eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
1
12
10.21608/eajbsa.2011.15167
15167
Original Article
Population dynamics of the purple scale, Lepidosaphes beckii (Hemiptera: Diaspididae) and its parasitoid Aphytis lepidosaphes (Hymenoptera: Aphelinidae) as a new threat pest on mango trees in Egypt
Nadia Aly
1
Plant Protection Research Institute, Agriculture Research Center, Dokki, Giza, Egypt
The purple scale, Lepidosaphes beckii (Newman) (Hemiptera: Diaspididae)is one of the most important pests attacking mango. The present paper includes population dynamicsof the purple scale, L. beckii and its parasitoid. Dynamics of L. beckii and its parasitoidon mango trees was carried out in Giza, governorate, during 2009 and 2010.Only one parasitoid recorded in this workwas Aphytis lepidosaphes Compere (Hymenoptera: Aphelinidae). Statistical analysis of the effect of weather factors on the population of L. beckii andits parasitoid during the two years under consideration was explained. The results indicated that maximum and minimum temperatures was significant on the population of L. beckii and its parasitoid, A. lepidosaphes while percent of relativehumidity it is nonsignificant. As well as obtained results over both years indicated the occurrence of three generations per year for L. beckii on mango in Giza.
https://eajbsa.journals.ekb.eg/article_15167_6928b70139e3a455457c3716ffec940b.pdf
Population dynamics
Lepidosaphes beckii
Aphytis lepidosaphes
mango trees
Egypt
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
13
19
10.21608/eajbsa.2011.15168
15168
Original Article
Does the HMF value affect the Antibacterial activity of the Bee Honey?
Emad Nafea
1
Walaa Moselhy
2
Asmaa, Fawzy
3
Department of Apiculture, Plant Protection Research Institute, Agriculture Research Center, Dokki, Giza, Egypt
Faculty of Science, Zoology Department, Al-Azhar University (Girls)
Department of Apiculture, Plant Protection Research Institute, Agriculture Research Center, Dokki, Giza, Egypt
This study evaluated the antimicrobial activity of different levels of HMF value of honey at different concentration (15,20and 25%honey). Honey and HMF concentrations of 15 %, 20 % and 25 % honey in distilled water were prepared. These preparations were tested for antimicrobial activity against four different types of pathogenic bacteria; Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus and Bacillus subtilis . Antimicrobial activity was determined as an equivalent of the inhibition zones diameters using filter paper discs (in millimeters) after incubation of the cultures at 30°C for 24 hours for bacterial species. The results showed a bactericidal activity of HMF value of honey against a broad spectrum of bacteria with variable degrees. By use of least significant differences test for multiple comparisons, it is apparent that the honey of HMF value (90.24 mglkg) showed the highest inhibitory effect on bacterial growth compared to other honey treatments and HMF concentrations. This value (90.24 mglkg) had the highest bactericidal activity against Escherichia coli at concentrations of 15and 20% honey. Similarly, the HMF (90.24 mglkg) value had significantly higher inhibitory effects compared to other treatments on Bacillus subtilis growth at concentration 15, 20 and 25% honey and on Staphylococcus aureus growth at concentration 15and 25% honey. However, there was no inhibitory effect of HMF value of honey (203.0 mglkg) against all bacterial strains tested at concentration 15% honey. Considerably, no inhibitory effect of all HMF values of honey treatments was noted on Pseudomonas aeruginosa. Conclusion, the different levels of HMF value of honey at different concentration (15,20and 25%) showed a bactericidal activity against a broad spectrum of bacteria with variable degrees
https://eajbsa.journals.ekb.eg/article_15168_927db6e89076b4a21b8ffc8e5aaf9a03.pdf
Antibacterial
bee honey
HMF value
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
21
