Monday September 23, 2019
Home Lead Story Dinosaurs evo...

Dinosaurs evolved frills and horns to attract mates: Study

Selection makes many organisms evolve different attributes for sex. For example, peacocks maintain elaborate tails and fruit flies perform dances

0
//
Dinosaurs' faces
Dinosaur. Wikimedia
  • The dinosaurs evolved frills and thorns to attract mates
  • Researchers found this especially true for the species Triceratops and Styracosaurus
  • These are called as ornamental traits

The elaborate frills and horns of a group of dinosaurs including Triceratops and Styracosaurus might have evolved to attract mates, not as a mechanism to recognise each other as earlier believed, says a study.

It has been suggested that different species that live in the same location may evolve features in order to distinguish one another to help avoid problems such as hybridisation, where two individuals of different species produce infertile or unfit offspring.

The specimens reveal that primitive mammals glided in air.
Dinosaurs evolved frills to attract males. Pixabay

To test this hypothesis the researchers from Queen Mary University of London examined patterns of diversity in the ornamentation of 46 species of ceratopsians, the horned dinosaurs, but found no difference between species that lived together and those that lived separately.

A previous research paper from the same university found that the frill in one ceratopsian species, Protoceratops, may have evolved under sexual selection. The new findings, published in the journal Proceedings of the Royal Society B, appear to add evidence to this across the entire group.

“If sexual selection is indeed the driver of ornament evolution in ceratopsians, as we are increasingly confident it is, demonstrating it through different lines of evidence can provide a crucial window into tracing its effects over potentially huge time-scales,” said lead author of the new study Andrew Knapp.

Also Read: Fossil of Patagotitan Discovered in Argentina: The Heavyweight Champion of all Dinosaurs weighs 76 Tons

Selection makes many organisms evolve different attributes for sex. For example, peacocks maintain elaborate tails and fruit flies perform dances. The researchers also found evidence that ornamental traits seemed to evolve at a much faster rate than other traits.

“We have shown that species recognition, one of the commonest explanations, is unlikely to be responsible for the diversity or origin of ornamentation in this group,” Knapp added. IANS

Next Story

Researchers Report Two Newly Discovered Species of Electric Eels in South America

The researchers collected 107 eels in four countries and found differences in their DNA, along with minor physical variations

0
Researchers, Species, Electric Eels
A man holds an electric eel which he found in front of his flooded house in Sao Paulo. VOA

Researchers report two newly discovered species of electric eels in South America, one of which can deliver a bigger jolt than any other known animal.

The researchers collected 107 eels in four countries and found differences in their DNA, along with minor physical variations.

One species had the ability to generate 860 volts of electricity, more than the 650 volts discharged by the only previously identified type of electric eel.

While 250 species of fish in South America generate electricity, only electric eels use it to stun prey and for self-protection.

Researchers, Species, Electric Eels
Researchers report two newly discovered species of electric eels in South America, one of which can deliver a bigger jolt than any other known animal. Pixabay

Study leader C. David de Santana of Smithsonian National Museum of Natural History says the discovery illustrates the importance of protecting and studying the Amazon rainforest area.

Also Read- Google May Launch Next Models of its Pixel Smartphones in October

The study was published this week in the journal Nature Communications. (VOA)