scholarly journals Swarming and Migration of Apis dorsata and Apis laboriosa Honey Bees in India, Nepal and Bhutan

2012 ◽  
Vol 56 (1) ◽  
pp. 81-91 ◽  
Author(s):  
Jerzy Woyke ◽  
Jerzy Wilde ◽  
Maria Wilde

Swarming and Migration ofApis dorsataandApis laboriosaHoney Bees in India, Nepal and BhutanThe migratory open air nestingApis dorsataandApis laboriosahoneybees migrate at least twice a year. DNA genotyping showed that the same swarms return to their natal nesting sites. We examined 23 nesting sites in Nepal, India and Bhutan, on which 587 colonies ofA. dorsataandA. laboriosanested. The results showed that the frequency of the periodic mass flights (PMF) performed by the colonies is a good indicator of the status of current colony performance. During the swarming period, both,A. dorsataandA. laboriosaissue several swarms. In some colonies, so many bees swarmed out, that those remaining in the maternal colonies did not cover the combs. After the rest of the brood emerged, all the bees of such colonies abscond during the swarming period. Thus, absconding appeared in results of total out swarming. The swarms do not migrate directly to the seasonal alternative nesting sites, but establish new colonies in the areas around. After environmental conditions deteriorate, all the bees with their queens abscond and migrate to alternate seasonal nesting sites. The next season, the swarms do not return to their original reproductive natal sites, but to those sites they occupied the previous season lately, where from they absconded.

2008 ◽  
Vol 21 (6) ◽  
pp. 481-494 ◽  
Author(s):  
Jerzy Woyke ◽  
Jerzy Wilde ◽  
Maria Wilde ◽  
Venkataramegowda Sivaram ◽  
Cleofas Cervancia ◽  
...  

2012 ◽  
Vol 51 (2) ◽  
pp. 193-203 ◽  
Author(s):  
Jerzy Woyke ◽  
Jerzy Wilde ◽  
Maria Wilde

2012 ◽  
Vol 51 (3) ◽  
pp. 245-251 ◽  
Author(s):  
Lian-Fei Cao ◽  
Huo-Qing Zheng ◽  
Xuan Chen ◽  
De-Fang Niu ◽  
Fu-Liang Hu ◽  
...  

Author(s):  
Ekaterina Maksimova ◽  
Ekaterina Maksimova ◽  
Vladimir Zhigulsky ◽  
Vladimir Zhigulsky ◽  
Vladimir Shuisky ◽  
...  

The macrophyte thicket ecosystems of higher aquatic vegetation in the Neva Bay (NB) and Eastern Gulf of Finland (EGoF) perform many important roles, including acting as the habitats, nesting sites and migration sites for aquatic and semi-aquatic birds, creating the specific conditions necessary for the spawning and growth of many species of fish, and taking part in the self-purification of the aquatic ecosystems. Many anthropogenic disturbances, hydraulic works in particular, have a significant negative impact on these macrophyte thicket ecosystems. In recent years, the active growth of a new type of macrophyte thicket has been observed in the NB. This is due to the aftereffects of the construction of the Saint Petersburg Flood Prevention Facility Complex (FPFC). It is quite likely that the total macrophyte thicket area in these waters is currently increasing. In the future, it will be necessary to assess the environmental impacts of the hydraulic works on the macrophyte thicket of the NB and EGoF, taking into account the background processes of the spatiotemporal dynamics of the reed beds in the waters in question. To do this, it will be necessary to carry out a comprehensive study of these ecosystems and identify patterns in their spatial and temporal dynamics. The program of the study has been developed and is currently being implemented by Eco-Express-Service, a St. Petersburg eco-design company.