31
10.21608/eajbsa.2011.15169
15169
Original Article
Geometric Morphometric Analysis of the Head, Pronotum and Genitalia of the Rice Black Bug Associated with Selected Rice Types
Lessie Cruz
1
Mark Torres
2
Alberto Barrion
3
Ravindra Joshi
4
Leocadio Sebastian
5
Cesar Demayo
cgdemayo@gmail.com
6
Department of Biological Sciences, College of Science and Mathematics MSU-Iligan Institute of Technology, Iligan City, Philippines
Department of Biological Sciences, College of Science and Mathematics MSU-Iligan Institute of Technology, Iligan City, Philippines
Philippine Rice Research Institute, Science City of Munoz, Nueva Ecija, Philippines
Philippine Rice Research Institute, Science City of Munoz, Nueva Ecija, Philippines
Philippine Rice Research Institute, Science City of Munoz, Nueva Ecija, Philippines
Department of Biological Sciences, College of Science and Mathematics MSU-Iligan Institute of Technology, Iligan City, Philippines
The Rice blackbug, Scotinophora coarctata (Fabricius, 1798) is one of the major rice pests causing high yield loss in terms of rice production in the Philippines. Resistant varieties developed to reduce yield has never been successful as there are populations of the pest that are able to survive and utilize the different rice types. It was argued that population differentiation occurs in deployed rice varieties thus this study was conducted. Landmark - based and outline morphometric analysis and correlation analysis based on distances (CORIANDIS) were used to compare the shape and sizes of the head, pronotum, abdominal segment, genital plate and scutellum of rice black bug individuals associated with rice host varieties. Results of the analysis showed that RBB populations differ in the shapes and sizes of the scutellum indicating a significant rice host associated shape differences. It can be concluded from this study that rice types or genotypes affect population structures of the pest.
https://eajbsa.journals.ekb.eg/article_15169_b26a3c215f2b2bb1a7f6adad0280a3ff.pdf
Geometric Morphometric Analysis
Pronotum
genitalia
Rice Black Bug
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
33
48
10.21608/eajbsa.2011.15170
15170
Original Article
Evaluation of the biological activity of some Cupressus semprevirens (Cupressaceae) extracts against the mosquito vector Culex pipiens L. (Diptera: Culicidae)
Tarek El-Sheikh
tarek_elshekh2000@yahoo.com
1
Mostafa Hassan
2
Walaa Moselhy
3
Mouneer Amer
4
Ahmed Shehata
5
Department of Biology, faculty of Science, Jazan University, Jazan, Saudi Arabia.
Department of Biology, faculty of Science, Jazan University, Jazan, Saudi Arabia.
Department of Zoology, Faculty of Science(girls), Al-Azhar University, Nasr City, Cairo, Egypt
Department of Zoology, Faculty of Science (boys), Al-Azhar University, Nasr City, Cairo, Egypt
Department of Zoology, Faculty of Science (boys), Al-Azhar University, Nasr City, Cairo, Egypt
Ethanolic, acetone and petroleum ether extracts of leaves from the Egyptian plant Cupressus sempervirens (Cupressaceae) were tested against 3rd instar larvae of the mosquito Culex pipiens L. The obtained results indicated that petroleum ether extracts were more efficient than ethanolic and acetone extracts. The toxicity, based on Lc50 values, are arranged in a descending order as follows: ethanolic (Lc50 263.6ppm) > acetone extract (Lc50 104.3ppm) > petroleum ether extracts (Lc50 37.8 ppm). As shown by the present results, a remarkable reduction in both the pupation percent and adult emergence was obtained. Moreover, all plant extracts exerted a delayed toxic effect on the pupae and adults after treatment of larvae. Also, various degrees of morphogenic abnormalities were observed in the immature and adult stages. Thus, these results may provide an opportunity to develop alternatives to costly organic pesticides and environmentally hazardous chemicals with some available cheap plants which are uaually environmentally safe to different living organisms.
