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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...
Monitoreo nacional de la nosemosis - resultados previos del proyecto portugal, ...
Pires, Sância; Murilhas, António; Almeida, Paulo; Valério, MariaConsidering the growing number of reports implicating Nosema ceranae in colony morbidity/mortality, it is relevant to clarify the current epidemiology of Nosemosis in Portugal beekeeping context, pinpointing the etiologic agents to the species level and, eventually, identifying possible intra-specific types. About 2% of the registered Portuguese apiaries were sampled in two consecutive years (2011 and 2012)...
Livro Verde dos Montados
Lauw, Alexandra; Gonçalves-Ferreira, Alfredo; Gomes, Alberto; Moreira, Ana Cristina; Fonseca, Ana; Azul, Anabela; Mira, António; Murilhas, AntónioO Livro Verde dos Montados apresenta diversos objectivos que se interligam: Em primeiro lugar, o Livro Verde pretende reunir e sistematizar, de uma forma simples e acessível ao público, o conhecimento produzido em Portugal pelos investigadores e técnicos de várias instituições de investigação ou de gestão que estudam o Montado. Assume-se como uma oportunidade de caracterizar o sistema tendo em conta as suas vár...
PBN - Portugal, beekeeping and nosema
Pires, Sância; Almeida, Paulo R.; Murilhas, António; Valério, Maria JoséThis work aims at carrying out a survey to assess the prevalence of Nosema sp in Portugal. There has been an increasing number of positively lab-identified cases of Nosema in Bee Pathology Laboratories across the country in recent years. However, the optical microscopy methods that have been used are unreliable to identify the species of Nosema. Considering the growing number of reports implicating Nosema cera...
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...
A review of methods for discrimination of honey bee populations as applied to E...
Bouga, Maria; Alaux, Cedric; Bienkowska, Malgorzata; Büchler, Ralph; Carreck, Norman; Cauia, Eliza; Chlebo, Robert; Dahle, Bjorn; Dall'Olio, RaffaeleHere, scientists from 19 European countries, most of them collaborating in Working Group 4: “Diversity and Vitality” of COST Action FA 0803 “Prevention of honey bee COlony LOSSes” (COLOSS), review the methodology applied in each country for discriminating between honey bee populations. Morphometric analyses (classical and geometric) and different molecular markers have been applied. Even if the approach has bee...
Queen rearing and selection practices and their impact on the genetic diversity...
Bouga, Maria; Arnold, Gerard; Bienkowska, Malgorzata; Büchler, Ralph; Garnery, Lionel; Ivanova, Evgeniya; De Jong, David; De la Rúa, Pilar; Kence, MeralThe Apimondia working group on honey bee diversity and fitness (AWG 7) was created on October 25, 2010 as a Scientific Working Group of Apimondia. The aim of this AWG is to collect information on honey bee queen rearing practices, and examine their impact on the genetic variability and general health of honey bee colonies. The AWG consists of 23 members from 16 different countries. The world wide survey being c...
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