Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Effects of pyriproxyfen and chlorfluazuron on the external bacteria isolated from Monomorium pharaonis (L.) collected from different cities in Cairo governorate
1
13
EN
Reda
F. A.
Bakr
-Department of Entomology, Faculty of Science, Ain Shams University
-Biology Department, Faculty of Science, King Khalid University, Abha,KSA
redabakr55@gmail.com
Hafez
G.
A.
Department of Entomology, Faculty of Science, Ain Shams University
Ibrahim
I.
A.
Biological Application Dep. Nuclear Research Center, Atomic Energy Authority
Abdou
M.
A.
Department of Entomology, Faculty of Science, Ain Shams University
10.21608/eajbsa.2015.12918
The present study was examined the effect of two IGRs (pyriproxyfen & chlorfluazuron) on the external bacterial flora isolated from the Pharaoh ant workers<em>Monomorium pharaonis</em> (L.). The Pharaoh ant workers were collected from three different cities in Cairo governorate. Different concentrations of 0.1%, 0.5% & 1% pyriproxyfen and 0.001%, 0.01% & 0.1% chlorfluazuron were used.
Bacteria associated with Pharaoh ant workers (indoors & outdoors collected samples) were isolated before and after treatment with IGRs. It was found that, the external bacteria isolated from outdoors samples were less counted than those collected from indoors.The presence of some pathogenic bacteria was recorded. The used IGRs cause significant reduction in the count of bacteria in external isolates. Kinds of isolated bacteria were also affected by IGRs treatment and some kinds of them were disappeared in treated samples.
Pyriproxyfen,chlorfluazuron,Monomorium pharaonis,Bacterial flora
https://eajbsa.journals.ekb.eg/article_12918.html
https://eajbsa.journals.ekb.eg/article_12918_5101d0f2b39b3d2b98e9a66605b5cc79.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Insects in ancient (Pharaonic) Egypt: a review of fauna, their mythological and religious significance and associated diseases
15
32
EN
Mohamed
A.
Kenawy
Department of Entomology, Faculty of Science, Ain Shams University, Abbassia, Cairo
mohamedkenawy85@yahoo.com
Yousrya
Abdel-Hamid
Abdel-Hamid
Research Institute of Medical Entomology, The General Organization for Institutes and
Teaching Hospitals, Ministry of Health, Dokki, Giza, Egypt.
10.21608/eajbsa.2015.12919
Based on the available and scattered reports, this article reviews the insects that were known to ancient Egyptians (butterflies and moths, honey bee, locust, praying mantis, beetles, ants, flies, mosquitoes, bed-bugs, fleas and head lice). The mythological and religious significance and associated diseases (malaria, filariasis, leishmani<span style="color: black;">asis</span> and plague) of such insects were also included. The present status of the medically important insects and their borne diseases in modern Egypt were discussed. In conclusion, in spite of the large variety of insects occurring in Egypt at present, only few have been represented and named in ancient Egypt.
ancient Egypt,insects,Insect-,borne diseases,Malaria,Filariasis,Leishmaniasis,P%
https://eajbsa.journals.ekb.eg/article_12919.html
https://eajbsa.journals.ekb.eg/article_12919_da03a5dbbd39969e4975831e73c70fc6.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Evaluation the efficiency of clove oil (Syzygium aromaticum) in controlling cowpea seed beetle, Callosobruchus maculatus (F.) (Coleoptera: Bruchidae)
33
40
EN
Albandari
F.
Al Yousef
Biology Department, Faculty of Science, Princes Nora University, Riyadh, K.S.A.
10.21608/eajbsa.2015.12920
The present work aimed to studying the effect and evaluate the effectiveness of the clove oil as a natural product against the adults of the cowpea seed weevil, <em>Callosobruchus maculatus</em> (F.) (Coleoptera: Bruchidae) under controlled laboratory conditions.
The study was carried out at the Biology Department, Faculty of Science, Princes Nora University, Al Riyadh, Saudi Arabia, using four concentrations of clove oil (5, 2.5, 1.25 and 0.12 mg/L).
