Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Dariusz Gerula"'
Autor:
Dariusz Gerula
Publikováno v:
Journal of Apicultural Science.
Two different levels of diversity within a colony were compared for the prevalence of pathogens and diseases. Lower genetic diversity was obtained in the colonies in which the queens were inseminated with semen collected from drones originating from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b255ac436f6fc1ffb5ea9bf183270e74
https://doi.org/10.2478/jas-2023-0002
https://doi.org/10.2478/jas-2023-0002
Autor:
Marco Pietropaoli, Ivana Tlak Gajger, Cecilia Costa, Dariusz Gerula, Jerzy Wilde, Noureddine Adjlane, Patricia Aldea-Sánchez, Maja Ivana Smodiš Škerl, Jernej Bubnič, Giovanni Formato
Publikováno v:
Applied Sciences, Vol 11, Iss 10, p 4458 (2021)
Assessment of colony infestation by Varroa destructor is a crucial part of the Integrated Pest Management (IPM) applied to beekeeping. Natural mite fall, quantified by counting the mites on sticky sheets, is considered a reference method to estimate
Externí odkaz:
https://doaj.org/article/a35d9757d3aa4eccb3f276b380b00762
Publikováno v:
Journal of Apicultural Science, Vol 63, Iss 1, Pp 131-138 (2019)
The identification of honey bee (Apis mellifera) subspecies is often based on the measurements of workers’ fore-wings. The interpretation of the measurements can be difficult because the phenotype of workers is affected by both genetic and environm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c123b47a46472186f657070bcf5ed72
https://doi.org/10.2478/jas-2019-0010
https://doi.org/10.2478/jas-2019-0010
Publikováno v:
Journal of Apicultural Science, Vol 62, Iss 2, Pp 247-256 (2018)
During natural mating honeybee queens can get lost due to drifting, predators or other cases. In this work, the balling of queens returning from flights by worker bees originating from the same colony was observed. Three subspecies of bees Carniolan,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b27a7e4d3cef4932ef2e7e50c44cbb52
https://doi.org/10.2478/jas-2018-0023
https://doi.org/10.2478/jas-2018-0023
Publikováno v:
Journal of Apicultural Research. 55:130-136
The aim of this study was to examine whether the addition of a diluent for honey bee sperm, directly before insemination, affects the quality and vitality of queens and their brood, in comparison to queens inseminated traditionally, with fresh semen.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9b7f96ad67b0a0a1d00104f3dd39be8
https://doi.org/10.1080/00218839.2016.1200880
https://doi.org/10.1080/00218839.2016.1200880
Hygienic Behaviour of Honeybee Colonies with Different Levels of Polyandry and Genotypic Composition
Publikováno v:
Journal of Apicultural Science, Vol 59, Iss 2, Pp 107-113 (2015)
Honey bee queens were inseminated with diluted, homogenised semen collected from a few dozen drones. This procedure was carried out to increase the diversity of the queens’ offspring, which is in comparison to the offspring of queens inseminated wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::778000a066e3d9f38c48ed2c5ec366cb
https://doi.org/10.1515/jas-2015-0020
https://doi.org/10.1515/jas-2015-0020
Publikováno v:
Archives of Biological Sciences, Vol 67, Iss 3, Pp 889-894 (2015)
Genetic polymorphism in selectively controlled honeybee populations of A. m. carnica and A. m. caucasica in Poland, was characterized by microsatellite DNA analysis. All honeybee samples were analyzed for nine microsatellite loci: Ac011; A024; A043;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::accc261662165a9a43d8bdedf59925fd
http://www.doiserbia.nb.rs/img/doi/0354-4664/2015/0354-46641500048N.pdf
http://www.doiserbia.nb.rs/img/doi/0354-4664/2015/0354-46641500048N.pdf
Publikováno v:
Journal of Apicultural Science, Vol 58, Iss 2, Pp 87-97 (2014)
The aim of the study was to determine the effect of honey bee worker diversity within the colony on: development, honey productivity, and wintering. Two different levels of diversity within the colony were tested. The appropriate levels of diversity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::650fffa09dc22e323626ffce6419ed8a
https://doi.org/10.2478/jas-2014-0025
https://doi.org/10.2478/jas-2014-0025
Publikováno v:
Journal of Apicultural Science, Vol 58, Iss 1, Pp 119-126 (2014)
The susceptibility of bee larvae to Ascosphaera apis infestation and the hygienic behaviour of worker bees in relation to A. apis infected and freeze-killed brood were evaluated in three races of bees: Apis mellifera carnica, Apis mellifera caucasica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::402c0c6050279eed08a9e3c88793133f
https://doaj.org/article/7ba08ca5cd734472900ffd7064195e32
https://doaj.org/article/7ba08ca5cd734472900ffd7064195e32
Publikováno v:
Journal of Apicultural Science, Vol 58, Iss 1, Pp 135-143 (2014)
Winter honey bee losses were evaluated during the two overwintering periods of 2009/2010 and 2010/2011. The research included dead bee workers that fell on the hive bottom board (debris) and the ones that flew out of the hive. Differences were observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f1a4dd2f78ce1663e760fbedc041a4f
https://doaj.org/article/0c051a6fb5404c4fb0b69011a4a49b9b
https://doaj.org/article/0c051a6fb5404c4fb0b69011a4a49b9b