scholarly journals Influence of early spring feeding on the development of bee families in the natural lands of Polissya

2021 ◽  
Vol 23 (95) ◽  
pp. 136-140
Author(s):  
O. M. Sichenko
Keyword(s):  
Contaminated Soils ◽  
Egg Production ◽  
Negative Impact ◽  
Early Spring ◽  
Spring Period ◽  
Medium Strength ◽  
Clean Area ◽  
Intensity Of Development ◽  
Bee Colonies ◽  
Intensive Development

To ensure intensive early spring development of bee colonies in the natural lands of Polissya Zhytomyr region in the winter-spring period it is necessary to feed stimulating food. Therefore, the aim of the work is to study the influence of spring feeding with sugar-honey dough on the development and honey productivity of bee families of Ukrainian breed in conditions of clean and radioactively contaminated natural lands of Zhytomyr Polissya. The influence of feeding bee colonies with sugar-honey dough (powdered sugar, centrifuged honey, water) using pure and radioactively contaminated honey on the intensity of development and honey productivity was studied. To do this, two groups were created with experimental families of Ukrainian bee breeds, selected on the principle of analogs, one of which was in a radioactively clean area, and the other in radioactively contaminated soils 137 Cs within 15 Ki/km² and above. A comparative assessment of the early spring development of families was made: from March 16 to May 20, with an interval of 21 days, the number of open and sealed brood, egg production of queens during the honey harvest season was determined. Honey productivity at the honey harvest from natural lands was determined by the amount of honey obtained in spring and summer. Early spring feeding with sugar-honey dough promotes intensive development of families, and the content of radioactively contaminated honey does not have a negative impact on their development. After the end of the season of honey collection from natural lands, bee families of Ukrainian breed, both in the radioactively contaminated and clean zone, had a medium strength and could successfully overwinter.

scholarly journals Біологічні особливості робочих бджіл за умов зимівлі бджолиних сімей на різних кормах

2013 ◽  
pp. 70-72
Author(s):  
Л. П. Шамро ◽  
Т. М. Шамро
Keyword(s):  
Comparative Study ◽  
Fat Body ◽  
Early Spring ◽  
Physiological Characteristics ◽  
Sugar Concentration ◽  
Spring Period ◽  
The Media ◽  
Bee Colonies

Проведені порівняльні дослідження анатомо-фізіологічних показників бджіл у бджолиних сімей (концентрація білка в гемолімфі, ступені розвитку глоткових залоз і жирового тіла), які зимували на меді та цукровому кормі, впродовж осінньо-зимово-ранньовесняного періоду їх утримання. Виявлено, що під час поповнення бджолиним сім’ям кормових запасів на зиму цукровим кормом концентрація білка в гемолімфі бджіл знижується до 48,15 проти 72,05 г/л у сімей на меді (Р<0,01). Надалі – в період зимівлі й до заміни зимувалих бджіл на літніх – вона постійно є дещо нижчою порівняно з сім’ями, які споживали взимку натуральний мед. Ступені розвитку глоткових залоз і жирового тіла впродовж періоду дослідження стабільно недостовірно нижчі у бджіл сімей, які зимували на цукровому кормі. A comparative study of anatomical and physiological characteristics of bees in bee colonies (the concentration of protein in the hemolymph, the degree of pharyngeal glands and fat body) that wintered in the honey and sugar feed, during the autumn-winter-early spring period of their detention was done. It was found that during the replenishment of forage supplies in winter with feed sugar concentration of protein in the hemolymph of bees falls to 48.15 against 72.05 g/l in the media families (P<0,01). Later - during the winter stay and to replacing wintered bees into summer - it is always slightly lower than in families who eat honey in winter. The degree of development of pharyngeal glands and fat body during the study period is consistently (uncertainly) lower in bee families that wintered on sugar feed.

scholarly journals Seasonal shifts in export of DOC and nutrients from burned and unburned peatland-rich catchments, Northwest Territories, Canada

2018 ◽  
Vol 22 (8) ◽  
pp. 4455-4472 ◽  
Author(s):  
Katheryn Burd ◽  
Suzanne E. Tank ◽  
Nicole Dion ◽  
William L. Quinton ◽  
Christopher Spence ◽  
...  
Keyword(s):  
Climate Change ◽  
Mineral Soil ◽  
Fire Regimes ◽  
Forest Litter ◽  
Early Spring ◽  
Permafrost Region ◽  
Spring Period ◽  
Discontinuous Permafrost ◽  
Run Off ◽  
Spring Freshet

