scholarly journals An Overview on Honeybee Colony Losses in Buenos Aires Province, Argentina

Sociobiology ◽  
2019 ◽  
Vol 66 (1) ◽  
pp. 75 ◽  
Author(s):  
Maria Laura Genchi Garcia ◽  
Santiago Plischuk ◽  
Claudio Marcelo Bravi ◽  
Francisco Jose Reynaldi
Keyword(s):  
Honey Bees ◽  
Buenos Aires ◽  
Buenos Aires Province ◽  
Colony Collapse Disorder ◽  
Colony Losses ◽  
High Prevalence ◽  
Different Types ◽  
Colony Collapse ◽  
Honeybee Colony

Honey bees (Apis mellifera) are essential for the ecosystem, so their loss threatens biodiversity and agriculture. Several factors have been proposed as possible causes of both massive losses and Colony Collapse Disorder. In August 2017 episodes of colony losses were registered in General Alvear, Buenos Aires province. The aim of the present study was to find possible causes of these events. The samples were screened for presence of several pathogens and the determination of maternal lineages was also performed. Seven out of ten colonies were positive for pathogens, but there was no high prevalence of any of them. It will be necessary to carry out a standardization of studies, and delineate boundaries that allow comparing cases in order to discriminate different types of mortality of colonies that occur worldwide.

scholarly journals Behavioral modulation of the coexistence between Apis melifera and Varroa destructor: A defense against colony collapse?

2015 ◽  
Author(s):  
Joyce F Santos ◽  
Flávio C Coelho ◽  
Pierre-Alexandre J Bliman
Keyword(s):  
Honey Bees ◽  
Varroa Destructor ◽  
Colony Collapse Disorder ◽  
Hygienic Behavior ◽  
Colony Losses ◽  
Africanized Honey Bee ◽  
Multiple Factors ◽  
Colony Collapse ◽  
Different Parts

Colony Collapse Disorder has become a global problem for beekeepers and for the crops which depend on bee polination. Multiple factors are known to increase the risk of colony colapse, and the ectoparasitic mite Varroa destructor that parasitizes honey bees (Apis melifera) is among the main threats to colony health. Although this mite is unlikely to, by itself, cause the collapse of hives, it plays an important role as it is a vector for many viral diseases. Such diseases are among the likely causes for Colony Collapse Disorder. The effects of V. destructor infestation are disparate in different parts of the world. Greater morbidity - in the form of colony losses - has been reported in colonies of European honey bees (EHB) in Europe, Asia and North America. However, this mite has been present in Brasil for many years and yet there are no reports of Africanized honey bee (AHB) colonies losses. Studies carried out in Mexico showed that some resistance behaviors to the mite - especially grooming and hygienic behavior - appear to be different in each subspecies. Could those difference in behaviors explain why the AHB are less susceptible to Colony Collapse Disorder? In order to answer this question, we propose a mathematical model of the coexistence dynamics of these two species, the bee and the mite, to analyze the role of resistance behaviors in the overall health of the colony, and, as a consequence, its ability to face epidemiological challenges.

scholarly journals Behavioral modulation of the coexistence between Apis melifera and Varroa destructor: A defense against colony collapse?

2015 ◽  
Author(s):  
Joyce F Santos ◽  
Flávio C Coelho ◽  
Pierre-Alexandre J Bliman
Keyword(s):  
Honey Bees ◽  
Varroa Destructor ◽  
Colony Collapse Disorder ◽  
Hygienic Behavior ◽  
Colony Losses ◽  
Africanized Honey Bee ◽  
Multiple Factors ◽  
Colony Collapse ◽  
Different Parts

Colony Collapse Disorder has become a global problem for beekeepers and for the crops which depend on bee polination. Multiple factors are known to increase the risk of colony colapse, and the ectoparasitic mite Varroa destructor that parasitizes honey bees (Apis melifera) is among the main threats to colony health. Although this mite is unlikely to, by itself, cause the collapse of hives, it plays an important role as it is a vector for many viral diseases. Such diseases are among the likely causes for Colony Collapse Disorder. The effects of V. destructor infestation are disparate in different parts of the world. Greater morbidity - in the form of colony losses - has been reported in colonies of European honey bees (EHB) in Europe, Asia and North America. However, this mite has been present in Brasil for many years and yet there are no reports of Africanized honey bee (AHB) colonies losses. Studies carried out in Mexico showed that some resistance behaviors to the mite - especially grooming and hygienic behavior - appear to be different in each subspecies. Could those difference in behaviors explain why the AHB are less susceptible to Colony Collapse Disorder? In order to answer this question, we propose a mathematical model of the coexistence dynamics of these two species, the bee and the mite, to analyze the role of resistance behaviors in the overall health of the colony, and, as a consequence, its ability to face epidemiological challenges.

