altmarius

cultură şi spiritualitate

Do our fruit bats carry the virus behind COVID-19?

Pictures of Australian fruit bats are accompanying news reports on the source of COVID-19.
By Clare Woolston  April 23, 2020   Reading Time: 4 Minutes

BECAUSE OF THESE reports, Australians living close to large colonies of fruit bats, otherwise known as flying-foxes, might be wondering if they carry deadly coronaviruses.

Flying-foxes don’t have the COVID-19 virus

SARS-Cov-2 is the virus behind the COVID-19 pandemic. There are many reports the virus jumped from bats, possibly to another species, then to humans because of wildlife trade at a market in Wuhan, China.

Although this is a leading theory, the reality is the scientific community is still tracking down the wildlife source. Alison Peel, a bat health expert with the Environmental Futures Research Institute at Griffith University, says, “at the moment we don’t exactly know what the origin of SARS-CoV-2 is”.

What we do know is several Australian bat species carry coronaviruses. Do not fear, though. Keep in mind the common cold is a coronavirus.

Those found in Australian bats are not ones that cause Severe Acute Respiratory Syndrome, Middle Eastern Respiratory Syndrome and COVID-19.

“There is no evidence that SARS-Cov-2 or related viruses are present in Australian wildlife and that includes bats,” says Alison.

https://www.australiangeographic.com.au/wp-content/uploads/2018/08/flying-foxes-500x294.jpg 500w, https://www.australiangeographic.com.au/wp-content/uploads/2018/08/... 768w, https://www.australiangeographic.com.au/wp-content/uploads/2018/08/... 700w, https://www.australiangeographic.com.au/wp-content/uploads/2018/08/... 1200w, https://www.australiangeographic.com.au/wp-content/uploads/2018/08/... 120w, https://www.australiangeographic.com.au/wp-content/uploads/2018/08/... 1000w, https://www.australiangeographic.com.au/wp-content/uploads/2018/08/... 1400w" sizes="(max-width: 250px) 100vw, 250px" />Related: Flying fox foreplay takes the Spiderman kiss to a whole new level

Living next to flying-fox colonies is not high risk

Before COVID-19, some people already feared our flying-foxes because of Australian Bat Lyssavirus and Hendra virus.

Contracting these diseases is extremely rare. In humans, there have only been three cases of Australian Bat Lyssavirus and seven cases of Hendra virus.

You contract Australian Bat Lyssavirus if an infected animal bites you. If you don’t handle bats, there is no risk.

With Hendra, you contract it from an infected horse that in turn got it from food infected with bat urine, saliva or birth products. You cannot get it directly from an infected bat. Andrew Peters, a wildlife health expert with Charles Sturt University, says, “if you vaccinate your horse, you are safe”.

What about those other coronaviruses in Australian bats? Will neighbourhoods with flying-fox colonies known as ‘camps’ suddenly start experiencing outbreaks of deadly diseases? This is highly unlikely.

The reason for this, Alison explains, is “a set of conditions must be satisfied for a virus to successfully shift out of its normal reservoir host into other species.” The wildlife trade often has these conditions.

“Flying-fox camps are natural roosting locations. They are very different from the cramped, stressful and unhygienic conditions that animals in the wildlife trade are in,” she says.

https://www.australiangeographic.com.au/wp-content/uploads/2020/04/shutterstock_727428184-500x294.jpg 500w, https://www.australiangeographic.com.au/wp-content/uploads/2020/04/... 768w, https://www.australiangeographic.com.au/wp-content/uploads/2020/04/... 1000w" sizes="(max-width: 900px) 100vw, 900px" />Related: This video shows ‘bat midwives’ may exist and it’s amazing

Wildlife trade may have been a critical factor in the COVID-19 pandemic

Sixty-six per cent of the first COVID-19 cases were traced to a market in Wuhan. The market houses different species of live, wild animals close together, with humans frequently handling them.

“Wild animals that are captured, transported and held in these conditions are very stressed. Stress is one of the key drivers of increasing the intensity and shedding of a viral infection,” says Andrew.

This environment creates opportunities for viruses to transmit between species.

However, we may never know if the market was the source. Alison explains: “Our best chance of understanding it is to do more intensive sampling in both bats, pangolins and other species within the region of China where the pandemic emerged.”

https://www.australiangeographic.com.au/wp-content/uploads/2020/04/shutterstock_696611080-1800x1013.jpg 1800w, https://www.australiangeographic.com.au/wp-content/uploads/2020/04/... 500w, https://www.australiangeographic.com.au/wp-content/uploads/2020/04/... 768w, https://www.australiangeographic.com.au/wp-content/uploads/2020/04/... 1536w, https://www.australiangeographic.com.au/wp-content/uploads/2020/04/... 2048w, https://www.australiangeographic.com.au/wp-content/uploads/2020/04/... 1000w" sizes="(max-width: 900px) 100vw, 900px" />Related: This is why bats can carry deadly disease with little effect on the...