Abstract. Boreal peatlands are major catchment sources of dissolved organic carbon (DOC) and nutrients and thus strongly regulate the landscape carbon balance, aquatic food webs, and downstream water quality. Climate change is likely to influence catchment solute yield directly through climatic controls on run-off generation, but also indirectly through altered disturbance regimes. In this study we monitored water chemistry from early spring until fall at the outlets of a 321 km2 catchment that burned 3 years prior to the study and a 134 km2 undisturbed catchment. Both catchments were located in the discontinuous permafrost zone of boreal western Canada and had  ∼  60 % peatland cover. The two catchments had strong similarities in the timing of DOC and nutrient yields, but a few differences were consistent with anticipated effects of wildfire based on peatland porewater analysis. The 4-week spring period, particularly the rising limb of the spring freshet, was crucial for accurate characterization of the seasonal solute yield from both catchments. The spring period was responsible for  ∼  65 % of the seasonal DOC and nitrogen and for  ∼  85 % of the phosphorous yield. The rising limb of the spring freshet was associated with high phosphorous concentrations and DOC of distinctly high aromaticity and molecular weight. Shifts in stream DOC concentrations and aromaticity outside the early spring period were consistent with shifts in relative streamflow contribution from precipitation-like water in the spring to mineral soil groundwater in the summer, with consistent relative contributions from organic soil porewater. Radiocarbon content (14C) of DOC at the outlets was modern throughout May to September (fraction modern carbon, fM: 0.99–1.05) but likely reflected a mix of aged DOC, e.g. porewater DOC from permafrost (fM: 0.65–0.85) and non-permafrost peatlands (fM: 0.95–1.00), with modern bomb-influenced DOC, e.g. DOC leached from forest litter (fM: 1.05–1.10). The burned catchment had significantly increased total phosphorous (TP) yield and also had greater DOC yield during summer which was characterized by a greater contribution from aged DOC. Overall, however, our results suggest that DOC composition and yield from peatland-rich catchments in the discontinuous permafrost region likely is more sensitive to climate change through impacts on run-off generation rather than through altered fire regimes.

scholarly journals The effect of the queen's age on the Varroa mite (Varroa destructor) burden of honey bee (Apis mellifera L.) colonies

2018 ◽  
pp. 83-87
Author(s):  
Marianna Takács ◽  
János Oláh
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Varroa Destructor ◽  
Early Spring ◽  
Brood Chamber ◽  
One Year ◽  
The One ◽  
Post Hoc ◽  
Bee Colonies ◽  
Mite Mortality

An apiary trial was conducted in 2016 August to October in Szabolcs-Szatmár-Bereg County, Nyírmada to evaluate the influence of queen’s age on the Varroa destructor-burden in the treatment colonies. Sixty colonies of bees belonging to the subspecies Apis mellifera carnica pannonica in Hunor loading hives (with 10 frames in the brood chamber/deep super) were used. The colonies were treated with amitraz and the organophosphate pesticide coumaphos active ingredients. The amitraz treatment includes 6 weeks. The coumaphos treatment with Destructor 3.2% can be used for both diagnosis and treatment of Varroasis. For diagnosis, one treatment is sufficient. For control, two treatments at an interval of seven days are required. The colonies were grouped by the age of the queen: 20 colonies with one-year-old, 20 colonies with two-year-old and 20 colonies with three-year-old queen. The mite mortality of different groups was compared. The number of fallen mites was counted at the white bottom boards. The examination of spring growth of honey bee colonies has become necessary due to the judgement of efficiency of closing treatment. The data was recorded seven times between 16th March 2017 and 19th May 2017. Data on fallen mites were subjected to one-way analysis of variance (ANOVA) and Post-Hoc Tukey-test. Statistical analysis was performed using the software of IBM SPSS (version 21.). During the first two weeks after treatments, the number of fallen mites was significantly higher in the older queen’s colonies (Year 2014). The total mite mortality after amitraz treatment in the younger queen’s colonies was lower (P<0.05) compared to the three-year-old queen’s colonies. According to Takács and Oláh (2016) although the mitemortality tendency, after the coumaphos (closing) treatment in colonies which have Year 2014 queen showed the highest rate, considering the mite-burden the colonies belongs to the average infected category. The colonial maintenance ability of three-year-old queen cannot be judged based on the influencing effect on the mite-burden. The importance of the replacement of the queen was judged by the combined effect of several factors. During the spring-growth study (16th March–19th May) was experienced in the three-year-old queen’s colonies the number of brood frames significantly lower compared to the one- and two-year-old queen’s colonies. In the study of 17th April and 19th May each of the three queen-year-groups were varied. Therefore in the beekeeping season at different times were determined the colonial maintenance ability of queens by more factors: efficiency of closing treatment in early spring, the spring-growth of bee colonies, the time of population shift (in current study, this time was identical in each queen-year), honey production (from black locust).

