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Ditemukan  ngengat diamondback  :  keanekaragaman yang  terabaikan dalam hama global 

Date:

August 29, 2013

Source:

Pensoft Publishers

Summary:

Sebuah spesies baru dari ngengat Diamondback telah ditemukan di Australia . Hal ini sebelumnya diabaikan karena kesamaannya  dengan ulat ngengat ....read more

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.

................................

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 journalZooKeys. 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

http://www.sciencedaily.com/releases/2013/08/130829110417.htm

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