Endangered flying-foxes are moving into cities to find food

Because of COVID-19 reporting, our misunderstood flying-foxes’ reputation may get worse.

Grey-headed flying-foxes, an endangered species, are moving into cities and establishing camps. This can cause distress to people through noise, odour and disease transmission fears.

But spare a thought for flying-foxes. They have lost their winter food source. Land-clearing combined with natural cyclical changes between El Nino and La Nina is causing both chronic and acute food shortages for them.

The flying-foxes traditional winter food source is winter-flowering eucalypt forests. These have been over-cleared.  

“We think that the amount of forest has gotten so critically low that a proportion of bats are choosing to stay within urban environments and feed on reliable food sources,” says Alison.

“Many people think that flying-foxes are increasing in numbers, but they’re not. Instead of being out in the bush where you can’t see them most of the time, many are now living near our houses and feeding on our trees and weeds in gardens,” she says.

pipistrelle extinctionhttps://www.australiangeographic.com.au/wp-content/uploads/2018/09/CI-pipistrelle-photo-by-Chris-Tidemann-500x294.jpg 500w, https://www.australiangeographic.com.au/wp-content/uploads/2018/09/... 768w, https://www.australiangeographic.com.au/wp-content/uploads/2018/09/... 700w, https://www.australiangeographic.com.au/wp-content/uploads/2018/09/... 1200w, https://www.australiangeographic.com.au/wp-content/uploads/2018/09/... 120w, https://www.australiangeographic.com.au/wp-content/uploads/2018/09/... 1000w, https://www.australiangeographic.com.au/wp-content/uploads/2018/09/... 2048w" sizes="(max-width: 250px) 100vw, 250px" />Related: ‘The first irretrievable failure of the EPBC Act’: the case of the ...

Flying-foxes play a crucial role in keeping our forest ecosystems healthy

Each night flying-foxes cover vast distances, winging through the air in search of food. This ability to travel many kilometres “means they can connect pockets of forest that are increasingly fragmented by development,” says Alison.

“Like many species of insects and birds, flying-foxes are pollinators. Without them, we wouldn’t have healthy forests that support other species like koalas and that have significant economic value.”

https://www.australiangeographic.com.au/wp-content/uploads/2018/06/Cassowary_head_frontal-500x294.jpg 500w, https://www.australiangeographic.com.au/wp-content/uploads/2018/06/... 1000w, https://www.australiangeographic.com.au/wp-content/uploads/2018/06/... 768w, https://www.australiangeographic.com.au/wp-content/uploads/2018/06/... 700w, https://www.australiangeographic.com.au/wp-content/uploads/2018/06/... 120w, https://www.australiangeographic.com.au/wp-content/uploads/2018/06/... 600w" sizes="(max-width: 250px) 100vw, 250px" />Related: 10 Australian keystone endangered species

We need to change how we relate to the natural world to prevent future pandemics

The COVID-19 outbreak is a mirror, starkly reflecting our impact on the natural world. Andrew explains: “When we look at the emerging pandemics in human history, it is really through the way we change our relationship with wildlife that has led to those.

“If we want to deal with this in the long-term it isn’t so much about worrying about the wildlife in our urban areas; it is more about us starting to relieve some of the pressure that is leading to large scale ecological disruption.

“It is this interference with the natural environment that leads to that disruption and spillover of viruses into people.”

To reduce ecological disruption for our flying-foxes, the best thing we can do is to “restore the food sources that they use in winter. That is a win-win for us and them,” says Andrew.

If you would like to see this win-win situation realised, join a local bush restoration group or donate to organisations like Landcare.

If you would like further information on coronaviruses in Australian wildlife, Wildlife Health Australia (WHA) has released a factsheet on this topic.

Vizualizări: 11

Adaugă un comentariu

Pentru a putea adăuga comentarii trebuie să fii membru al altmarius !

Alătură-te reţelei altmarius

STATISTICI

Free counters!
Din 15 iunie 2009

199 state 

(ultimul: Sint Maarten)

Numar de steaguri: 263

Record vizitatori:    8,782 (3.04.2011)

Record clickuri:

 16,676 (3.04.2011)

Tari lipsa: 43

1 stat are peste 600,000 clickuri (Romania)

1 stat are peste 90.000 clickuri (USA)

1 stat are peste 40,000 clickuri (Moldova)

1 stat are peste 20,000  clickuri (Italia)

2 state au peste 10.000 clickuri (Franta,  Germania)

6 state au peste 5.000 clickuri (Olanda, Belgia, Marea Britanie, Canada, UngariaSpania )

10 state au peste 1,000 clickuri (Polonia, Rusia,  Australia, IrlandaIsraelGreciaElvetia ,  Brazilia, Suedia, Austria)

