Results 41 to 50 of about 6,766 (187)

Systematic review of the effects of chemical insecticides on four common butterfly families [PDF]

, 2017
Safeguarding crop productivity by protecting crops from pest attacks entails the wide use of plant protection products that provide a quick, easy and cheap solution.
Manachini, Barbara, Mulé, Rosaria, Robba, Lavinia, Sabella, Giorgio   +3 more
core   +2 more sources

Strategic mowing of roadside milkweeds increases monarch butterfly oviposition

Global Ecology and Conservation, 2019
The eastern North American migratory population of monarch butterflies (Danaus plexippus) has declined precipitously due, in part, to the widespread decline of its obligate host plant, milkweed (Asclepias spp.). Linear right-of-ways (e.g.
Samantha M. Knight, D. Ryan Norris, Rachael Derbyshire, D.T. Tyler Flockhart   +3 more
doaj   +1 more source

Lepidoptera Recorded From the Islands of Western Lake Erie, With a Brief Account of Geology and Flora [PDF]

, 2017
A list of Lepidoptera from the islands of western Lake Erie is presented along with a brief account of the geology, flora, and human activities in the area. The checklist contains 169 species representing 27 families.
Horns, David J, Nault, Brian A, Rings, Roy W   +2 more
core   +2 more sources

Harvesting Training Images for Fine-Grained Object Categories using Visual Descriptions [PDF]

, 2016
We harvest training images for visual object recognition by casting it as an IR task. In contrast to previous work, we concentrate on fine-grained object categories, such as the large number of particular animal subspecies, for which manual annotation is
B Collins, F Schroff, MF Porter, N Zhou
core   +1 more source

Effects on Monarch Butterfly Larvae (Lepidoptera: Danaidae) After Continuous Exposure to Cry1Ab-Expressing Corn During Anthesis [PDF]

, 2004
Effects on monarch butterfly, Danaus plexippus L., after continuous exposure of larvae to natural deposits of Bacillus thuringiensis (Bt) and non-Bt pollen on milkweed, were measured in five studies.
Anderson, Patricia, Calvin, Dennis, Dively, Galen, Hellmich, Richard, Hellmich, Richard, Rose, Robyn, Russo, Joseph, Sears, Mark, Stanley-Horn, Diane   +8 more
core   +3 more sources

Does anthropogenic nitrogen deposition induce phosphorus limitation in herbivorous insects? [PDF]

, 2012
Anthropogenic nitrogen deposition has shifted many ecosystems from nitrogen ( N ) limitation to phosphorus ( P ) limitation. Although well documented in plants, no study to date has explored whether N deposition exacerbates P limitation at ...
Aber, Bertram, Bobbink, Boersma, Bryant, Burnham, Clancy, Cornelissen, Cross, Elser, Elser, Emon, Fagan, Feller, Fischer, Frost, Galloway, Gershenzon, Haddad, Hall, Harborne, Herms, Hidaka, Hillebrand, Huberty, Jones, Karban, Koricheva, Levin, Lightfoot, Mattson, Mooney, Morecroft, Pennings, Perkins, Persson, Peuke, Peñuelas, Plaxton, Raubenheimer, Reich, Reich, Sardans, Seiber, Siemann, Simpson, Speight, Sterner, Sterner, Strauss, Tao, Throop, Vannette, Vannette, Vitousek, Vitousek, Warren, Watts, White, Woods, Woods, Zalucki, Zehnder   +62 more
core   +1 more source

Hierarchy and Scale Influence the Western Monarch Butterfly Overwintering Microclimate

Frontiers in Conservation Science, 2022
Migratory species are expected to demonstrate habitat selection that occurs at multiple spatial and temporal scales. Western monarch butterflies migrate seasonally to overwintering groves at geographically predictable locations along the coast of ...
Kiana Saniee, Francis Villablanca
doaj   +1 more source

Western Monarch Population Plummets: Status, Probable Causes, and Recommended Conservation Actions

Frontiers in Ecology and Evolution, 2019
Western monarch butterflies dropped by ~97% of their average historic abundance between the 1980s and mid-2010s. In winter 2018–2019, the population plummeted even farther, to fewer than 30,000 monarchs, which represents a single year drop of 86% and a ...
Emma M. Pelton, Cheryl B. Schultz, Sarina J. Jepsen, Scott Hoffman Black, Elizabeth E. Crone   +4 more
doaj   +1 more source

Aromatic plants, nest bacterial diversity, and nestling condition in Corsican blue tits

Oikos, EarlyView.
According to the ‘nest protection hypothesis', some passerines incorporate fresh aromatic plants into their nests which reduce pathogens that can negatively affect nestlings. We experimentally evaluated the effect of five aromatic plant species on the nest bacterial microbiota of Corsican blue tits Cyanistes caeruleus.
Hélène Dion‐Phénix, Gabrielle Gingras, Claire Doutrelant, Anne Charmantier, Steven W. Kembel, Denis Réale   +5 more
wiley   +1 more source

Molecular mechanisms of sex determination in Lepidoptera: current status and perspectives

Insect Science, EarlyView.
The genetic basis of sex determination in Lepidoptera was discovered in 2014 in the silkworm Bombyx mori. In this model species, the W chromosome‐derived small piRNA called Fem piRNA downregulates the expression of a Z‐linked gene, Masculinizer (Masc), which leads to the default female‐specific splicing of the doublesex gene (dsxF) and thus to female ...
František Marec, Atsuo Yoshido, Arjen E. van′t Hof   +2 more
wiley   +1 more source