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Register a new userMorphometric study of native bumblebees Bombus terresteris (Linnaeus, 1758) dispersed in Syria
دراسة مورفومترية للنحل الطنان المحلي (Bombus terrestris (Linnaeus, 1758 المنتشر في سورية
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نُفّذَ البحث في مختبر بحوث النحل في كلية الزراعة بجامعة دمشق، جمعت العينـات مـن المنطقـة الساحلية – سورية (اللاذقية و طرطوس)، خلال عامي 2009- 2010 ، بهدف إجراء توصيف مورفولوجي للنحل الطنان (.L (terrestris Bombus في سورية، بأخذ القياسات المورفومترية له و تحديد منـاطق انتشاره.
This study was performed in the Research Laboratory of bees at the Faculty of Agriculture, University of Damascus, Samples were collected from the coastal region of Syria (Lattakia and Tartus), during the year 2009-2010, The work aimed to conduct morphological characterization of bumblebees Bombus terrestris (L.) in Syria, through some measurements to determine the distribution (of this type of bees in the Syrian) regions.
References used
Aytekin, A.M. and Çağatay, N., 1999 ز Systematic Studies on the family Apidae (Hymenoptera) in Ankara province; Part I: Bombinae. Turkish Journal of Zoology, 23, 231-241
Aytekin A. M., Rasmont P., Çağatay N. 2003. Molecular and morphometric variation in Bombus terrestris lucoformis Krüger and Bombus terrestris dalmatinus Dalla Torre (Hymenoptera: Apidae). Mellifera 3(6): 34-40
Beton. D., 2004- Morphometric and Genetic differentiation between Anatolia and Cyprus Bombus terrestris (L. 1758) population, Master of Science in Biology, Middle East Technical University, 92 p
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This research deels for the first time the studying fecundity of species blue crab
Portunus pelagicus in our regional waters which as an introduction to breeding and culture.
This research carried out in the period from September 2011 until January
2013.
At the following three region of Lattakia coast : Fishing bort and picnic area, Ibn
Hanni area and Southern Corniche area.Biomonthly samples were collected from Littoral
and Sublittoral area of 8-18m deeps.
Studies results revealed as the following:
The number of mature females 240 female, Ranged: carapace length 4.6-7.9cm
Carapace width between 5.2-13.8cm and body weight between 49.2-171.45 g .
Spawning takes plase during the period from May until December and the rate of the
highest in the month of October.
Absolute fecundity in females of this species was ranged between 21435-143510
eggs, and relative fecundity was ranged between 1924-766651 eggs/g, and the eggs
diameters ranged between 0.25-0.45 mm.
Similar forms of hydrological drainage basins (SHDB) are calculated
using several mathematical equations. The most important and famous
ones are the Elongation ratio and Circulation ratio equations. These
equations are not used only to categorize
the water drainage basins
system according to their geomorphological likeness from being
rectangle or circle, but also they are very helpful means for quantification
and providing geomorphological information about the basins when it
comes to provide geomorphological analysis and explanations for these
basins.
However, this research shows that both equations are not capable of
answering all the questions about SHDB when results are cross validated
by the in-situ observations. It appeared that, when performing the
Elongation ratio equation on chosen hydrological drainage basins, it is
useless and does not match the reality in the field as it doesn’t classify the
drainage basins according to it likeness of being rectangle or circle. As
for Circulation ration equation, the results were generally closer to the
geomorphological reality in the field; however, it did not help in ordering
the drainage basins to their circular morphological similarity. Therefore,
two alternative equations were introduced to overcome these problems.
The results yield better accuracy in classifying the drainage basin according to their morphological shape compared to the rectangular or
the circular especially when cross validation is applied.
The known methods (Horton, Sterhler and Shreef) failed in
classifying the stream ordering system and to estimate the actual volume
for the river net according to the stream ordering class. The proposed
method enabled the classification in spite of the difficulty of coding the
stream ordering system classes based on it.
The experiment was carried out at Jableh region during 2012-2013 in two green
houses to study the effects of using the bumble bees and organic carbon to improve flower
set and yield of tomato hybrid Dalloula . The experiment included three treatmen
ts :
natural pollination (control) ,flowers pollination by organic carbon, and flowers pollination
by bumble bees . The first and second treatments were applied in the first green house , and
the third treatment was applied in the second green house . Results showed that the bumble
bees treatment produced significantly the highest percentage of flower set and yield than
the other treatments . Flower set of tomato over 10 clusters was 89.8% , 83.7% , 39.2% for
bumble bees treatment, organic carbon treatment, and control , respectively. The highest
yield (22 kg/m2)was obtained from bumble bees treatment . Flowers pollinated by bumble
bees gave fruits that looked better in shape , size and color ,and with higher weights . In
the bumble bee pollinated flowers , the quality of fruits was superior for vitamin C , sugar
and acidity .
This paper tests the relationship between economic growth and human
development using annual data from Syria for the period 1970-2000. This
period is chosen for two reasons; firstly because of its political and economic
homogeneity which is conduc
tive to arrive at accurate results and secondly
because the significant changes in the Syrian government's policies in the
fields of education and health like the opining for the first time of private
universities and open learning programs and the involvement of the private
sector in providing health services and health insurance.
Recent technological developments have led to a major development in the ebusiness
environment, announcing the emergence of the new term “knowledge economy”
as one of the most important economic nomenclatures. E-commerce which is considered as
one
of the most significant applications of this economy has evolved a lot in the last decade
according to the evolution of its revenue in many countries around the world.
E-commerce contributes to the economic development through its positive impact on
a range of economic indicators such as GDP and export development. The aim of this
research is to study whether there was a correlation between the development of electronic
commerce and the amount of Syrian exports and imports during the period between 2000
and 2010. The results showed a good correlation between the above mentioned variables,
but with no possibility to assert whether it was a causal correlation in the light of general
economic conditions in Syria during that period.
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