Capacidade de resistência a altas e baixas temperaturas em operárias de Scaptotrigona postica (Latreille) (Hymenoptera, Apidae) durante os períodos de verão e inverno

Macieira, Oilton José Dias; Proni, Edson Aparecido

doi:10.1590/s0101-81752004000400025

Cited by 21 publications

(11 citation statements)

References 7 publications

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“…The altitudes from the orchards ranged from 59 to 966 m. Similarly to what was done in the present study, Pratissoli et al (2002) verified the collection of Trichogramma at different altitudes in Espirito Santo State, Brazil. In their work, in plantings located at lower altitudes (200 and 380 m), the average number of samples with parasitism were higher and the lowest indices were obtained in regions with altitudes between 750 and 1050 m. The characteristics of the collection points in orchards in Rio Grande do Sul State, Brazil may have provided conditions that interfered in the adaptability and, consequently, in the dispersion of Trichogramma strains in each agroenvironment, as it has occurred in different species (MACIEIRA & PRONI, 2004;FORREST & CHISHOLM, 2017;STUCKI et al, 2017).…”

Section: Resultsmentioning

confidence: 93%

Trichogramma Westwood, 1833 (Hymenoptera, Trichogrammatidae) collected in orchards in Rio Grande do Sul State, Brazil

Fragoso¹,

Araújo²,

Carvalho³

et al. 2021

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A coleta e a identificação do parasitoide de ovos Trichogramma Westwood, 1833 (Hymenoptera: Trichogrammatidae) consistem no primeiro passo para umaaplicação bem sucedida em campo. Isso porque, em um programa de controle biológico, é necessário selecionar as espécies de parasitoides mais adaptadasàs condições de cultivo e climáticas da região onde serão utilizadas. Portanto, o objetivo deste trabalho foi coletar Trichogramma em pomares no estado do RioGrande do Sul, visando identificá-lo ao nível das espécies pelo método morfológico e caracterizá-lo pelo método molecular da região ITS2 (espaço interno transcrito) de rDNA (ácido desoxirribonucleico ribossomal). A coleta foi realizada com armadilhas confeccionadas com tecido micro-tule, distribuídas aleatoriamente em pomares. A captura ocorreu em todos os pontos de coleta. A identificação resultou em Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) para todas as coletas. Os fragmentos de DNA presentes no gel de agarose estavam em torno de 500 pb.

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Section: Resultsmentioning

confidence: 93%

Trichogramma Westwood, 1833 (Hymenoptera, Trichogrammatidae) collected in orchards in Rio Grande do Sul State, Brazil

Fragoso¹,

Araújo²,

Carvalho³

et al. 2021

ABC

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“…In situations where this effort exceeds the bee capacity in the colony can present problems in its development, and also to abandon the beehive, or even lead to the swarm death (MACIEIRA & PRONI, 2004).…”

Section: Resultsmentioning

confidence: 99%

Internal ambience of beehives Apis mellifera with different colors and roofing materials in the sub middle of the São Francisco Valley

et al. 2015

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ABSTRACT:The current study aimed to evaluate the influence of three colors and two types of roofing materials under the internal temperature of bee colonies Apis mellifera. The experiment was conducted at the Agricultural Sciences Campus at the Federal University of Sao Francisco Valley located in Petrolina-PE, in November and December 2013, using 24 colonies housed in Langstroth hives. The experiment was a completely randomized factorial design (3x2) with three colors of box (blue, white, and traditional) and two types of cover (with and without the use of plaster) with six treatments and four replications. The internal temperature dates of the colonies were hourly recorded, during 24 hours, and surface temperatures were hourly recorded between 08h00 and 17h00. The highest values for surface and internal temperature were registered in the blue painted boxes without the use of plasterboard, and the blue painted boxes covered with plasterboard respectively. However, the lowest values were found in the white painted hives and hives that have not received the plasterboard. It is recommended to paint boxes with bright colors, and the use of plasterboard had no effect in reducing the internal temperature.

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“…In situations where the thermoregulatory effort required exceeds the capacity of worker bees, in the short or medium term, the colony may have developmental difficulties, may desert the hive or even die (MACIEIRA & PRONI, 2004).…”

Section: Introductionmentioning

confidence: 99%

Internal ambience of bee colonies submitted to strengthening management by adding broods

et al. 2013

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This study aimed to investigate the ideal brood area to be introduced for strengthening Apis mellifera colonies, considering variations in the hive's internal ambience. Therefore, eight colonies were equipped with data loggers for recording variations in temperature and humidity inside the hives. Then, these colonies were split in four treatments involving the swapping of four, three, two and one brood comb between strong and weak colonies. Growth in the amount of brood and food stores to the four colony strengthening treatments was assessed counting the comb cells to record changes in the brood and food area. The colonies tended to restore their normal thermoregulation within four hours after they had been manipulated and the hive cover had been closed, which quickly increased brood area in the receiving colonies. Results showed that adding up to three brood combs constitute an important alternative for strengthening Apis mellifera colonies because it did not interfere with nest thermoregulation, speeded up population growth in weak colonies and did not affect the development of strong colonies.KEYWORDS: colony homeostasis, thermal comfort, colony management. AMBIÊNCIA INTERNA DE COLÔNIAS DE ABELHAS SUBMETIDAS AO MANEJO DE FORTALECIMENTO POR ADIÇÃO DE CRIASRESUMO: Objetivou-se com este trabalho investigar qual área de cria deve ser adicionada para o fortalecimento de colônias de Apis mellifera, considerando-se as variações na ambiência interna das colônias. Para tanto, oito colônias foram equipadas com data loggers para registro da temperatura e da umidade no interior das colmeias. Em seguida, essas colônias foram dispostas em quatro tratamentos, envolvendo a troca de quatro, três, dois e um quadro com crias, entre colônias fortes e fracas. A evolução da quantidade de crias e de alimento nos quatro tratamentos de fortalecimento das colônias foi quantificada pela contagem de alvéolos, avaliando-se mudanças na área ocupada por crias e alimento. As colônias tenderam a retornar sua termorregulação em até 4 horas após a manipulação e o fechamento da tampa das colmeias, o que aumentou rapidamente a área de cria das colônias receptoras. Os resultados apontaram que a adição de até três quadros com crias constituiu uma alternativa importante para o fortalecimento de colônias de Apis mellifera, pois não interferiu na termorregulação do ninho, acelerou o crescimento populacional das colônias fracas e não afetou o desenvolvimento das colônias doadoras. PALAVRAS-CHAVE:homeostase apícola, conforto térmico, manejo de colônias.

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Capacidade de resistência a altas e baixas temperaturas em operárias de Scaptotrigona postica (Latreille) (Hymenoptera, Apidae) durante os períodos de verão e inverno

Cited by 21 publications

References 7 publications

Trichogramma Westwood, 1833 (Hymenoptera, Trichogrammatidae) collected in orchards in Rio Grande do Sul State, Brazil

Trichogramma Westwood, 1833 (Hymenoptera, Trichogrammatidae) collected in orchards in Rio Grande do Sul State, Brazil

Internal ambience of beehives Apis mellifera with different colors and roofing materials in the sub middle of the São Francisco Valley

Internal ambience of bee colonies submitted to strengthening management by adding broods

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