Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 172 for “"INSTAR"”.
-
Molecular Characterization of Hemoglobin Protein in Larvae of 4th Instar Chironomidae for Evaluating Environmental Quality
… with upper bands similar to early 4<sup>th</sup> instar larvae and a loss of lower bands. Cd’s mechanism of action was investigated by measuring endpoints associated with Hb biosynthesis pathways. Endpoints included porphobilinogen (PBG) synthase activity and expressions of genes: hemoglobin IV …
-
Species composition and larval instar population structure of Scarabaeids in forestry in the Natal Midlands
… width pattern was used to determine the larval instars responsible for the damage. High incidences of seedling damage was recorded from December to April. Several morphospecies were found I damaging seedlings simultaneously. Morphospecies 1, 2, 3, 4, 5 and 6 were responsible for the damage but …
-
Efektifitas estrak etanol rimpang alang-alang (mperta cylinca) sebagai larvasida nyamuk (Aedes aegypti L) instar III
… terhadap mortalitas larva nyamuk Aedes aegypti instar III. 2.) untuk mengetahui nilai LC50 ekstrak rimpang alang (Imperata cylindrica). Penelitian ini merupakan penelitian laboratoris yang dilakukan dengan RAL (Rancangan Acak Lengkap). Perlakuan yang diberikan pada larva nyamuk adalah ekstrak …
-
Early Instar Growth and Survivorship in the Common Baskettail Dragonfly <em>Epitheca cynosura</em> (Anisoptera: Corduliidae).
… across treatments. Due to poor recovery of early-instar larvae, survivorship showed no significant differences in mortality among treatments. The predator present treatment caused significantly smaller head widths and dry masses only on days 42 and 55. The density treatment had a significant …
-
Culture-independent identification of gut bacteria in fourth-instar red imported fire ant, Solenopsis invicta Buren, larvae
… agricultural pests from South America. Fourth-instar larvae are used by the colony to digest solid food and then regurgitate it for consumption by workers and queens. Larvae are an ideal source of investigations of obligate endosymbiotic bacteria possibly involved in nutrient distributions. I …
-
A Taxonomic Study of First Instar Larvae of the Vittata, Corvina and Maculata Groups of the Genus Epicauta (Coleoptera, Meloidae)
Made available in DSpace on 2014-12-14T07:04:02Z (GMT). No. of bitstreams: 1 7811202.pdf: 7124618 bytes, checksum: 1e87a1f7ae6ed481032ed1f9fdb24107 (MD5) Previous issue date: 1978
-
Ceuthorrhynchidius horridus panzer (Coleoptera: curculionidae) -- the host specificity of the first instar, notes on the insect's biology, and methods of adult aestival diapause termination
… of its host specificity and biology. First instar host specificity tests on 36 species of economically and aesthetically important plants revealed an approximate host range among some species based on development to only the third instar. Field host range information disclosed that this …
-
Kajian aspek biologi dan daya mangsa Harmonia axyridis pallas terhadap kutu daun Myzus persicae Sulz pada tanaman jeruk
… selama satu siklus hidup. Dimulai dari larva instar I sampai imago. Kemampuan H. axyridis dalam memangsa kutu daun M. persicae belum banyak diketahui. Penelitian dilakukan di Rumah kasa dan Laboratorium Entomologi Balai Penelitian Tanaman Jeruk dan Buah Sub Tropika, (BALITJESTRO) pada bulan …
-
Selective feeding on green bean Phaseolus vulgaris by Heliothis zea
First and early second instar Heliothis zea larvae, feeding on the green bean Phaseolus vulgaris, fed preferentially on the leaf. The leaf feeding tendency decreased after about 12 h in the second instar. Third, fourth and fifth instar larvae fed preferentially on bean pod. Leaf-fed last instar …
-
Control Design for an Inertially Stabilized Rifle
… stabilization system for small arms weapons. The INSTAR system is an innovative active stabilization system designed to decouple the shooter's disturbance effects from the barrel movement. The INSTAR system uses an piezoelectric actuator separating the barrel of the rifle from its stock to …
-
Bionomics of Aphidecta obliterata (L.) (Coleoptera: Coccinellidae), a predator introduced for control of the balsam wooly aphid on Mt. Mitchell, North Carolina
… in each stage was as follows: egg, 7.613 first instar, 6.17; second instar, 5.31; third instar, 6.83; fourth instar, 9.50; prepupa, 4.08; and pupa, 13.08. Ninety~three per cent of the adults was identified correctly to sex by using head marking differences only. A distinct correlation was found …
-
Developmental and reproductive ecology of Melanoplus femurrubrum (De Geer) and some other melanopline grasshoppers (Orthoptera, Acrididae)
… in Virginia had five, six, seven, and eight instars, determined by antennal segment counts. Adults with five instars were uncommon, and six and seven-instar adults were the most abundant morphs. Laboratory studies showed that decreasing temperature decreased both the number of instars, and …
-
Determination of mechanism of zinc resistance in Chironomus riparius: a physiological/energetic approach
… of growth and respiration experiments using instar III and IV Chironomus riparius under the influence of 0.0, 62.5, 125, 250, and 500 ppb zinc. Main comparisons were made between larvae that were cultured in clean water conditions and larvae from cultures that had been exposed to 10 ppb zinc …
-
Biology and control of the lesser mealworm: Alphitobius diaperinus, a structural pest in poultry houses
Late instar larval Alphitobius diaperinus initiated tunneling damage to polystyrene insulation in search of protected pupation sites. Adult females oviposited upon the surface of the styrofoam but early instar larvae left the styrofoam soon after hatching. Within twenty days, large numbers of …
-
Host-parasite interactions between the cysticercoid larvae of the cestode Microsomacanthus hopkinsi and the amphipod intermediate host Hyalella azteca
… short-term survival in amphipods exposed during Instars 1, 2, 3, 4, 6, 8 and 9. Oncosphere consumption, short-term survival, and intensity of infection were generally similar among older amphipods. No correlation was found between oncosphere consumption and cysticercoid levels in any instar. …
-
Bio-ecological studies of Tuta absoluta in Sudan
… B. nigricans strongly accepted fourth instar T. absoluta larvae for oviposition followed by the third instar larvae in laboratory experiments. Fourth instar larvae also yielded a higher number of parasitoid offspring compared to third instar larvae. The performance of D. appellator in …
-
Mono-Oxygenase Activity and Nutritional Ecology of Larvae of the Gypsy Moth, Lymantria Dispar
… oak species are favored by all larval instars; pine may serve as an alternate host for older instar larvae, but first instar larvae suffer 100% mortality on pine (Barbosa et al., 1986). Since pine contains high concentrations of potentially toxic terpenoids, we hypothesized that older …
-
Biology and biocontrol potential of Taphrocerus schaefferi Nicolay and Weiss (Coleoptera, Buprestidae), a leaf miner attacking yellow nutsedge (Cyperus esculentus L.)
… period of 16 days. There are three larval instars, the first two of which consume only the chlorenchyma and upper epidermal cells of the infested leaf. The third instar is responsible for most of the tissue destruction. Approximately one half of the vascular bundles are destroyed. Larvae …
-
Life history, survival, growth, and production of hydropsyche slossonae in Mill Creek, Virginia
… and June which hatched in 13 days. Five larval instars were recorded with most individuals overwintering in III and IV instars. Pupation and emergence occurred primarily over a six week period in May and June. No mortality in the egg stage (0%) was detected, while high mortality in I instar …
Page 1 of 9