Results obtained indicated that, the mortality percentage of the adult beetles increased with the increase of the oil concentration and the period after treatment. The percentage of mortality was 63.333% two days after treatment at the highest concentration (5mg/L), increased to reach 96.667% four days after treatment at the same concentration. At the lowest concentration (0.12 mg/L), the percentage of mortality was 73.333% four days after treatment and the LC<sub>50</sub> value was 2.188 mg/l and the LC<sub>90</sub> was 75.445 mg/l after two days from treatment.
ancient Egypt,insects,insect,borne diseases,Malaria,Filariasis,Leishmania,P%
https://eajbsa.journals.ekb.eg/article_12920.html
https://eajbsa.journals.ekb.eg/article_12920_25a84692790cfe0a9e1eff3e11178b6f.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Structure, production and constraints of honey hunting and traditional beekeeping activities in patigi, Kwara state, Nigeria
41
52
EN
Ajao
A.
M.
College of Pure and Applied Science, Department of Bioscience and Biotechnology, Kwara State University, Malete,P.M.B. 1530, Ilorin, Kwara State, Nigeria
ajaoadeyemi@yahoo.com
Oladimeji
Y.
U.
Department of Agricultural Economics and Rural Sociology, Faculty of Agriculture, Ahmadu Bello University,
P.M.B. 1044, Zaria, Kaduna State, Nigeria
10.21608/eajbsa.2015.12921
Honey has continued to play an important role in nutrition and medicine; it is an ingredient in many herbal remedies and a crucial component of the bride price for many tribes in Nigeria. Several methods and structures including traditional, modern beekeeping, and age long honey hunting are employed to obtain honey for its several uses. This study aims to study honey bee farming structure; production capacity and constraints faced by both honey hunters and traditional beekeepers. A proportional random sample size of 190 bee honey farmers comprising of 110 bee honey hunters and 80 traditional beekeepers were used for the study. Data were collected through structured questionnaire and direct participation. The results of the study indicated that about 53% and 70% of the honey hunters and traditional beekeepers were within 20-30 years and 31-40 years of age respectively. The result also revealed that 86.3% of honey hunters and 87.5% of beekeepers employed smoking as mean of honey harvest. Further, 4.7litres, 4.8litres, 5.8lites and 6.2litres of honey were harvested from tree cavities, colonies on tree branches, woven grasses and calabashes respectively. Provision of necessary modern beekeeping tools, training, and credit facilities could minimize constraints faced by bee farmers and improve their welfare.
Constraints,Honey,Structures,Nigeria
https://eajbsa.journals.ekb.eg/article_12921.html
https://eajbsa.journals.ekb.eg/article_12921_2e3d941670f99cc97706a9f7bf6e31ee.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Impact of melon varieties, planting dates and use of sticky traps on suppressing aphid populations on melon plants
53
60
EN
Rania
S.
Rashwan
Plant protection Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt.
raniarashwan@ymail.com
10.21608/eajbsa.2015.12922
Field studies were conducted to determine susceptibility of three melon varieties ;Musk melon, Sharlyne and Ogen melon, to infestation with aphid and effect of planting dates (1<sup>st</sup> March, 15<sup>th</sup> March and 1<sup>st</sup> April) and use of sticky trap at two position and two heights on the suppressing population of melon aphids. The results reveled that the three tested varieties harbored a different levels of aphid infestation during two seasons 2012 and 2013, where Musk melon variety harbored the highest infestation level with aphid for the two tested seasons, followed by Ogen melon, while Sharlyne variety harbored the lowest number of aphid populations. Planting dates appeared highly significant effect on the aphid populations, where earlier planting date (1<sup>st</sup> March) showed the lowest population of aphids (32.6 and 22.8 individual/ 20 leaves) for two seasons respectively, while the highest population of aphids were recorded on the latest planting date 1<sup>st</sup> April (88.6 and 76.2 individual / 20 leaves).Yellow sticky traps were tested in vertical and horizontal position and two heights. Trap in position vertical caught more aphids than traps in horizontal position. Significant differences were detected between 30 cm and 40 cm height of the trap above the ground, where the total means number was (67.7 and 41.35 individual/ trap at 30 highest; 40.75 and 26.35 at 40 highest respectively).
https://eajbsa.journals.ekb.eg/article_12922.html
https://eajbsa.journals.ekb.eg/article_12922_78998032c2d33065a72265248711887c.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
The effect of different host plants on the antennal and mouthparts sensilla of the larvae of Spodoptera littoralis; (Lepidoptera; Noctuidae)
61
62
EN
Azza A
A.
Awad
Zoology Department, Faculty of Science, Assiut University, Egypt
Ahmed
M.
Korayem
Zoology Department, Faculty of Science, Assiut University, Egypt
Mohamed
A. M. A
Amr
Plant Protection Res. Institute, Agricultural Research Center, Giza, Egypt
Reham
A.