Effect of herb-clover mixes of plantain and chicory on yearling lamb production in the early spring period

2016 ◽  
Vol 56 (10) ◽  
pp. 1662 ◽  
Author(s):  
S. C. Somasiri ◽  
P. R. Kenyon ◽  
P. D. Kemp ◽  
P. C. H. Morel ◽  
S. T. Morris
Keyword(s):  
White Clover ◽  
Early Spring ◽  
Alternative Feed ◽  
Spring Period ◽  
Feed Source

Lamb production was evaluated in three herbage treatments (Pasture mix, Plantain mix and Chicory mix) in two consecutive early spring periods. The hypothesis was that the Plantain and Chicory mixes would produce greater weaned lamb liveweight gains than the Pasture mix. The lambs were rotationally grazed weekly in the herbage treatments and weighed fortnightly and carcass data collected at slaughter. Both Plantain and Chicory mixes produced heavier (P < 0.05) carcasses at slaughter (21.1 ± 0.11, 21.8 ± 0.11 and 22.3 ± 0.38 in Experiment 1 followed by 18.1 ± 0.17, 20.3 ± 0.17 and 19.7 ± 0.17 in Experiment 2 for the Pasture, Plantain and Chicory mixes, respectively). Lambs had greater (P < 0.05) liveweight gains and dressing-out percentages in Experiment 2 (39.5 ± 0.29, 41.4 ± 0.29 and 41.3 ± 0.29 for the Pasture, Plantain and Chicory mixes, respectively), than the Pasture mix in the early spring period. Therefore, these herb-clover mixes could be an alternative feed source in the early spring period compared with ryegrass/white clover pastures for finishing lambs.

Shellfishing Seasons in the Prehistoric Southeastern United States

1986 ◽  
Vol 51 (1) ◽  
pp. 21-37 ◽  
Author(s):  
Cheryl Claassen
Keyword(s):  
United States ◽  
Brackish Water ◽  
Gulf Coast ◽  
Negative Impact ◽  
Atlantic Coast ◽  
Southeastern United States ◽  
Early Spring ◽  
Warm Weather ◽  
Brackish Water Species ◽  
Water Species

Shellfish seasonality studies are summarized in this article, which presents the results of analysis at 94 sites in nine southeastern states. All but six of the sites are middens or shell lenses composed of marine or brackish water species (M. mercenaria, R. cuneata, D. variabilis). Shells in those sites along the Atlantic coast were collected from fall to early spring, while shells in sites on the Gulf coast were collected during early spring to summer. Freshwater shellfish middens in four states have been investigated and consistently indicated collection during warm weather. The uniformity of the results indicates that the variation in species used, techniques used, sample sizes, or geography have no noticeable negative impact on the usefulness of the results. It is argued that shellfish were a staple in the diet of many prehistoric horticultural peoples in spite of the fact that they are a dietary supplement for modern hunters and collectors.

OBSERVATIONS ON THE FECUNDITY OF HYSSOPUS THYMUS (HYMENOPTERA: EULOPHIDAE)

1974 ◽  
Vol 106 (12) ◽  
pp. 1327-1332
Author(s):  
Paul D. Syme
Keyword(s):  
Egg Production ◽  
Early Spring ◽  
Limiting Factor ◽  
Weighted Mean ◽  
Female Wasp ◽  
Laboratory Conditions ◽  
Preoviposition Period ◽  
Large Host

AbstractThe fecundity of Hyssopus thymus Girault females does not normally vary between generations within a single year, but differences frequently occur between years. A weighted mean annual fecundity of 14 eggs per female under laboratory conditions has been determined by pooling several years’ records, although the maximum number of eggs laid by a female was 130. A mean of 20 eggs per female was determined under quasinatural conditions. The weight of the host, Rhyacionia buoliana (Schiffermüller) (Lepidoptera: Olethreutidae), limits the number of eggs laid per host during the early spring when shoot moth larvae are small. When the host larvae are larger, size is no longer a limiting factor in the number of eggs deposited per host. There is a preoviposition period of about 3 days and egg production is synovigenic. The number of fully developed eggs within a female at one time varies between about 7 and 12 eggs on a 3-day cycle, and never exceeds 16. Each female wasp attacks two or three large host larvae and this number is probably doubled when the host larvae available for attack are small.