https://eajbsa.journals.ekb.eg/article_15170_4770f3966d2b88169b101f0bf277f7de.pdf
ethanolic extract
Acetone extract
Petroleum ether extract
toxicity
Cupressus sempervirens
Culex pipiens
Growth
mortality
pupation
emergence
Malformation
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
49
58
10.21608/eajbsa.2011.15171
15171
Original Article
Role of pteromalid parasitoid Scutellista caerulea (Fonscolombe) (Hymenoptera: Pteromalidae) for biological control of the soft scale insects (Hemiptera: Coccidae) in Egypt
Hoda Badary
1
Shaaban Abd-Rabou
2
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza
The pteromalidparasitoid, Scutellista caerulea (Fonscolombe) (Hymenoptera: Pteromalidae) is one of the most effective parasitoid associated with soft scale insects. This work dealt with the biological role of this parasitoid during 2009 and 2010 in Egypt. The results indicated that the parasitoid, S. caerulea was emerged from 8 species of soft scale insects. The host soft scale insects were Ceroplastes floridensis Comstock, Ceroplastes rusci (L.), Coccus hesperidum L., Kilifia acuminata (Signoret), Parasaissetia nigra (Nietner), Saissetia coffee (Walker), Saissetia oleae (Olivier) and Waxiella mimosae (Signoret) (Hemiptera: Coccidae). Population abundance studies of S. caerulea were carried out on the aforementioned soft scale insects in eight locations in Egypt, being Beni Seuf, Gharbiya, Giza, Ismailia, Marsa Matruh, Northern Coast, Qena and Sharqiya. The highest rate of parasitism attained with S. oleae was found to be 38.2 and 40.9 % during the first and second years, respectively. While average parasitism rates was 21.3 and 23.5 % during the two years under consideration, respectively. The results indicated that S. caerulea was the effective parasitoid attacking some soft scale insects in Egypt.
https://eajbsa.journals.ekb.eg/article_15171_055abb35decc89fac881ea8428fa8c70.pdf
: Pteromalidae
Scutellista caerulea
Coccidae
soft scale insect and distribution
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
59
74
10.21608/eajbsa.2011.15172
15172
Original Article
Seasonal incidence of scale insects, whiteflies and psyllids (Hemiptera) of olive and their natural enemies in Egypt
Shaaban Abd-Raboou
1
Noha Ahmed
2
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt.
Scale insects, whiteflies and psyllids (Hemiptera) are the main olive pests in Egypt. The aim of this work is to study the incidence ofscale insects, whiteflies and psyllids and their natural enemies on olive treesin different locations in Egyptduring 2009-2010. The results of the present work indicated that the seasonalabundance of Lucaspis riccae Targioni-Tozzetti (Hemiptera: Diaspididae) on olive trees reached maximum duringNovember and February in first and secondyears, respectively. Percent parasitism by Aphytis libanicus Traboulsi (Hymenoptera:Aphelinidae) reached maximum duringDecember with percent parasitism 11.1 and 12.2 %, during the two years under considerations,respectively. The insect population of Parlatoriaoleae Leonardi (Hemiptera:Diaspididae)reached maximum during October, 2009-2010.Percent parasitism by Aphytis lingnanensis Compere (Hymenoptera:Aphelinidae) and Habrolepis aspidioti Compere and Annecke (Hymenoptera: Encyrtidae) reachedmaximum during December and November with percent parasitism 6.5 and 12.5 in the first year,respectively and in November in the secondyear with percent parasitism 6.9and 14.2 %, respectively. The predator Chilocorus bipustulatus L.(Coleoptera: Coccinellidae) reached maximum during February and March in thefirst and second years, respectively. In this work the abundance of Saissetiacoffeae (Walker)(Hemiptera: Coccidae) reached maximumduring October in the first and second years. Percent parasitism by Metaphycus flavus(Howard) (Hymenoptera: Encyrtidae) reached maximum during October and September with parasitism rates 11.5 and 13.5 % during the first and secondyears, respectively. The predator Scymnus syriacus (Marseul)(Coleoptera: Coccinellidae) reached maximum during October in the first and second years. The populations of Saissetiaoleae (Bernard) (Hemiptera: Coccidae) reachedmaximum during October in the firstand second years. Percent parasitism of Metaphycus lounsburyi (Howard)(Hymenoptera: Encyrtidae) reached maximum duringOctober during the first and second years, with percent parasitism 34.2.1and 40.1 %respectively. The predator Exochomus flavipes (Thunberg) (Coleoptera:Coccinellidae) reached maximum during Octoberin the first and second years. The seasonal abundance of Aleurolobusolivinus Silvestri (Hemiptera: Aleyrodidae) reached maximum during April in first and second years.Percent parasitism by Encarsiaolivina (Masi) (Hymenoptera: Aphelinidae) reached maximum during April duringthe first and second years withpercent parasitism 0.6 and 0.5, respectively. The abundance of Siphoninus phillyreae(Haliday) (Hemiptera: Aleyrodidae) reached maximum during October in first and second years, respectively. Percentparasitism by Encarsia inaron(Walker),(Hymenoptera: Aphelinidae) reached maximum duringOctober in first and second years with percent parasitism 1.8 and 2.9%,respectively. The results of the present study indicated that the seasonalabundance of Euphyllura straminae Loginova (Hemiptera: Psyllidae) reachedmaximum during March in the firstand second years. The predator Orius sp. reached maximum during March in the first and second years.
