Larval Honey Bee Response to Various Doses of Bacillus larvae Spores1

Hoage, Terrell R.; Rothenbuhler, Walter C.

doi:10.1093/jee/59.1.42

Cited by 29 publications

(19 citation statements)

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“…From feeding experiments, we know that very high spore levels must be fed to colonies to produce clinical symptoms of AFB (Hansen et al, 1988). Large numbers of spores need to be in the colony to produce infection, although individual young larvae may succumb to disease from low spore doses (Hoage and Rothenbuhler, 1966). Only strong colonies produce daughter colonies and as colonies are weakened by AFB, they will be less likely to swarm, thus lowering the opportunity for vertical parasite transmission.…”

Section: American Foulbroodmentioning

confidence: 99%

Implications of horizontal and vertical pathogen transmission for honey bee epidemiology

2001

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Section: American Foulbroodmentioning

confidence: 99%

Implications of horizontal and vertical pathogen transmission for honey bee epidemiology

2001

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“…The susceptibility of honey bee larvae has been further studied [2,13,16,23] and shown to be associated with the genetic constitution of the bees. In these studies and in the studies of Woodrow [30,31 ] the inoculated larvae were nursed by the bees in the colonies.…”

Section: Introductionmentioning

confidence: 99%

Response of in vitro reared honey bee larvae to various doses of Paenibacillus larvae larvae spores

Brødsgaard¹,

Ritter²,

Hansen³

1998

Apidologie

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-The relationship between the number of Paenibacillus larvae larvae spores fed individually to 24-28, 48-52 and 72-76 h old Apis mellifera ligustica larvae and the number of larvae dying from the P. l. larvae infection was investigated as well as the effect of sublethal infection with P. l. larvae on larval development time and adult weight. The larvae were laboratory reared, thus, excluding the influence of nurse bees. The results show that larvae 24-28 h old are most susceptible to infection with P. l. larvae with a clear dose-response relationship (LD 50 = 8.49). Older larvae become more and more resistant to infection with P. l. larvae so that no significant dose-mortality relationship exists in the 48-52 and 72-76 h age groups. Furthermore, a significant negative correlation exists between the development time and emergence weight for the adult bees in both the non-inoculated group and the inoculated group. There was no difference in development time between non-inoculated larvae and those that survived the inoculation. © Inra/DIB/AGIB/Elsevier, Paris Apis mellifera ligustica / American foulbrood / Paenibacillus larvae larvae / LD 50 / in vitro rearing

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“…Most data deal with susceptibility differences among laboratory populations of insect pest species to viral (Martignoni and Schmid, 1961; Klein and Podoler, 1978) and bacterial pathogens (Harvey and Howell, 1965;Hoage and Rothenbuhler, 1966;Kinsinger and McGaughey, 1979;Georghiou et al, 1983). Among non-pest species, extensive studies have been conducted on resistance to viral pathogens among strains of Bombyx mori L (Watanabe, 1967;Briese, 1981), and 3 reports describe resistance to the "hairless-black syndrome" in honey bees (Bailey, 1965;Kulincevic and Rothenbuhler, 1975;Rinderer and Green, 1976).…”

Section: Introductionmentioning

confidence: 99%

Chalkbrood (Ascosphaera aggregata) resistance in the leafcutting bee (Megachile rotundata). I. Challenge of selected lines

Stephen

Fichter

1990

Apidologie

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Summary — Twenty-nine cell series of the leafcutting bee, Megachile rotundata (Fabr), each containing 5 or more healthy larvae, no chalkbrood (Ascosphaera aggregata Skou) and no pollen masses were isolated from a population with over 36% chalkbrood. This selected subpopulation was split and isolated for 4 and 6 generations before being challenged by forcing the females to nest in heavily contaminated media, or by weekly dustings with approximately 175 x 10 8 A aggregata spores. The incidence of chalkbrood in both challenged lines was markedly lower than that of the wildtype, and comparable to that of the selected lines, suggesting a genetic component for resistance in both lines. The very low incidence of pollen masses (dead eggs or early instar larvae) in the selected lines throughout the 4 yrs of the study indicates that this trait may also be genetically mediated, either linked to, or independent of disease resistance.

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Larval Honey Bee Response to Various Doses of Bacillus larvae Spores1

Cited by 29 publications

References 0 publications

Implications of horizontal and vertical pathogen transmission for honey bee epidemiology

Implications of horizontal and vertical pathogen transmission for honey bee epidemiology

Response of in vitro reared honey bee larvae to various doses of Paenibacillus larvae larvae spores

Chalkbrood (Ascosphaera aggregata) resistance in the leafcutting bee (Megachile rotundata). I. Challenge of selected lines

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