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Register a new userThe adult behavior of longhorn beetle Cerambyxdux F. (Cerambycidae, Coleoptera)
دراسة سلوكية لحفار ساق اللوزيات ذو القرون الطويلة (Cerambyxdux F. (Cerambycidae, Coleoptera
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Aِl-Baath University ورقة بحثية
Publication date
2015
fields
Plant Protecion
and research's language is
العربية
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Shamra Editor
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هدف هذا البحث لدراسة سلوكية الحشرات الكاملة لحفار ساق اللوزيات ذو القرون الطويلة (Cerambyx dux F. (Cerambycidae, Coleoptera على أشجار التفاح. بينت النتائج أن نشاط الحشرات الكاملة يكون نهاري فقط. و تخرج الحشرات الكاملة لكلا الجنسين من طور العذراء ناضجة جنسياً و تتغذى فقط للبقاء على قيد الحياة.
This research was aimed to study the behavior of adults of the Longhorn beetle, Cerambyx dux F. (Cerambycidae, Coleoptera) on apple tree. Results showed that the adults have a diurnal habit.The adults emerged from pupa was sexually matured, and fed only for survival.
References used
BENSE,U1995-Longhorn Beetles Illustrated key to the Cerambycidae and Vesperidae of Europe. MargrafVerlag, Weikersheim: 512 pp
BODENHEIMER, F. S.1930-Die SchadlingsfaunaPalastinas.— Berlin, Parey. 438 pp
BORG, J1922-Cultivation and diseases of fruit trees in the Maltese Islands.Malta, Govt. Printing Press.Pp: 622
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The efficacy of insecticide and plant extracts were tested against beet flea
beetle, Chaetocnema tibialis (Illiger) during 2008 and 2009 seasons. Six
pesticides were evaluated against beet flea beetle, results showed that Cyperino
gave the highest
effective percentage (90.88) followed by Cypermethrin
(90.69%), in comparison with Nimadol (49.35%) after two weeks of treatment.
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effective percentage (60.81) followed Styrax officinalis L. leaves and branches
and Capsicum annuum L. extracts by 31.35, 28.44 and 16.57, respectively, in
comparison with Sopreen (58.55%) after 7 days of treatment. Percentage of
efficacy decreased gradually by increasing the period of exposure after
treatment for plant extracts from 63.19% after 3 days to 51.80% after 10 days
of Melia azedarach L. extract. Whereas the efficacy percentage of Sopreen
increased from 41.67% after 3 days to 74.57% after 10 days of treatment.
Ash toxicity of burning pruning residues of three plant species i.e. apple, grape and
olive was tested against adults of cowpea seed beetle Callosobruchus maculatus
(F.) (Coleoptera, Bruchidae) using the following concentrations: (5, 10, 20, 40
an
d 80) g/kg of cowpea seed. The study was carried out in incubator at fixed
temperature and humidity at Biotechnology Research Center, Al-baath University.
Readings were taken after (24, 48 and 72) h of treatment, and corrected mortality
rates were calculated and values of LC50, LC90, LT50 and LT90.
The study was carried out on the lithium Lubricants in the molten state
under the effect of tempearture, shear stress (τ), and shear rate (γ) by using
capillary viscometer, the corrections have been done to expermintal data. It
was found from the
obtained results that, real viscosity ηc decreased with
increasing real shear rate (γc). Also it was found that the lithium Lubricants is a
pseudoplastic material (n<1).
This study was conducted on predator Coccinella septempunctata at laboratory
conditions , under average of temperature 20± 2Cº.
Results confirmed: Average of life cycle time was :27.3±4.1 days ( egg development
time 6.5±0.5 , larvae 13.2±0.5 , pup
a 7.5±0.5 days).Also the study of predation efficiency
showed that the average number of aphids consumed by each of the four instars larvae
were (57.9±10.6 , 63.7±9.4 , 66.5±8.3 , and 348±43.4) respectively. Therefore the fourth
larva instar seemed more predation efficiency, as compared to other three instars ,it
consumed double that the three instars consumed, but adult consumed 121±4.5 number
of aphids in one day.
A Laboratory study was conducted during 2010 on the biology of seed beetles: Callosobruchus chinensis, C. maculatus and C. analis (Coleoptera: Bruchidae) on lentil seeds for the first specie and chickpea seeds for the last two species. These beetles
completed 10, 8 and 5 generations respectively when they were active (from March to November for the first and second species and from April to October for the third species ). C. maculatus laid an average of 100.29 ± 18.26 eggs over a period of 11.14 ± 0.64 days, C. chinensis laid 83.29 ± 6.32 eggs over 6.43 ± 0.49 days and C. analis 75.29 ± 9.05 eggs over 6.71 ± 0.70 days. The total development process from egg to adult takes an average of 25.87 ± 3.29, 31.43 ± 5.09 and 35.36 ± 3.49 days respectively for species under the ambient laboratory conditions. There was no difference in the development time between males and females except for C. maculatus, where the male emerged about twelve hours before the female. Sex ratio (male: female) was more in favour of female than male in C. chinensis (1: 1.1) and more in favour of male than female in C. maculatus (1.1: 1), but equal in C. analis (1: 1).
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