Aboelela
Zoology Department, Faculty of Science, Assiut University, Egypt
10.21608/eajbsa.2015.12923
The distribution and morphology of various sensory organs (sensilla) on the antenna and mouthparts of <em>Spodoptera littoralis </em>larvae were investigated using scanning electron microscopy. In this study we focused on the morphological alterations of the antennal and mouthparts sensilla of <em>Spodoptera littoralis</em> last instar larvae reared on different host plants; alfalfa, cotton, and soybean leaves. Based on our results, we found that sensillum chaeticum on the antenna was morphologically affected by shifting the host plant since it became longer in those larvae reared on soybean and alfalfa leaves when compared with those reared on cotton leaves. Furthermore, several morphological variations were observed in sensilla trichodea on the labium, mandibles, and labrum by shifting the host plant. In addition, clear morphological changes were observed in sensillum digitiformium on the maxillary palps due to changing the host plant.On the other hand, no morphological changes in antennal basiconic, trichodium and styloconic galeal sensilla styloconica, maxillary campaniform and placodeum sensilla were observed. Taken together, these results showed that shifting host plants of <em>Spodoptera littoralis</em> larvae induced plasticity and morphological changes of the antennal and mouthparts sensilla.
https://eajbsa.journals.ekb.eg/article_12923.html
https://eajbsa.journals.ekb.eg/article_12923_5af9f0e6a9c090c061b9df6377bca4ee.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
A Study of some biological aspects of the spider Theridion jordanense Levy & Amitai, 1982 (Araneae: Theridiidae) in Egypt.
73
77
EN
Gihan
M.E.
Sallam
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
Nahla
A.I.
Abd El-Azim
Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt
Mohammad
A.
Mohafez
Faculty of Agriculture, Al-Azhar University, Cairo, Egypt
10.21608/eajbsa.2015.12924
<em>Theridion</em> <em>jordanense</em>Levy & Amitai, 1982was collected from grape trees in El-Sadat city, El-Menofia Governorate, Egypt. Biological aspects were studied under laboratory conditions (26-28<sup>o</sup>C and 60-70% R.H.). Males reached maturity after 4 spiderlings (instars) (64±3.1 days), while females reached maturity after 5 spiderlings (instars) (88±3.7 days). Spiders were fed on different instars of larvae of cotton leaf worm. Food consumption was observed.
Theridion jordanense,Theridiidae,biological aspects,Feeding behavior,Spodoptera littoralis,food consumption,Egypt
https://eajbsa.journals.ekb.eg/article_12924.html
https://eajbsa.journals.ekb.eg/article_12924_163557d53066e1f37b7050018864b929.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Side effects of certain common insecticides used in cotton fields on the egg parasitoid, Trichogramma evanescens west. (Trichogrammatidae: hymenoptera)
79
87
EN
Essam
M.
Mohamed
Cotton Pesticides Bioassay Dept., Plant Protection Res. Institute, ARC.
10.21608/eajbsa.2015.12925
Studies on the toxicity of some common insecticides used in cotton fields against <em>Trichogramma evanescens</em> were carried out under laboratory and field conditions following the guidelines recommended by International Organization for Biological Control (IOBC). Field Recommended Concentrations (FRCs) of five insecticides viz., Dursban 48 %, Sumi-alpha 5 %, Cascade 10 % Spinotor 24 % and Agerin were tested against immature stages of the egg parasitoid under laboratory conditions.
Concerning the insecticide effects on the development of immature stages inside host eggs, results revealed only Sumi-alpha, Dursban and Spintor were categorized as “class 3 – moderately harmful (80 ≤ E ≤ 99%), while, Agerin and Cascade 10 % were categorized as class 1 – harmless (E < 30%) to all.
In the experiment free-choice and non-choice trails were conducted to evaluate the acceptance of the female wasps to the less toxic insecticides. It is evident from the results presented with free-choice and non-choices of treated eggs females of <em>T. evanescens</em> significantly reduced the parasitism and adult emergences of eggs treated with Dursban, Sumi-alpha, and Spintor, while, in the case of Agerin and Cascade 10 % were considerably safe.
Under field conditions, after spraying directly, despite the statistically significant differences among the treatments, only Sumi-alpha and Dursban were categorized as “class 3 – moderately harmful (80 ≤ E ≤ 99%). While, Cascade 10 % was categorized as class 2 – slightly harmful (30 ≤ E ≤ 79%), Agerin was categorized as class 1 – harmless (E < 30%), according to the IOBC ranking.
