Wyniki wyszukiwania

1

A method of classifying honey bee races by their body characters

100%

Cermak K., Kaspar F.

Pszczelnicze Zeszyty Naukowe

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2000

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tom 44

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nr 2

2

Study on an easy method of hygienic behaviour evaluation in honey bee

75%

Olszewski K., Paleolog J.

Medycyna Weterynaryjna

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2007

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tom 63

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nr 02

165-166

The aim of research was the assessent of the hygienic behaviour of worker bees. The hygienic behaviour was assessed by means of two test types: the traditional needle test and a test proposed by the authors that consisted in measuring the removal rate of cardboard pieces. The experiments were conducted over three seasons and comprised a total number of 60 colonies. It was proved that the cardboard removal test may replace the needle test in the selection process of bees resistant to brood diseases, but primarily in those bees that have a good expression of hygienic behaviour. The best test results are to be expected in tests which last for 24 hours.

3

Influence of age of workers in mating nuclei honeybee [Apis mellifera] queens

75%

Czekonska K., Tofilski A., Klepacz J.

Electronic Journal of Polish Agricultural Universities. Series Biology

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2003

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tom 06

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nr 2

Virgin queens were introduced into mating nuclei containing workers of different ages. The study verified whether workers younger than 8 days, comprising the younger group, are more suitable for mating nuclei than workers older than 10 days, comprising the older group. In both groups, 7 (35%) queens were lost during mating flights. The time from introduction of queens into mating nuclei to the start of egg laying in mating nuclei with younger and older workers was 13.69 and 13.73 days, respectively. Two queens in mating nuclei with older workers did not start egg laying before the 20th day when the experiment was terminated. No influence of age of workers in mating nuclei on the performance of honeybee queens was found.

4

Utilization of protein in pollen load and bee bread by worker bees

75%

Szymas B., Baryczko M., Lisiewicz M.

Animal Science. Scientific Papers of Agricultural University of Poznan

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2002

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tom 04

5

Reproductive strategy of Nosema apis in honey bee workers with different life expectancies

75%

Czekonska K., Woyciechowski M.

Pszczelnicze Zeszyty Naukowe

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2000

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tom 44

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nr 2

6

Effect of temperature on Nosema apis in honey bee workers infected at different ages

75%

Czekonska K.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 2

7

Risk-taking and foraging strategy in honey bee workers collecting nectar and water

75%

Woyciechowski M.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 2

8

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Can wax moth be a vector of varroa disease ?

75%

Jedruszuk A., Van Laere O., Wael L.

Bulletin of the Veterinary Institute in Puławy

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1994

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tom 38

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nr 1

9

Some factors influencing the results of the cage tests of a life span and food intake in Apis Mellifera workers

75%

Paleolog J., Borsuk G., Olszewski K.

Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica

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2003

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tom 21

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nr 2

10

Total haemocyte counts in haemolymph of adult worker honey bees [Apis mellifera L.] from spring-summer and autumn-winter generations

63%

Jedruszuk A.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 2

11

Age-dependence of metabolic activity of haemocytes in haemolymph of adult worker honey bees from spring-summer generation

63%

Jedruszuk A.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 2

12

Studies on the worker bee response to sounds under laboratory conditions

63%

Rybak M., Muszynska J.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 1

13

The influence of differential food on cells of haemolymph in adult worker honey bees Apis mellifera L.

63%

Jedruszuk A., Szymas B.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 2

14

Differentiation of thoracic temperatures of honey bee workers [Apis mellifera] in the capped brood region of a colony

63%

Bujok B., Kleinhenz M., Fuchs S., Tautz J.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 2

15

The workers' [Apis mellifera carnica Pollm.] response with proboscis extension to the odour of queen extract

63%

Skirkevicius A., Blazyte-Cereskiene L.

Journal of Apicultural Science

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2004

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tom 48

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nr 1

16

Screening of differentially expressed genes induced by water-soluble extracts from pollen during honeybee caste determination

51%

Zhou B., Ye M. H., Zhang K., Wu Y. W., Ding J. T.

Journal of Animal and Feed Sciences

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2010

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tom 19

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nr 2

292-306

In order to screen differentially expressed genes during caste differentiation induced by pollen, larvae of Apis mellifer ligustica were developed in an incubator under controlled temperature and relative humidity until emergence. Worker bee morphology was induced by addition of water-soluble extracts from pollen in larval diets. After all of the developmental periods, the external characters and developmental degree of ovaries were evaluated to confirm the caste of new adults. Transcripts from larvae of developing queens and workers were profiled by differential-display RT-PCR analysis and differentially expressed fragments were reconfirmed by dot-blot assay. Our results showed that caste differentiation was triggered by the intake of pollen extracts. Six transcript-derived fragments were isolated and three of them are reported for the first time. We conclude that differential display is a feasible approach to identifying differentially expressed genes. The identification of up-regulated caste-differentiation-related genes provided interesting clues about the activation of biochemical steps relevant to this progress.

17

Age of worker bees performing hygienic behaviour in a honeybee colony

51%

Panasiuk B., Skowronek W., Bienkowska M., Gerula D., Wegrzynowicz P.

Journal of Apicultural Science

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2010

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tom 54

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nr 2

18

The influence of queen pheromones, environment factors, genotypes and their interactions on length of life of caged workers in laboratory tests in bees

51%

Paleolog J., Wilczynska R.

Pszczelnicze Zeszyty Naukowe

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1998

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tom 42

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nr 2

19

A rare case of overdominance in defensive behaviour of workers in honey bee colonies

51%

Borsuk G., Paleolog J.

Journal of Apicultural Science

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2005

|

tom 49

|

nr 1

Ograniczanie wyników

A method of classifying honey bee races by their body characters

Study on an easy method of hygienic behaviour evaluation in honey bee

Influence of age of workers in mating nuclei honeybee [Apis mellifera] queens

Utilization of protein in pollen load and bee bread by worker bees

Reproductive strategy of Nosema apis in honey bee workers with different life expectancies

Effect of temperature on Nosema apis in honey bee workers infected at different ages

Risk-taking and foraging strategy in honey bee workers collecting nectar and water

Can wax moth be a vector of varroa disease ?

Some factors influencing the results of the cage tests of a life span and food intake in Apis Mellifera workers

Total haemocyte counts in haemolymph of adult worker honey bees [Apis mellifera L.] from spring-summer and autumn-winter generations

Age-dependence of metabolic activity of haemocytes in haemolymph of adult worker honey bees from spring-summer generation

Studies on the worker bee response to sounds under laboratory conditions

The influence of differential food on cells of haemolymph in adult worker honey bees Apis mellifera L.

Differentiation of thoracic temperatures of honey bee workers [Apis mellifera] in the capped brood region of a colony

The workers' [Apis mellifera carnica Pollm.] response with proboscis extension to the odour of queen extract

Screening of differentially expressed genes induced by water-soluble extracts from pollen during honeybee caste determination

Age of worker bees performing hygienic behaviour in a honeybee colony

The influence of queen pheromones, environment factors, genotypes and their interactions on length of life of caged workers in laboratory tests in bees

A rare case of overdominance in defensive behaviour of workers in honey bee colonies