Tag: "larvae" at biology news
Threats to health reduced with Bt corn hybrids
...an be increased by insect damage in crops. Insect larvae
chew on stalks andkernels, creating wounds where fungal spores can enter the plant. Onceestablished, these fungi often produce mycotoxins. Some mycotoxins such asfumonisin, can be fatal to horses and pigs, and are probable human carcinogens."Lower m...
Desert bees hedge their bets, wait for the wet
...opted a patient reproductive strategy. Desert bee larvae
patiently lie in wait in the desert soil for a cha...entomologist Bryan N. Danforth, not all the viable larvae
emerge in any one year of diapause, and their "coming out" is triggered by rain. Writing in the Oct...
Gobbling food helps threadsnakes avoid danger; in a snake-eat-ant world, it's survival of the fastest
...roughly one gram, survive largely on the pupae and larvae
of ants. "Theonly place you can find huge numbers of these are in ant nests," pointed out Kley, "so they search them out and rob the nest." Unlike their snakecousins, threadsnakes are chowhounds, tucking into meals at a rapid rate, with three or four...
NYU researchers find that genetically engineered corn releases insecticidal toxin into soil
...in is present in the plant's tissues and kills the larvae
of caterpillars that attack the plant. It was previously believed that the Bt toxin molecule was too large to be released through the plant's root system. Recently it was shown that the toxin is also present in the pollen of Bt corn and that when t...
For a fish, there's no place like home, say major studies, offering key information for fisheries management
...ed that after a 50-day planktonic larval duration, larvae
would have been swept tens or hundreds of kilomete...tous that the same techniques work to track marine larvae
by analyzing the trace quantities of metals. He explained that geochemists have demonstrated strong ...
Tube worms in deep sea discovered to have record long life spans
...ms grow very slowly over a longtime and that their larvae
need to settle on exposed substrates, which maynot be easy to find on the muddy floor of the Gulf," Bergquist explains."If you destroy one of these communities, it likely would take a long timeto come back if it comes back at all."...
Beetle uses fecal defense against predators
...Instead of leaving excrement lying around, as most larvae
do, this species has developed an overhead sewer system. The thatch grows as the larvae
metamorphoses, and for some reason that we don't understand, the fecal shield deters most predators ...
Blister beetles use sex and subterfuge to infiltrate bee's nests
...able mode of host-finding," newborn blister beetle larvae
of the species Meloe franciscanus mimic female bee.... This is the first reported instance of parasitic larvae
cooperating to mimic female host species, report San Francisco State University scientists in the Ma...
Chemical discovered that causes plant tumors
...s position it helps to prevent the emerging weevil larvae
from burrowing into the pea pod. It may also fall off, dry out or be eaten by predators, the researchers said, and it reduces the chance that the pea weevil will actually succeed in infesting a pea."It's pretty obvious this is a natural defense mecha...
Endangered butterfly needs proper habitat, special nectar
...e leaves in May. The eggs hatch in June. The young larvae
drop down into the soil a few weeks later and the following March, the caterpillars crawl up and eat the plant's young leaves. Then they molt several times before reaching the pupa stage and final metamorphosis into a butterfly. The butterflies live ...
Giant jellies invade Gulf of Mexico threatening shrimp fishery
...t these jellies will feed directly on the eggs and larvae
of the area's fish, shrimp and crabs. And doing so could have a serious effect on the commercial fisheries on the coast," says Monty Graham, senior marine scientist and Mississippi-Alabama Sea Grant-funded researcher at the Dauphin Island Sea Lab in...
Colorado set to fly biomedical experiments on September shuttle flight
...ntis on Sept. 19. In the fruit fly experiment, larvae
in differing stages of development will be placed ...nown as "reporter genes" will be injected into the larvae
prior to flight, making their nervous systems glow, said Stodieck, also an associate research profes...
Researchers receive federal funds to study marine organisms and potential products on oil platforms
...g this technique, scientists can determine whether larvae
that settle at platforms are the offspring of local adults there, or were produced elsewhere. "By sampling potential source populations directly, we hope to be able to specify the actual points of origin for organisms living on platforms," said Schmi...
ORNL instrument could spell doom for Asian beetles
... Beetles could be slowed or perhaps stopped with a larvae
detection system being developed by researchers at...re out boring into trees, where they lay eggs. The larvae
start eating the trees cambium, the layer that generates new cells, disrupting its nutrient-transpor...
Texas A&M University biologists are developing genetically modified rice resistant to insects and microbes
...es and lays its eggs on them. When the eggs hatch, larvae
grow and spend about a month chewing the roots." To protect rice plants from water weevils, Hall and his colleagues insert insect-killing genes in the seeds of rice plants. Ideally, when the plants grow, these genes produce insect-killing proteins in...
Two bees or not two bees? Researchers take first look at the genetic differences between queen and worker honeybees
... by environmental and nutritional influences cause larvae
to activate the genes necessary to fulfil their de...o establish exactly which genes were active as the larvae
developed. From the outset, the team found that those larvae
destined to become queen bees appeared...
Hessian fly genomics research will benefit wheat farmers, others
...cells from the insect. This causes the Hessian fly larvae
to starve. Almost everywhere one grows wheat youll find this insect, with the possible exceptions of Australia and Japan, he says. The fly is out there, and when environmental conditions are just right, such as a cool, wet spring and if you have a fi...
Scientists see early indications of lobster decline
...monitoring three different lobster life stages: 1) larvae
in the water, 2) newly settled individuals on the ...monitoring region. Similar trends were detected in larvae
in New Hampshire and new settlers in Rhode Island. The larvae
and settlement studies suggest widespr...
Scientists study life of economically important blue crab
...coast, to release the microscopic crab larvae. The larvae
go through a series of developmental stages in coastal waters before traveling to the estuaries. Blue crabs, which can grow to about 9 inches width, live in coastal waters of the Atlantic Ocean from Nova Scotia to Argentina. In the United States, abo...
All specialized insect predators not suitable for biological control
...e meal moth population. The virus infects the moth larvae
either when they eat infected food or the carcasse...ce to disease increases with age so that the older larvae
are immune to the virus. Also, viral infection while sometimes fatal can be sublethal allowing ...
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