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Articles 1 - 18 of 18
Full-Text Articles in Life Sciences
Control Of Tribolium Castaneum (Herbst) (Coleoptera: Tenebrionidae) With Spinosad Dust Formulation In Different Oilseeds, Adel Khashaveh
Control Of Tribolium Castaneum (Herbst) (Coleoptera: Tenebrionidae) With Spinosad Dust Formulation In Different Oilseeds, Adel Khashaveh
Adel Khashaveh
The insecticidal effect of spinosad dust, a formulation that contains 0.125% spinosad, was evaluated against adults of Tribolium castaneum (Herbst) on 4 commodities: safflower, sunflower, sesame, and canola. Fifty grams of each commodities were treated with 3 doses of the formulation: 100, 200, and 300 ppm, (corresponding to 0.125, 0.25, and 0.375 mg kg–1 a.i., respectively) at 27 °C and 60 ± 5% relative humidity. The mortality of T. castaneum adults was measured after 1, 2, 7, 14, and 21 days of exposure. After the mortality count on day 21, all surviving insects were removed while the samples were kept …
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Patrick C. Enstrom, Carissa A. Schoenick
Behavioral Explanations Underlying The Lack Of Trap Effectiveness For Small-Scale Management Of Japanese Beetles (Coleoptera: Scarabaeidae), Paul V. Switzer, Patrick C. Enstrom, Carissa A. Schoenick
Paul V. Switzer
Traps containing a combination floral and synthetic pheromone lure are used to monitor and manage Japanese beetles, Popillia japonica Newman (Coleoptera: Scarabaeidae). One key factor limiting trap effectiveness for beetle control is the "trap spillover" phenomenon, in which the trap attracts beetles without capturing them, resulting in increased damage to surrounding host plants. We investigated the mechanisms underlying trap spillover by conducting two studies in a soybean field in east central Illinois. In the first study, we set up trap stations for 1 d and compared the sex, size, and egg load (for females) of beetles caught in the traps …
New Models Of Emergence Traps For Endophytic Egg Parasitoids Capture, Rodrigo Souza Santos Rss
New Models Of Emergence Traps For Endophytic Egg Parasitoids Capture, Rodrigo Souza Santos Rss
Rodrigo Souza Santos RSS
For strain selection studies of natural enemies from the field, studies of behavior or even of taxonomy, capture of alive insects are of great importance. One alternative for obtaining adult parasitoids (Hymenoptera) is the use of emergency traps. Therefore, the objective of this work was to propose two models of emergency traps (traps like “box” and “bottle”), for obtaining alive endophytic egg parasitoids. The two models proposed were efficient in the capture of alive parasitoids, however a larger capture of specimens was observed in the “box” trap in relation to the e “bottle”, due to larger folioles storage inside the …
Description Of New Species Of Fidicinoides Boulard & Martinelli (Hemiptera: Cicadidae) From Brazil, Rodrigo Souza Santos Rss
Description Of New Species Of Fidicinoides Boulard & Martinelli (Hemiptera: Cicadidae) From Brazil, Rodrigo Souza Santos Rss
Rodrigo Souza Santos RSS
The examination of entomological collections of cicadas of several Brazilian institutions revealed three undescribed species in the genus Fidicinoides Boulard & Martinelli i.e., F. dolosa sp.n., F. carmenae sp.n. and F. rosabasalae sp.n. They are described and illustrated based on the male genitalia, the right anterior femur and the operculum.
Diversity And Spatial Distribution Of Ground Arthropods In Agroecosystems, Rodrigo Souza Santos Rss
Diversity And Spatial Distribution Of Ground Arthropods In Agroecosystems, Rodrigo Souza Santos Rss
Rodrigo Souza Santos RSS
The knowledge of the diversity and distribution of ground arthropods contributes for the development of sustainable agricultural systems. This work was carried out at the Paulista State University, Jaboticabal campus, State of São Paulo, Brazil, during the period from February to April 2004. The objective was to analyse the community of Carabidae, Staphylinidae, Formicidae e Araneae through faunistic indexes, to determine the spatial distribution and interespecific interactions of predominant species in soybean (Glycine max (L.) Merr.), corn (Zea mays L.) and rubber tree (Hevea brasiliensis Muell. Arg.). The arthropods were sampled by pitfall traps distributed each 10 m in two …
Laboratory Bioefficacy Of Nine Commercial Formulations Of Temephos Against Larvae Of Aedes Aegypti (L.), Aedes Albopictus Skuse And Culex Quinquefasciatus Say, Chen Chee Dhang
Chen Chee Dhang
The bioefficacy of nine commercial formulations of temephos against Aedes agypti, Aedes albopictus and Culex quinquefasciatus larvae were evaluated in the laboratory. WHO larval bioassay with operational dosage of temephos at 1 mg/L was performed. The larval mortality was recorded every 5 minutes until complete mortality was achieved. All formulations of temephos exhibited various toxicity level against Ae. aegypti, Ae. albopictus and Cx. quiquefasciatus. Generally, larvae of Cx. quinquefasciatus was susceptible to all formulations of temephos, followed by Ae. aegypti and Ae. albopictus.
