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J Parasit Dis Diagn Ther 2017 | Volume 2 Issue 4
International Conference on
Zoology, Microbiology & Medical Parasitology
October 30-November 01, 2017 | Chicago, USA
Population parameters of
Tetranychus urticae
(Acari: Tetranychidae) on five rose varieties under
laboratory conditions
Mostafa Haghani, Seyedeh Fatemeh Ranjbar, Amin Sedaratian-Jahromi and Mojtaba Ghane-Jahromi
Yasouj University, Iran
T
wo-spotted spider mite (TSSM),
Tetranychus urticae
Koch, is one of the most important pests of greenhouse
crops including rose varieties. The main aim of this research
was to evaluate resistance of different rose varieties to
T. urticae. Therefore, population parameters of TSSM on
five rose varieties (Full house, Cherie brand, Yasie, Marina
and Avalanzh) were estimated at 25±1°C, 65±5% RH and a
photoperiod of L16:D8 h. Rose varieties had significant effect
on population parameters of
T. urticae
. The significantly
highest and lowest value of intrinsic rate of increase (rm)
was recorded 0.380 and 0.255 day
−1
on Yasie and Avalanzh,
respectively. The recorded values for this parameter on Full
house, Cherie and Marina were 0.354, 0.368 and 0.331
day
−1
, respectively. In addition, doubling time (DT) and mean
generation time (T) had the highest values on Avalanzh
(2.703 and 14.368 days, respectively) and the lowest values
of these parameters were obtained on Yasie (1.801and
9.867 days, respectively). Finite rate of increase (λ) on the
above-mentioned varieties was determined 1.425, 1.442,
1.471, 1.395 and 1.290 day
−1
, respectively. Full house had
the highest value of net reproductive rate (R0), (47.620
offspring). The lowest value of this parameter was shown
on Marina and Avalanzh, 38.956 and 38.984 offspring,
respectively. According to the results, Yasie is the most
favorable and Avalanzh is the most resistant variety to the
T. urticae
than the other varieties. The results of this study
indicated that rose variety is a factor which can significantly
affect the population parameters of
T. urticae
. The findings of
the present study could be useful to design a comprehensive
IPM program for this pest on different rose varieties.
Speaker Biography
Mostafa Haghani is an Applied Entomologist with a strong interest in Population
Ecology, Biological Control, Thermal Biology, Tritrophic Interactions, Integrated
Pest Management and Cop Loss Assessment of insects and mites pests especially
on protected crops (vegetable crops and ornamental flowers). He have enjoyed
interactions with other researchers in many areas, especially the Population Ecology
and IPM, which have given him opportunities to learn about these fields. He has done
research on biological control of vegetable leaf miner using parasitoid wasps and
efficiency of egg parasitoid Trichogramma on laboratory hosts.
e:
Haghanima@yahoo.com