powder in the physical and chemical properties of chilled beef sausages
The objective of the present study is to evaluate the partial replacement of nitrate with annatto seeds powder at different percentages in the physical and chemical characteristics of chilled beef sausages under 4°C for...
The effects of replacing barley grain with different levels of dried citrus pulp on performance of Zel male fattening lambs
This study aimed to investigate the effects of replacing barley grain with different levels of dried citrus pulp on the performance of Zel male fattening lambs. The treatments were: Treatment 1 (control): 0% dried citrus...
Cement factory design requirements based on industrial ecology
Industrial ecology is a hierarchy of production process which is designed for the material cycle accompanied with optimal raw material obtaining, production, consumption and final disposal aiming to minimize the environm...
Study of growth traits for local Awassi sheep for the genotype of β- lactoglobulin gene
This research was done at the first research station of the Animal Production Department, College of Agriculture, Al-Muthanna University, Muthanna Governorate, Iraq on a sample of 50 local Awassi sheep concerning practic...