Suscetibilidade de adultos de Bemisia tabaci biótipo B a inseticidas

Esashika, Danilo Akio Sousa; Michereff-Filho, Miguel; Bastos, Cristina Schetino; Inoue‐Nagata, Alice K.; Dias, Antônio Macedo; Ribeiro, Matheus G.P.M.

doi:10.1590/s0102-053620160000200007

Cited by 9 publications

(6 citation statements)

References 25 publications

(16 reference statements)

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“…When evaluating Simmental animals, Soji & Muchenje (2016) obtained mean SF values of 4 kg in mature samples after 7 days. This difference in tenderness compared with the values found in the present study can be explained by the interference of the B. taurus indicus genotype in the crossing, since zebu animals tend to present less tender meat (Whipple et al, 1990;Restle et al, 1999). Whipple et al (1990) pointed out that 37.5% of zebu blood in the crossbreeds is enough to interfere in meat tenderness, resulting in less tender samples.…”

Section: Resultscontrasting

confidence: 58%

Heat shock proteins on beef quality

Moncau

Rosa

Eler

et al. 2018

Pesq. agropec. bras.

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The objective of this work was to quantify heat shock proteins (HSP) 27 and 70 in the Longissimus dorsi muscle of cattle during aging and to check their potential as biomarkers for meat quality. A total of 191 steers ½ South African Simmental x ½ Nellore (16-18 months, 391.7±99.7 kg), castrated, and feedlot finished were used. Meat quality was measured by pH, color, cooking loss, and shear force (SF) at 1 and 14 days of aging time. HSP27 and HSP70 were quantified according to the SF values in the more and less tender meat groups, with 20 samples each, for each aging time. HSP27 concentrations in more and less tender meat decrease from 1 to 14 days of aging, and do not differ when evaluated at the same period. HSP70 concentrations in more tender meat increase during aging, and, in less tender meat, there is no difference between periods or at the same period. The correlations between the HSP27 and HSP70 concentrations and meat quality characteristics are low for South African Simmental x Nellore, which indicate the low potential of HSP as biomarkers for these traits, especially for meat tenderness. Proteínas de choque térmico na qualidade da carneResumo -O objetivo deste trabalho foi quantificar as proteínas de choque térmico (HSP) 27 e 70 no músculo Longissimus dorsi bovino, durante a maturação, e verificar seu potencial como biomarcadores na qualidade da carne. Foram utilizados 191 novilhos ½ Simental Sul Africano x ½ Nelore (16-18 meses, 391,7±99,7 kg), castrados e terminados em confinamento. A qualidade da carne foi mensurada por pH, cor, perda de água por cocção e força de cisalhamento (FC) a 1 e 14 dias de maturação. A quantificação de HSP27 e HSP70 foi realizada a partir dos valores de FC, nos grupos de carne mais e menos macia, com 20 amostras cada um, para cada tempo de maturação. As concentrações de HSP27 nas carnes mais e menos macias diminuem no decorrer de 1 a 14 dias de maturação, e não diferiram no mesmo período. As concentrações de HSP70 nas carnes mais macias aumentam com o decorrer da maturação, e, nas menos macias, não há diferença entre períodos ou no mesmo período. As correlações entre as concentrações de HSP27 e HSP70 e as características de qualidade da carne são baixas para Simental Sul Africano x Nelore, o que indica o baixo potencial das HSP como biomarcadores para essas características, especialmente para maciez da carne.Termos para indexação: Bos taurus indicus, biomarcador, HSP27, HSP70, maciez da carne.

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Section: Resultscontrasting

confidence: 58%

Heat shock proteins on beef quality

Moncau

Rosa

Eler

et al. 2018

Pesq. agropec. bras.

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“…The silverleaf whitefly, one of the major tomato pests, can cause damages above 60% in the production (Dinsdale et al, 2010). It is an important pest all over the world, being responsible for the transmission of a begomovirus disease complex in the tomato crop (Dinsdale et al, 2010;Esashika et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Mini tomato genotypes resistant to the silverleaf whitefly and to two-spotted spider mites

et al. 2017

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ABSTRACT. The mini tomato production has expanded, becoming an amazing alternative for enterprise. Despite all commercial potential, the cultivation has the occurrence of pests as main obstacle during the crop development. Nowadays, there are no researches that aimed obtaining genotypes with high acylsugar content, capable of providing a broad-spectrum resistance to pests. This study aimed the selection of mini tomato genotypes, with high acylsugar content, and checking the resistance level to the silverleaf whitefly [Bemisia tabaci (Gennadius)] and to the two-spotted spider mites (Tetranychus urticae Koch). Sixteen genotypes were evaluated, from which 12 were on the generation F 2 BC 1 , originated from the interespecific cross between Solanum pennellii versus Solanum lycopersicum L. and 4 were check treatments, being three of cultivated tomatos (cv. Santa Clara, UFU-02, and UFU-73) and the wild accession LA-716 (S. pennellii). The variables analyzed were acylsugar content, repellency to the silverleaf whitefly, repellence to the two-spotted spider mites, and density of glandular trichomes. The genotypes UFU-22-F 2 BC 1 #9 and UFU-73-F 2 BC 1 #11 have high acylsugar content and both are resistant to the pests that were evaluated. New studies must be conducted seeking for inbred lines, obtained from the selected genotypes, aiming to get commercial hybrids with high acylsugar content.

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“…Pimetrozine acts by interfering with the feeding behavior of insects, more specifically of aphids, blocking feeding through salivary gland paralysis, by means of a neurotoxic mechanism (NICHOLSON et al, 1995;ESASHIKA et al, 2016). Among the effects caused by chlorantraniliprole in insects is paralysis, lethargy, cessation of feeding and finally death (LAHM et al, 2007).…”

Section: Resultsmentioning

confidence: 99%