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Results 301 - 350 of 1100
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Perez-Lachaud, Gabriela - - 2011
The Neotropical ant Ectatomma tuberculatum (Olivier) shows a polymorphic social organization with strictly monogynous or facultative polygynous populations along its distribution range. The causative factors of these variations in social organization are unknown but biotic and abiotic environmental factors might explain the differences. In particular, recent studies have suggested that ...
Copeland, Robert - - 2011
The submersed aquatic plant, Hydrilla verticillata (L.f.) Royle (hydrilla) is a serious invasive weed in the southern USA, but in Central African lakes, it is not considered a problem. Previous surveys in Lake Tanganyika identified 2 species of chironomid midges in the genus Polypedilum Kieffer that putatively caused tip-mining damage ...
Martin, Cliff - - 2011
The effects of feeding on leaves by adult Diaprepes root weevil, Diaprepes abbreviatus L. (Coleoptera: Curculionidae), and flooding on leaf gas exchange [net C[O.sub.2] assimilation (A), transpiration (E), and stomatal conductance (gs)], plant growth (root, stem, leaf, and total plant dry weights, stem diameter, and plant height) and adult host ...
Calatayud, Paul-Andre - - 2011
The cassava mealybug Phenacoccus herreni (Sternorryncha: Pseudococcidae) is a pest of cassava, Manihot esculenta Crantz (Euphorbiaceae), in South America. Proteins, representing direct gene products, are prime candidates in genetic engineering manipulations for host plant resistance. Jatropha gossypiifolia L. (Euphorbiaceae), a plant species known to contain proteins toxic to insects, exhibited ...
Nafria, Juan M. - - 2011
Very little is known about the Mexican fauna of Uroleucon; only 4 species have been recorded, which is fewer than in Central America and the Caribbean. One hundred ninety two samples collected in 19 Mexican states from the Museum national d'Histoire naturelle (Paris) collection have been studied and 30 species ...
Reinert, James - - 2011
Hunting billbugs (Sphenophorus venatus vestitus Chittenden) cause damage to zoysiagrass (Zoysia spp.) and bermudagrass (Cynodon spp), which is often misdiagnosed as the effects of drought, disease, or another soil insect. Populations have increased over the past several decades and are causing extensive damage on grasses in lawns, golf courses and ...
Kariuki, E.M. - - 2011
Survival assays were conducted with beet armyworm (BAW), Spodoptera exigua (Hubner), a tortoise beetle, Gratiana bolivana Spaeth, and western flower thrips (WFT), Frankliniella occidentalis (Pergande), on tropical soda apple (TSA), Solanum viarum Dunal, a relative of tomato. Both S. exigua and G. boliviana seem to induce plant defenses in tropical ...
Held, David - - 2011
Azalea lace bugs (Heteroptera: Tingidae) are common pests of azaleas in the landscape and in plant production. Adults and nymphs feed on foliage causing stippling damage, which persists for multiple seasons. This study was conducted to determine the speed of translocation and residual longevity of various soil-applied neonicotinoid insecticides for ...
Armstrong, J. - - 2011
The yellowstriped armyworm (YSAW), Spodoptera ornithogalli (Guenee), has a broad host range and can be an economic threat to cotton in southern growing regions of the United States by consuming leaves and damaging fruiting forms. Field grown cotton varieties containing the endotoxins from Bacillus thuringiensis, (Cry1Ac = Bollgard[R]; Cry1Ac + ...
Amarasekare, Kaushalya - - 2011
We investigated the life history of an exotic soft scale insect, Phalacrococcus howertoni Hodges and Hodgson that damages croton and several other economically important ornamental and fruit plants in Florida. There was no difference in the development, survival, and reproduction of this scale insect species when reared either on croton ...
Wetterer, James - - 2011
Nylanderia flavipes (formerly Paratrechina flavipes), an Asian species, was first found outside its native range in a Philadelphia park in 1939. To evaluate the geographic spread of N. flavipes, I compiled specimen records from >250 sites, documenting its earliest known records for 27 geographic areas (countries and U.S. states), including ...
Vazquez, Cara - - 2011
The southern chinch bug, Blissus insularis Barber, is a serious insect pest of St. Augustinegrass (Stenotaphrum secundatum [Walt.] Kuntze). Control for B. insularis is mainly achieved through insecticides. This pest has developed resistance to several insecticide classes because of near-constant exposure. The goals of this study were to sample select ...
Wang, Xing - - 2011
A new bombycid genus Valvaribifidum is described based on V. huananense sp. nov. from South China. Trilocha sinica Dierl, 1979 is transferred to the new genus, i.e., Valvaribifidum sinica (Dierl 1979) comb. nov. The genus is separable from its closely related genus Triuncina Dierl, 1978 by male genitalia with valva ...
Graf-Peters, Leticia - - 2011
Ciids or minute tree-fungus beetles (Coleoptera: Ciidae) are amongst the most abundant and speciose fungivorous beetles. They spend most of their lives in or around polypore basidiomes, which are used as a food resource and shelter by larvae and adults. The study of Neotropical ciids is incipient and there is ...
Hall, H. - - 2011
Bee surveys were conducted at 5 organic vegetable farms and 1 wildflower farm in Alachua County in north-central Florida. Wild bees were collected passively with colored cups and actively with nets. A total of 4,662 bees was captured belonging to 28 genera and 95 species. Nomada sulphurata Smith is a ...
Li, Hou-Feng - - 2011
The Formosan pangolin, Manis pentadactyla pentadactyla Linnaeus, is an endangered species currently. To understand the termite species available as pangolin food sources, a field survey was conducted in a 120-ha habitat in Southeast Taiwan. One hundred and thirty three termite samples were collected, representing 7 species in 6 genera and ...
Maya-Martinez, Aixchel - - 2011
We have studied the origin of the Charaxinae lepidopteran fauna of the Yucatan Peninsula in a panbiogeographical analysis. The expectation was that this biota had a single origin (one generalized track) from Central America. A database was generated with worldwide distributional records of Charaxinae. The panbiogeographical analysis used the program ...
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