Sentences with phrase «on cichlid»

Then there is the behavioural endocrinologist Richard Francis and his colleagues and their work on cichlid fish, which shows how social events regulate the gonads.

This was the conclusion of research conducted by Eawag and Bern University scientists on cichlid species in Lake Victoria, which suffered mass extinction following the introduction of the fish - eating Nile perch in the 1950s.

«The Nile perch, preying on cichlids, did indeed decimate stocks of these species in Lake Victoria,» says Matt McGee, who studied the ecology and evolution of fish - eating cichlids for his doctoral thesis at the University of California, Davis, and is now carrying out research on invasive fish species with Ole Seehausen at Eawag and Bern University.

Not exact matches

The first cichlid was described in 1864 after a botanist on one of David Livingstone's expeditions sent back some dried skins to the Natural History Museum in London for identification.

This dataset is based on the painstaking analysis of X-ray photographs of the skeletons of 763 individuals belonging to 227 modern cichlid species.

However, in cooperation with Dr. Ulrich Schliewen (Zoological State Collections, Munich), Reichenbacher and her team have assembled a unique database on the morphology of present - day cichlids, in which all the lineages found in Lake Tanganyika are represented.

Related Sites The Cichlid Fishes of Lake Malawi, Africa Patrik Bylund's page on Malawi cichlid evCichlid Fishes of Lake Malawi, Africa Patrik Bylund's page on Malawi cichlid evcichlid evolution

A cichlid in Africa's Lake Tanganyika uses patterns of facial stripes to distinguish individuals and keep tabs on them

A new study casts doubt on an old hypothesis, that cichlids reached multiple continents by swimming in place while an ancient supercontinent split up.

The costs of specialization are highlighted in an article published this week in Science on fish - eating cichlids in Lake Victoria which became extinct following the proliferation of the Nile perch, introduced around 60 years ago.

But while a number of cichlid species, feeding largely on crustaceans or plants, managed to adapt and recover, of the 100 or so species which, like the Nile perch, live on larger fish, more than 80 became extinct.

The hybridization of two divergent cichlid species enabled genetic variants to be recombined on a scale which would not otherwise be possible in a single population.

Depending on the species, cichlids may scrape algae from rocks, feed on plankton, crack open snail shells, forage for insect larvae, or prey on other fish, including their eggs or scales.

Reservoir of mutations enabled cichlid fish to adapt to varied environments; results shed light on mechanisms of vertebrate evolution

This hypothesis was experimentally tested by determining the effect of different diets on the head and jaw morphology of split broods of several species of haplochromine cichlids from Lake Malaŵi, Africa, and two substrate - spawning cichlids, one from the Old World, Tilapia mariae (Boulenger), and one from the New World, Herichthys cyanoguttatum (Baird and Girard).

«Our study reveals a spectrum of methods that nature uses to allow organisms to adapt to different environments,» said senior author Kerstin Lindblad - Toh, Scientific Director of Vertebrate Genome Biology at the Broad Institute: «These mechanisms are likely to be also at work in humans and other vertebrates, and by focusing on the remarkably diverse cichlid fishes, we were able to study this process on a broad scale for the first time.»

«Our study reveals a spectrum of methods that nature uses to allow organisms to adapt to different environments,» said co-senior author Kerstin Lindblad - Toh, Co-Director of SciLifeLab, scientific director of vertebrate genome biology at the Broad Institute and professor in comparative genomics at Uppsala University «These mechanisms are likely also at work in humans and other vertebrates, and by focusing on the remarkably diverse cichlid fishes, we were able to study this process on a broad scale for the first time.»

Tucked away in the Pacific Northwest with my wife Denise, a Border Collie named Aoife (pronounced EYE - fa), a guitar collection, and an increasing number of aquariums sporting a variety of fish (cichlids are my new favorites), I live for football season when I can cheer on the Oregon Ducks and my Super Bowl Champion Seattle Seahawks.

Like a YouTube channel called (majestic aquariums tv) there a owner who talks about killing pet Hybrid cichlids fishi can't stand him he calls them crap fish the title on his YouTube channel is crossbreeding turns into crap species people should protest against him on his channel.

If you browse around online, especially on Facebook, you will see a great many photos of exotic varieties of bettas, swordtails, guppies, glowfish, flowerhorns (cichlid hybrids), etc..

A mix of fish and other critters including African cichlids, tetras, livebearers, newts and so on are offered for sale in tanks that have all been decorated differently to demonstrate to customers how they can do their own tanks.

Many cichlids, especially Rift Lake species, hold the eggs in their mouths until the fry can swim on their own.

Are you interested in a historical perspective on, for example, «Soviet and U.S. Professional and Technical Manpower» or the «Breeding Behavior of Cichlids»?