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Slide 15 of 17
However, bee reproduction and larval mortality are also adversely affected by
high density of nests in the bee shelters. To reduce these problems, different
recommendations are needed to prevent bees from interfering with each other in
their nest provisioning behavior. For example, bee boards could have fewer
tunnels spaced farther apart. More shelters could be used, each with fewer
bees. However, this raises another set of tradeoffs: reducing the density of
bees in shelters could require more handling time by the grower, more bee
boards for a given bee population, more shelters in a field, and thus
increased costs of management. How much of an improvement in bee yields is
possible for a given change in bee shelters and boards? Is the change cost
effective? These are additional questions for the future.