Effect of Aqueous Amino Acid Extracts on the Developmental Period of Immature Stages of Culex quinquefasciatus (Diptera: Culicidae) in Laboratory Bioassay

2013 ◽  
Author(s):  
Utpal Adhikari ◽  
Anupam Ghosh ◽  
Goutam Chandra
Keyword(s):  
Amino Acid ◽  
Culex Quinquefasciatus ◽  
Developmental Period ◽  
Immature Stages ◽  
Laboratory Bioassay

scholarly journals A solitary mud-daubing wasp, Brachymenes dyscherus (Hymenoptera: Vespidae) fron Brazil with evidence of a life-cyde polyphenism

2015 ◽  
pp. 949-958
Author(s):  
Evandro Camillo
Keyword(s):  
Life Cycle ◽  
Sex Ratio ◽  
Life Table ◽  
Total Population ◽  
Total Duration ◽  
Sao Paulo ◽  
Developmental Period ◽  
Immature Stages ◽  
São Paulo ◽  
Interior Walls

Nests ( n=60 ) of a solitary mud-daubing wasp, Brachymenes dyscherus were conected at Fazenda Santa Carlota, Cajuru, Sao Paulo, Brazil ín 1995 and 1996 . The multi-celled mud nests were constructed on the interior walls of abandoned houses in dry and shaded places. Nests were composed of 1 to 4 layers with cens constructed in two paralle! series. The number of cens per nest ranged from 3 to 62. Cells containing prey (larvae of Lepidoptera) numbered fram 4 to 29. B. dyscherus is a uniyoltíne species. Adults emerge from September to December, and nesting talces place at the beginning of the following year; however, the developmental period for some immatures with proloFlged diapause l3.Sted up to 596 days. The total duration of immature stages n nests collected in 1996 was less for males than for females. The sex ratio for the total populatíon was 1 . 5 males: 1 female with males emerging earher than females. A life table was constructed, and details of lhe life cycle of the wasps and parasitoids are presented. The mos! common mOl1ality factors were either endogenous or due 10 Melittobia sp. (Eulophidae) .

scholarly journals Biology of Gram Blue Butterfly, Euchrysops Cnejus (Fabricius) (Lycaenidae: Lapidoptera) and its Relationship with the Phenology of Host-plant (Vigna Unguiculata: Fabaceae)

2015 ◽  
Vol 39 (2) ◽  
pp. 241-248 ◽  
Author(s):  
Sajeda Akand ◽  
MA Bashar ◽  
Humayun Reza Khan
Keyword(s):  
Host Plant ◽  
Laboratory Condition ◽  
Incubation Period ◽  
Vigna Unguiculata ◽  
Developmental Period ◽  
Oviposition Behaviour ◽  
Immature Stages ◽  
Pupal Period ◽  
Academy Of Sciences ◽  
Blue Butterfly

The biology of the gram blue butterfly, Euchrysops cnejus (Fabricius) (Lycaenidae: Lapidoptera) and its relationship with the phenology of host plant cowpea, Vigna unguiculata L. (Fabaceae) were studied. Eggs were reared under the laboratory conditions at 28 ± 20C and 74 ± 3% RH. The incubation period of the eggs found to be 2.33 ± 0.51 days, larval developmental period 14.65 ± 0.51 days, pre-pupal period 0.30 ± 0.04 day and pupal period 5.66 ± 0.51 days. The species took 22.94 ± 0.55 days for development from egg to adult under the laboratory condition. The length of 1st, 2nd, 3rd and 4th instar larvae was 3.66 ± 0.40, 6.16 ± 0.51, 12.16 ± 0.51 and 15.33 ± 0.40 mm, respectively. The pre-pupal length was 9.16 ± 0.61 mm and the pupal length was 9.08 ± 0.37 mm. The host-plant occurs in the field from February to July. The butterfly appeared in March. The coincidence of the gram blue butterfly to its host-plant occurred between April and early July. The oviposition behaviour, incubation and immature stages were found to be profoundly related with host plant-phenological phases.Journal of Bangladesh Academy of Sciences, Vol. 39, No. 2, 241-248, 2015

scholarly journals Toxicity of Boswellia dalzielii (Burseraceae) Leaf Fractions against Immature Stages of Anopheles gambiae (Giles) and Culex quinquefasciatus (Say) (Diptera: Culicidae)

2016 ◽  
Vol 8 ◽  
pp. IJIS.S37188 ◽  
Author(s):  
Lame Younoussa ◽  
Elias Nchiwan Nukenine ◽  
Charles Okechukwu Esimone
Keyword(s):  
Anopheles Gambiae ◽  
Culex Quinquefasciatus ◽  
Leaf Extract ◽  
Mosquito Control ◽  
Hexane Fraction ◽  
Immature Stages ◽  
Human Pathogens ◽  
Breeding Sites ◽  
Plant Products ◽  
Anopheles Gambiae Giles

Mosquitoes are vectors of several human pathogens, and great attention has recently been placed on insecticides from plant-derived products, in search for mosquito control agents. This study, thus, investigated the potency of Boswellia dalzielii methanol leaf extract and its four fractions as mosquito ovicide, larvicide, and pupicide against Anopheles gambiae and Culex quinquefasciatus. The plant products were tested at the following concentrations: 125, 250, 500, 1000, and 2000 ppm on eggs and 312.5, 625, 1250, and 2500 ppm on the larvae and pupae of the mosquitoes. For results, hatchability of A. gambiae eggs was reduced to 5% with n-hexane fraction at 2000 ppm. Among the plant products tested, n-hexane fraction was most toxic against A. gambiae (LC50 = 385.9 ppm) and C. quinquefasciatus (LC50 = 3394.9 ppm). The n-hexane fraction of B. dalzielii might be used as a mosquitocidal agent in the breeding sites of A. gambiae and C. quinquefasciatus.

IMMATURE STAGES AND BIOLOGY OF ZELUS SOCIUS (HEMIPTERA: REDUVIIDAE)

1973 ◽  
Vol 105 (2) ◽  
pp. 231-238 ◽  
Author(s):  
Stephen O. Swadener ◽  
Thomas R. Yonke
Keyword(s):  
Developmental Period ◽  
Immature Stages ◽  
Mean Values ◽  
Nymphal Development ◽  
The Mean

AbstractThe egg and five nymphal instars of Zelus socius Uhler are described and illustrated. The eggs are elongate-oval, 1.39 mm high and 0.53 mm in diameter (mean values). The mean lengths of nymphs are 2.45, 3.47, 5.64, 7.56, and 10.49 mm in the five stages, respectively. The developmental period for eggs averaged 9.0 days and the nymphal development averaged 52.6 days. There is one generation a year.

Sign in / Sign up

Export Citation Format

Share Document