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      Aspectos biológicos de Leucothyreus dorsalis Blanchard (Coleoptera, Scarabaeidae, Rutelinae) Translated title: Biological aspects of Leucothyreus dorsalis Blanchard (Coleoptera, Scarabaeidae, Rutelinae)

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          Abstract

          No Brasil existe uma escassez de informações sobre a bioecologia da maioria das espécies de Scarabaeidae. O objetivo do presente trabalho foi estudar os aspectos biológicos de Leucothyreus dorsalis Blanchard, 1850 em laboratório e a campo. A dinâmica populacional dos adultos foi avaliada de janeiro de 2006 a dezembro de 2007, com uso de armadilha luminosa. Adultos coletados em campo foram mantidos em recipientes de plástico contendo solo e mudas de Brachiaria decumbens Stapf, para obtenção de ovos e dar início aos estudos. Todos os estágios de desenvolvimento foram acompanhados e adultos e imaturos foram mensurados para obtenção de dados biométricos. Foram coletados 3.607 adultos e os picos populacionais de coleta ocorreram em novembro de 2006 e outubro de 2007, com média de 145 e 241 indivíduos coletados, respectivamente. O período embrionário durou em média 15,5 dias, o primeiro instar 32,4 dias, o segundo 38,9 dias, o terceiro 52,7 dias, a fase de pré-pupa 130,7 dias, a fase pupal 23,5 dias e a longevidade 18 dias. O ciclo biológico completou-se em 273,5 dias, o que caracteriza a espécie como univoltina. Verificou-se que do primeiro ao terceiro instar houve um aumento de 4,5 vezes no comprimento e de 3,5 vezes na largura das larvas. Observou-se um aumento de 53,1 vezes no peso larval do primeiro para o terceiro instar. As pupas das fêmeas foram significativamente maiores e mais pesadas que a dos machos. As fêmeas adultas foram maiores que os adultos machos, porém, apresentaram peso semelhante.

          Translated abstract

          In Brazil there is a shortage of information on bioecology of most species of Scarabaeidae. The aim of this work was to study the biological aspects of Leucothyreus dorsalis Blanchard, 1850 in laboratory and field. The population dynamics of adults was evaluated from January, 2006, to December, 2007, with the use of light traps. Adults collected in the field were kept in plastic recipients containing soil and seedlings of Brachiaria decumbens Stapf, to obtain eggs and start the studies. All developmental stages were monitored and adults and immatures measured to get biometric data. 3,607 adults were collected and the population peaks occurred in November, 2006 and October, 2007, with averages of 145 e 241 individuals collected, respectively. The embryonic period took in the average 15.5 days, the 1st instar 32.4 days, the 2nd instar 38.9 days, the 3rd instar 52.7 days, the pre-pupa 130.7 days, the pupa 23.5 days and the longevity of adults 18 days. The biological cycle was completed in 273.5 days, characterizing the specie as univoltine. From the first to the third instar it was observed an increasing of 4.5 times in the extension and 3.5 times in the width of the larvae. There was an increase of 53.1 times in the larval weight from the first to the third instar. The female pupae were significantly larger and heavier than the male ones. The adult females are larger than the adult males, however, they have similar weight.

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          Descripción de los estados inmaduros de tres especies de Anomala, Ancognatha y Ligyrus (Coleoptera: Melolonthidae: Rutelinae y Dynastinae) com observaciones de su biologia

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            A Sixteen-Year Study on the Bivoltinism of Anomala flavipennis (Coleoptera: Scarabaeidae) in Mexico

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              • Abstract: not found
              • Article: not found

              Seasonal Emergence and Flight of Northern and Southern Masked Chafers 1 in Relation to Air and Soil Temperature and Rainfall Patterns 2

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbent
                Revista Brasileira de Entomologia
                Rev. Bras. entomol.
                Sociedade Brasileira De Entomologia (São Paulo )
                1806-9665
                2010
                : 54
                : 3
                : 431-435
                Affiliations
                [1 ] Universidade Estadual de Mato Grosso do Sul Brazil
                Article
                S0085-56262010000300012
                10.1590/S0085-56262010000300012
                dd78e0ac-97b1-4119-bb8a-3d53ffdacf36

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0085-5626&lng=en
                Categories
                ENTOMOLOGY

                Entomology
                Biological cycle,population fluctuation,rhizophagous pests,Scarabaeoidea,white grubs,Ciclo biológico,coró,flutuação populacional,pragas rizófagas

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