Development of three species of Epilachna (Coleoptera: Coccinellidae) in three temperature and photoperiod combinations
Three species of Epilachna - E. paenulata (Germar, 1824); E. cacica (Guérin, 1844) and E. spreta (Mulsant, 1850) - were reared on pumpkin leaves (Cucurbita pepo L.) in three different conditions of temperature and photoperiod: (warm – 25°C ± 2°C, photoperiod 12/12 hrs: cold – 20°C ± 2°C, photoperiod 12/12 hrs; normal = ambient temperature, ranging from 16.67°C to 27,02°C, natural photoperiod). Development time and growth rates were statistically compared by Mann-Whitney "U" Test and analysed by the Principal Components Analysis. E. cacica showed the highest size and longest developmental period for all the three environmental conditions, while E. paenulata showed the smallest sire and the shortest developmental period. As a rule, greater size and longer developmental time were obtained at the 1ow temperature, whereas smaller size and shorter period of development were observed at the higher temperature, for the three species. The growth values were compared to Bergmann's and Dyar's rules.
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Pesquisa Agropecuaria Brasileira
2014
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rev-pab-br-article-149502014-10-29T18:46:36Z Development of three species of Epilachna (Coleoptera: Coccinellidae) in three temperature and photoperiod combinations Desenvolvimento de três espécies de Epilachna (Coleoptera: Coccinellidae) em três combinações de temperatura e fotoperíodo Almeida, Lúcia Massutti de Marinoni, Renato Contin ontogenetic development; Cucurbitapepo; principal components analysis desenvolvimento ontogenético; Cucurbita pepo; análise dos componentes principais Three species of Epilachna - E. paenulata (Germar, 1824); E. cacica (Guérin, 1844) and E. spreta (Mulsant, 1850) - were reared on pumpkin leaves (Cucurbita pepo L.) in three different conditions of temperature and photoperiod: (warm – 25°C ± 2°C, photoperiod 12/12 hrs: cold – 20°C ± 2°C, photoperiod 12/12 hrs; normal = ambient temperature, ranging from 16.67°C to 27,02°C, natural photoperiod). Development time and growth rates were statistically compared by Mann-Whitney "U" Test and analysed by the Principal Components Analysis. E. cacica showed the highest size and longest developmental period for all the three environmental conditions, while E. paenulata showed the smallest sire and the shortest developmental period. As a rule, greater size and longer developmental time were obtained at the 1ow temperature, whereas smaller size and shorter period of development were observed at the higher temperature, for the three species. The growth values were compared to Bergmann's and Dyar's rules. Foram criadas três espécies de Epilachna - E. paenulata (Germar, 1824); E. cacica (Guérin, 1844) e E. spreza (Mulsant, 1850) - em três combinações de temperatura e fotoperíodo: quente = 25°C ± 2°C, fotoperíodo de 12/12 h; frio = 20°C ± 2°C, fotoperíodo de 12/12 h; normal – temperatura ambiente, variou de 16,67°C a 27,02°C com fotoperíodo natural. Como alimento foram utilizadas folhas de aboboreira (Cucurbita pepo L.). O tempo de desenvolvimento das fases ontogenéticas e a taxa de crescimento das três espécies foram avaliados estatisticamente pelo Teste “U” de Mann-Whitney e estudadas através da Análise dos Componentes Principais. Epilachna cacica apresentou os maiores valores de tamanho e os mais longo períodos de desenvolvimento nas três diferentes condições de ambiente, enquanto a E. paenulata apresentou os menores tamanhos e os períodos mais curtos de desenvolvimento. Os maiores tamanhos e os mais longos períodos de desenvolvimento foram observados, em geral, em baixa temperatura. Ao contrário, os menores tamanhos e os períodos mais curtos de desenvolvimento, nas três espécies, foram observados nas mais altas temperaturas. Os valores e crescimento são comparados aos postulados das regras de Bergmann e de Dyar. Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira 2014-04-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.sct.embrapa.br/index.php/pab/article/view/14950 Pesquisa Agropecuaria Brasileira; v.21, n.9, set. 1986; 927-939 Pesquisa Agropecuária Brasileira; v.21, n.9, set. 1986; 927-939 1678-3921 0100-104x por https://seer.sct.embrapa.br/index.php/pab/article/view/14950/8656 |
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Almeida, Lúcia Massutti de Marinoni, Renato Contin |
| spellingShingle |
Almeida, Lúcia Massutti de Marinoni, Renato Contin Development of three species of Epilachna (Coleoptera: Coccinellidae) in three temperature and photoperiod combinations |
| author_facet |
Almeida, Lúcia Massutti de Marinoni, Renato Contin |
| author_sort |
Almeida, Lúcia Massutti de |
| title |
Development of three species of Epilachna (Coleoptera: Coccinellidae) in three temperature and photoperiod combinations |
| title_short |
Development of three species of Epilachna (Coleoptera: Coccinellidae) in three temperature and photoperiod combinations |
| title_full |
Development of three species of Epilachna (Coleoptera: Coccinellidae) in three temperature and photoperiod combinations |
| title_fullStr |
Development of three species of Epilachna (Coleoptera: Coccinellidae) in three temperature and photoperiod combinations |
| title_full_unstemmed |
Development of three species of Epilachna (Coleoptera: Coccinellidae) in three temperature and photoperiod combinations |
| title_sort |
development of three species of epilachna (coleoptera: coccinellidae) in three temperature and photoperiod combinations |
| description |
Three species of Epilachna - E. paenulata (Germar, 1824); E. cacica (Guérin, 1844) and E. spreta (Mulsant, 1850) - were reared on pumpkin leaves (Cucurbita pepo L.) in three different conditions of temperature and photoperiod: (warm – 25°C ± 2°C, photoperiod 12/12 hrs: cold – 20°C ± 2°C, photoperiod 12/12 hrs; normal = ambient temperature, ranging from 16.67°C to 27,02°C, natural photoperiod). Development time and growth rates were statistically compared by Mann-Whitney "U" Test and analysed by the Principal Components Analysis. E. cacica showed the highest size and longest developmental period for all the three environmental conditions, while E. paenulata showed the smallest sire and the shortest developmental period. As a rule, greater size and longer developmental time were obtained at the 1ow temperature, whereas smaller size and shorter period of development were observed at the higher temperature, for the three species. The growth values were compared to Bergmann's and Dyar's rules. |
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Pesquisa Agropecuaria Brasileira |
| publishDate |
2014 |
| url |
https://seer.sct.embrapa.br/index.php/pab/article/view/14950 |
| work_keys_str_mv |
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1813449971667566592 |