Infertility of Varroa jacobsoni females after invasion into Apis mellifera worker brood as a tolerance factor against varroatosis
The fertility of Varroa jacobsoni females was studied in worker brood invaded by a single mite. Africanized and European colonies of Apis mellifera were used as sources to sample capped brood cells in a tropical area of Brazil and, in addition, Carnolian colonies were sampled in Germany. In the Afr...
Gorde:
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| Formatua: | Article ou chapitre numérique |
| Hizkuntza: | Anglais |
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EDP Sciences
1994
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| Sarrera elektronikoa: | Accès Université d'Orléans et IFPM Accès INSA CVL |
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edpsciences-10.1051_apido:19940407 |
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edpsciences |
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edpsciences-10.1051_apido:19940407Infertility of Varroa jacobsoni females after invasion into Apis mellifera worker brood as a tolerance factor against varroatosisP. RosenkranzW. Engels The fertility of Varroa jacobsoni females was studied in worker brood invaded by a single mite. Africanized and European colonies of Apis mellifera were used as sources to sample capped brood cells in a tropical area of Brazil and, in addition, Carnolian colonies were sampled in Germany. In the Africanized bees over 40% of the female mites in worker brood were infertile, whereas in European bees only 10-20% infertile Varroa females were found. These differences do not depend on broodnest or ambient temperatures. If a female mite was fertile, then the fecundity, measured as the mean number of eggs produced, was the same, irrespective of the host honey bee race. The low Varroa fertility in worker brood of the Africanized bees resembles the situation known from the original host species, Apis cerana. Since host-dependent infertility evidently has a strong influence on the population dynamics of this parasite, it should be properly considered in future selection and breeding efforts in order to produce European bee strains tolerant against varroatosis.10.1051/apido:199404071994EDP Scienceshttps://doi.org/10.1051/apido:19940407https://www.apidologie.org/10.1051/apido:19940407/pdfTexten |
| institution |
INSA |
| collection |
EDP Sciences |
| language |
Anglais |
| format |
Article ou chapitre numérique |
| building |
0/Bibliothèque numérique/ 1/Bibliothèque numérique/EDP Sciences/ |
| description |
The fertility of Varroa jacobsoni females was studied in worker brood invaded by a single mite. Africanized and European colonies of Apis mellifera were used as sources to sample capped brood cells in a tropical area of Brazil and, in addition, Carnolian colonies were sampled in Germany. In the Africanized bees over 40% of the female mites in worker brood were infertile, whereas in European bees only 10-20% infertile Varroa females were found. These differences do not depend on broodnest or ambient temperatures. If a female mite was fertile, then the fecundity, measured as the mean number of eggs produced, was the same, irrespective of the host honey bee race. The low Varroa fertility in worker brood of the Africanized bees resembles the situation known from the original host species, Apis cerana. Since host-dependent infertility evidently has a strong influence on the population dynamics of this parasite, it should be properly considered in future selection and breeding efforts in order to produce European bee strains tolerant against varroatosis. |
| author |
P. Rosenkranz W. Engels |
| spellingShingle |
P. Rosenkranz W. Engels Infertility of Varroa jacobsoni females after invasion into Apis mellifera worker brood as a tolerance factor against varroatosis |
| author_facet |
P. Rosenkranz W. Engels |
| author_sort |
P. Rosenkranz |
| title |
Infertility of Varroa jacobsoni females after invasion into Apis mellifera worker brood as a tolerance factor against varroatosis |
| title_short |
Infertility of Varroa jacobsoni females after invasion into Apis mellifera worker brood as a tolerance factor against varroatosis |
| title_full |
Infertility of Varroa jacobsoni females after invasion into Apis mellifera worker brood as a tolerance factor against varroatosis |
| title_fullStr |
Infertility of Varroa jacobsoni females after invasion into Apis mellifera worker brood as a tolerance factor against varroatosis |
| title_full_unstemmed |
Infertility of Varroa jacobsoni females after invasion into Apis mellifera worker brood as a tolerance factor against varroatosis |
| title_sort |
infertility of varroa jacobsoni females after invasion into apis mellifera worker brood as a tolerance factor against varroatosis |
| publisher |
EDP Sciences |
| publishDate |
1994 |
| url |
https://ezproxy.univ-orleans.fr/login?url=https://doi.org/10.1051/apido:19940407 https://ezproxy.insa-cvl.fr/login?url=https://doi.org/10.1051/apido:19940407 |
| _version_ |
1877285105244831744 |