https://eajbsa.journals.ekb.eg/article_15172_19ab98a5714bcd3416c5c5060e491c32.pdf
seasonal incidence
scale insects
whiteflies
Egypt
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
75
90
10.21608/eajbsa.2011.15173
15173
Original Article
Natural enemies of the latania scale, Hemiberlesia lataniae (Hemiptera: Diaspididae) in Egypt
Mona Moustafa
1
Shaaban Abd-Rabou
2
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
The latania scale, Hemiberlesialataniae (Signoret) (Hemiptera: Diaspididae) is a dangerous pest in different locations in Egypt.During the present work, 17 species of natural enemies were collected fromsamples of H. latania. These are: Aphytis aonidiae (Mercet), Aphytischilensis Howard, Aphytis lingnanensis Comepre, Aphytis mytilaspidis (Le Baron) (Hymenoptera:Aphelinidae), Chilocorus bipustulatus L. (Coleoptera: Coccinellidae), Chrysoperllacarnae Steph. (Neuroptera:Chrysopidae), Coccinella undecimpunctata L (Coleoptera: Coccinellidae), Encarsia aurantii (Howard), Encarsia lounsburyi (Berlese and Paoli) (Hymenoptera:Aphelinidae), Exochomus flavipes Thunb. (Coleoptera: Coccinellidae)and Habrolepis aspidioti Compere andAnnecke (Hymenoptera: Encyrtidae), Marietta leopardina Motschulsky (Hymenoptera: Aphelinidae), Orius laevigatus Fieb. (Hemiptera:Anthocoridae), Pharoscymnus various Kirsch., Rodalia cardinals Muls (Coleoptera: Coccinellidae), Scymnus syriacus Mars. (Coleoptera: Coccinellidae) and Syrphus corollae Fabricius(Diptera: Syrphidae). Abundance of the latania scale, H. lataniae naturalenemies were evaluated in different locations in Egypt, representing variousbioclimatic regions during two successive years 2009-2010. The results indicated that the parasitoid, H.aspidioti the most abundant species associated with H. lataniae infested mango trees in Giza. The maximum rate of parasitism reached9.1 and 7.3% in October, 2009 and 2010, respectively. The percentage ofparasitism ranged from 0.1 to 9.1% in the first year and from 0.3 to 7.3% inthe second year. The predator C.carnae was the most abundant species and occurred allover the years under investigation on H. lataniae on olive trees inAlexandria and themaximum number was 25 individuals /60 leaves and 15 twigs in July in the firstyear and 17 individuals/60 leaves and 15 twigs in June in the second year. Keys for parasitoids and predatorsassociatedwith the latania scale, H. lataniae are included.
https://eajbsa.journals.ekb.eg/article_15173_f7c15b55c2d3ab59750c3cd36a56a0b7.pdf
Population dynamics
armored scale insects
Hemiberlesia lataniae
parasitoids and predators
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
91
101
10.21608/eajbsa.2011.15174
15174
Original Article
Study the prey preference of some aquatic insects for different snails under the laboratory conditions
Mohamed Aly
1
Ibrahim .Mohamed
2
Shadia Bakry
3
Zoology Department (Entomology), Faculty of Science (Qena), South Valley University
Zoology Department (Entomology), Faculty of Science (Qena), South Valley University
Zoology Department (Entomology), Faculty of Science (Qena), South Valley University
The study of five aquatic insects (predators),adults of two hemipterous species, Limnogetonfieberi Mayr, Sphaerodemaurinator Duf., and nymphs of three Odonatous species, Anax imperator Leach,Crocothemis erythraea Brulle and Ischnura pumilio Charp. onfourspecies of snails (preys) exist in its natural habitat at Qena, Bulinustruncates Audouin, Biomphalariaalexandrina Ehrenb, Cleopatra bulimoides Olivierand Melanoides tuberculata Muller. in non choice experiment under laboratory conditions,the result indicated that the first preference for attack to all predators was directed towards B. truncates.And the last preference was B. alexandrina. Except, L.fieberi,the last preference was C. bulimoides.
