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24 matches found for "cichlid"
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Genetic Conflict in Fish Led to Evolution of New Sex Chromosomes
In research published in the journal Science (October 1, 2009), Professor Thomas D. Kocher, Department of Biology, College of Chemical and Life Sciences; Reade Roberts, post-doctoral associate; and Je...
Life Sciences |
Read moreFish researcher demonstrates first 'non-visual feeding' by African cichlids
Most fish rely primarily on their vision to find prey to feed upon, but a University of Rhode Island biologist and her colleagues have demonstrated that a group of African cichlids feeds by using its ...
Life Sciences | Read moreScientists report gene network in early tooth development
The researchers say their finding lays out a core evolutionary list of molecules needed to make a tooth. These original dental genes, like a four-cylinder Model T engine to the marvels of modern autom...
Life Sciences | Read moreInfidelity produces faster sperms
Increased competition leads to both faster and larger sperms, and the research findings now being published in the scientific journal PNAS, Proceedings of the National Academy of Sciences, thus show t...
Life Sciences | Read moreNew species thanks to different ways of seeing
In many species, the male’s fortunes in the mating stakes are decided by a conspicuous breeding dress. A study of brightly coloured fish has now demonstrated that this has less to do with aesthetics t...
Life Sciences | Read morePiddling fish face off threat of competition
Animal behaviourists have known for some time that the urine of freshwater fish is a vehicle for reproductive hormones that act in the water as pheromones, affecting the behaviour and physiology of me...
Life Sciences | Read moreNewfound Ancient African Megadroughts May Have Driven Evolution Of Humans And Fishes
Learning that now-lush tropical Africa was an arid scrubland during the early Late Pleistocene provides new insights into humans' migration out of Africa and the evolution of fishes in Africa...
Earth Sciences | Read moreLift-off for Foton microgravity mission
Nearly 9 minutes later, the Russian Foton-M3 spacecraft separated from the rocket's upper stage and was inserted into a 300 km orbit that will carry it around the Earth once every 90 minutes. The...
Physics and Astronomy | Read moreAdaptation to Parasites Drive African Fishes Along Different Evolutionary Paths
The two species (Pseudotropheus emmiltos and Pseudotropheus fainzilberi ) are found in the north western part of Lake Malawi. Until now, the only known difference between them was the color of their d...
Life Sciences | Read moreBiocontrol of invasive water hyacinth contributes to socioeconomic and health improvements in Africa
Two insect biocontrol species, weevils in the genus Neochetina, were used, along with mechanical removal, to control the highly invasive water hyacinth, which has also plagued waterways in the souther...
Ecology, The Environment and Conservation | Read moreFish can determine their social rank by observation alone
The study, published in the Jan. 25 edition of the journal Nature, is based on a unique experiment with cichlids (SIK-lids), small territorial fish from Africa. "In their natural habitat, male ci...
Studies and Analyses | Read moreChoosy females make colourful males
Evolutionary theory predicts that species can diverge if different females choose different characteristics in males. Yet females often pay attention to traits that reveal something about the quality ...
Life Sciences | Read moreAfrican amphibians make extreme parental sacrifice: the skin off their backs
Just as baby mammals depend on their mothers ’ milk, the young of the African amphibian Boulengerula taitanus nourish themselves by stripping off and eating the fat-rich outer layer of...
Ecology, The Environment and Conservation | Read moreNew study shows animal family tree looking bushy in places
The animal kingdom’s family tree is beginning to look a little bushy. Two decades ago, with the advent of methods to look at the family relationships of different or...
Studies and Analyses | Read moreChanges to embryos can elicit change in adult fish
Researchers uncover genetic foundation of fish jaws In a study illustrating the apparent linkages between the evolutionary development and embryonic development of species, r...
Life Sciences | Read more
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