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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
Abstract:
The Jujube lappet moth,
Streblotesiva
(Lefebvre)
(Lepidoptera: Lasiocampidae), is as a polyphagous defoliator
on ornamental and forest communities include
Conocarpus
erectus
,
Ziziphusspina-christi
and
Acacia amplicepsin
Bushehr, Khuzestan and Hormozgan provinces of Iran. The
intensification and concentration of a single plant species
or variety such as C.
erectus
in ever larger and more
extensive monocultures increases, the simplification of
agroecosystems compared with natural ecosystems and
the reduction of diversity in large crop monocultures, has
long been associated with reasons for pest such as
S. siva
outbreaks. This study was conducted to determine some
characteristics of the biology and ecology of the moth. The
region of Bushehr was divided into three zones to study the
population dynamics and biology of
S. siva
. Then, stratified
random sampling was used for the range of the insect
abundance and dynamism. The spatial distribution of
S.
siva
larva was studied in field conditions by using regression
models; Taylor’s power law and Iwao’s patchinessregression
during 2015-2016.
S. siva
spends May to September which
is very hot period in the region, as pupae in thin sturdy
silk cocoons on the branches and trunk of
C. erectus,
A.
amplicepsand Z. spina-christi
. In early October, the adult’s
moths appear gradually and after mating, they start laying
eggs on leave and branches. The autumn first generation
had a clear pick point. Then, the average population was
gradually declined and in early November was reached
to the lowest amount in the first autumn generation.
Oviposition of the second autumn generation was occurred
in early November and the peak number of different larva
instars was observed on November25th. After that the
larval growth was started slowly and the insect population
was reached to zero level on 21 January and overwintering
stage began. The spring generation adults were appeared
gradually since the middle of March. This larva’s generation
reached a population peak in the early of April and in the
early of May the population of larvae reached to zero, and
pupae of this generation began their over summering. The
insect has three full generations in cool winters.
S. siva
has
been distributed randomly throughout the province. The
spatial distribution of all larvae of
S. siva
on C.
erectus
was
different in generations. It was estimated as an aggregated
(clumped) and random distribution by using Taylor’s power
law and Iwao’s patchiness regression.
Keywords
—
Acacia ampliceps, Biology,Conocarpus erectus,
Ecology, Streblotesiva, Ziziphusspina-christi
e:
farrar29@gmail.comBionomic of Streblotesiva (Lepidoptera: Lasiocampidae) a polyphagous defoliator at Bushehr, Iran
Farrar N, Zamani A.A, Haghani M, MoeeinyNaghadeh N
and
Azizkhani E
Natural Resources Research and Education Center, Pakistan