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| Yamamoto,Ana C.; Foerster,Luís A.. |
| The larval ectoparasitoid Euplectrus ronnai (Brèthes) is one of the components of a species complex that attacks the armyworm Mythimna (Pseudaletia) sequax Franclemont (Lepidoptera: Noctuidae). No data are available on the fecundity, longevity and host instar preference of E. ronnai, what prompted the conduction of this research. No parasitism occurred on the first and sixth instars of the host, and a positive relationship was found between host instar and the number of parasitoid eggs/host, which ranged from 1.5 on third- instar hosts to 3.6 on fifth instars. Females of E. ronnai showed a preference for either the fourth or fifth instar of M. sequax. There were no significant differences in the developmental time of the parasitoid, sex ratio, mean number... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Biological control; Parasitoid; Armyworm; Mythimna sequax. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000300016 |
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| Montezano,Débora Goulart; Specht,Alexandre; Sosa-Gómez,Daniel Ricardo; Roque-Specht,Vânia Ferreira; Barros,Neiva Monteiro de. |
| Biotic potential and reprodutcive parameters of Spodoptera eridania (Stoll) (Lepidoptera, Noctuidae) in the laboratory: This study aimed to evaluate the biotic potential and reproductive parameters of Spodoptera eridania (Stoll, 1782) under controlled conditions (25 ± 1ºC, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity and fertility of 15 couples was evaluated. The longevity of females (10.80 days) was not significantly higher than those of males (9.27 days). The mean durations of the pre, post and oviposition periods were 2.067, 0.600 and 8.133 days, respectively. The mean fecundity per female was 1,398 eggs and the mean fertility was 1,367.50 larvae. On average, females copulated 1.133 times. A strong... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armyworm; Development; Insecta; Reproduction; Spermatophore. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000300014 |
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| Montezano,Débora G.; Sosa-Gómez,Daniel R.; Paula-Moraes,Silvana V.; Roque-Specht,Vânia F.; Fronza,Edegar; Barros,Neiva M.; Specht,Alexandre. |
| ABSTRACT The biotic potential and reproductive parameters of Spodoptera dolichos (Fabricius, 1794) were evaluated under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase). The longevity, pre-, post- and oviposition periods, fecundity, and fertility of 25 couples were evaluated. The longevity of females (12.9 days) was not significantly different than that of males (12.4 days). The mean durations of the pre-, post- and oviposition periods were 3.0, 0.4 and 10.4 days, respectively. The mean fecundity was 4,086.0 eggs per female and mean fertility was 3,557.8 larvae per female. On average, a female copulated 1.4 times. The biotic potential of S. dolichos was estimated at 7.138 x 1018 individuals/female/year. The net reproductive rate (Ro)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armyworm; Development; Fecundity; Reproduction; Spermatophore. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702015000600485 |
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| Specht,Alexandre; Roque-Specht,Vânia F.. |
| ABSTRACT The goal of this study was to detail the temporal and morphological parameters of the immature stages of Spodoptera cosmioides (Walker, 1858) and to gather information about their larval host plants. Larvae were reared on artificial diet and under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase). The viability of eggs, larvae (pre-pupae period inclusive) and pupae were 98.97, 97.33, 97.95 and 94.76%, respectively. The average duration of egg, larval, pre-pupal and pupal stages was 3.82, 19.24, 3.20 and 14.81 days, respectively. A small proportion of females (9.48%) passed through seven instars, and female development was significantly slower than male development. The female larvae that developed through six and seven instars... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armyworm; Artificial diet; Development; Life cycle; Soybean pod armyworm. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000400501 |
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| MONTEZANO,DÉBORA G.; SPECHT,ALEXANDRE; SOSA-GÓMEZ,DANIEL R.; ROQUE-SPECHT,VÂNIA F.; BORTOLIN,TARCISO M.; FRONZA,EDEGAR; PEZZI,PATRÍCIA; LUZ,PRISCILA C.; BARROS,NEIVA M.. |
| This study aimed to evaluate the biotic potential, life table parameters and fertility of Spodoptera albula (Walker, 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photo phase). The longevity, pre, post and oviposition periods, fecundity and fertility of 13 couples were evaluated. The longevity of females (13.500 days) was significantly higher than those of males (11.154 days). The mean durations of the pre, post and oviposition periods were 2.615, 1.769 and 9.385 days, respectively. The mean fecundity was 1.417.69 eggs and mean fertility was 1.340.401 larvae, per female. On average, females copulated 1, 231 times. A strong positive correlation was observed between the number of copulations and fecundity (r = 0.847, p <0.001), as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Armyworm; Development; Fecundity; Reproduction; Spermatophore. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000200723 |
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| MONTEZANO,DÉBORA G.; SPECHT,ALEXANDRE; BORTOLIN,TARCISO M.; FRONZA,EDEGAR; SOSA-GÓMEZ,DANIEL R.; ROQUE-SPECHT,VÂNIA F.; PEZZI,PATRÍCIA; LUZ,PRISCILA C.; BARROS,NEIVA M.. |
| This study aimed to detail the temporal and morphological parameters of the immature stages of Spodoptera albula (Walker 1857) under controlled conditions (25 ± 1°C, 70 ± 10% RH and 14 hour photophase) and to gather information about their larval host plants. For this purpose, a new rearing method and artificial diet was employed and validated. The viability of the egg, larval, pupal and pre-pupal stages was 94.54, 97.33, 93.84 and 92.34%, respectively. The average duration of the egg, larval, pupal and pre-pupal stages was 4.14, 16.37, 1.69, and 9.34 days, respectively. During the larval stage, 80.85% of females and 93.99% of males passed through six and remaining through seven instars, with significant larval protandry. The larvae that developed through... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annual crop pest; Armyworm; Artificial diet; Development; Life cycle. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100271 |
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