摘要:

SUMMARYA total of 457 diploid larvae from eggs laid in worker cells by inbred queens were hatched in an incubator. They were then transferred into drone cells and put into queenless colonies, with a control group of 75 haploid drone larvae. Half the diploid larvae were eaten during the first few hours after transference, leaving 48% surviving until the next day, compared with 92% haploids. The bees sealed 65% of the cells containing haploids and 19% with diploids, of which 2·8% were drones. After emergence one drone was found to be diploid.Since diploid drone larvae are eaten whether they are in drone or worker cells, the controlling factor is not that they are in the‘wrong’type of cell for their sex.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100106

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

SUMMARYThe author has previously published four non-Linnean classifications for honeybees, all based on 15 characters of the worker forewing. This paper reports an attempt to test the accuracy and usefulness of these classifications by inferring the geographical origin of completely unknown, disarticulated wings. Twenty samples, each containing 3–5 worker forewings representing various natural honeybee populations, were sent from Austria by Dr. F. Ruttner; the author attempted to recognize 18 of these wing samples, and 16 are considered to have been correctly identified. The principles used in recognizing and designating honeybee specimens in non-Linnean taxonomy are fully explained in the present paper, which includes two new discriminant diagrams.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100107

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

SUMMARYThe increased pollen collection by colonies fed sugar syrup is mostly due to changes in the behaviour of individual foragers. When sugar syrup is provided inside the hive, most of the bees that collect it have not foraged before; they are at that stage of their lives when they would normally receive nectar loads from foragers, and their absence from the entrance area probably discourages the foragers from collecting nectar.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100108

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

SUMMARYThe disaccharides maltose, isomaltose, gentiobiose, trehalose and neotrehalose were isolated from royal jelly and characterized as crystalline octaacetates. Sucrose and turanose were obtained in the crystalline form. Sophorose and leucrose were tentatively identified.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100109

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

SUMMARYA technique is described by which 75–100 honeybees can be marked within 5 minutes. It utilizes the principle of the piston-equipped marking tube. The bees are immobilized against a wire screen in such a way that paint marks can be applied to the exposed dorsal surface of the thorax.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100110

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

SUMMARYWorker honeybees tolerated plural worker brood in some cells for the first 4 days of larval life. No cell was sealed with more than one larva present, and the development period of remaining larvae fell within the range for normal brood.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100111

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

SUMMARYNine strains ofStreptococcus pluton(White) were isolated at Rothamsted from larvae with European foul brood from different parts of the world; all were very sensitive to erythromycin. The cultures isolated in Switzerland from bees with European foul brood, which are reported to resist erythromycin, are very atypical, or more probably not 5.plutonbut secondary invaders.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100112

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

SUMMARYOf 19 colonies infested withAcarapis woodiin spring 1963, 9 were requeened with queens from North America; 2 of these became severely infested in 1963 and one in 1964. Of the 10 colonies left with English queens, one became severely infested in 1964. Infestation declined or remained slight in all the remaining colonies.A. woodispread quickest in late summer in American bees, as it does in English ones. Severely infested colonies of both American and English bees appeared normal until their death in late winter.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100113

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor

摘要:

SUMMARYNormal colonies of bees given a supply of empty drone combs as required during the active season (Treated group) produced significantly more drone brood than Control colonies in which the amount of drone comb was severely restricted in the spring. A natural limit was fairly soon reached, however, and the maximum amount did not exceed about 2 580 sq. cm. in any colony. (In a previous year Treated colonies given only one drone comb also produced significantly more drone brood than Control colonies with no added drone comb.) Fewer drone cells were built on worker combs in the Treated colonies than in the Controls.Worker brood amounts and honey yields were not significantly less in Treated than in Control colonies, nor was there an increased tendency towards queen rearing in the Treated groups. Allowing colonies to rear drones freely would therefore appear to have no detrimental effect on their economic performance, and the need to restrict drone rearing as a beekeeping practice may be questioned.

ISSN:0021-8839    

DOI:10.1080/00218839.1965.11100114

出版商:Taylor&Francis    

年代:1965

数据来源: Taylor