Surveillance Of Aedes Mosquitoes In A University Campus In Kuala Lumpur, Malaysia, Chen Chee Dhang
Surveillance Of Aedes Mosquitoes In A University Campus In Kuala Lumpur, Malaysia, Chen Chee Dhang
Chen Chee Dhang
Ovitrap surveillance was initiated for eight continuous weeks to determine the distribution and abundance of Aedes sp. mosquitoes in the University of Malaya campus, Kuala Lumpur and the impact of meteorological conditions on the Aedes populations. Two study areas within the campus were selected: Varsity Lake and Seventh Residential College. The abundance of Aedes populations in Varsity Lake was indicated by ovitrap index (OI) which ranged from 60.00% - 90.00%. The mean number of larvae per ovitrap, of Aedes albopictus in Varsity Lake ranged from 11.23 +/- 2.42 - 43.80 +/- 6.22. On the other hand, the outdoor OI for …
A New Method For Collecting Clean Stable Fly (Diptera: Muscidae) Pupae Of Known Age., Dennis R. Berkebile, Anthony P. Weinhold, David B. Taylor
A New Method For Collecting Clean Stable Fly (Diptera: Muscidae) Pupae Of Known Age., Dennis R. Berkebile, Anthony P. Weinhold, David B. Taylor
David B Taylor
Stable flies, Stomoxys calcitrans L., are important pests of confined and pasture cattle. They have been reared in the laboratory to study their biology and to test new methods of control. Research on rearing modifications has concentrated on developing larval diets from materials locally abundant. Under current protocols, pupae form in the medium. Aggregations of pupae were located and removed, often with a considerable amount of extraneous material. Various methods have been developed to separate the pupae from waste material. We describe a method by which wandering larvae are enticed to leave the medium prior to pupariation. The larvae were …
Hamadryas Visual Identification Guide, David W. Markman
Hamadryas Visual Identification Guide, David W. Markman
David W Markman
No abstract provided.
Presence And Prevalence Of Viruses In Local And Migratory Honeybees ( Apis Mellifera ) In Massachusetts, Anna Welch, Francis Drummond, Sunil Tewari, Anne Averill, John P. Burand
Presence And Prevalence Of Viruses In Local And Migratory Honeybees ( Apis Mellifera ) In Massachusetts, Anna Welch, Francis Drummond, Sunil Tewari, Anne Averill, John P. Burand
Anne Averill
Migratory and local bees in Massachusetts were analyzed for seven viruses. Three were detected: black queen cell virus (BQCV), deformed wing virus (DWV), and sacbrood virus (SBV). DWV was most common, followed closely by BQCV and then by SBV. BQCV and SBV were present at significantly higher rates in the migratory bees assayed, bringing into question the impact that these bees have on the health of local bee populations.
The Effect Of Larval Diet And Sex On Nectar Nicotine Feeding Preferences In Manduca Sexta (Lepidoptera: Sphingidae), D. N. Sharp, A. K. Lentz-Ronning, A. J. Barron, Lynn Adler
The Effect Of Larval Diet And Sex On Nectar Nicotine Feeding Preferences In Manduca Sexta (Lepidoptera: Sphingidae), D. N. Sharp, A. K. Lentz-Ronning, A. J. Barron, Lynn Adler
Lynn Adler
No abstract provided.
Colorado Potato Beetle Management On Potatoes: Current Challenges And Future Prospects., Andrei Alyokhin
Colorado Potato Beetle Management On Potatoes: Current Challenges And Future Prospects., Andrei Alyokhin
Andrei Alyokhin
The Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) is the most important insect defoliator of potatoes that can completely destroy potato crops. Its current range covers about 16 million km2 in North America, Europe, and Asia and continues to expand. A complex and diverse life history, combined with an impressive ability to develop insecticide resistance, make the Colorado potato beetle a challenging pest to manage. Beetle populations on commercial farms are usually suppressed by insecticides, which are likely to remain the predominant approach for the foreseeable future. In addition, the beetles can be controlled through the use of relatively …
Life In The Slow Lane: Palmetto Seedlings Exhibit Remarkable Survival But Slow Growth In Florida's Nutrient-Poor Uplands, W. G. Abrahamson, C. R. Abrahamson
Life In The Slow Lane: Palmetto Seedlings Exhibit Remarkable Survival But Slow Growth In Florida's Nutrient-Poor Uplands, W. G. Abrahamson, C. R. Abrahamson
Warren G. Abrahamson, II
The palmettos Serenoa repens and Sabal etonia are crucial foundation species in many peninsular Florida vegetative associations. We monitored the survival and growth of individual palmetto seedlings using two cohorts found in different vegetative associations. Seedling cohorts containing both S. repens and S. etonia were individually tagged in 1989 and have been monitored until 2008, a period of 19 years. One cohort (N = 100 seedlings) occurs in a xeric, “inopina-phase” scrubby flatwoods and a second cohort (N =78 seedlings) lives in a well-drained, “wiregrass-phase” flatwoods. The soils at both sites are very nutrient-poor Entisols that show rapid permeability, low …
