INVESTIGADORES
GENDE Liesel Brenda
artículos
Título:
Paenibacillus larvae Spore Determination on Adult Honey Bees and the Relationship with the Onset of Clinical Symptoms of American Foulbrood
Autor/es:
NATALIA JORGELINA FERNÁNDEZ; LIESEL BRENDA GENDE; MARTÍN JAVIER EGUARAS
Revista:
JOURNAL OF APICULTURAL RESEARCH
Editorial:
INT BEE RESEARCH ASSOC
Referencias:
Año: 2010 vol. 49 p. 287 - 289
ISSN:
0021-8839
Resumen:
American foulbrood (AFB), an infectious disease affecting the honey
bee Apis mellifera L., is caused by the spore-forming bacteriumApis mellifera L., is caused by the spore-forming bacterium
Paenibacillus larvae. Being able to kill larvae and pupae, AFB leaves
adult bees unaffected, which thus become asymptomatic carriers
(Lindström, 2008). Given the fact that AFB can only be detected
visually, the diagnosis of this disease is usually complex and late. The
development of a monitoring tool capable of detecting this disease
has therefore become critical. Several works on P. larvae spore
transmission and distribution at the colony and apiary level have been
published (Lindström et al., 2008; Lindström, 2008); yet none of them
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
transmission and distribution at the colony and apiary level have been
published (Lindström et al., 2008; Lindström, 2008); yet none of them
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
adult bees unaffected, which thus become asymptomatic carriers
(Lindström, 2008). Given the fact that AFB can only be detected
visually, the diagnosis of this disease is usually complex and late. The
development of a monitoring tool capable of detecting this disease
has therefore become critical. Several works on P. larvae spore
transmission and distribution at the colony and apiary level have been
published (Lindström et al., 2008; Lindström, 2008); yet none of them
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
transmission and distribution at the colony and apiary level have been
published (Lindström et al., 2008; Lindström, 2008); yet none of them
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
Being able to kill larvae and pupae, AFB leaves
adult bees unaffected, which thus become asymptomatic carriers
(Lindström, 2008). Given the fact that AFB can only be detected
visually, the diagnosis of this disease is usually complex and late. The
development of a monitoring tool capable of detecting this disease
has therefore become critical. Several works on P. larvae spore
transmission and distribution at the colony and apiary level have been
published (Lindström et al., 2008; Lindström, 2008); yet none of them
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
transmission and distribution at the colony and apiary level have been
published (Lindström et al., 2008; Lindström, 2008); yet none of them
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
P. larvae spore
transmission and distribution at the colony and apiary level have been
published (Lindström et al., 2008; Lindström, 2008); yet none of them
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.
et al., 2008; Lindström, 2008); yet none of them
have focussed on the number of spores in relation to the degree of
disease, and so allowed the establishment of a damage threshold
regarding the spores: bee ratio. Studies of such a relationship could,
however, become useful monitoring tools, capable of assessing the
sanitary behaviour of the colonies based on the spore loads
registered, and so prevent American foulbrood development. The aim
of our study was to establish a relationship between the number of
spores per bee and the extent of disease development in the colony.
It was further to establish a minimum number of spores (threshold)
from which the clinical symptoms of AFB start to appear in the
colonies.