1966
DOI: 10.1093/aesa/59.4.823
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Effect of Temperature on the Production of Males and Sexual Mosaics in a Uniparental Race of Trichogramma semifumatum (Hymenoptera: Trichogrammatidae)12

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Cited by 78 publications
(53 citation statements)
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“…The following biological parameters were observed at each temperature: cycle duration (egg-adult), conducted through daily observations, always at the same time, in a 24-hour interval; parasitism, by counting the number of darkened eggs; emergence percentage, carried out under a stereoscopic microscope, by counting the host eggs in which there was an orifice intended for the adults exit; number of emerged adults per egg, calculated by dividing the total number of adults by the total number of orifices observed in each treatment ; sex ratio (SR = number of females/number of females + number of males), determined according to Bowen & Stern (1966); percentage of viability, by counting the host eggs in which there was an orifice for adults exit; longevity, carried out by daily observations, always at the same time, in a 24-hour interval, for mortality accounting adapted from Bueno et al (2012).…”
Section: Methodsmentioning
confidence: 99%
“…The following biological parameters were observed at each temperature: cycle duration (egg-adult), conducted through daily observations, always at the same time, in a 24-hour interval; parasitism, by counting the number of darkened eggs; emergence percentage, carried out under a stereoscopic microscope, by counting the host eggs in which there was an orifice intended for the adults exit; number of emerged adults per egg, calculated by dividing the total number of adults by the total number of orifices observed in each treatment ; sex ratio (SR = number of females/number of females + number of males), determined according to Bowen & Stern (1966); percentage of viability, by counting the host eggs in which there was an orifice for adults exit; longevity, carried out by daily observations, always at the same time, in a 24-hour interval, for mortality accounting adapted from Bueno et al (2012).…”
Section: Methodsmentioning
confidence: 99%
“…T. pretiosum linhagem bonagota foi coletada em ovos de B. salubricola em pomares comerciais de macieiras em Fraiburgo, SC, Brasil (27°02' S; 50°55' W) (Monteiro et al 2004 O parasitismo, avaliado por meio da contagem de ovos escuros do hospedeiro; a emergência, por meio da contagem dos ovos do hospedeiro que apresentavam orifício de saída dos adultos, vistos sob microscópio estereoscópio e, a razão sexual, calculada por RS= (nº de fêmeas/nº de adultos), sendo o sexo dos indivíduos determinado com base nas características morfológicas das antenas (Bowen & Stern, 1966), foram os parâmetros avaliados. O parasitismo e a emergência foram corrigidos por Abbott (1925) [(T -t) / T]*100, onde: T = número de insetos vivos na parcela testemunha e t = núme-ro de insetos vivos na parcela tratada.…”
Section: Methodsunclassified
“…Os ovos do hospedeiro alternativo foram colados em pedaços de cartolina azul (8 x 2 cm) com goma arábica diluída em água (50%) e em seguida inviabilizados por exposição à A determinação do número de indivíduos por ovo foi calculada por meio da divisão do número total de adultos pelo número total de orifícios observados em 20 ovos de P. includens em cada tubo. O sexo dos parasitóides foi determinado através do dimorfi smo sexual apresentado pelas antenas (Bowen & Stern 1966), com auxílio de microscópio estereoscópico.…”
Section: Methodsunclassified