After five days from spraying, Spintor was the most effective treatments followed by Dursban and Sumi-alpha on reducing the percentages of parasitism of the egg parasitoids of <em>T. evanescens</em>. Only Spintor and Dursban were categorized as “class 2 = slightly harmful (30 ≤ E ≤79 %), while, Agerin , Cascade and sumi-alpha were categorized as class 1 – harmless (E < 30%), according to the IOBC ranking
Among the tested insecticides, the harmless ones should be chosen in a program of integrated pest management (IPM) since it allows the use of pesticides without harm to the biological control agent <em>T. evanescens</em>. On the other hand, the moderately harmful pesticides should be excluded or replaced by another product with less impact whenever it is possible.
Theridion jordanense,Theridiidae,biological aspects,Feeding behavior,Spodoptera littoralis,food consumption,Egypt
https://eajbsa.journals.ekb.eg/article_12925.html
https://eajbsa.journals.ekb.eg/article_12925_22e8ba40e331037500368d0ae8c1a8d3.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Dominant Inheritance of Plutella xylostella selected with Flufenoxuron
89
98
EN
Hanan
Salah-El-Din Taha
Diab
Central Agricultural Pesticides Laboratory, Dokki, Giza, Egypt.
10.21608/eajbsa.2015.12926
Dominance study was a petition needs to measure insecticide resistance problems to a notorious pest as <em>Plutella xylostella</em> and for IRM strategy planning success<em>.</em> Flufenoxuron insecticide was chosen for doing a laboratory selected strain for some resistance assessments. Studies on cross resistance of flufenoxuron resistant strains revealed a slight tolerance to lambdacyhalothrin, alphacypermethrin, thiocyclam and chlorfenapyr but no cross resistance to dimethoate, imidacloprid. Resistance stablility examined in both the flufenoxuron selected strain and the backcross selected x susceptible in the absence of exposure to insecticides, results revealed that the mortality were declined slowly at F3, F5 and F7. Results of reciprocal crossing experiments suggested that flufenoxuron resistance was inherited as an incomplete recessive trait. Values of the degree of dominance were estimated -0.63 and -0.66 for F1 larvae with resistant and susceptible female parents, respectively. Results of bioassays on F1 progeny of the backcrossed with the resistant parent strain and the F2 generations suggested that resistanceautosomaly inherited and might be controlled by some loci. Analysis of probit lines from F1 reciprocal crosses indicated that resistance to flufenoxuron was inherited autosomaly as an incompletely recessive and probit lines showed no plateau at 50% mortality (probit = 4.0) and 3.4 for F2 at 25-75% mortality. The <em>x<sup>2</sup> </em>analysis of response ratio statistics of a monogenic model from F1 susceptible back crosses suggested that more than one locus is responsible for resistance to flufenoxuron.
Plutella,Flufenoxuron,resistance,Dominance
https://eajbsa.journals.ekb.eg/article_12926.html
https://eajbsa.journals.ekb.eg/article_12926_7f585296603bac31fc5ae82032f4786d.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Influence of agricultural fertilizer practices on certain piercing sucking pests infesting cucumber plants
99
104
EN
Wahba
B.
S.
Plant protection research institute, A.R.C., Dokki, Egypt.
10.21608/eajbsa.2015.12927
This study was carried out during summer and nili Plantations in 2014 in Plant Protection Research Institute Station, Qualiobeya Governorate to sheet the light on the effect of different types and rates of fertilizer treatments on the rates of infestation of cucumber plants<em>, cucumis sativus</em> L. by different pests, <em>Tetranychus urticae</em> kach<em>, T. cucurbitacearum</em> (sayed) (eggs and mobile stages), <em>Bemisia tabaci</em> (Gennadius) (eggs, nymphs and pupa), <em>Thrips tabaci</em> (Lindquist) (nymphs and adults) and on the resultant fruit crop yields. Data revealed treatments, mycorrhiza and NPK recorded the highest infestation rate by <em>T. urticae, T. cucurbitacearum </em>and <em>T. tabaci</em> in summer and nili plantations. while (N<sub>2</sub>+k<sub>2</sub>o) fertilizer treatment curried out the lowest infestation rates by <em>T. urticae, T. cucurbitacearum</em> and <em>B.tabaci.</em> On the contrary N<sub>2 </sub>fertilizer recorded the highest infestation with whitefly. Orange mealy bugs, <em>pseudococcus obscures</em> Essing were firstly recorded on cucumber plants throughout nili plantation only by having the highest infestation on the plants treated with N<sub>2</sub> fertilizer being significant differences with the other treatments except for mycorrhizal treatment. Both treatments, NPK and microelements recorded insignificant the highest weight in fruit crop yields. While mycorrhizal treatment demonstrated the lowest weight of crop yield.
