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Nosema distribution across Portugal. Results from the first nationwide survey (...
Pires, Sância; Murilhas, António; Russo, Paulo; Valério, Maria; Gonçalves, ManuelA nationwide field sampling exercise was launched in 2011, to address mounting anecdotal evidence of atypically high honey bee colony mortalities of unexplained origin occurring throughout Portugal. The first approach was to contact 662 beekeepers (≈ 4% of the registered Portuguese beekeepers), via telephone interviews with a view to formulating an 'educated guess' regarding the cases where Nosema apis / Nosema...
Nosema distribution across Portugal. Results from the first nationwide survey (...
Pires, Sância; Murilhas, António; Russo, Paulo; Valério, Maria; Gonçalves, ManuelNosemosis is not a recent pathology in Portugal. The etiological agent traditionally associated with it, the microsporidian Nosema apis, is well characterized and was not causing considerable economic damage to the Portuguese apiculture. However, the recent arrival, to the ‘European’ honeybee sphere, of a ‘new’ Nosema species (N. ceranae) has been recurrently considered a relevant contribution to the ‘Colony Co...
Main reasons for honey bee colony mortality in Portugal. A snapshot of beekeepe...
Pires, Sância; Murilhas, António; Russo, Paulo; Valério, Maria; Gonçalves, ManuelTo investigate claims of abnormally high honey bee colony mortality in Portugal during 2011, a survey was carried out via telephone interviews. It included 662 (≈ 4%) registered Portuguese beekeepers and followed the basic 'Coloss' questionnaire. Interviewees were selected accounting for total numbers of colonies and the geographical distribution of their apiaries across the country. The 'sampling grid' was set...
Main reasons for honey bee colony mortality in Portugal. A snapshot of beekeepe...
Pires, Sância; Murilhas, António; Russo, Paulo; Valério, Maria; Gonçalves, ManuelSince winter 2006, extensive honey bee colony losses with distinctive features were first reported in the USA ( ‘Colony Collapse Disorder’, CCD). Global research over the past few years attempting to pin point CCD’s most likely causes, recurrently pointed out that no single factor is universally responsible for this disorder. Nevertheless, stressors e.g. the Varroa mite, some ‘new generation’ pesticides, an eve...
Investigação em apicultura em Portugal: Portugal, apicultura e Nosema
Pires, Sância; Murilhas, António; Russo, Paulo; Valério, Maria JoséA Nosemose é uma doença das abelhas melíferas (Apis mellijera L.), cujo agente etiológico tradicional, (o microsporídio unicelular Nosema apis Zander), foi identificado há cerca de cem anos (Paxton, 2010). Considerada uma das patologias mais predominante e prejudicial para as abelhas ocidentais, tem sido intensamente estudada (apesar de nem sempre ser evidente, face a uma sintomatologia relativamente inaparente...
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