Tag: "larvae" at biology news
French Researchers Breed Flightless Ladybirds As Pest-Killers
...e both larvaeand adults feed on other insects. The larvae
are already used to protect growingcrops. The trouble starts when the insects grow wings. When an American specieswas introduced onto lime trees in the Netherlands, for instance, most of the 30million adults flew away in just three weeks. And...
Lake George Water Is Death On Zebra Mussel Larvae
... Polytechnic Institute have found thatzebra mussel larvae
die in water from New York's scenic Lake George. ...are needed to determine exactly what causeshealthy larvae
to die within a week when placed in water from the 32-mile "Queenof American Lakes." Older mussels h...
Common Cannibals, A New Study Examines The Role That Intraspecific Predation Plays In Determining The Dynamics Of A Population
... adultbeetles mainly consume eggs and pupae, while larvae
consume eggs. When the beetles were separated acc...numbers. This resulted in a smaller population of larvae
asthese eggs hatched. This smaller population did not have a large cannibalisticimpact on the subse...
Clemson Fire Ant Research Uses Biological Approach
... The scientists introduced infected fire ant larvae
into a number of testmounds this summer. The mounds are being monitored every two months over atwo-year period to track fire ant population activity, using satellitetechnology. Researchers are overlaying the ant population data with otheractivity, ...
Native Gray Ants Play Positive Role In Valley Peach Orchards
... is the most importantpredator of peach twig borer larvae
in peaches and nectarines. Peach twig borer, in its damaging larval stage, is a tiny worm thatfeeds on peach, nectarine, almond, plum and prune shoots or fruit . The pesthas about 30 natural enemies, which by themselves generally do not redu...
Marine Fish Culture By John W. Tucker, Jr., Ph.D.
...the rearing environment,reproduction, nutrition of larvae
and nutrition of juveniles and adults. Thisbook also includes reviews of current rearing knowledge for bait food andornamental marine fish, by family....
Dyed In The Silkworm: Researchers Develop Novel Way To Produce Colored Silk
...roteins. Silkworms, or more precisely, the larvae
of the moth Bombyx mori, spinsilk to form a cocoon...ookan approach in which they infected the silkworm larvae
with a geneticallyengineered insect virus that carried an altered version of a silk protein. Theyfus...
Maggots Could Help Address Problems Of Antibiotic Resistance
...nfected or necrotic wounds Lucilia sericata, the larvae
of the common greenbottle fly, could help to addre...s. Thomas et al write that the mechanisms by which larvae
kill bacteria in wounds are not fully understood, but explanations may include the production of nat...
Invading Pests Harm People, Plants And Animals
...ckfly, to destroy yellow starthistle. The insect's larvae
feed inside the seedhead of starthistle, destroying its seeds. Serendipitously, another insect thatlooks like the peacock fly has been accidentally introduced and is significantlymore widespread and more effective against yellow starthistle than the ...
Parasites, Not Pollution, Responsible For Some Frog Deformities, As Reported In The 30 April Issue Of Science
...en kill thesnail. Back in the water, the trematode larvae
next seek out tadpoles and burrowinto their hind leg regions. Later, aquatic birds prey on the grown frogs andthe parasites then have a third host, where they reproduce sexually. Finally,the eggs reach another pond via the birds' feces and the cycle ...
Enzyme Required To Prolong Life In Worms Identified By Researchers At Columbia; Key Enzyme Appears To Protect Animal Cells From Oxidative Damage
...combat Alzheimer's. Past work on the dauer larvae
suggested that a series of genes mightcontrol dauer formation and longevity. Professor Chalfie said there is as yetno evidence for any particular gene that controls life span either in worms orin humans, and that the Columbia research shows that cyt...
Engineered Corn Can Kill Monarch Butterflies
...edside effect: Its pollen kills monarch butterfly larvae
in laboratory tests,according to a report by Corne...make contactwith corn pollen, Losey says. Monarch larvae
feed exclusively on milkweedbecause it provides protection against predators. The plant containscar...
Journalists put 'hands on science'
...termining "bands" on gels, or screen in drosophila larvae
forgenetically induced mutations. There were also introductions to other modern techniques of biochemistry and molecular biology.Participants were shown how cell compartments can be visualized using electron microscopes, or how to visualize secretion...
Salamanders may one day monitor degradation in small streams
...chers looked at the distribution of life stages -- larvae
and juveniles,show how degradation alters reproduc...ivelyunpolluted and fragmented streams had lots of larvae
and juveniles. AMD streamshad no larvae
at all and the episodic streams had few larvae. Areas withou...
Mobile DNA sequences could be the cause of chromosomal mutations during the evolution of species
...ant sized chromosomesin the salivary glands of its larvae
which are relatively easy to view with amicroscope. This characteristic make it an excellent source for studyinggenetic changes that take place in the course of evolution. One of the mosttypical genetic changes in the Drosophila type species are ...
Mosquitofish threaten amphibians
...itofishdevour tadpoles just as readily as mosquito larvae
and so can decimate nativeamphibians. "Handing out...mosquitofish eat amphibians such as Californianewt larvae
in Santa Monica Mountain streams. But these studies have beencriticized because the mosquitofish wer...
Herbivores, pull up a chair to the table: salt marsh plants at higher latitudes more palatable, according to new study
...stern herbivores. Leaf beetles, grasshoppers, moth larvae
and crabswere used to test palatability of the plants. In all cases, the herbivorespreferred the northern plants. "One difficulty with this kind of research is that it must be done on a largespatial scale," said Pennings, "but Mark Bertness, my colla...
Mosquito fish may be wiping out amphibians
...er delicacies.In 1996, he showed that they eat the larvae
of the California newt (Tarichatorosa), but critic...ested whether the fish eatamphibians when mosquito larvae
are also available. They placed two mosquitofish in tanks containing either mosquito larvae, tadpole...
Genetic engineered crop studies questioned
...inst European corn borers, kills monarch butterfly larvae
inlaboratory tests. While Shelton and Roush note ...aboratory study showed high mortalityamong monarch larvae
that ingested genetically engineered pollen, an Iowa StateUniversity study by Laura Hansen and John ...
Researchers say hormones are key to evolution of insect metamorphosis
...omplete metamorphosis, spend their juvenilelife as larvae
that bear no resemblance to the adults. What allows the changefrom, say, a caterpillar into a butterfly is the way a group of insect hormones,juvenile hormones (JH) and ecdysteroids, interact during embryonic, larval andpupal stages, the researchers ...
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