La Niña weather event could lead to pest increase

The Bureau of Meteorology has declared the first La Niña event since 2010 to 2012

What is La Niña? 

La Nina is a natural cycle which is part of El Nino-Southern Oscillation (ENSO). It is caused by increased winds east to west that change ocean currents to draw cool waters from deep within the ocean. This helps increase surface water temperature in western pacific and to the north of Australia. The results of this is more air, cloud development and rainfall. The Bureau of Meteorology has declared the first La Niña event since 2010 to 2012 and can last between 1 to 3 years.

Differences between El Niño and La Niña

El Niño - refers to the above-average sea-surface temperatures that periodically develop across the east-central equatorial Pacific. It represents the warm phase of the ENSO cycle.

La Niña - refers to the periodic cooling of sea-surface temperatures across the east-central equatorial Pacific.

What are the effects of La Nina?

Increased rainfall In Australia the six wettest years have been during La Niña since 1900, with severe floods experienced in 1955,1988,1998, and 2010. Eastern Australia can experience up to 20% more rainfall than the long term average.

* Increased rainfall across most of Australia

* Cooler daytime temperatures, Warmer overnight temperatures

* Shift in temperature extremes

* Increased cyclone numbers

This image compares La Niña 2010 to 2012 to the average long term rainfall.

Reducing risk from Vector Borne Diseases, especially from Mosquitoes

Reports suggest that climatic changes have influences on vector-borne viruses/diseases; with importance around mosquitoes. Mosquitoes require access to stagnant water in order to breed and humid conditions for viability.  ENSO affects flooding and water pooling on surfaces.

Actions to be considered for everyone

Remove debris from guttering and ensure correct drainage is present around roofing areas. 

Pots and any containers that could hold water should be removed from outside areas or turned upside down if possible. The smallest amount of water can begin the mosquito breeding cycle.

Integrated Mosquito Management

Rentokil offers specific IMM (Integrated Mosquito Management) treatments which include detailed surface treatments along with mosquito recommendations to reduce conducive conditions. These are available for Residential and Commercial premises. Services target both adults and larval stages.

Australia is now moving towards a COVID normal with more emphasis on outdoor dining and home gathering for families. Mosquito treatments should be at the forefront for everyone.

Flying Insects on the rise

If food and garbage build-up during long periods of wet weather, this becomes a breeding ground for flies. Flies carry diseases and are a nuisance, especially to food-related and hospitality businesses. Flies can damage brand reputation in a matter of seconds, and pose health risks if linked with the food supply chain.

Ensure that your business has adequate fly control methods in place. Rentokil offers a range of LED insect light technology, named Lumnia. Choose the appropriate units for your business, from front-of-house discreet solutions, through to warehouse and logistics sizing. 

Movement of rodent populations

Other increases can be expected during the coming months for a range of other pests including rodents. When potential flooding occurs, there is an increased movement of rodent populations to otherwise never experienced areas. 

It’s time to be proactive and speak to your trusted Rentokil partner about effective rodent solutions for your business. Protect your workplace with connected rodent solutions from the PestConnect range - providing complete peace of mind and data insights all year round. If you have identified a rodent infestation issue, get in touch today for a 123 Knockdown program. 

La Nina, and pest management

Don’t be plagued by the presence of unwanted pests post rainfall and flooding. Chat with the experts today, at Rentokil.

Related articles

3 ways Rentokil is helping businesses during the coronavirus crisis | Rentokil

The Bureau of Meteorology has declared the first La Niña event since 2010 to 2012

5 FAQs about disinfection services

The Bureau of Meteorology has declared the first La Niña event since 2010 to 2012

2nd November 2020
Kathryn Birett
Own Time, Take Control

Form submitted successfully

IoT and the Food Supply Chain

Is Australia ready to embrace the Internet of Things (IoT) revolution? Download our white paper summarising key findings and opportunities in the food industry.