Cucumber,fertilizer,Tetranychus,Urticae,T. cucurbitacearum,Bemisia,Thrip,Tabaci,Pseudococcus obscures
https://eajbsa.journals.ekb.eg/article_12927.html
https://eajbsa.journals.ekb.eg/article_12927_bac941c8fe98e3452f872563fedfd600.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Electron microscope study on workers antennae and sting lancets of three subspecies of honey bee Apis mellifera L. (Hymenoptera: Apidae) and its bearing on their phylogeny
105
124
EN
Khalaf-Alla
S.
Ahmed
Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Roxy, Heliopolis, P.C. 11341, Cairo, Egypt.
Saadya
M.
. El-Bermawy
Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Roxy, Heliopolis, P.C. 11341, Cairo, Egypt.
Heba
Z.
El-Gohary
Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Roxy, Heliopolis, P.C. 11341, Cairo, Egypt.
Abeer
M.
Bayomy
Biological and Geological Sciences Department, Faculty of Education, Ain Shams University, Roxy, Heliopolis, P.C. 11341, Cairo, Egypt.
10.21608/eajbsa.2015.12928
Ultrastructure of antennae and sting of the honey bee workers in three subspecies of <em>Apis mellifera</em>; Egyptian <em>A. m. lamarckii</em>, Carniolan <em>A. m. carnica</em> and Italian <em>A. m. ligustica</em> was investigated. Twelve types of sensilla were recorded on the worker antennae; placodea, basiconica, trichodea types (A, B, C and D), ampullaceal, coeloconica, coelococapitular, non-innervated hair seta, campaniformia and sensilla chaetica. The latter is recorded for the first time on antennae of <em>A. mellifera</em>. The number and distribution of the various types of sensilla are recorded. Sensilla trichodea were found most frequently and were present on all the antennal segments. Sensilla placodea were present on the distal eight flagellomeres. Sensilla ampullaceal and sensilla coeloconica were present on the distal five while sensilla campaniformia were confined to the distal seven flagellomeres. The barbs carried on the lancets of sting differ in numbers among the workers of the three subspecies; 10, 9 and 7 in <em>A. m. lamarckii</em>, <em>A. m. carnica</em> and <em>A. m. ligustica</em>, respectively. Depending on morphometrical analysis, a dendrogram separated the Egyptian subspecies from the other two subspecies with a highly genetic distance of 0.25 between them. The Italian and the Carniolan subspecies were grouped into one main cluster with a genetic distance of 0.01 between them.
https://eajbsa.journals.ekb.eg/article_12928.html
https://eajbsa.journals.ekb.eg/article_12928_e8affcc0a172593219768922941a8949.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Impact of some weather factours, plant age, plant growth stages and sowing date on population fluctuation of some sap-sucking pests attacking fenugreek plants
125
139
EN
Afsah
A. F.
E.