https://eajbsa.journals.ekb.eg/article_15174_2a756d88fc92b79eb2823a6f67b9055c.pdf
: aquatic insects
snails
predation
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
103
113
10.21608/eajbsa.2011.15175
15175
Original Article
The insecticidal activity of actinomycete metabolites, against the mosquitoe Culex pipiens.
El-Khawagh A.
1
Hamadah Sh.
2
El-Sheikh M.
3
Botany and Microbiology Department, Faculty of Science (Girls) Al-Azhar Univ. Cairo- Egypt
Zoology and Entomology Department, Faculty of Science Al-Azhar Univ., Cairo- Egypt.
Zoology and Entomology Department, Faculty of Science Al-Azhar Univ., Cairo- Egypt.
Twenty seven actionmycetes were isolated from desert soil of different Egyptian sites and tested for production of insecticidal agents against the 3rd instar larvae of mosquitoes Culex pipiens. The obtained data exhibited that the isolate metabolites have a lethal effects. Metabolites of seven isolates cause 100 % total mortality. These isolates were identified as Streptomyces fungicidicus, Streptomyces griseus, Streptomyces albus, Streptomyces rochei, Streptomyces violaceus, Streptomyces alboflavus and Streptomyces griseofuscus. However, some isolate metabolites exhibited its insecticidal effect on the development of larvae. In addition, some pupal deformities (pupal-adult intermediate) were recorded by isolates no. A7, A8, A13, A24 & A26.
https://eajbsa.journals.ekb.eg/article_15175_51ac770f417b3585ea264a9a3df3726b.pdf
Culex pipiens
Actinomycetes
mortalities
Development
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
115
122
10.21608/eajbsa.2011.15176
15176
Original Article
Heat Unit Requirements for Development of the Pink Bollworm Pectinophora gossypiella (Saund.)
Yones S.
monayones@yahoo.com
1
Abd ElRahman A.
2
Abou Hadid F.
3
Arafat M.
4
Dahi F.
5
National Authority for Remote sensing and Space Sciences (NARSS), 23, Josef proztito St. Elnozha Elgedida - P.O. Box 1564 Alf maskan Cairo, Egypt
Faculty of Science, Ain Shams University, Egypt
Minstry of Agriculture, Egypt
National Authority for Remote sensing and Space Sciences (NARSS), 23, Josef proztito St. Elnozha Elgedida - P.O. Box 1564 Alf maskan Cairo, Egypt
Plant Protection Research Institute, Giza, Egypt
The present study was carried out under fourconstant temperatures (20, 25, 30 and 35°C each ± 1°C) when the Pink Bollworm, Pectinophoragossypiella (Saund.) larvae,were fed on artificial diet. The timerequired for embryogensis, larval duration and pupal duration decreased as thetemperatures increased from 20 to 35°C. The lower thresholds of development (t0)were 9.91, 14.07, 9.57 and 12.18°C for eggs, larvae, pupae and pre-ovipositionperiod, respectively. The average accumulated heat units required fordevelopment was 72.11, 166.38, 248.70 and 26.83degree-days for egg, larvae,pupae and pre-oviposition period, respectively. The lower threshold ofdevelopment (t0) to complete a generation was 12.03°C. The averageaccumulated heat units required for a generation was 499.71 degree-days. Thekind of food had non-significant effect for heat requirements. The thermalunits required to complete the development of different stages to complete onegeneration, as well as helping in the design of development indexes,determining the times required for these stages under fluctuating temperaturesin field and forecasting system for establishment and develop the non chemicalmethods for the pink bollworm IPM program.
