Parasitic worms 'read' the bodys immune condition and reproduce accordingly
...lop inside certain snails. They leave the snail as larvae and can penetrate the skin of people wading in the water. Within weeks they grow inside the blood vessels of the body and produce eggs. Some of the eggs travel to the bladder or intestines and are passed into the urine or feces. In one species of s...Flower chemicals attract some insects but deter others with toxic warning
...ologists devised feeding studies. They offered to larvae of the Utheisa ornatrix moth (also called the rattlebox moth) filter-paper discs soaked with chemicals from plants the insects normally relish. Then the caterpillars were offered paper disks also soaked with DIP chemicals. The ultraviolet-absorbin...The ecological consequences of 'promiscuous' boating
...transit. The researchers also found zebra mussel larvae in every area where water is stored on a boat, including the engine cooling system, bilge water, and bait buckets used in fishing. However, because of the low probability of establishing new populations from introductions of larvae, this is not thou...Study shows deoxygenating ballast water can prevent invasive species and ship corrosion
...ion technique and examined the oxygen tolerance of larvae from three known nuisance invasive species now fou...en environment was toxic to essentially all of the larvae after only two to three days while major ocean crossings by cargo vessels typically take weeks. Tam...Protein may be target for new cancer drugs
...emained unknown. Bellens group analyzed mutant fly larvae that lacked functional Hrs in order to try to understand the proteins role in endocytosis during development. Using electron microscopy, the researchers revealed how specific cells in the flies stomachs absorbed a fluid tracer. The studies showed tha......anti-worm medicine called ivermectin. Onchocerca larvae deposited by the fly's bite burrow into the skin, where they mature and eventually send out tiny offspring called microfilariae that can migrate through the skin to the eye. When the microfilariae die, they trigger a severe immune response, resulting...Endangered freshwater mussels saved
... syringe to harvest the larvae. They then deposit larvae onto the gills of the type of fish that particular...ing juvenile stage. Biologists can deposit mussel larvae from one female onto hundreds of fish, whereas only about a dozen fish can become hosts for the larv...Sea Grant news: Shipworms, ozone, hurricanes
...h greatly reduced shells at the end. The floating larvae bore tiny holes on the surface of woody materials, and the adults use their shells to create larger tunnels inside the wood. Damage is often discovered too late to do anything except replace the infected structures. To protect and rehabilitate bear...Extensive research survey confirms life on Earth now being affected by global warming
...ch have a short lifespan and whose transition from larvae to adult is closely related to temperature," Post says. "Large mammals, in contrast, carry throughout their longer lifetimes the effect of climate conditions that prevailed since they were born, affecting their lives in more complicated ways." The...Widespread amphibian deformities caused by parasite
... the parasitic trematode Ribeiroia ondatrae, whose larvae infect amphibians near the base of hind limbs and form cysts that lead to limb malformations. What is now becoming more clear is the elaborate life cycle of this parasite and the mechanisms by which that may affect amphibians. The life cycle at vari...Stanford researchers create diabetic fruit flies in lab
...e insulin-producing cells in the fly larvae. These larvae were significantly smaller than their normal count...elop into full-fledged flies. What's more, the fly larvae that lacked insulin had high blood-sugar levels, comparable to human diabetes. When Rulifson looked ...University of Southern Mississippi's 'safari' targets baby bluefin tuna
...day (through Saturday) searching for newly hatched larvae of the giant bluefin tuna. Bluefin tuna can ... At several days of age, however, giant bluefin larvae are not giant; they are about the size of a pencil eraser. Not much is known about exactly where blu...URI oceanographers test method to control metamorphosis in summer flounder
Flounders start life as larvae that live and drift in the coastal ocean. During m...orbed by the flounder. Thiourea was added when the larvae were one month old. This prevented completion of metamorphosis and inhibited settlement, both of whi......les in two ways: the adults eat the leaves and the larvae eat -- and so destroy -- developing flowers and se...an 75% of the flower heads either contained weevil larvae or had signs of larval damage. Worse, the weevil reduced seed set in infested flower heads by 98%: i...Study offers a rare view of how species interactions evolve
... on their abdomens. After the eggs hatch, the moth larvae feed on the plant's seeds. In extensive field surveys, the researchers found the moths associated with every population of L. parviflorum they sampled. Further studies focused on 12 sites in contrasting habitats, including open grassland, ponderosa ...Sea Grant asking anglers to collect sea lampreys for Lake Champlain study
...treams to spawn and die in the spring. The hatched larvae stay in stream sediments for four to seven years before migrating to the lake where they become parasitic on other fishes. Since 1957 a lampricide has been applied to tributary streams to reduce lamprey populations throughout the Great Lakes. This co...Deformed frogs form when parasites and pesticides combine
...hen they leave the snail, in the form of trematode larvae called cercariae, they swim around in the pond in ...ne with a fine screen that prevented the trematode larvae from entering the enclosure, and the other with a larger-mesh screen that allowed the trematode larv...Deformed frogs form when parasites and pesticides combine
...hen they leave the snail, in the form of trematode larvae called cercariae, they swim around in the pond in ...ne with a fine screen that prevented the trematode larvae from entering the enclosure, and the other with a larger-mesh screen that allowed the trematode larv...Computational geneticists revisit a mystery in evolution
...he Dr. Morris Herzstein Professor in Biology. From larvae incubated in a lab at 18 or 28 degrees Celsius, for instance, similar-looking flies will develop, even though chemical reactions are twice as fast at hotter temperatures than colder ones. The developmental pathway and end products (traits) seem immun...Genetically modified crops may pass helpful traits to weeds, study finds
... repelled moths and butterflies, whose larvae are prime sunflower predators. The scientists focused on the second generation of wild sunflowers that contained the transgene. The experimental populations were grown a...