Pathogens ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 785
Author(s):  
Sanchai Naree ◽  
Rujira Ponkit ◽  
Evada Chotiaroonrat ◽  
Christopher L. Mayack ◽  
Guntima Suwannapong

Nosema ceranae is a large contributing factor to the most recent decline in honey bee health worldwide. Developing new alternative treatments against N. ceranae is particularly pressing because there are few treatment options available and therefore the risk of increased antibiotic resistance is quite high. Recently, natural products have demonstrated to be a promising avenue for finding new effective treatments against N. ceranae. We evaluated the effects of propolis extract of stingless bee, Tetrigona apicalis and chito-oligosaccharide (COS) on giant honey bees, Apis dorsata, experimentally infected with N. ceranae to determine if these treatments could improve the health of the infected individuals. Newly emerged Nosema-free bees were individually inoculated with 106N. ceranae spores per bee. We fed infected and control bees the following treatments consisting of 0%, 50%, propolis extracts, 0 ppm and 0.5 ppm COS in honey solution (w/v). Propolis extracts and COS caused a significant increase in trehalose levels in hemolymph, protein contents, survival rates and acini diameters of the hypopharyngeal glands in infected bees. Our results suggest that propolis and COS could improve the health of infected bees. Further research is needed to determine the underlying mechanisms responsible for the improved health of the infected bees.


Apidologie ◽  
2007 ◽  
Vol 38 (5) ◽  
pp. 411-418 ◽  
Author(s):  
Michael D. Breed ◽  
Xiao-Bao Deng ◽  
Robert Buchwald

2020 ◽  
Author(s):  
Sebastian Biton-Porsmoguer ◽  
Ricard Bou ◽  
Elsa Lloret ◽  
Manuel Alcaide ◽  
Josep Lloret

AbstractThe status of sardine and anchovy populations in the northern Mediterranean Sea has been declining in recent decades. In this study, fatty acids and parasitism at different reproductive and feeding stages in these two species were assessed using specimens caught along the northern Catalan coast, in order to assess the links between lipid dynamics, reproduction and feeding in these two species, and to contribute towards an explanation of the potential causes of the current situation of the stocks. The results support the use of fatty acid levels as indicators of the body condition of sardine and anchovy at different reproductive and feeding stages, as well as that of the pelagic environmental conditions. In particular, the relatively low n-3 PUFA levels (which are crucial for reproductive success) found in spawning sardines compared to spawning anchovies indicate a poorer reproductive health status of sardine. By comparing the current total lipid content values with those recorded in other Mediterranean and North Atlantic areas, and, others from more than ten years ago, in the adjacent area of the Gulf of Lion, our study reveals the persistent poor condition of sardine and anchovy in the northern Catalan Sea. Furthermore, the low levels of diatom fatty acid markers observed throughout the spawning and non-spawning seasons in both sardine and anchovy, indicate a diet poor in diatoms. Moreover, the results indicate that it is very unlikely that parasitism is a significant factor in the decline in condition of sardine and anchovy in the northern Catalan Sea. In fact, the results suggest that the current poor condition of sardine and anchovy in the northern Catalan Sea has been exacerbated by a decrease in plankton productivity and/or a shift in the taxonomic composition of phytoplankton communities, adding to the ongoing effects of overfishing.


2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Jamiat . ◽  
Iskandar A M ◽  
M Idham

Local wisdom is one of the characteristics national culture that deserves to be explored and developed in the future. Honey production is carried out by maintaining traditional nest making that utilizes natural materials are local wisdom that is still applied. The purpose of this study is to (1) reveal the local wisdom in natural forest honey management, (2) the amount of natural forest honey produced by the community from periau using tikung techniques in the area of Siawan Belida, Nanga Tuan Village, Bunut Hilir Subdistrict, Kapuas Hulu Regency. The method used a survey with interview techniques, the selection of respondents are choosing all Nanga Tuan periau. The results of the study revealing local wisdom in preserving natural honey bees with tikung techniques in the Siawan Belida area, namely; tikung, making tikung, selecting trees for installation of tikung, agreement on division of territory in lakes (suak), sanctions for tree destroyers, sanctions for tikung hives burglars, pre-harvesting ceremonies, conditions of harvesting natural forest honey, harvesting honey bees process, honey treatment after harvesting at home. Tree preservation efforts of tikung honey bee techniques based on local wisdom, including; stipulation of forest lake areas in the management of tikung honey, types of feed for Apis dorsata bees. The amount of natural forest honey is 5- 8 tons / year with planting done twice / year.Keywords : local wisdom, natural honey bees, Siawan Belida, tikung techniques


2016 ◽  
Vol 55 (5) ◽  
pp. 433-444 ◽  
Author(s):  
Jerzy Woyke ◽  
Jerzy Wilde ◽  
Maria Wilde
Keyword(s):  

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