California almond growers may not have enough honey bees to pollinate this year’s crop of 800,000 acres, says Extension apiculturist Eric Mussen of the UC Davis Department of Entomology. He attributes the difficulty to winter losses and less populous hives.

“We need 1.6 million colonies, or two colonies per acre, and California has only about 500,000 colonies that can be used for that purpose,” he said. “We need to bring in a million more colonies but due to the winter losses, we may not have enough bees.”

Those winter losses -- still being tabulated -- and the resulting fewer bees per hive could spell trouble for almond growers, he said.

“Last year was not a good year for honey production in the United States,” Mussen said, “and it could be one of the worst honey production years in the history of nation, although it’s been pretty rough in some of the previous years. Usually when we’re short of nectar, we’re short on pollen, and honey bees need both.  So, 2012 was a bad year for bee nutrition.”

Malnutrition is one of the stressors of colony collapse disorder, the mysterious malady first noticed in the winter of 2006 that has decimated one-third of the nation’s bees every year.  Some beekeepers have reported winter losses of  90 to 100 percent.

(See related, Honey bee losses defy solitary explanations)

In CCD, the adult bees abandon the hive, leaving behind the queen bee, brood and food stores. Bee scientists think CCD is caused by a multitude of factors, includes, pests, pesticides, parasites, diseases, malnutrition and stress.

“We don’t know how many more bees will be lost over the winter,” Mussen said. “We consider the winter ending when the weather warms up and the pollen is being brought into the hives.”

“Many, many colonies are not going to make it through the winter,” said Mussen, an apiculturist in the UC Davis Department of Entomology since 1976.  “We won’t have as large a bee population as in the past.”