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Tag: "blue" at biology news

The diversity of marine life in the Gulf of Maine region is much greater than previously thought

...ke the diatoms, to gigantic, the largest being the blue whale. The smallest species, like the phytoplankto...oplankton also are the species that give otherwise blue oceans (reflecting the color of the sky) their varying colors. Two of the microscopic plant speci...

Uncovering sex-change secrets of black sea bass

..., assistant professor of zoology, peers into a big blue plastic tub. Inside, black sea bass circle slowly in the dim light. The converted barn is now an aquaculture research facility for the College of Life Sciences and Agriculture, and home to Berlinsky's latest research. Black sea bass feature prominen...

Research tracks whales by listening to sounds

...ific Northwest sound different than populations of blue whales that live in the western Pacific Ocean, and those sound different from populations of blue whales off Antarctica. And they all sound different than the blue whales off Chile. "The whales in...

Hopkins researchers develop new tool to watch real-time chemical activity in cells

...n on or off the PKA enzyme by looking for green or blue glowing cells. Of the 160 chemicals tested, three caused cells to turn on the switch and two others caused cells to turn off the switch. The 160 chemicals tested are from the Johns Hopkins Clinical Compound Library, a collection of about 3,300 c...

Mussels evolve quickly to defend against invasive crabs

...rab species may precipitate evolutionary change in blue mussels in as little as 15 years. The study, by UN...een these crabs and these mollusks." Crabs prey on blue mussels by crushing their shells. Freeman looked at the inducible defense ?shell thickening ?of b...

Choosy females make colourful males

...She examined two closely related species, one with blue males and the other with red males. Females prefer males of the right colour, blue or red, and within those categories they choose the most brightly coloured males. They do so for goo...

Study provides first look at the 'birth' of a retina cell

... that appears as fluorescent green when exposed to blue light. This fluorescent protein allows scientists to identify even a few cells that are destined to be rods at very early stages of development. "For the first time we were able to see retina cells during early development, allowing us to pinpoint t...

Nice guys do finish first in lizards' evolutionary race

...an eye on things. Research has focused on why the blue throats are willing to cast aside their own opport...me loners ?why not go it alone?" McAdam said. "The blue throats can set up new territories and be successful. That's the evolutionary puzzle that we needed ...

Researchers find that bumblebees' flower choice matters

...cies to the garden ?a native plant known as "great blue lobelia." So far, the bees continue their strong attraction to purple loosestrife. "This preference for purple loosestrife or other exotics could threaten reproduction of native plants and have devastating effects on ecosystems," Karron says. Wh...

Found -- the apple gene for red

...anins, the natural plant compounds responsible for blue and red colours in many flowers and fruits," says the leader of the CSIRO Plant Industry research team, Dr Mandy Walker. "Colour is a very important part of fruit marketing," she says. "If fruit doesn't look good, consumers are far less likely to b...

Blue eyes -- A clue to paternity

...is inherited as follows: If both parents have blue eyes, the children will have blue eyes. If both parents have brown eyes, a quarter of the children will have blue eyes, and three qu...

Batfish to the rescue!

...bit of reef, the rare batfishes emerged out of the blue and cleaned up most of the weed. "Worldwide, coral reefs are in decline," says Professor Dave Bellwood of CoECRS and James Cook University. "Commonly this takes the form of the coral being smothered by weedy growth, a transition known as a phase-...

Psst! Coffee drinkers: Fruit flies have something to tell you about caffeine

... the color of their bellies to see what they ate - blue indicating a preference for eating sugar, red indicating a preference for bitter caffeine, and purple indicating no preference. Flies missing the critical taste receptor protein Gr66a consumed the bitter caffeine solution to the same extent as the s...

Rising ocean temperatures, pollution have oysters in hot water

...or their commercial or recreational value, such as blue crabs, sheepshead, croaker and stone crab," Sokolova said. "Some of these species, such as blue crabs, use oyster beds and reefs as nursery areas and as feeding grounds." The oyster beds are also ...

Researchers identify neurons that assign value during learning

...vated simply by illuminating fruit fly larvae with blue light. This tool allowed the researchers to test whether such an activation of certain neurons can actually substitute for external stimuli--for example, reward or punishment--in an associative-learning experiment. The researchers found that if an od...

German researchers develop first non-invasive test to measure skin aging

...te tissues to emit light at shorter wavelengths -- blue in the case of collagen, and green in the case of ... collagen and elastin will then respond by glowing blue and green. Currently, dermatologists who want to check out the collagen network of a patient's der...

Triple threat: World fin trade may harvest up to 73 million sharks per year

...tion. "One of the most productive sharks is the blue shark, and it appears that the catch rate is near the maximum sustainable level," says Clarke. "But such assessments were not available for other, less productive shark species. It is quite likely that sustainable catch levels have already been exc...

By 2048 all current fish, seafood species projected to collapse

... clear to me that we hardly appreciate living on a blue planet," Worm said. "The oceans define our planet, and their fate may to a large extent determine our fate, now and in the future." ...

Microbes compete with animals for food by making it stink

...e because of texture, they fed stone crabs, lesser blue crabs and striped hermit crabs noodle-like test foods made from pureed forms of either the freshly thawed menhaden or the rotten bait. Researchers found that, no matter the rotten bait's texture, stone crabs avoided eating the rotted, microbe-laden f...

MIT: Pulsing light silences overactive neurons

...evised a technique to stimulate neurons by shining blue light on them, so with blue and yellow light the researchers can now exert exquisite control over the stimulation and inhibition...

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