Plant protection research institute, 7 Nadi El-Said street, dokki, Giza, Egypt
10.21608/eajbsa.2015.12929
Field experiments were carried out at Plant Protection Research Station at Qaha, QalubiyaGovernorate for two successive seasons (2010/2011-2011/2012) in order to study the effect of some weather factors ,plant age and growth stages of the fenugreek Plant (<em>Trigonella foenum-graecum</em> L.) during three sowing dates (Oct.31<sup>st</sup>, Nov.15<sup>th</sup> and Nov.30<sup>th</sup>) on population fluctuation of three aphid species [pea aphid, <em> Acyrthosiphon pisum</em> (Harris); cotton aphid , <em>Aphis gossypii</em> (Glover) and Leguminous aphid , <em>Aphis craccivora</em> Koch and cotton thrips,<em> Thrips tabaci</em> Lind. In the first season, population of <em>Aphis</em> spp. had four, two and three peaks in the first, second and third sowing dates, respectively. The four peaks of aphid population during first sowing date recorded mean numbers of 2.0, 9.0, 4.0 and 10.67 insects / 20 buds on Nov., 29<sup>th</sup> 2010, Jan.,17<sup>th</sup>, Feb., 14<sup>th</sup> and Feb., 28<sup>th</sup> 2011, at 29,78, 106 and120 days from sowing date ,respectively. In respect to, second sowing date the first peak of 2.33 moving stages / 20 buds, occurred on Jan., 24<sup>th</sup> 2011 at 70 days from sowing date, the second one with mean numbers of 6.0 individuals / 20 buds were recorded on the Feb., 28<sup>th</sup> 2011 at 105 days (plant age). While three peaks through third sowing date represented by mean numbers of 1.0, 3.33 and 2.0 insects per 20 buds on Jan., 10<sup>th</sup>, Feb., 21<sup>st</sup> and <sup> </sup>March, 14<sup>th</sup> at 41, 83 and 104 days from sowing date , respectively. In the second season, the peak numbers and account of aphids/20buds were recorded slightly differences. Pea aphid was insignificantly positive correlated with plant age for all sowing dates during two study seasons except for first date in the first season was significantly positive correlated. Also, pea aphid was the more dominant aphid species through three sowing dates during two seasons. Population fluctuation of <em>T.tabaci</em> had two, five and four peaks at the three sowing dates, respectively, in the first season. But in the second season<em> T.tabaci</em> recorded three, five and four peaks at first, second and third sowing dates, respectively. The three tested sowing dates arranged descending, where the <em>T. tabaci</em>population recorded as 7.29, 4.49 and 3.27 insects / 20 buds, respectively, in the first season. The general trend of <em>T. tabaci</em> infestation in the second season recorded gradually increasing, characterized with significant differences between vegetative, flowering and fruiting stages in the three sowing dates. Also the fruiting stage in the three sowing date is the most stage infested by <em>T. tabaci</em>.
Statistical analysis of results for the two seasons was indicated that, the suitable date for fenugreek cultivation in Qualibia ,Governorate , Egypt Nov.,15<sup>th</sup> where recorded mean numbers 1.67 ; 2.13 aphids / 20 buds and 4.49 ; 3.31 thrips / 20 buds in the first and second seasons , respectively, compared with other sowing dates. Also, the fruiting stages in the three sowing dates during two seasons is the most stage infested by <em>T. tabaci</em> followed by flowering and vegetative growth stages expect of, third date in the first season
weather factors,plant age,growth stages,the fenugreek Plant- aphid species- Qalubiya Governorate
https://eajbsa.journals.ekb.eg/article_12929.html
https://eajbsa.journals.ekb.eg/article_12929_c4fe52236a2f25633cfed815dd85085d.pdf
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
8
1
2015
06
01
Annual Generations and Population Fluctuation of Tomato Leaf Miner Moth Tuta absoluta (Meyrick) (Lepidoptera :Gelechiidae) in El-Behera Governorate, Egypt.
141
153
EN
Reda
M. M.
Tabikha
Plant Protection Department Faculty of Agriculture, Damanhour University, Egypt
Abdel-Nasser
T.
Hassan
Plant Protection Research Institute, Dokki, Giza, Egypt
10.21608/eajbsa.2015.12932
Egypt is considered one of the important tomato producers in the world that has appropriate climate for tomato along year in three different plantation seasons <em>viz</em>., winter, autumn and summer. Tomato infestation with tomato leaf miners (TLM) reached 70% in El-Behera governorate in 2011. So current study aimed throw some lights on population fluctuation of TLM males along two year (2013-2014) and different seasons by using pheromone traps, in addition studying the effect of climatic factors (Maximum, minimum, mean temperature and relative humidity)on males activity. Moreover and basically estimation numbers, duration of annual generations and population density in all observed generation by applying two different mains[First main depend on Daily Degree Units and second main suggested by Audemard and Millaire (1975) and emended by Iacob (1977)] in generation estimations were also concerned. Results reflected that TL Mmale population density of LTM varied from season to another. Spring season was the highest followed by summer, but each of winter and autumn were the lowest, that there were no significant differences between the last two seasons. Effect of tested climatic factors is obvious along a year, not can be observed in specific seasons, that their combined effects responsible as a group for 34.09% and 35.76 % on population density in the both years of study, respectively. Eleven annual generations were observed along a year in both years of study, moreover times and duration of all estimated generations were paralleled in the both used mains of generation estimations. The first and eleventh generations were nearly longest but with lowest in TLM male population numbers. The Ninth generation, considered as overlapped generation between summer and autumn season. Each of spring, summer and autumn season have three generations
https://eajbsa.journals.ekb.eg/article_12932.html
https://eajbsa.journals.ekb.eg/article_12932_db398ccffc1ca434f132215e740bc82b.pdf