To use a natural enemy to control an insect pest, it is important to determine the biological parameters of the native populations of the predator. The goal of this study was determinate the biological parameters of O. insidiosus fed on Sitotroga cerealella eggs. A batch of 225 O. insidiosus eggs were laid into bean pods. The bean pods were kept in glass jars, and the eggs and first instar nymphs were counted daily. All nymphs were extracted and individualized in Petri dishes. The presence/absence of exuvie was observed daily as a way to assess the emergence of adults from the nymphal stage. Seventeen adult couples were placed into Petri dishes with a segment of bean pod. The bean pod segments were extracted and replaced daily, counting the number of eggs present on the pods. The life cycle, survival percentage, sex ratio, male/female longevity, pre ovoposition, ovoposition and post ovoposition periods were determined. Finally, fertility life table parameters were estimated. The nymphal development time was 12.0 ± 0.22 days, with 80.47% ± 3.23 survival, while the total development time was 15.0 ± 0.23 days, with 66.67% ± 1.90 survival. Of the total adults that emerged, 30.95% ± 2.38 were females. The female sex ratio was 0.75, and the oviposition period was 0.86 ± 9.21 days with a total fertility of 60.29 ± 7.39 eggs. The data estimated from the fertility life table were: Ro: 28.26, rm: 0.14, T: 24.26, ?: 1.13 and DT: 5.01.

To use a natural enemy to control an insect pest, it is important to determine the biological parameters of the native populations of the predator. The goal of this study was determinate the biological parameters of O. insidiosus fed on Sitotroga cerealella eggs. A batch of 225 O. insidiosus eggs were laid into bean pods. The bean pods were kept in glass jars, and the eggs and first instar nymphs were counted daily. All nymphs were extracted and individualized in Petri dishes. The presence/absence of exuvie was observed daily as a way to assess the emergence of adults from the nymphal stage. Seventeen adult couples were placed into Petri dishes with a segment of bean pod. The bean pod segments were extracted and replaced daily, counting the number of eggs present on the pods. The life cycle, survival percentage, sex ratio, male/female longevity, pre ovoposition, ovoposition and post ovoposition periods were determined. Finally, fertility life table parameters were estimated. The nymphal development time was 12.0 ± 0.22 days, with 80.47% ± 3.23 survival, while the total development time was 15.0 ± 0.23 days, with 66.67% ± 1.90 survival. Of the total adults that emerged, 30.95% ± 2.38 were females. The female sex ratio was 0.75, and the oviposition period was 0.86 ± 9.21 days with a total fertility of 60.29 ± 7.39 eggs. The data estimated from the fertility life table were: Ro: 28.26, rm: 0.14, T: 24.26, ?: 1.13 and DT: 5.01.

Este estudio describe el ciclo biológico de Copitarsia uncilata Burgos & Leiva (Lepidoptera: Noctuidae) en condiciones de laboratorio, sin fotofase y 12 horas de fotofase, criado bajo tres dietas naturales. El ciclo de vida de C. uncilata fue significativamente más corto (76,46 ± 1,01 días, p=0,033) en hembras criadas en la dieta de alstroemeria (Alstroemeria sp.) sin fotofase, y el ciclo más corto (79,78 ± 0,36 días, p=0,046) en machos criados con broccoli (Brassica oleracea italica) con fotofase. La emergencia de los adultos fue 100% y 73.33% de larvas alimentadas con alstroemeria, 90,9% y 88,88% alimentadas con broccoli, 86,2% y 50% alimentadas con coliflor (Brassica oleracea var. botrytis), sin fotofase y con exposición a fotofase respectivamente. La proporción sexual (macho:hembra) de individuos sin fotofase, fue más alta en alstroemeria (1:1,3), seguido por coliflor (1:0.6) y broccoli (1:0,5). En el experimento con fotofase, la proporción sexual fue más alta en alstroemeria (1:1,5), seguido por coliflor (1:0,9) y broccoli (1:0,6). Como conclusión, la dieta más apropiada para cría en masa bajo condiciones de laboratorio en términos de los parámetros de ciclo biológico de C. uncilata es broccoli seguido por alstroemeria y coliflor.