scholarly journals Poultry welfare in terms of poultry red mite (Dermanyssus gallinae) impact and control

2019 ◽  
Vol 35 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Аleksandar Pavlicevic ◽  
Ivan Pavlovic ◽  
Radomir Ratajac ◽  
Danica Popovic ◽  
Branislav Davidovic ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Egg Production ◽  
Laying Hens ◽  
Negative Impact ◽  
Dermanyssus Gallinae ◽  
Poultry Red Mite ◽  
Infestation Intensity ◽  
And Control ◽  
Economic Damages

Technological solutions and environmental conditions have a significant impact on infestation intensity and the problems around D. gallinae control. Changes in keeping laying hens in EU, in terms of D. gallinae influence, have not led to the welfare of the layers. On the contrary, they have contributed to the spreading of disease, have worsened conditions for control and accentuated harmful consequences. Apart from the poultry, these changes have also had a negative impact on the welfare of humans, through a toxicological and zootonic risk, and economic damages. Conventional cages so far provide the most appropriate environment for D. gallinae control. Opportunities for improving, even solving the problem of D. gallinae control in egg production do exist, however they require a changing the entire approach hitherto.

scholarly journals Chronic exposure to a neonicotinoid pesticide and a synthetic pyrethroid in full-sized honey bee colonies

2018 ◽  
Author(s):  
Richard Odemer ◽  
Peter Rosenkranz
Keyword(s):  
Population Dynamics ◽  
Honey Bee ◽  
Chronic Exposure ◽  
Agricultural Landscape ◽  
Negative Impact ◽  
Synthetic Pyrethroid ◽  
Social Resilience ◽  
Bee Colony ◽  
The Impact ◽  
Bee Colonies

ABSTRACTIn the last decade, the use of neonicotinoid insecticides increased significantly in the agricultural landscape and meanwhile considered a risk to honey bees. Besides the exposure to pesticides, colonies are treated frequently with various acaricides that beekeepers are forced to use against the parasitic mite Varroa destructor. Here we have analyzed the impact of a chronic exposure to sublethal concentrations of the common neonicotinoid thiacloprid (T) and the widely used acaricide τ-fluvalinate (synthetic pyrethroid, F) - applied alone or in combination - to honey bee colonies under field conditions. The population dynamics of bees and brood were assessed in all colonies according to the Liebefeld method. Four groups (T, F, F+T, control) with 8-9 colonies each were analyzed in two independent replications, each lasting from spring/summer until spring of the consecutive year. In late autumn, all colonies were treated with oxalic acid against Varroosis. We could not find a negative impact of the chronic neonicotinoid exposure on the population dynamics or overwintering success of the colonies, irrespective of whether applied alone or in combination with τ-fluvalinate. This is in contrast to some results obtained from individually treated bees under laboratory conditions and confirms again an effective buffering capacity of the honey bee colony as a superorganism. Yet, the underlying mechanisms for this social resilience remain to be fully understood.

scholarly journals Influence of spring feed on the strength of honey bee colonies during spring development

2011 ◽  
Vol 27 (4) ◽  
pp. 1757-1760
Author(s):  
B. Andjelkovic ◽  
G. Jevtic ◽  
M. Mladenovic ◽  
M. Petrovic ◽  
T. Vasic
Keyword(s):  
Honey Bee ◽  
Colony Development ◽  
Forage Crops ◽  
Fourth Group ◽  
The Third ◽  
Spring Period ◽  
Bee Colony ◽  
Sugar Syrup ◽  
Different Types ◽  
Bee Colonies

The strength of honey bee colonies during year depends on wintering and on biologic development of colonies during spring period. To ensure satisfactory colony development in spring period, it is necessary to add stimulative feed. The aim of this study is to determine the effect of different types of spring feed on the honey bee colony strength. Twenty honey bee colonies were selected for this experiment. Colonies were divided into five groups, and each group received different stimulative feed. The first group was fed with sugar syrup, and the second with sugar syrup with added microelements and with vitamin complex. The third group received sugar candy without additives, and the fourth group received sugar candy with addition of microelements and vitamins. The fifth group was fed with honey. The experiment was conducted on the apiary of the Institute for forage crops in Krusevac.

Sign in / Sign up

Export Citation Format

Share Document