News tagged with cichlid
Genetic conflict in fish led to evolution of new sex chromosomes
University of Maryland biologists have genetically mapped the sex chromosomes of several species of cichlid (pronounced "sick-lid") fish from Lake Malawi, East Africa, and identified a mechanism by which new ...
Oct 01, 2009 |
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Aquarium fishes are more aggressive in reduced environments, a new study finds
An angry glare from the family goldfish might not be the result of a missed meal, but a too-humble abode. Fish in a cramped, barren space turn mean, a study from Case Western Reserve University has found. Ornamental fishes ...
Sep 22, 2011 |
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Male African cichlid fish go from 'zero to 60' when mating calls, researchers find (w/ video)
(PhysOrg.com) -- In African cichlid fish society, only the dominant male reproduces. But Stanford researchers have found that if the dominant male disappears, a subordinate cichlid can rise to the procreative ...
Jul 14, 2011 |
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Female fish -- and humans? -- lose interest when their male loses a slugfest
You may think of your love for your mate as the noble emotion of a pure heart, but some primitive parts of your brain are taking a decidedly more pragmatic approach to the subject, according to Stanford biologists.
Nov 24, 2010 |
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Fish study turns colour vision theory inside out
(PhysOrg.com) -- Neurobiologists at the Queensland Brain Institute have found that animals are not always as brightly coloured as they seem - at least not to their counterparts.
Jun 22, 2010 |
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Fish facing reflections become feisty but fearful
Fish become feisty but fearful when facing themselves in a mirror, according to two Stanford biologists.
May 17, 2010 |
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Seeing how evolutionary mechanisms yield biological diversity
An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.
Dec 22, 2009 |
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B chromosomes affect sex determination in cichlid fishes
B chromosomes have a functional effect on sex determination in a species of cichlid fishes from Lake Victoria, according to a study by Japanese researchers to be published in open-access journal PLoS Genetics on August 18th, ...
Aug 18, 2011 |
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Bigger and bossier better for fish families
(PhysOrg.com) -- If you are spending the holidays with big Uncle Frank or bossy Aunt Minnie and wondering whether you would be better off with another family, spare a thought for the humble cichlid fish.
Dec 14, 2009 |
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The importance of being helpful -- Cooperative cichlids boost their own reproductive success
Subordinate individuals living within a group of vertebrates sometimes assist a more dominant pair by helping to raise the dominant pair's offspring and this has been shown to occur among subordinate female ...
May 15, 2009 |
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Infidelity produces faster sperms
Until now, it has been difficult to prove that fast-swimming sperms have an advantage when it comes to fertilizing an egg. But now a research team at Uppsala University can demonstrate that unfaithful females of the cichlid ...
Biology /
Jan 20, 2009 |
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Female fish abandoned by males to raise offspring on their own
Caring for children can be a tough job, particularly if you are a female cichlid fish.
Sep 20, 2010 |
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Lopsided fish show that symmetry is only skin deep
Putting function before form, members of the Perissodinus genus of fish have developed a hugely lopsided jaw that provides a distinct feeding advantage. Research published in the open access journal BMC Bi ...
Jan 25, 2010 |
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Tilapia feed on Fiji's native fish
The poster child for sustainable fish farming -- the tilapia -- is actually a problematic invasive species for the native fish of the islands of Fiji, according to a new study by the Wildlife Conservation ...
Jan 12, 2010 |
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Paternity of subordinates raises cooperative effort in cichlids
Cichlid male nannies help out, especially if they've been sneaking.
Oct 12, 2011 |
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