50 state au peste 100 clickuri

24 state au un click

Rating for altmarius.ning.com 

altmarius.ning.com-Google pagerank,alexa rank,Competitor

DE URMĂRIT

1. ANTICARIAT ALBERT

http://anticariatalbert.com/

2. ANTICARIAT ODIN 

http://anticariat-odin.ro/

3. TARGUL CARTII

http://www.targulcartii.ro/

4. PRINTRE CARTI

http://www.printrecarti.ro/

5. MAGAZINUL DE CARTE

http://www.magazinul-de-carte.ro/

6 ANTICARIAT PLUS

http://www.anticariatplus.ro/

7. DEPOZITUL DE CARTI 

http://www.calinblaga.ro/

8. CARTEA DE CITIT

http://www.carteadecitit.ro/

9. ANTICARIAT ON-LINE
http://www.carti-online.com/

10. ANTICARIATUL DE NOAPTE

 http://www.anticariatuldenoapte.ro/

11. ANTICARIATUL NOU

http://www.anticariatulnou.ro

12. ANTICARIAT NOU

https://anticariatnou.wordpress.com/

13. ANTICARIAT ALEPH

https://www.anticariataleph.ro/

14. ANTIKVARIUM.RO

http://antikvarium.ro

15.ANTIKVARIUS.RO

https://www.antikvarius.ro/

16. ANTICARIAT LOGOS

http://www.anticariat-logos.ro/

17. ANTICARIAT.NET

http://www.anticariat.net/informatii-contact.php

18. TIMBREE

www.timbree.ro

19. FILATELIE

 http://www.romaniastamps.com/

20 MAX

http://romanianstampnews.blogspot.com

21. STAMPWORLD

http://www.stampworld.com

22. LIBMAG

https://www.libmag.ro/oferta-carti-polirom/?utm_source=facebook-ads-7-99-polirom&utm_medium=banner-facebook&utm_campaign=7-99-polirom-facebook&utm_content=new-3

23. DAFFI'S BOOKS

https://www.daffisbooks.ro/

24. MAGIA MUNTELUI

http://magiamuntelui.blogspot.com

25. RAZVAN CODRESCU
http://razvan-codrescu.blogspot.ro/

26.RADIO ARHIVE

https://www.facebook.com/RadioArhive/

27.EDITURA UNIVERSITATII CUZA - IASI

http://www.editura.uaic.ro/produse/colectii/documenta/1

28. EDITURA ISTROS

https://www.muzeulbrailei.ro/editura-istros/

29 ORIZONTURI CULTURALE

http://www.orizonturiculturale.ro/ro_home.html

30. SA NU UITAM

http://sanuuitam.blogspot.ro/

31. MIRON MANEGA
http://www.certitudinea.o

32. NATIONAL GEOGRAPHIC ROMANIA

https://www.natgeo.ro/revista

33. KORUNK

http://ideakonyvter.ro/53-korunk

Insignă

Se încarcă...

Anunturi

Licenţa Creative Commons Această retea este pusă la dispoziţie sub Licenţa Atribuire-Necomercial-FărăModificări 3.0 România Creativ

Note

Erfolgsgeschichte Taunusbahn

Creat de altmariusclassic Sep 13, 2013 at 11:02am. Actualizat ultima dată de altmariusclassic Sep 13, 2013.

Schnell und Steiner

Creat de altmariusplus Iun 19, 2013 at 1:59pm. Actualizat ultima dată de altmariusplus Iun 19, 2013.

Grosse Kunstfuehrer zum Schnell &Steiner

Creat de altmariusclassic Dec 21, 2012 at 6:55pm. Actualizat ultima dată de altmariusclassic Dec 21, 2012.

Hermann Hesse -bucher

Creat de altmariusscience Nov 7, 2012 at 5:47pm. Actualizat ultima dată de altmariusscience Nov 7, 2012.

Grosse Kunstfuehrer zum Schnell & Steiner - 1

Creat de altmariusclassic Oct 8, 2012 at 7:52pm. Actualizat ultima dată de altmariusclassic Oct 8, 2012.

Neuerscheinungen zum Schnell &Steiner - 3

Creat de altmariusclassic Oct 8, 2012 at 7:50pm. Actualizat ultima dată de altmariusclassic Oct 8, 2012.

Neuerscheinungen zum Bohlau - 1

Creat de altmarius Aug 29, 2012 at 7:30am. Actualizat ultima dată de altmarius Aug 29, 2012.

Neuerscheinungen zum Schnell & Steiner - 2

Creat de altmarius Aug 29, 2012 at 7:26am. Actualizat ultima dată de altmarius Aug 29, 2012.

Neuerscheinungen zum Schnell & Steiner

Creat de altmariusplus Mar 14, 2012 at 3:01pm. Actualizat ultima dată de altmariusplus Mar 14, 2012.

Grosse Kunstfuhrer: Maribor

Creat de altmariusconcurs Feb 22, 2012 at 1:08pm. Actualizat ultima dată de altmariusconcurs Feb 22, 2012.

© 2020   Created by altmarius.   Oferit de

Embleme  |  Raportare eroare  |  Termeni de utilizare a serviciilor