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 April 18, 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 April 18, 2014).

Share This



More Plants & Animals News

Friday, April 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Great British Farmland Boom

The Great British Farmland Boom

Reuters - Business Video Online (Apr. 17, 2014) — Britain's troubled Co-operative Group is preparing to cash in on nearly 18,000 acres of farmland in one of the biggest UK land sales in decades. As Ivor Bennett reports, the market timing couldn't be better, with farmland prices soaring over 270 percent in the last 10 years. Video provided by Reuters
Powered by NewsLook.com
Flamingo Frenzy Ahead of Zoo Construction

Flamingo Frenzy Ahead of Zoo Construction

AP (Apr. 17, 2014) — With plenty of honking, flapping, and fluttering, more than three dozen Caribbean flamingos at Zoo Miami were rounded up today as the iconic exhibit was closed for renovations. (April 17) Video provided by AP
Powered by NewsLook.com
Change of Diet Helps Crocodile Business

Change of Diet Helps Crocodile Business

Reuters - Business Video Online (Apr. 16, 2014) — Crocodile farming has been a challenge in Zimbabwe in recent years do the economic collapse and the financial crisis. But as Ciara Sutton reports one of Europe's biggest suppliers of skins to the luxury market has come up with an unusual survival strategy - vegetarian food. Video provided by Reuters
Powered by NewsLook.com
Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) — A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
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