Tag: "fishes" at biology news
One-way processes speed degradation of coral reefs
...fishes. Economic demand for rare and wild-caught fishes
fosters investment in ever more sophisticated fishing equipment. And as expectations about coral reef productivity decrease, efforts to restore reefs are undermined. Birkeland proposes that organizations concerned about coral reefs should develop int...
Global warming's impact on US plants, animals determined from review of dozens of studies
...f study have revealed that warmer-water species of fishes
and intertidal species, such as starfish and sea anemone, now dominate waters near Monterey, Calif., that once were known for colder-water counterparts. Scientists generally agree that global warming over the past century has increased average tempe...
Scientists advocate genomic sequencing of 'living fossil'
...formative phylogenetic position between ray-finned fishes
and tetrapods. Fleshy, lobed fins, which are one ... and the lungfish the only two living lobe-finned fishes
are related to important evolutionary progenitors of land vertebrates. However, the lungfish geno...
Revisiting the vertebrate invasion of the land
...nitrogen metabolism, modern tropical air-breathing fishes
exhibit a variety of strategies to survive on land...litated the invasion of the terrestrial habitat by fishes
during evolution. These articles are from two merged symposia ("How to Live Successfully on Land If...
Study in Royal Society journal on first evidence for magnetic field detection in sharks
...are used to chase for very mobile prey like flying fishes
associated with sub surface predators such as tunas. To spot prey patches at distance birds climb regularly to altitudes of 20-50m and when returning to the colony they climb to altitudes up to 500m to avoid attacks by frigatebirds along the coasts. ...
Predator fish heat their eyes to track prey
...ordfishes, tunas, and many sharks are unique among fishes
in that they possess physiological mechanisms that warm their eyes. A new investigation reported this week sheds important light on the purpose of warming the eyes and the advantage that "warm eyes" confer on ocean predators. Swordfishes, which hunt ...
Evolution of classical polyandry: three steps to female emancipation
...n care of the eggs (the reasons why differ between fishes
and birds). Secondly, females become able to lay more eggs than a male can accommodate. Thirdly, females compete with each other to lay clutches for several males. Successful polyandrous females have more offspring, thereby spreading characteristic...
New species of coral discovered off southern California
...arge invertebrates play as deep-water habitats for fishes
and other marine life." "What is really remarkable," said biologist Mary Yoklavich from NOAA Fisheries, "is that these spectacular large colonies have managed to go unnoticed while living in the backyard of the largest urban area on the West Coast."...
Marine researchers deliver blueprint for rescuing America's troubled coral reefs
...alfway toward ecological extinctionLarge predatory fishes
continue to decrease, reefs are increasingly dominated by seaweed and alarming diseases have emerged." In 1990, the U.S. government established the Florida Keys National Marine Sanctuary to protect the reef--third longest in the world behind Australi...
Scientists discover how fish evolved to float at different sea depths
... Berenbrink investigated the mechanism that allows fishes
to keep the swimbladder inflated with gas even at ...air at the surface of the water. Another group of fishes
has a closed swimbladder that is inflated through gas secretion even when they are in high water pre...
An (ecological) origin of species for tropical reef fish
...ics of one group of Western Atlantic tropical reef fishes
(wrasses, genus Halichoeres) throughout their range and were surprised by what they found. Rocha explains: "I was interested in the Amazon barrier. The Amazon and Orinoco's freshwater and sediment discharge off of northeastern South America is so ...
Scientists' pied piper approach may have found Nemo faster
...s research has shown that the larvae of coral reef fishes
develop in open seas, away from reefs where predat...ts in Australia and New Zealand, said: "Coral reef fishes
live in dangerous times because of overfishing and damage to their natural habitat. To manage fish e...
The Academy of Natural Sciences & team discover new catfish species
...expected discovery of this enigmatic new family of fishes
in one of the world's most biogeographically complex regions emphasizes how little we know about Mesoamerica's biotic legacy and conservation value," Lundberg said. "This find reminds us that the most basic scientific inventory of Earth's biodiversit...
Study in Royal Society journal on holly as an indicator of climate change
...ealed that nightly patterns in sound production by fishes
were higher on the three nights following the hurr...cted as a stimulus to increase calling activity in fishes
or if this behavior was the result of a longer-term cycle that may have taken place without the occu...
Deep-sea jelly uses glowing red lures to catch fish
... vulnerable to even larger animals. A few deep-sea fishes
and squids have glowing organs that look like lure...iology. Haddock's work suggests that some deep-sea fishes
may not only see red light, but routinely use it in finding food....
Living fossil roams the seas
...ent are the coelacanth's genes from those of other fishes
and tetrapods? And can the species be useful as a tool for vertebrate comparative genomics?"...
Coral reef fish larvae settle close to home
...the maintenance of stable populations. Most marine fishes
start their lives as tiny larvae, smaller than a millimeter, and any thought of tagging them to track their movements was once considered impossible. However, researchers Geoff Jones from James Cook University (Australia), Serge Planes from the Unive...
Forsyth scientists identify a gene responsible for facial diversity
...cal therapies for facial traumas." African cichlid fishes
have evolved highly specialized modes of feeding through extensive adaptations of their jaws. This study, published in the current issue of Proceedings of the National Academy of the Sciences, (PNAS), explores the molecular basis of alternate jaw typ...
Study uses stream fish as indicators of water quality
...f a stream based on the diversity and abundance of fishes
we find there," said Hitt, who is working with ass...assess stream quality but does not consider stream fishes
except for consumption advisories due to toxins in fish flesh. Hitt and Angermeier will investigate ...
'Fish with chips' reporting from ocean top highlights at Census of Marine Life mid-point
...o-plankton,phytoplankton, zooplankton, unexploited fishes
andinvertebrates, commercially important fishes
andinvertebrates, seabirds, marine mammals, and turtles. While everything cannot be known in detail ...
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