Stimulatory And Suppressive Effects Of Novaluron On The Colorado Potato Beetle Reproduction., Andrei Alyokhin, Ryan Guillemette, Raymond Choban
Stimulatory And Suppressive Effects Of Novaluron On The Colorado Potato Beetle Reproduction., Andrei Alyokhin, Ryan Guillemette, Raymond Choban
Andrei Alyokhin
The Colorado potato beetle, Leptinotarsa decemlineata (Say), is one of the most damaging insect pests of potato. Novaluron is a relatively new benzoylphenyl urea insect growth regulator with good activity against this pest. Earlier studies revealed that feeding on potato foliage treated with novaluron induces reversible egg hatch inhibition in adult Colorado potato beetles. We investigated if novaluron effects depend on physiological state of the beetles at the time of exposure. The following four treatments were created: young beetles unmated at the beginning of the experiment and feeding on potato foliage treated with novaluron, young beetles unmated at the beginning …
Interactions Of Native And Non-Native Lady Beetle Species (Coleoptera: Coccinellidae) With Aphid-Tending Ants In Laboratory Arenas, Christy Finlayson, Andrei Alyokhin, Erin Porter
Interactions Of Native And Non-Native Lady Beetle Species (Coleoptera: Coccinellidae) With Aphid-Tending Ants In Laboratory Arenas, Christy Finlayson, Andrei Alyokhin, Erin Porter
Andrei Alyokhin
Interactions between lady beetles and the European fire ant (Myrmica rubra L.) tending potato aphids [Macrosiphum euphorbiae (Thomas)] were compared in the laboratory. Lady beetle species native to North America (Coccinella trifasciata perplexa Mulsant, Coleomegilla maculata lengi Timberlake, Hippodamia convergens Guerin-Meneville) and non-native species of Palearctic origin [Coccinella septempunctata L., Harmonia axyridis (Pallas), Hippodamia variegata (Goeze), Propylea quatuordecimpunctata L.)] were evaluated. Harmonia axyridis consumed a significantly greater number of aphids compared with all other species but C. septempunctata. Ant stings affected H. variegata and C. septempunctata to a greater extent than other species. Ants showed a significantly greater amount of …
Predation On Pupa Of Chrysomya Rufifacies (Marquart) (Diptera: Calliphoridae) By Parasitoid, Exoristobia Philippinensis Ashmead (Hymenoptera: Encyrtidae) And Ophyra Spinigera Larva (Diptera: Muscidae), Chen Chee Dhang
Chen Chee Dhang
A forensic entomological study was conducted using monkey carcasses (Macaca fascicularis Raffles) that were placed in either an outdoor or indoor environment at a coastal area in Tanjung Sepat, Selangor, Malaysia during May until August 2008. We collected pupae of Chrysomya rufifacies (Marquart) from the carcasses and kept them individually. The emergence of 13 parasitic microhymenopteran, from one of the pupae occurring within a week were identified as Exoristobia philippinensis Ashmead (Hymenoptera: Encyrtidae). Another observation was made whereby a pupa of C. rufifacies was predated by a muscid larva, Ophyra spinigera (Stein). The larva squeezed into the pupa and consumed …
Towards A New Paradigm In Mayfly Phylogeny (Ephemeroptera): Combined Analysis Of Morphological And Molecular Data, T. Heath Ogden
Towards A New Paradigm In Mayfly Phylogeny (Ephemeroptera): Combined Analysis Of Morphological And Molecular Data, T. Heath Ogden
T. Heath Ogden
This study represents the first formal morphological and combined (morphological and molecular) phylogenetic analyses of the order Ephemeroptera. Taxonomic sampling comprised 112 species in 107 genera, including 42 recognized families (all major lineages of Ephemeroptera). Morphological data consisted of 101 morphological characters. Molecular data were acquired from DNA sequences of the 12S, 16S, 18S, 28S and H3 genes. The Asian genus Siphluriscus (Siphluriscidae) was supported as sister to all other mayflies. The lineages Carapacea, Furcatergalia, Fossoriae, Pannota, Caenoidea and Ephemerelloidea were supported as monophyletic, as were many of the families. However, some recognized families (for example, Ameletopsidae and Coloburiscidae) and …
Combined Morphological And Molecular Phylogeny Of Ephemerellidae (Ephemeroptera), T. Heath Ogden
Combined Morphological And Molecular Phylogeny Of Ephemerellidae (Ephemeroptera), T. Heath Ogden
T. Heath Ogden
This study represents the first combined molecular and morphological analysis for the mayfly family Ephemerellidae (Ephemeroptera), with a focus on the relationships of genera and species groups of the subfamily Ephemerellinae. The phylogeny was constructed based on DNA sequence data from 3 nuclear (18S rDNA, 28S rDNA, histone H3) and 2 mitochondrial (12S rDNA, 16S rDNA) genes, and 23 morphological characters. Taxon sampling for Ephemerellidae included exemplars from all 25 extant genus groups and additional representatives from those genera with the highest diversity. Ephemerellidae appears to consist of three major clades. Ephemerella, the largest genus of Ephemerellidae, and Serratella were …