Comparative biology of two congeneric stinkbugs, Chinavia impicticornis and C. ubica (Hemiptera: Pentatomidae)

Abstract

-The objective of this work was to compare the biology of Chinavia impicticornis and C. ubica (Hemiptera: Pentatomidae), two species of stinkbugs that occur as secondary pests in soybean. Life table procedures were used for evaluating nymphs, and fecundity tables for evaluating adults, in order to establish the demographics of the two species. The two species have similar demographic parameters, and the development of immature stages, from egg to adult, had similar duration periods of approximately 30 days. In both species, eggs and second-instar nymphs were the stages with higher mortality. Total egg production did not differ between females of both species. Fecundity and survival curves for adults showed similar trends in both species. However, C. ubica had greater potential to increase its populations, since its fecundity parameters were significantly higher than those of C. impicticornis. Moreover, the generational time and the time required to double the population size were shorter in C. ubica. Prolonged longevity, long oviposition period, high fecundity, and the ability to rapidly increase their populations indicate that both species can become potential pests in favorable environments.Index terms: Glycine max, age-specific fecundity, life table, mass rearing, reproductive potential, stinkbugs. Biologia comparada de dois percevejos congenéricos, Chinavia impicticornise C. ubica (Hemiptera: Pentatomidae)Resumo -O objetivo deste trabalho foi comparar a biologia de Chinavia impicticornis e de C. ubica (Hemiptera: Pentatomidae), duas espécies de percevejos que ocorrem como pragas secundárias em soja. Foram utilizados procedimentos de tabelas de vida para a avaliação de ninfas, e tabelas de fertilidade para a de adultos, no intuito de estabelecer os parâmetros demográficos das duas espécies. As duas espécies apresentam parâmetros demográficos similares, e o desenvolvimento dos estágios imaturos, de ovo a adulto, apresentou duração similar, de aproximadamente 30 dias. Nas duas espécies, ovos e ninfas do segundo instar foram os estágios com maior mortalidade. A produção total de ovos não diferiu entre as fêmeas de ambas as espécies. As curvas de fecundidade e de sobrevivência para adultos mostraram tendências semelhantes nas duas espécies. Entretanto, C. ubica apresentou maior potencial de aumentar suas populações, uma vez que seus parâmetros de fecundidade foram significativamente maiores do que os de C. impicticornis. Além disso, o tempo generacional e o tempo necessário para dobrar a população em tamanho foram mais curtos em C. ubica. A longevidade prolongada, o longo período de oviposição, a alta fertilidade e a capacidade de aumentar rapidamente suas populações indicam que ambas as espécies podem tornar-se pragas potenciais, em ambientes favoráveis.Termos para indexação: Glycine max, fecundidade por idade, tabela de vida, criação em massa, potencial reprodutivo, percevejos.

The Morphological Characters of Egg and Relationship of Immature Stages of Hermolaus modestus (Heteroptera: Pentatomidae: Eysarcorini)

“…(Hemiptera: Pentatomidae) and treated them with biological control agent Telenomus podisi under controlled environmental conditions. The biological comparison of Chinavia impicticornis and C. ubica (Hemiptera: Pentatomidae) pests and showed the fecundity table (Silva et al, 2015). The duration of development from egg to adult was calculated approximately 30 days for both species.…”

Anatomy of male and female reproductive organs of stink bugs pests (Pentatomidae: Heteroptera) from soybean and rice crops

“…If the attack strikes during grain development and pod filling, major losses might occur (Galileo & Heinrichs 1978). Chinavia ubica Rolston, 1983 is a minor pest of soybean crop (Silva et al 2015); however, Chinavia Orian, 1965 -senior synonym of Acrosternum Fieber, 1860 -is polyphagous and causes damage to several crops, such as vegetables and fruits (Panizzi et al 2000). The stink bug Oebalus insularis Stål, 1872 is a harmful pest to rice crops and is very common in Colombia, Central America, and the Caribbean.…”

Vibratory Communication and its Relevance to Reproductive Isolation in two Sympatric Stink Bug Species (Hemiptera: Pentatomidae: Pentatominae)

“…ubica (Rolston, 1983) are widely distributed in Brazil (Schwertner and Grazia 2007), being found in both natural and agricultural habitats on the same host-plants (Panizzi et al 2000;Schwertner and Grazia 2007) and, like other stink bugs, frequently show aggregate spatial distribution (Higuchi 1992;Roggia 2009;Tillman et al 2009). The high possibility of reproductive interference is based on observation that both species populations have the same spatial-temporal distribution in central Brazil and that several couples were detected along the insect life (Silva et al 2015).…”