A Shaped Wire Grid for Estimating Quantities of Brood and Pollen in Combs

Jeffree, E. P.

doi:10.1080/0005772x.1958.11095048

Cited by 30 publications

(18 citation statements)

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“…Growth of bee populations at the high exposure sites (1 and 3) could not be described by a linear model (fig 1 c) (Jeffree, 1958), but observer bias and subjectivity are difficult to control. This reduces data comparability.…”

Section: Colony Responsesmentioning

confidence: 99%

Population dynamics of honey bee nucleus colonies exposed to industrial pollutants

et al. 1991

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Summary — Nucleus colonies (nucs) of = 4 500 honey bees (Apis mellifera L) were evaluated as an alternative to full-size colonies for monitoring pollution impacts. Fifty nucs were deployed at 5 sites along a transect on Vashon Island, Washington. This provided a gradient of exposure to arsenic and cadmium from industrial sources. After 40 d, statistically significant differences were observed among sites for mean mass and numbers of bees (P ≤ 0.01), honey yield (P ≤ 0.07), and arsenic and cadmium content of forager bees (P ≤ 0.001). These findings are discussed in terms of exposure to heavy metals and observed changes in colony dynamics, especially brood rearing and hoarding of pollen, nectar, and honey.

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Section: Colony Responsesmentioning

confidence: 99%

Population dynamics of honey bee nucleus colonies exposed to industrial pollutants

et al. 1991

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“…These tests were performed from May to Aug (the flowering season of Talh trees) in 2012 and 2013 using a standard wire frame divided into square centimeters (Jeffree, 1958).…”

Section: Brood Rearing and Food Storagementioning

confidence: 99%

Performance of two honey bee subspecies during harsh weather and Acacia gerrardii nectar-rich flow

Awad

Owayss

Alqarni

2017

Sci. agric. (Piracicaba, Braz.)

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Both climatic factors and bee forage characteristics affect the population size and productivity of honey bee colonies. To our knowledge, no scientific investigation has as yet considered the potential effect of nectar-rich bee forage exposed to drastic subtropical weather conditions on the performance of honey bee colonies. This study investigated the performance of the honey bee subspecies Apis mellifera jemenitica Ruttner (Yemeni) and Apis mellifera carnica Pollmann (Carniolan) in weather that was hot and dry and in an environment of nectar-rich flora.The brood production, food storage, bee population and honey yield of Yemeni (native) and Carniolan (imported) colonies on Talh trees (Acacia gerrardii Benth.), a nectar-rich, subtropical, and summer bee forage source in Central Arabia were evaluated. Owing to their structural and behavioral adaptations, the Yemeni bees constructed stronger (high population size) colonies than the Carniolan bees. Although both groups yielded similar amounts of Talh honey, the Yemeni bees consumed their stored honey rapidly if not timely harvested. A. m. jemenitica has a higher performance than A. m. carnica during extremely hot-dry conditions and A. gerrardii nectar-rich flow.

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“…Internal activities of honey bee colonies The areas for the sealed brood, stored pollen, honey, and bees (colony strength) were measured using a Langstroth frame divided into square inches (Jeffree, 1958) at 12-day intervals. The square inches were subsequently transferred into dm 2 (the values were divided by 15.5) for sealed brood, stored pollen, and honey areas while the area for the bees was transferred into numbers (the values were multiplied by 10).…”

Section: Measuring Parametersmentioning

confidence: 99%