Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 

Painted Apple Moth find a new arrival

Thursday 2 June 2005

Testing confirms Painted Apple Moth find a new arrival.

Scientific testing using two different techniques indicates that that the Painted Apple Moth (PAM) trapped at an Otahuhu container facility on 5 May 2005 was a new arrival, and not a remainder of the population in West Auckland that sparked eradication measures in 2002.

While scientific testing using DNA had previously been difficult because of technical challenges the recent use of a different gene region has proved successful. Additionally the use of a forensic tool being developed at Otago University was recently identified as an alternative option. The results from both testing regimes indicate that the PAM male caught on 5 May 2005 was a new arrival.

Biosecurity New Zealand Eradication Programmes Manager Ian Gear said the latest testing compared the ratios of certain stable isotopes of the Otahuhu moth with previous captures in Auckland, Australia and with moths bred in the two colonies established to produce females as part of the Auckland eradication programme.

“Testing indicated the Otahuhu moth was significantly different to moths already in New Zealand, and most similar to the Australian moths. The results also indicated the Otahuhu moth had pupated in a climate significantly more arid that Auckland. Stable isotopes for the main Auckland population were reasonably consistent, but were significantly different to an Australian moth tested,” says Ian Gear.

“As well as saying the Otahuhu moth is significantly different, the results for hydrogen and carbon isotopes in particular gave us some spectacular indications of the potential of the technique. Carbon isotope values indicate the diet of the larvae, and there were two clearly distinct groups. One indicated a diet of foliage; the other indicated the artificial diet fed to the colonies held in containment. It was possible to establish that the two colonies shared a similar diet, but had a different water source.

“It really is a useful technique that has great potential. While the information needed to indicate a definite point of origin is not available at this stage, it will be possible to build a database that will just about tell us the moth’s suburb, street address and passport number,” says Ian Gear.

The forensic stable isotope testing was done by the Dunedin company Iso-trace New Zealand Limited.

ENDS

© Scoop Media

 
 
 
Business Headlines | Sci-Tech Headlines

 

Media Mega Merger: StuffMe Hearing Argues Over Moveable Feast

New Zealand's two largest news publishers are appealing against the Commerce Commission's rejection of the proposal to merge their operations. More>>

Elsewhere:


Approval: Northern Corridor Decision Released

The approval gives the green light to construction of the last link of Auckland’s Western Ring Route, providing an alternative route from South Auckland to the North Shore. More>>

ALSO:


Crown Accounts: $4.1 Billion Surplus

The New Zealand Government has achieved its third fiscal surplus in a row with the Crown accounts for the year ended 30 June 2017 showing an OBEGAL surplus of $4.1 billion, $2.2 billion stronger than last year, Finance Minister Steven Joyce says. More>>

ALSO:

Mycoplasma Bovis: One New Property Tests Positive

The newly identified property... was already under a Restricted Place notice under the Biosecurity Act. More>>

Accounting Scandal: Suspension Of Fuji Xerox From All-Of-Government Contract

General Manager of New Zealand Government Procurement John Ivil says, “FXNZ has been formally suspended from the Print Technology and Associated Services (PTAS) contract and terminated from the Office Supplies contract.” More>>