Bee Health Fugitives

Bee Health: Varroa Mite Is Public Enemy No. 1

By Laurie Greene, Editor

The varroa mite is “Public Enemy No. 1” for bees, according to Becky Langer, the North American Bee Care manager for Bayer CropScience. “It’s the giant tick that’s attaching to [bees],” said Langer, “transmitting viruses and bacteria. This mite has to be constantly managed and we’ve seen very high levels. When our bee experts were out visiting with people last fall, people were reporting very high levels of mites. So we anticipate high [bee] losses coming out of this winter because of the cyclic effect of the mite.” Langer explained. “It really re-emphasizes the necessity of controlling that mite—all the time—and staying on top of it.

Bayer Bee Health’s Feed a Bee Program

Commenting on other “Most Wanted Criminals” against bee health, Langer discussed recent research findings that well-fed bees are better able to defend themselves against the notorious nosema, a fungi-related parasite. “They actually found higher counts of nosema in those bees, but the well-fed bees could manage the nosema population—as opposed to not-well-fed bees.”

“That of course ties into Bayer Bee Care Program‘s Feed a Bee Program and its forage and nutrition initiative,” commented Langer. Launched last year to address the lack of food and habitat for bees Feed a Bee worked with more than 250,000 people and 75 partners to plant 65 million flowers and thousands of acres of forage across the country. “We’ve got to be feeding these bees better,” Langer reinforced.

According to their website, this year, Feed a Bee kicks off the spring with the launch of a new song and video for children of all ages. Other ways people can become involved with the program to help these hardworking insects are: request a free packet of wildflower seeds, for a limited time while supplies last; commit to growing pollinator-attractant plants of your own; and locate Feed a Bee plantings in your own communities on the interactive partner map. You can also tweet a ? emoji and #FeedABee to have Bayer plant on your “bee-half.”

Langer commented on crop protection products—”the usual suspects”—by stressing the importance for growers to follow labels. “If that’s the case and they are used properly and in the proper settings, there is no long-term effect on colony health,” she said. “Really, where we see colony health problems correlates well with the varroa mite and with forage and habitat issues.”

Among the Feed a Bee Program collaborators in California are: Wilbur-Ellis, San Francisco, CA; Bee Happy Apiaries, Vacaville, CA; Carmel Valley Ranch & Golf Course; PROJECT APIS M.; and Vitamin Bee.

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Resources:

Fleming, James C.; Daniel R. Schmehl; James D. Ellis, “Characterizing the Impact of Commercial Pollen Substitute Diets on the Level of Nosema spp. in Honey Bees (Apis mellifera L.),” PLOS ONE [an international, peer-reviewed, open-access, online publication], July 30, 2015.

California Ag Today2021-05-12T11:05:56-07:00April 25th, 2016|

Pollinator Bee Nutrition

**Collaborators on Pollinator Bee Nutrition: Bayer’s Bee Care Program and Project *Apis m.***

By Patrick Cavanaugh, Deputy Editor

The North American Bayer Bee Care Program which, according to director Becky Langer, has invested more than $12 million to maintain pollinator health, has been working closely with Project Apis m. (PAm), which funds research to enhance the health and vitality of honeybee colonies while improving crop production.

“We have enjoyed working with Apis m,” said Langer, “because foraging nutrition is one of the top factors affecting bee health today. Our ‘Feed a Bee’ program, launched in March 2015, has the goal to partner with 50 different organizations as ‘Feed a Bee’ partners, and PAm, dedicated to pollinator health, and is one of the “Feed a Bee” partners.”

Langer explained that PAm really focuses on crops growers can plant around their orchards to provide for the bees when they arrive in California before the almond bloom, as well as after the almond pollination just before the bees move on to their next job. “Because PAm distributes free wildflower seeds and other to growers,” Langer said, “we see it as a great partnership that really helps pollinator health thrive and move forward.”

California Ag Today2021-05-12T11:05:57-07:00March 18th, 2016|

Bee Loss Update

Below Average Winter Bee Loss for U.S. Honey Bees

Edited by Patrick Cavanaugh, CalAgToday

There are still questions about how best to measure colony losses over winter months, during the spring through fall period, and on an annual basis. The USDA winter survey has been conducted only since 2006 and is based on beekeeper self-reporting. Since the survey’s inception, winter losses have averaged approximately 30 percent. Prior to the introduction of the parasitic Varroa Mite and other pests and disorders in the mid-1980s, losses in cold northern states were typically the 0-15% range. Since then, colony losses over winter have been much higher. In warm southern states, honey bees seldom need to cluster, so they can continue brood rearing and foraging for most of the year. Therefore, it is important to define what is meant by winter, and these distinctions further complicate winter loss determination and calculation.

The latest report from the USDA is good news for all who care about the health of honey bee colonies. For the second year in a row, winter losses of U.S. honey bee colonies were well below the historic 30 percent average. More importantly, the long-term trend of overwintering losses continues to show improvement due to greater awareness of factors affecting honey bee health, particularly the varroa mite, and better pest management, including extensive use of the highly effective Varroacide, Apivar.

This report follows shortly after the USDA released its annual Honey Report, which showed that the number of U.S. honey bee colonies grew to 2.74 million in 2014, the highest level in many years, continuing a 10-year trend of steady growth.

Summer losses are expected and common, however, because of Varroa, other disorders, queen issues, and pesticide residues in hives, especially extremely high residues of bee-protecting Varroacides, beekeepers do face a challenge to keep these losses to a minimum. It is apparent that in recent years, beekeepers are doing a much better job of managing honey bees and the problems they face because colony numbers in the U.S. continue to grow. Some states, have seen substantial increases in colony numbers. Florida, for example has more than doubled the number of colonies since 2006.

Feed a Bee, Bayer CropScience

Even with this good news about overwintering trends, we must continue to focus on the challenges facing bee health. Bayer CropScience is developing new solutions to the problems caused by the invasive Varroa mite and is working to tackle another major issue facing pollinators today – lack of forage – through the Feed a Bee initiative. And we recently announced our Healthy Hives 2020 research collaboration with honey bee experts to identify tangible actions to help improve the health of honey bee colonies over the next five years. Although there is much work yet to do, this report validates the efforts of many stakeholders who are working to protect bees and promote sustainable agriculture.

Useful Links: Feed a Bee, Bee Health, Varroacides, Healthy Hives 2020