Consulta: subjectFacets:"Varroasis"
Registros recuperados: 4
Data/hora: 16/06/2024 07:50:07

Varroa destructor mite in Africanized honeybee colonies Apis mellifera L. under royal jelly or honey production
Provedor de dados: 2
Autores: Santos, Pedro da Rosa; Wielewski, Priscila; Halak, Andre Luiz; Faquinello, Patrícia; Toledo, Vagner de Alencar Arnaut de.
 This study evaluated the level of invasion of Varroa mite into worker brood cells, the infestation rate on adult worker honeybees, total and effective reproduction rates of the mite in Africanized honeybee colonies under royal jelly or honey production. Invasion and infestation rates were not statistically different between honeybee colonies producing honey or royal jelly and the averages for these parameters were 5.79 and 8.54%, respectively. Colonies producing honey presented a higher (p &lt; 0.05) total and effective reproduction of Varroa than colonies producing royal jelly. There was a negative correlation between levels of invasion and infestation with minimum external temperature, relative humidity and rainfall. The variables month and season...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.04.05.00-4 Varroa infestation; Mite invasion rate in brood cells; Mite total reproduction; Mite effective reproduction; Varroasis; Honeybee queen selection.
Ano: 2015
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/26585

Efecto de Aceites Esenciales de Lavanda y Laurel sobre el Ácaro Varroa destructor Anderson &amp;amp; Truemann (Acari:Varroidae)
Provedor de dados: 113
Autores: Neira C.,Miguel; Heinsohn P.,Paula; Carrillo Ll.,Roberto; Báez M.,Andrea; Fuentealba A.,Juan.
La varroasis es considerada la más seria enfermedad parasitaria de las abejas (Apis mellifera L.) y es provocada por el ácaro Varroa destructor Anderson &amp;amp; Truemann. Una gran cantidad de productos han sido probados para el control de esta enfermedad parasitaria. Actualmente se han generado razas resistentes, problemas de contaminación de la miel y de otros productos de la colmena, debido al uso indiscriminado y reiterado de algunos productos contra este ácaro. La tendencia actual es el uso de productos naturales como parte de una estrategia de control integrado. Esta investigación tuvo como objetivo evaluar los efectos de los aceites esenciales extraídos de Lavandula officinalis Chaix y Laurelia sempervirens (Ruiz et Pav.) Tul. sobre el ácaro Varroa...
Tipo: Journal article
Palavras-chave: Varroa; Varroasis; Aceites esenciales; Lavandula officinalis; Laurelia sempervirens.
Ano: 2004
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072004000300003

Evaluation of Metarhizium anisopliae var. anisopliae Qu-M845 Isolate to Control Varroa destructor (Acari: Varroidae) in Laboratory and Field Trials
Provedor de dados: 117
Autores: Rodríguez,Marta; Gerding,Marcos; France,Andrés; Ceballos,Ricardo.
The effectiveness of the Metarhizium anisopliae (Metschinkoff) Qu-M845 isolate was evaluated in laboratory and field trials. It was previously selected for thermal resistance (at 30 and 35 ºC) and pathogenicity on Varroa destructor (Anderson and Trueman). In the laboratory, the first evaluations were carried out by spraying and increasing the concentration from zero to 10(8) conidia mL-1 on varroa adults. Lethal concentrations required for 50 and 90% mite mortality (LC50 and LC90) were 3.8 x 10(5) and 8 x 10(7) conidia mL-1, respectively (&amp;#967;2 = 2.03). In the autumn field trials, three application methods (doses of 5 x 10(10) conidia per hive) were evaluated. The treatments were: a) conidia stamped on filter paper, located on every second frame...
Tipo: Journal article
Palavras-chave: Biological control; Entomopathogenic fungi; Varroasis; Insect pathology.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400009

Selection of Entomopathogenic Fungi to Control Varroa destructor (Acari: Varroidae)
Provedor de dados: 117
Autores: Rodríguez,Marta; Gerding,Marcos; France,Andrés.
The aim of this work was select entomopathogenic fungi tolerant to temperatures inside the brood area of honey bees (Apis mellifera) for to control Varroa destructor. For this purpose, 50 Beauveria bassiana (Balsamo) Vuillemin and 48 Metarhizium anisopliae (Metschn.) Sorokin isolates were evaluated at 30 and 35 ºC. For each isolate, colony discs of 5 mm with mycelium were placed in the center of a Petri dish with Sabouraud dextrose agar (SDA) medium. The dishes were incubated at 30 and 35 °C, without light. Radial growth of each colony was measured daily. All the B. bassiana and M. anisopliae isolates presented a lineal growth rate at a temperature of 30 ºC. However, at 35 ºC, most of the isolates did not grow, except three B. bassiana and 14 M. anisopliae...
Tipo: Journal article
Palavras-chave: Biological control; Entomopathogenic fungi; Varroasis; Entomopathology.
Ano: 2009
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400008