New African crocodile species discovery


This video is called Paleoworld: Ancient Crocodiles.

And now, from prehistory to today.

From Wildlife Extra:

New discovery more than doubles known crocodile species

Study reveals how little is still known about crocodiles’ biogeography, proves invaluable to conservationists

December 2013: Research has revealed that there are more than twice as many species of African crocodile, perhaps the continent’s most iconic creature, as previously believed. A recent study by the University of Florida has now found there are at least seven distinct species of African crocodile – long thought of as just three known species.

The UF team’s latest discovery, led by then-doctoral candidate Matthew H. Shirley, is that what had been believed to be a single species of slender-snouted crocodile, is actually two.

The findings, which have major implications for policy-makers and conservationists, are outlined in a paper published online last week by Proceedings of the Royal Society B.

The results emphasise how little is known about crocodile biogeography, or how species are distributed geographically over time, in Western and Central Africa, said Jim Austin, a co-author on the paper and Shirley’s doctoral adviser at UF.

In the paper, Shirley and his team describe that West African populations of the slender-snouted crocodile do not share the same genetic or specific physical features as those populations in Central Africa – and they estimate the two populations have been separated from each other geographically for at least 7 million years.

Biologists and conservation agencies need to know the precise taxonomy of animals and plants to avoid allocating precious conservation funding and effort working to protect species that may be more plentiful than believed, or – as in this case – ensuring that those resources can be directed toward species whose numbers are lower than estimated.

This video says about itself:

Male slender-snouted crocodile bellowing to a female. Later, they mated. Notice the very characteristic posture: tail raised, head oblique.

The Wildlife Extra article continues:

Now that researchers know the West African slender-snouted crocodile is not the same species as its Central African cousin, Shirley said, that changes its standing.

“The West African slender-snouted crocodile is actually among the three or four most endangered crocodiles in the world,” said Shirley. “By finally recognising that it is a unique species, we are in a much better position to advance its conservation and ensure its future.”

Crocodile species are often difficult to identify by physical characteristics alone. Most non-scientists can barely tell the difference between an alligator and a crocodile, in fact. The UF team looked at skull characteristics of slender-snouted crocodiles from museum collections and were able to find consistent differences between the species, Austin said.

See also here.

About these ads

6 thoughts on “New African crocodile species discovery

  1. Pingback: Jurassic crocodiles, new research | Dear Kitty. Some blog

  2. Pingback: Nile crocodiles, thought extinct there, found again in the Sahara | Dear Kitty. Some blog

  3. Pingback: Big Triassic reptiles discovery in Texas | Dear Kitty. Some blog

  4. Pingback: Crocodiles can climb trees, new research | Dear Kitty. Some blog

  5. Pingback: Zebra escapes from five lions, video | Dear Kitty. Some blog

  6. Pingback: Conservation awards for 2014 | Dear Kitty. Some blog

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s