https://eajbsa.journals.ekb.eg/article_15176_a8fbd498f57dcc2c861e61bb0c10c367.pdf
Heat Unit
pink bollworm
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
123
130
10.21608/eajbsa.2011.15177
15177
Original Article
Studies on the population fluctuations and distribution of the white mango scale insect, Aulacaspis tubercularis Newstead within the canopy of the mango trees in eastern of Delta region at the north of Egypt
Mostafa El-Metwally
1
S. Moussa
2
Nabil Ghanim
3
Plant Protection Research Institute, Agricultural Research Center
Plant Protection Research Institute, Agricultural Research Center
Plant Protection Research Institute, Agricultural Research Center
Population fluctuations of the white mango scale insect, Aulacaspis tubercularis, Newstead, (Coccoidea: Diaspididae) had been studied in mango orchards located at two governorates, (Damietta and Gharbya) in the northern of Egyp during 2010. The obtained data revealed that A. tubercularis recorded three peaks at Damietta governorate; these peaks were recorded during February, June and August 2010 when 35.5, 39.1 and 127.1 individuals/leaf were recorded, respectively. At Gharbyia governorate two peaks during April 2010, (48.9 individuals/leaf) and July 2010, (32.6 individuals/leaf).The variables of temperature and relative humidity had slight effects on A. tubercularis population. On the other hand, A. tubercularis preferred south direction than the other cardinal directions (north, east and west) and center of mango tree canopy. Also, this pest preferred the upper surface of leaves during cold month (winter months) and preferred the lower surface of leaves during the hot months (summer months). The sex ratio had been recorded as 34.6:1 (male: females) at Damietta district, while, at Gharbayia governorate, it had been recorded as 20.5:1.
https://eajbsa.journals.ekb.eg/article_15177_d827d54326f879c89b71a5ffad18cf99.pdf
Aulacaspis tubercularis
Population fluctuations
Distribution
sex ratio
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
131
144
10.21608/eajbsa.2011.15178
15178
Original Article
The relationship between some insect predators and aphid insects in Qena Governorate
Mohamed Aly
1
Khaled Osman
2
Ibrahim Mohamed
3
Nahla Wahballah
4
Zoology Department Entomology, Faculty of Science (Qena), South Valley University
Zoology Department Entomology, Faculty of Science (Qena), South Valley University
Zoology Department Entomology, Faculty of Science (Qena), South Valley University
Zoology Department Entomology, Faculty of Science (Qena), South Valley University
The sweep net was used for studying the relationship between predators (Hippodamia convergens Guer.and Chrysopa carnea Stephens) and preys (Aphis faba Scopoli, Aphis gossypii Gloverand Myzus persicae Sulzer). Regular samples were collected weekly from Alfalfa at the two stations (A & B) in the two trapping years (March 2007- February 2009).
The seasonal distributions showed that Hippodamia convergens Guer.,Chrysopa carnea Steph., Aphis faba Scopoli, Aphis gossypii Gloverand Myzus persicae Sulzer had three generations per year. The relationship between the activity of predators (H. convergens, C. carnea)and preys (A. faba, A. gossypii, M. persicae) explained that the more increasing in the predators the more decreasing in the population of the preys.
https://eajbsa.journals.ekb.eg/article_15178_60262416ae4df3e2c683e4bb210bd08f.pdf
predation
aphids
Insect predators
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
145
148
10.21608/eajbsa.2011.15179
15179
Original Article
Description of a new species of the genus Coccygidium de Saussure,1982 (Hymenoptera: Braconidae: Agathidinae) from Saudi Arabia.
Hamed Ghramh
1
Department of Biology, Faculty of Science, King Khalid University, P.O.Box- 9004, ABHA- 61413. Kingdom of Saudi Arabia.
