Featured Research

from universities, journals, and other organizations

Unknown species and larval stages of extremely long-legged beetles discovered by DNA test

Date:
October 18, 2011
Source:
Pensoft Publishers
Summary:
The unknown larval stages and a new species of the curious spider water beetles were described after their assignment by DNA sequences. These taxonomic works are groundwork for the development of water quality bioindicator systems in the tropics.

This is a Philippine Spider Water Beetle in frontal view.
Credit: H. Freitag (2009)

The research program AQUA Palawana has been exploring the unique freshwater biodiversity of the Philippine Island and biosphere reserve of Palawan for more than a decade. Scientists from the Senckenberg Museum of Zoology Dresden and the Bavarian State Collections of Zoology in Munich have now described larvae and a new species of the curious spider water beetles (Ancyronyx) from this biodiversity hotspot.

Related Articles


Their study was realized in cooperation with the Palawan Council for Sustainable Development and the De La Salle University Manila.

The scientists conducting this study, Hendrik Freitag and Michael Balke, used mitochondrial DNA, which should be identical in all developmental stages in a species, to assign the previously unknown larval stages to adult imagines. This method was very useful because the outside appearance of immature and mature stages of holometabolous insects look completely different and would not allow an easy assignment to each other.

The studied insects of the genus Ancyronyx have extremely long legs, often accompanied by an eye-catching cross-like elytral colour pattern, so that they remind of spiders. In point of fact they are "Riffle Beetles" (Elmidae) that are able to breathe through a plastron, a microfilm of air around their body surface that is microscopically enlarged by setose structures. This enables them to remain permanently under water. Such beetles are often highly sensitive to water pollution and are therefore greatly valued as bioindicators. The researchers aim at providing basic knowledge and identification tools for tropical species that are potentially useful as freshwater bioindicators.

One of newly described Philippine species, Ancyronyx punkti -- named after the German environmental NGO punkt e.V. -- was recently chosen by BIOnet International for a campaign highlighting the relevance of taxonomy to society which was presented at the tenth COP meeting of the Convention on Biological Diversity in Nagoya, Japan 2010.

The new discoveries from the Philippines lead to the assumption that the region is the actual diversity centre of the genus. By now, ten of the 18 described species are known solely from the Philippines, of which most are endemic to the country or even to single islands.


Story Source:

The above story is based on materials provided by Pensoft Publishers. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hendrik Freitag, Michael Balke. Larvae and a new species of Ancyronyx Erichson, 1847 (Insecta, Coleoptera, Elmidae) from Palawan, Philippines, using DNA sequences for the assignment of the developmental stages. ZooKeys, 2011; 136 (0): 47 DOI: 10.3897/zookeys.136.1914

Cite This Page:

Pensoft Publishers. "Unknown species and larval stages of extremely long-legged beetles discovered by DNA test." ScienceDaily. ScienceDaily, 18 October 2011. <www.sciencedaily.com/releases/2011/10/111018095122.htm>.
Pensoft Publishers. (2011, October 18). Unknown species and larval stages of extremely long-legged beetles discovered by DNA test. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2011/10/111018095122.htm
Pensoft Publishers. "Unknown species and larval stages of extremely long-legged beetles discovered by DNA test." ScienceDaily. www.sciencedaily.com/releases/2011/10/111018095122.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Research on Bats Could Help Develop Drugs Against Ebola

Research on Bats Could Help Develop Drugs Against Ebola

AFP (Nov. 28, 2014) In Africa's only biosafety level 4 laboratory, scientists have been carrying out experiments on bats to understand how virus like Ebola are being transmitted, and how some of them resist to it. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
New Dinosaur Species Found in Museum Collection

New Dinosaur Species Found in Museum Collection

Reuters - Innovations Video Online (Nov. 27, 2014) A British palaeontologist has discovered a new species of dinosaur while studying fossils in a Canadian museum. Pentaceratops aquilonius was related to Triceratops and lived at the end of the Cretaceous Period, around 75 million years ago. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Tryptophan Isn't Making You Sleepy On Thanksgiving

Tryptophan Isn't Making You Sleepy On Thanksgiving

Newsy (Nov. 27, 2014) Tryptophan, a chemical found naturally in turkey meat, gets blamed for sleepiness after Thanksgiving meals. But science points to other culprits. Video provided by Newsy
Powered by NewsLook.com
Classic Hollywood Memorabilia Goes Under the Hammer

Classic Hollywood Memorabilia Goes Under the Hammer

Reuters - Entertainment Video Online (Nov. 26, 2014) The iconic piano from "Casablanca" and the Cowardly Lion suit from "The Wizard of Oz" fetch millions at auction. Sara Hemrajani reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins