This study was undertaken to determine the non-target impacts of rangeland grasshopper control using liquid bait formulations of insecticides (canola and corn oil as carriers of carbaryl, diflubenzuron, and malathion). The research was conducted on native rangeland in Wyoming under drought conditions. Three collection methods (pitfall traps, yellow sticky cards, and sweep nets) were used to est...

Serangga hama adalah hewan yang dapat menyebabkan kerugian pada petani. Pengendalian serangga menggunakan aplikasi pestisida ataupun perangkap. Tujuan dari penelitian ini untuk mengetahui kelimpahan masing perangkap terhadap beberapa teknik pengendalian berbeda. Metode eksperimental digunakan yaitu dengan Rancangan Acak Kelompok (RAK) faktor tunggal, terdapat 6 ulangan dan 4 perlakuan terdiri :...

khorasan-e-razavi province in the northeast of iran possesses varied climatic and geographical conditions that lead to a rich biodiversity. an investigation on the status of the fish fauna was carried out from march to october 2013. a total of 401 specimens was collected and identified, from 30 localities among seven counties in this province. sampling was performed using hand net, cast net and...

The frequency-sampling method is widely used to accommodate nonlinear laser tuning in swept-wavelength interferometric techniques such as optical frequency domain reflectometry (OFDR) and swept-wavelength optical coherence tomography (OCT). In this paper we analyze the frequency-sampling method and identify two sources of sampling errors. One source of error is the limit of an underlying approx...

Abstract This work concerns the inventory of invertebrates in apple tree plot Dorset golden variety Tizi-Ouzou area by using four methods trapping (Barber traps, coloured sweep net and butterflies net) during study period from July 2015 until June 2016. allowed us to collect 214 species belonging 96 families, 18 orders five classes invertebrates. Ecological indices make it possible account for ...

Given a Markov chain sampling scheme, does the standard empirical estimator make best use of the data? We show that this is not so and construct better estimators. We restrict attention to nearest neighbor random elds and to Gibbs samplers with deterministic sweep, but our approach applies to any sampler that uses reversible variable-at-a-time updating with deterministic sweep. The structure of...

The extent to which spatial selection is driven by the goals of the observer and by the properties of the environment is one of the major issues in the field of visual attention. Here we review recent experimental evidence from behavioral and eye movement studies suggesting that top-down control has temporal and spatial limits. More specifically, we argue that the first feedforward sweep of inf...

For a genetic locus carrying a strongly beneficial allele which has just fixed in a large population, we study the ancestry at a linked neutral locus. During this “selective sweep” the linkage between the two loci is broken up by recombination and the ancestry at the neutral locus is modeled by a structured coalescent in a random background. For large selection coefficients α and under an appro...