Mitochondrial Dysfunction: A Plausible Pathway for Honeybee Colony Collapse Disorder (CCD)

2020 ◽  
Vol 7 (4) ◽  
pp. 254-258
Author(s):  
Chensheng Lu ◽  
Chi-Hsuan Chang ◽  
Bernardo Lemos ◽  
Quan Zhang ◽  
David MacIntosh
Keyword(s):  
Mitochondrial Dysfunction ◽  
Colony Collapse Disorder ◽  
Colony Collapse ◽  
Honeybee Colony

scholarly journals Dominance of Nosema ceranae in honey bees in the Balkan countries in the absence of symptoms of colony collapse disorder

Apidologie ◽  
2011 ◽  
Vol 42 (1) ◽  
pp. 49-58 ◽  
Author(s):  
Jevrosima Stevanovic ◽  
Zoran Stanimirovic ◽  
Elke Genersch ◽  
Sanja R. Kovacevic ◽  
Jovan Ljubenkovic ◽  
...  
Keyword(s):  
Honey Bees ◽  
Nosema Ceranae ◽  
Colony Collapse Disorder ◽  
Balkan Countries ◽  
Colony Collapse

scholarly journals Insect Marks on Bones from La Guillerma Archaeological Locality (Salado River Depression, Buenos Aires, Argentina)

Quaternary ◽  
2021 ◽  
Vol 4 (4) ◽  
pp. 45
Author(s):  
Paula D. Escosteguy ◽  
Alejandro E. Fernandez ◽  
María Isabel González
Keyword(s):  
Detailed Analysis ◽  
Buenos Aires ◽  
Total Sample ◽  
Archaeological Sites ◽  
Buenos Aires Province ◽  
Faunal Remains ◽  
Faunal Assemblage ◽  
Different Types ◽  
Salado River ◽  
Bone Remains

The La Guillerma archaeological locality is located in the northeast sector of Buenos Aires province (Argentina). Two of its sites (LG1 and LG5), dated between ca. 1400- and 600-years BP, have a great amount of faunal remains including deer, rodents, fish and small birds that are subjected to taphonomic agents and processes (e.g., weathering, manganese, roots). Previous studies have shown osteophagic behaviour in different insects (e.g., Coleoptera, Blattodea). In this paper, we evaluate their incidence on La Guillerma faunal assemblage. We performed an analysis on marks that were identified in bone remains of various taxa and applied the criteria for identifying bone alteration by insects (i.e., by measuring each trace and comparing them with the types of insect marks described in the literature). Fifteen specimens (LG1 = 6 and LG5 = 9) exhibited different types of modifications (e.g., pits with striae in base, pits with emanating striae, striations) that are related to the action of insects. Although the proportion of affected bones is low in relation to the total sample, we highlight our study as the first detailed analysis of insect marks on archaeological bones from Argentina. We also emphasize the significance of addressing insect-produced modifications on Argentinean archaeological sites.

Deformed wing virus type a and b in managed honeybee colonies of Argentina

2020 ◽  
Vol 111 (1) ◽  
pp. 100-110 ◽  
Author(s):  
C. Brasesco ◽  
S. Quintana ◽  
V. Di Gerónimo ◽  
M. L. Genchi García ◽  
G. Sguazza ◽  
...  
Keyword(s):  
Buenos Aires ◽  
Buenos Aires Province ◽  
Virus Species ◽  
Santa Fe ◽  
Deformed Wing Virus ◽  
Future Studies ◽  
Rio Negro ◽  
High Prevalence ◽  
Pcr Products ◽  
The Impact

AbstractApis mellifera is infected by more than 24 virus species worldwide, mainly positive-sense, single-stranded RNA viruses of the Dicistroviridae and Iflaviridae families. Among the viruses that infect honey bees, Deformed wing virus is the most prevalent and is present as three master variants DWV-A, B, and C. Given that the ectoparasitic mite Varroa destructor vectors these virus variants, recombination events between them are expected, and variants and their recombinants can co-exist in mites and honeybees at the same time. In this study, we detect, through RT-qPCR, the presence of DWV-A and B in the same samples of adult bees from colonies of Argentina. Total RNA was extracted from pools of ten adult bees from 45 apiaries distributed across the main beekeeping Provinces of Argentina (Buenos Aires, Santa Fe, Córdoba, Santiago del Estero, Río Negro, and Mendoza); then RT-qPCR reactions were performed to detect DWV-A and B, with specific primer pairs. After the amplifications, PCR products (204 and 660 bp amplicons for DWV-B, and ~250 bp for DWV-A) were purified and sequenced to verify that they corresponded to reported sequences, analyzing them using the Blast software. Of the 45 samples analyzed by RT-qPCR, over 90% were infected with DWV-A and 47% were also positive for DWV-B, where it was found in high prevalence specifically in colonies of A. mellifera of the Buenos Aires Province. Future studies will determine the impact of this type of the virus and its ability to recombine with the other DWV types in the apiaries of our country.

scholarly journals Genetic Analysis of Israel Acute Paralysis Virus: Distinct Clusters Are Circulating in the United States

2008 ◽  
Vol 82 (13) ◽  
pp. 6209-6217 ◽  
Author(s):  
G. Palacios ◽  
J. Hui ◽  
P. L. Quan ◽  
A. Kalkstein ◽  
K. S. Honkavuori ◽  
...  
Keyword(s):  
United States ◽  
Phylogenetic Analysis ◽  
Honey Bees ◽  
The United States ◽  
Colony Collapse Disorder ◽  
Coding Sequences ◽  
Colony Collapse ◽  
Pcr Assays ◽  
Paralysis Virus ◽  
Israel Acute Paralysis Virus

ABSTRACT Israel acute paralysis virus (IAPV) is associated with colony collapse disorder of honey bees. Nonetheless, its role in the pathogenesis of the disorder and its geographic distribution are unclear. Here, we report phylogenetic analysis of IAPV obtained from bees in the United States, Canada, Australia, and Israel and the establishment of diagnostic real-time PCR assays for IAPV detection. Our data indicate the existence of at least three distinct IAPV lineages, two of them circulating in the United States. Analysis of representatives from each proposed lineage suggested the possibility of recombination events and revealed differences in coding sequences that may have implications for virulence.

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