Featured Research

from universities, journals, and other organizations

Discovering a diamondback moth: Overlooked diversity in a global pest

Date:
August 29, 2013
Source:
Pensoft Publishers
Summary:
A new species of diamondback moth has been discovered in Australia. It was previously overlooked because of its similarity with typical diamondback moths.

This is a male of the new species, Plutella australiana. Size is 7 mm.
Credit: Jean-François Landry; CC-BY 3.0

The tiny diamondback moth (scientific name: Plutella xylostella) gets its common name from the array of diamond shapes along the margin of its forewing. Despite their diminutive size, the caterpillars of the diamondback moth exert tremendous damage on many crops including cabbage, broccoli, and crucifers at large. More than $1 billion is spent globally each year in efforts to control damage by this moth, reflecting its amazing capacity to evolve resistance to both insecticides and biological control agents.

A global study of DNA barcodes by two Canadian entomologists revealed unexpected complexity: the occurrence of two distinct species among Australian diamondback moths. One of them is the well-known diamondback pest which is found nearly everywhere. The other is a new species, named Plutella australiana by Dr. Jean-François Landry of the Canadian National Collection in Ottawa and Dr. Paul Hebert of the University of Guelph, Ontario, the authors of the study. Their results have been published in the open access journal ZooKeys. The new species has so far been found only in Australia, where it occurs together with typical Plutella xylostella.

The new species was initially detected by Dr. Hebert in a general survey of Australian moths aimed at developing a library of DNA barcodes representing all the species of the fauna. Subsequent study of the anatomy revealed significant, previously unsuspected, differences in internal reproductive organs between typical diamondbacks and the new species.

DNA barcodes are short fragments of DNA used to identify organisms. They provide genetic traits that complement traditional morphology/anatomy. DNA barcoding is increasingly used in applications to identify species, especially cryptic organisms.

Although the new species of diamondback moth has now gained recognition and a name, key aspects of its biology remain uncertain. For example, what is its role as a crop pest in Australia and does it pose a threat to agriculture?


Story Source:

The above story is based on materials provided by Pensoft Publishers. The original story is licensed under a Creative Commons License. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jean-Francois Landry, Paul Hebert. Plutella australiana (Lepidoptera, Plutellidae), an overlooked diamondback moth revealed by DNA barcodes. ZooKeys, 2013; 327: 43 DOI: 10.3897/zookeys.327.5831

Cite This Page:

Pensoft Publishers. "Discovering a diamondback moth: Overlooked diversity in a global pest." ScienceDaily. ScienceDaily, 29 August 2013. <www.sciencedaily.com/releases/2013/08/130829110417.htm>.
Pensoft Publishers. (2013, August 29). Discovering a diamondback moth: Overlooked diversity in a global pest. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2013/08/130829110417.htm
Pensoft Publishers. "Discovering a diamondback moth: Overlooked diversity in a global pest." ScienceDaily. www.sciencedaily.com/releases/2013/08/130829110417.htm (accessed July 25, 2014).

Share This




More Plants & Animals News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Boy Attacked by Shark in Florida

Boy Attacked by Shark in Florida

Reuters - US Online Video (July 24, 2014) — An 8-year-old boy is bitten in the leg by a shark while vacationing at a Florida beach. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) — The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Tyrannosaur Pack-Hunting Theory Aided By New Footprints

Tyrannosaur Pack-Hunting Theory Aided By New Footprints

Newsy (July 24, 2014) — A new study claims a set of prehistoric T-Rex footprints supports the theory that the giant predators hunted in packs instead of alone. Video provided by Newsy
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) — Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
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:
from the past week

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