This study describes the life cycle of Copitarsia uncilata Burgos & Leiva (Lepidoptera: Noctuidae) under laboratory conditions without photophase and a second experiment with photophase of 12 hours on three natural diets. The life cycle of C. uncilata was significantly shorter for females (76.46 ± 1.01 days, p=0.033) reared on alstroemeria (Alstroemeria sp.) diet without photophase, and for males (79.78 ± 0.36 days, p=0.046) reared on broccoli (Brassica oleracea italica), with photophase. The emergence of the adults was 100% and 73.33% from larvae fed on alstroemeria, 90.9% and 88.88% for individuals fed on broccoli, 86.2% and 50% for those fed on cauliflower (Brassica oleracea var. botrytis), without and with photophase respectively. The sex ratio (male:female) of individuals reared without photophase, evidenced a higher rate of females on alstroemeria (1:1.3), followed by cauliflower (1:0.6) and broccoli (1:0.5). In the experiment with photophase, the sex ratio was higher on alstroemeria (1:1.5), followed by cauliflower (1:0.9) and broccoli (1:0.6). As a conclusion, the most suitable diet for laboratory mass rearing in terms of life cycle parameters of C. uncilata is broccoli followed by alstroemeria and cauliflower.

Nos últimos anos, pesquisas básicas de genética que ajudem no estabelecimento de programas de melhoramento de plantas visando à qualidade nutricional da batata têm tido muita importância. Solanum tuberosum Grupo Phureja é uma espécie que tem potencialidade para a exportação, além de características superiores quando comparadas com espécies de outros grupos. Nesta pesquisa, obteve-se a estimativa da herdabilidade do conteúdo de proteína em batatas nativas da Colômbia por quatro métodos: componentes da variância através do ANAVA, regressão pai-progênie, máxima verossimilhança restrita e estimação bayesiana. O teor de proteína total foi avaliado em 103 famílias de irmãos maternos. Para este fim, determinou-se o nitrogênio total pelo método Kjeldahl e foi utilizado o fator de conversão em proteína. Por meio destes métodos obtiveram-se estimativas de 0,35, 0,28, 0,40 e 0,41 respectivamente. Tendo em conta estas estimativas e uma pressão de seleção moderada (20%) é possível obter ganhos genéticos na porcentagem de proteína de batata entre 0,55% e 0,78% por ciclo de seleção.

In recent years, genetic studies that supports the plant breeding program for improve the nutritional value of potato tuber have been very important. Solanum tuberosum Group Phureja is a species with high potential for exportation and better nutritional characteristics than species from other groups. In this research we estimate de heritability by variance components based on analysis of variance, parent offspring regression, restricted maximum likelihood and bayesian estimation. The total protein content was assessed in 103 sib maternal families. For this purpose we determined the total nitrogen by the Kjeldahl method and the protein conversion factor was used. The estimates were 0.35, 0.28, 0.40 and 0.41 respectively. According to the heritability estimates and supposing a moderate selection pressure (20%), increments in protein content from0.55% to 0.78% could be obtained by each selection cycle.

En los últimos años se ha puesto de manifiesto la importancia de realizar estudios genéticos que permitan llevar a cabo el mejoramiento de la papa a nivel de su valor nutricional. Solanum tuberosum Grupo Phureja es una especie que además de tener un alto potencial para la exportación posee características nutricionales superiores a las de especies provenientes de los otros grupos. En el presente trabajo se realizó la estimación de heredabilidad del contenido de proteína en papa criolla mediante cuatro métodos: componentes de varianza mediante ANOVA de una vía, regresión padre-progenie, máxima verosimilitud restricta y estimación bayesiana. El contenido de proteína total fue evaluado en 103 familias de hermanos medios maternos. Para ello se determinó el nitrógeno total por el método de Kjeldahl y se empleó el factor de conversión a proteína. Para los cuatro métodos de estimación de heredabilidad se obtuvieron estimativos de 0.35, 0.28, 0.40 y 0.41 respectivamente. De acuerdo a las estimaciones de heredabilidad obtenidas, con una presión de selección moderada (20%) sería posible obtener incrementos en porcentaje de proteína entre 0.55% y 0.78% por ciclo de selección.