Estimating colony locations of bumble bees with moving average model

Nakamura, Hiroshi; Toquenaga, Yukihiko

doi:10.1046/j.1440-1703.2002.00461.x

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…First, larger colonies could represent those colonies that have survived until the end of the bumble bee season, while smaller colonies may be those that collapsed earlier in the season. Flowering plants in our study site are transient (Nakamura and Toquenaga 2002;Suzuki et al 2007Suzuki et al , 2009, and some available pollen sources change seasonally; thus, seasonal differences could have affected pollen diets. Second, larger colonies have a greater work-force than smaller colonies.…”

Section: Colony Size and Pollen Dietmentioning

confidence: 92%

Do pollen diets vary among adjacent bumble bee colonies?

Munidasa

Toquenaga

2010

Ecological Research

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Central-place foragers, such as bumble bees, are often constrained by their location when collecting resources to provide their young. We compared the resource use (pollen diets) among seven feral colonies of Bombus ardens located in an area of 2.5 · 2.5 km 2 . Because this area was likely to be within their maximum foraging distance, most floral resources could have been accessible to all colonies alike. Similarities in pollen diets among these colonies may suggest that the surrounding resources determine resources use, while deviations from this could reveal other factors that affect resources use among colonies. We examined if colonies showed similarities in pollen diets and if colonies do differ in pollen diets, we investigated whether factors, such as establishment year, colony size, and location, affected the colony pollen diets. We found that while the choices of floral resources were similar, the proportional use of the floral resources were significantly different, suggesting that the surrounding resources do not solely determine resource use among colonies. Further analyses showed that the dissimilarity of pollen diets between two colonies increased as spatial distance decreased, as the temporal distances increased, and as the difference in colony size increased. We found that other than differences in annual variances of resources distribution, colony size was the prominent factor that affected the resource use of our seven colonies. We propose that colony-size-dependent work-force differences and other unidentified colony-size-related factors could have significant effects on floral use among colonies overlapping spatially and temporally.

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Section: Colony Size and Pollen Dietmentioning

confidence: 92%

Do pollen diets vary among adjacent bumble bee colonies?

Munidasa

Toquenaga

2010

Ecological Research

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“…Thus it is worth examining how the terrain on which flowers are presented affects foraging behaviour of bees under field conditions. Not only foraging by worker bees, the terrain may also affect the nest site selection by queens (Nakamura & Toquenaga 2002; Suzuki, Kawaguchi & Toquenaga 2007); it might be expected that queens found their nests at sites surrounded by relatively flat areas for food economics. Moreover, from the point of view of pollination biology, it also remains to be seen whether slopes actually influence pollen flow among plants through the effects on pollinators.…”

Section: Discussionmentioning

confidence: 99%

Bumble bee preference for flowers arranged on a horizontal plane versus inclined planes

Makino

2008

Functional Ecology

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Summary 1.Determining factors affecting pollinator visitation is the key to understanding the reproductive success of animal-pollinated plants. The inclination of the ground where plants grow, which has been little studied, could be one such factor. There may be differences in foraging performance when visiting flowers on horizontal planes compared with flowers on inclines planes. And if this is the case, pollinators may have a preference for horizontal or inclined planes. To test these possibilities, a series of laboratory experiments with bumble bees and arrays of artificial flowers were conducted. 2. In the first experiment, bees were presented with a pair of floral arrays, one on a horizontal plane and one sloping. The bees preferred visiting flowers on the horizontal array. 3. In the second experiment, bees were allowed to forage on a flower array tilted at various angles ranging from 0 ° (horizontal) to 90 ° (vertical). It was found that their foraging performance decreased with increasing angles, showing a 9·1% reduction from 0 ° to 90 ° arrays. This reduction was caused by an increased travel time between flowers, when moving upslope or downslope. 4. These results suggest that plants growing on steep slopes may be less preferred by pollinators. Future studies are needed to clarify how slopes affect pollinator behaviour in field conditions and the ecological influences on plant reproduction.

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A systematic review of the nesting and overwintering habitat of bumble bees globally

Liczner

Colla

2019

J Insect Conserv

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Estimating colony locations of bumble bees with moving average model

Cited by 8 publications

References 16 publications

Do pollen diets vary among adjacent bumble bee colonies?

Do pollen diets vary among adjacent bumble bee colonies?

Bumble bee preference for flowers arranged on a horizontal plane versus inclined planes

A systematic review of the nesting and overwintering habitat of bumble bees globally

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