Sentences with word «killifish»

In a new paper published in BMC Evolutionary Biology, researchers found that changes in a receptor protein, called the aryl hydrocarbon receptor 2 (AHR2), may explain how killifish in New Bedford Harbor evolved genetic resistance to PCBs.
The results suggest that evolution of resistance in independent populations of killifish converges on the same target gene.
African turquoise killifish live in temporary ponds of water in Zimbabwe and Mozambique that disappear with the dry season.
«Solving an evolutionary puzzle: Atlantic killifish thriving in highly polluted water.»
With researchers from Louisiana and South Carolina, the scientists found that Gulf killifish embryos exposed to sediments from oiled locations in 2010 and 2011 show developmental abnormalities, including heart defects, delayed hatching and reduced hatching success.
Despite their healthy appearance, there could be unknown negative costs for the New Bedford Harbor killifish associated with the resistance to PCBs.
Next, the authors compared their stickleback results to previously published opsin genes in two related species of fish (bluefin killifish and black bream), separated from sticklebacks by millions of years, that had also adapted to blackwater and clearwater habitats.
Genome sequencing reveals how killifish evolved to thrive in extremely polluted estuaries in the US in well under 60 years
Gulf killifish embryos exposed to sediments from oiled locations show developmental abnormalities, including heart defects, delayed hatching and reduced hatching success.
Killifish live brutally short and efficient lives, sexually maturing in 3 weeks and dying within a few months.
The findings, posted online in advance of publication in the journal Environmental Science and Technology, are part of an ongoing collaborative effort to track the impacts of the Deepwater Horizon oil spill on Gulf killifish populations in areas of Louisiana that received heavy amounts of oil.
The researchers have tracked the impact of the oil on killifish since the Deepwater Horizon spill occurred in April 2010.
The researchers collected Gulf killifish from an oiled site at Isle Grande Terre, La., and monitored them for measures of exposure to crude oil.
In looking at killifish DNA from various lineages, one might expect to see a certain uniformity among them.
Now that the team has generated the tools necessary to rapidly manipulate killifish, the model organism can be used to screen for genes and drugs that slow or reverse aging and age - related diseases.
«Fast aging and time machine: Genome of the Turquoise killifish sequenced
When observing the colorful Turquoise killifish swimming in its aquarium, it is difficult to believe that it can serve as a model system for human aging; but it does.
Whitehead said it is possible that some of the healthier, less impacted killifish could buffer the effects of the spill for the population as a whole.
The study found that female killifish that avoid mating with males of a closely related species also are less likely to mate with males of their own species — if those males come from an unfamiliar population.
Only one fish species, the mangrove killifish, is known to self - fertilise.
In early studies, resveratrol was linked to extending the lifespans of fruit flies and tropical killifish.
Retailers that decide to stock killifish may have to look long and hard for a supplier or breeder.
Companies that supply live food for fishermen usually offer red wrigglers (earthworms), night crawlers (larger earthworms), shiners (cold - water minnow species) and minnows (usually killifish of a variety of species).
The same can be said for most killifish, which are certainly the original «micro-species.»
Just because an employee loves killifish doesn't mean he can sell them in the store.
Killifish lend themselves well to this environment.
Using Atlantic killifish (Fundulus heteroclitus), the researchers examined whether mitochondrial - nuclear interactions alter the frequency of alternative forms of a gene that arise by mutation, called alleles, for over 11,000 nuclear DNA sequence variations within a population of the fish with mixed ancestry.
Similarly, the protein variants that are most common at the nearby reference sites are much less common in the New Bedford Harbor killifish
Stanford University scientists have found a new middle ground with the development of a genome - editing toolkit to study aging in the naturally short - lived African turquoise killifish.
They also exposed killifish embryos in the lab to sediment collected from oiled sites at Isle Grande Terre within Barataria Bay in Louisiana.
Whitehead said the report's findings may predict longer - term impacts to killifish populations.
Other species that share similar habitats with the Gulf killifish, such as redfish, speckled trout, flounder, blue crabs, shrimp and oysters — may be at risk of similar effects.
In a new study, researchers at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science examined how the interaction of two genomes in animal cells — the mitochondrial and nuclear genomes — interact to affect adaptation of the Atlantic killifish to different temperatures.
It turns out that when Lins and colleagues in the lab of genome scientist Joanna Kelley sequenced the genome of the killifish, also known as the mangrove rivulus, Kryptolebias marmoratus, or just plain «Kmar,» it had a lot going on.
Yet the killifish is unfazed by a wide variety of nasty situations, as if begging the world to hit it with its best shot.
Taking advantage of recently developed CRISPR / Cas - based genome editing techniques, the researchers generated the platform needed for the killifish to be used experimentally.
Some of the killifish mutants have already shown promise for studying aging and disease.
«A new model organism for aging research: The short - lived African killifish
«These killifish mutants, like their human counterparts, have defects in blood, gut, and display fertility problems.»
«One of our killifish mutants recapitulates, but in a rapid manner, a human disease called Dyskeratosis congenita, which is due to deficits in a complex involved in maintaining the end of chromosomes, or telomeres,» says lead author Dr. Itamar Harel, a postdoctoral research fellow in genetics.
Researchers have discovered that young poo, teeming with gut microbes from 6 - week - old African turquoise killifish (closely related to the bluefin killifish, above), can dramatically prolong the lives of older fish, according to Nature.
The Turquoise killifish (Nothobranchius furzeri) is the shortest - lived vertebrate that can be kept under laboratory conditions.
The killifish is an environmental indicator species, or a «canary in the coal mine,» used to predict broader exposures and health risks.
Killifish are abundant in the coastal marsh habitats along the Gulf Coast.
That means some killifish could have been hit hard by the spill while others were less impacted.
Atlantic killifish — common estuarine fishes about three inches long — are not only tolerating the toxic conditions in the harbor, they seem to be thriving there.
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