Coccygidium hebabi sp. nov., (Hymenoptera, Braconidae, Agathidinae) is described from Saudi Arabia. Morphological diagnostic characters of the new species were figured and compared with those of the related species Coccygidium arabica Ghramh, 2011.
https://eajbsa.journals.ekb.eg/article_15179_de72e4244bf8f78c04dbc70bdcd0fcef.pdf
Coccygidium hebabi sp. nov
Coccygidium arabica Garamah
new species, Saudi Arabia, Hymenoptera, Braconidae, Agathidinae
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
149
161
10.21608/eajbsa.2011.15180
15180
Original Article
Anomalies and asymmetry of wing venation pattern in Carniolan and Egyptian bee populations in Egypt
Adel Mazeed
adelmazeed@hotmail.com
1
Faculty of Agriculture, Department of Entomology, Cairo University, Egypt,
The presence of unusual wing venation and asymmetry of the forewing in Carniolan and Egyptian honeybees in Egypt were recorded. The present study indicates that, Carniolan bees had higher rate of unusual veins than the Egyptian bees. The frequency of adventitious veins was much higher than incomplete veins, and the marginal cell had the highest frequency of adventitious veins, and the first cubital cell had the lowest. The adventitious vein of the marginal cell characterized the Egyptian bees, whereas the adventitious vein of the third cubital cell characterized the Carniolan bees population. In the hind wing, the incomplete veins were absent, and only an extension of the medial vein appeared with higher frequency in Egyptian bees than in Carniolan bees. The left and right forewings of Egyptian bees are more homogenous than those of Carniolan bees. All wing coordinates exhibited significant fluctuating asymmetry in Carniolan bees, in comparison to 15 of 31 coordinates in Egyptian bees. With respect to directional asymmetry, 19 and 27 of 31 coordinates showed significant directional asymmetry in Carniolan bees from Manzala and NewValley respectively, but only 13 in Egyptian bees.
https://eajbsa.journals.ekb.eg/article_15180_4043201f302a684a6c40156be264cf0e.pdf
Egyptian bees
Carniolan bees
wing venation
wing cells
anomalies
asymmetry
eng
Egyptian Society of Biological Sciences
Egyptian Academic Journal of Biological Sciences. A, Entomology
1687-8809
2090-0813
2011-06-01
4
1
163
174
10.21608/eajbsa.2011.15181
15181
Original Article
Ecological aspects of Sassetia spp. ( Coccidae: Coccoidae: Hemiptera) and thier natural enemies in Egypt
Hoda Badary
1
Plant Protection Research Institute, Agriculture Research Center, Dokki, Giza, Egypt
In Egypt, Saissetia spp. (Coccidae: Coccoidae: Hemiptera) are the most dangerous soft scale insects infesting fruit trees. The aim of this work is to study the ecological aspects of Saissetia spp.and its natural enemies in Egypt. The result indicated that Genus Saissetia Deplanche comprises here by two species These are the soft brown scale, Saissetia coffeae (Walker) and the Mediterranean black scale, Saissetia oleae (Olvier). Genus Saissetia recorded here associated with 14 parasitoid species and 16 predator species.The seasonal abundance of S. coffeae was studied for two successive years from 2009-2010 on olivetrees in Northern Coast .The obtained results showed that, the insect population reached maximum during mid September (7728 and 8368/ 60 leaves/30 twigs) in first year and second year, respectively. Numbers by parasitoids Metaphycus lounsburyi (Howard), Microterys flavus (Howard) and Scutellista cyanea Motschulsky and a predator Scymnus syriacus Mars., reached maximum (31,9,3, and19 /60 leaves/30 twigs) during September, July, September and August, in the first year, respectively and 20,8,2 and 15 during September in the second year, respectively. The seasonal abundance of S. oleae was studied for two successive years from 2009-2010 on olivetrees in El-Arish. The obtained results showed that, the insect population reached maximum during mid of August (9729/ 60 leaves/30 twigs) in first year and mid of September (6899/ 60 leaves/30 twigs) in the second year. Numbers by the parasitoids, Metaphycus helvolus (Compere), Microterys flavus (Howard) and the predators, Coccinella undecimpunctata L. and Exochomus flavipes Thunb., reached maximum (22,5,8 and 28 /60 leaves/30 twigs) during August, August ,September and August, in the first year, respectively and 24,19,4 and 22 during September in the second year, respectively.
https://eajbsa.journals.ekb.eg/article_15181_e403f1699de1b9ae443169db10961307.pdf
Ecology
Sassetia spp
Coccidae
natural enemies
Egypt