Stink Bug Rearing Technique Could Lead to Control Strategies

Researchers at North Carolina A&T State University have found a successful rearing method for brown marmorated stink bugs (Halyomorpha halys), which could be used to develop a reliable supply of the bugs for research.

Drs. Beatrice Dingha and Louis Jackai have developed a laboratory rearing method that has successfully produced five generations of brown marmorated stink bugs. Their work was presented at the 2014 Annual Meeting of the Southeastern Branch of the Entomological Society of America in March, and it is believed to be the first reported account of a continuous rearing method for this bug past a second generation in the U.S.

“Nobody to our knowledge has ever reported this, and as far as we know, this is the first time this insect has successfully been reared through several generations in the laboratory in the U.S.,” Dingha said.

With approximately 100 crops worth $21 billion susceptible to brown marmorated stink bug damage across the country, the U.S. Department of Agriculture has an ongoing nationwide research and management program focused exclusively on the insect. Despite some progress, research has been hampered by difficulties keeping enough bugs alive and reproducing in the laboratory long enough so that controlled experiments can be conducted. Dingha and Jackai say their success means research on the bug can now advance more rapidly.

“If you don’t have a reliable population to work with, you can’t study it and develop management strategies. Now, we are able to do experiments and take research on this pest to the next level,” Dingha said.

Dingha and Jackai’s method involves feeding the bugs a medley of their favorite foods, including fresh tomatoes, carrots, green beans, corn, cucumber, squash, and leaves from butterfly bushes and princess trees. They also kept the bugs at a consistent temperature of 25-27 degrees centigrade and 70 percent relative humidity. This combination of factors seems to encourage the bugs to remain active and reproducing instead of lapsing into their natural dormant state, a form of winter hibernation known to entomologists as “diapause.”

The U.S. Department of Agriculture has deemed the insect a major economic threat to fruit and vegetable producers, as well as to many growers of row crops and ornamental plants. The U.S. Apple Association estimates that in 2010 alone, the bug accounted for $37 million lost from apple orchards in the Mid-Atlantic region, and growers of other crops are reporting similar losses. Crops that are susceptible to the insect include vegetables, fruits, nuts, berries, corn and soybeans, among others.

Indigenous to Asia, the brown marmorated stink bug was first found in Pennsylvania in the mid-1990s. With few natural predators in North America, it has since expanded its range to at least 38 states. In addition to posing a threat to crops, the bug has also become a common household nuisance, entering homes and other manmade structures to overwinter.

Comments

  1. Correction Not the first publication…… there are many here is the title of one published in 2012.

    Rearing the Brown Marmorated Stink Bug Halyomorpha halys (Heteroptera: Pentatomidae)
    Article can be found online at: http://www.bioone.org/doi/abs/10.1653/024.095.0339

  2. ‘“Nobody to our knowledge has ever reported this, and as far as we know, this is the first time this insect has successfully been reared through several generations in the laboratory in the U.S.,” Dingha said.’

    Did they check with most other BMSB researchers? Talking to a couple researchers I know that have been working with colonies for multiple years, they haven’t had any issues getting towards multiple generations much higher than just five. If that is more common place than this article makes it seem, it seems like getting BMSB colonies beyond five generations is a non-issue for most researchers (and maybe why it was never reported how many generations they were getting out to because there was never a need to).

    I don’t rear BMSB myself, so I can only go off what I’ve heard from a handful of those that have. For any other BMSB researchers out there reading this, has getting your colony out to multiple generations been an issue?

    • Louis Jackai says:

      Tony,
      When you get the answer to your query let us know. The folks we talked to seemed to have problems going beyond 2 generations. When the insects are out in the field during the summer, anyone who wishes to keep a culture can rear the insect continuously with frequent replenishment (while they last) with field-collected insects. That is NOT the same as what we did. We reared the insect year round despite our limited means; may be you did not get that! If you have reared the BMSB continuously (i.e. throughout the year) for over 5 generations before our work was reported, and knowing how important this pest has become you ought to have your work published. Until then we are still the first to accomplish this. Sorry! We would be glad to compare notes on our procedures. We will be at the ESA meeting in Portland if you want to have a discussion on this.
      Louis

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: