8,303 results
8,303 results for: Fish
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- Humans
Letters from the March 20, 2004, issue of Science News
What’s the difference? I thought that the X and Y chromosomes determined gender in animals, but I see no mention of them in “When to Change Sex” (SN: 1/17/04, p. 40: When to Change Sex). Does this mean that on a genetic basis, males and females in these organisms are identical? Neil H. MurphyWalnut Creek, […]
- Humans
Letters from the March 27, 2004, issue of Science News
Nobody’s board The article “Danger on Deck?” (SN: 1/31/04, p. 74: Danger on Deck?), or at least part of it, could have been titled “Danger on Dock” or maybe “Danger under Dock.” After reading about how chromated-copper arsenate (CCA) is leached from the wood, I began wondering how it affects aquatic organisms. Many fish, especially […]
- Animals
New candidates for smallest vertebrate
Two recent scientific papers have described fish species that could, depending on the definition, be the world's smallest known vertebrate.
- Animals
Killer Flatworm: New species hunts with puffer fish toxin
A newly described marine flatworm from Guam hunts with the same toxin that a puffer fish uses. With video.
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Transplant reroutes cells from sperm to eggs
Fish cells destined to become sperm can become eggs when transplanted into larvae.
- Earth
Species-aid budget looks fishy
State and federal governments spent $1.4 billion in 2004 on conserving endangered and threatened species, with one-third of that sum going to protect fish.
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Pigging Out Healthfully: Engineered pork has more omega-3s
Scientists have created pigs that sport much higher concentrations of omega-3 fatty acids in their tissues than normal pigs do.
- Animals
Worm can crawl out of predators
A parasitic worm can wriggle out through a predator's gills or mouth if the predator eats the worm's insect host. With video.
- Health & Medicine
Dementia off the Menu: Mediterranean diet tied to low Alzheimer’s risk
People 65 years of age and older who eat a Mediterranean-style diet that's rich in plant matter and fish and low in saturated fat are less likely than their peers to develop Alzheimer's disease.
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Mutation blocks fat absorption
A newly discovered gene in zebrafish seems to prevent the animals from absorbing fat molecules from their diets.
- Earth
Drug Overflow: Pharmaceutical factories foul waters in India
A treatment plant in India that processes waste from drug factories feeds enormous amounts of antibiotics and other drugs into local waterways.
