Sentences with word «budworm»

In a second article appearing in the same journal, a team of geneticists studying the tobacco budworm moth discovered a recessive gene (BtR - 4) that provides resistance to Bt toxin.

Published in the journal Environmental Research Letters today, the study looked at both mountain pine beetle and western spruce budworm outbreaks and unpacked the interaction between insect activity and fire severity.

Fertilization and strict weed and pest control are important; the plants are especially vulnerable to a number of pests and plant diseases like pepper budworm, mites, crickets, and aphids.

The wasps consistently landed on either crop that sustained budworm damage — even after the researchers removed the leaf damage and the worms to eliminate nonchemical cues.

The tobacco budworm eats the fruits and buds of many important crops, including tobacco, cotton, corn, and tomatoes.

The protein produced from the gene kills the cotton bollworm and the native budworm.

The researchers analyzed volatiles emitted by tobacco, cotton, and corn plants while they were eaten by tobacco budworms and by corn earworms, which the wasps don't parasitize.

- phase change (e.g., «freezing» liquid to solid)- bifurcation (e.g., fork in the road)- self organized criticality (e.g., see Per Bak, avalanches, sand pile experiments, ecocatastrophes...)- cusp (e.g., «cusp catastrophe», like in ecological situations like the spruce budworm outbreaks as described by Ludwig, et al)- horizon!

The bacteria are now recommended for use against tobacco budworms and hornworms.

Meanwhile, the bacterial toxin, a protein called CryIA (b), is highly specific to certain insect pests, such as the European corn borer and the spruce budworm.

Many other pests, including serious scourges such as the Colorado potato beetle and the tobacco budworm, have the potential to develop resistance as well, according to the latest laboratory results.

In the case of the western spruce budworm, a cream - colored insect that especially enjoys munching on conifers, the analysis showed in the first few years after an outbreak fire severity is low, but over the course of decades it increases.

When cotton and corn plants suffered under the budworms, they discharged their own blend of those same chemicals — «kind of like a bar code in a grocery store,» says Lewis.

But some experts worry that pests targeted by the crops — bollworms and tobacco budworms, for example — could develop resistance.

Tobacco plants released the same eight compounds when wounded by either pest, but five of these chemicals were consistently more concentrated around plants hit by the tobacco budworms.

Now researchers say that some can even call for help: When chewed by tobacco budworms, many crops will send out a chemical distress signal to attract wasps that prey on the budworms.

For example, mountain pine beetle (Dendroctonus ponderosae), Douglas - fir beetle (Dendroctonus pseudotsugae), and the western spruce budworm (Choristoneura occidentalis; a defoliator) are important in determining forest distribution, structure, and regeneration.

Spruce budworms need spruce trees, though, so in order for the Cape May Warbler to expand its range, it will need the spruce forests to spread north quickly onto what is now Arctic tundra.

It is strongly dependent on outbreaks of spruce budworm, and has very large clutches (six on average) to take advantage of these unpredictable and ephemeral food sources when and where they do happen to occur.

He co-authored a study that looked at data beginning in the 1970s to determine the effects of two insects — mountain pine beetles and western spruce budworm — on fires in the mountains of Oregon and Washington.

In fact, in some cases, fire likelihood was lower where western spruce budworm, a «defoliator» that consumes needles, had killed trees.

The second paper (Murdock et al., 2013) examined the risks to forests from western spruce budworm and spruce bark beetle outbreaks under two different climate scenarios, as well as the potential effects on timber production in the Okanagan Timber Supply Area and at the provincial scale.