Skip to content

SANParks.org Forums

View unanswered posts | View active topics






Post new topic Reply to topic  Page 52 of 64
 [ 958 posts ]  Go to page Previous  1 ... 49, 50, 51, 52, 53, 54, 55 ... 64  Next
Author Message
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Tue Aug 07, 2012 12:43 pm 
Offline
Senior Virtual Ranger
Senior Virtual Ranger
User avatar

Joined: Wed Jan 10, 2007 3:44 pm
Posts: 2756
Location: Welkom
FAC Member (2012)
It causes severe irritation.

_________________
Give thanks for unknown blessings already on its way---African saying
Member nr 8512
Cheetah supporterPURIST and proud thereof


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Wed Aug 08, 2012 9:02 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Posts: 20804
Location: Midway between the infinite and the infinitesimal!
Award: Musketeer of the Year, Quiz Whiz of the Year (2012)
Yes, but why?

_________________
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Sun Aug 12, 2012 7:56 pm 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14211
Location: Pretoria, RSA
The silk is impregnated with caterpillar hair, which is highly irritating when it touches the skin.

_________________
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Mon Aug 13, 2012 12:26 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Posts: 20804
Location: Midway between the infinite and the infinitesimal!
Award: Musketeer of the Year, Quiz Whiz of the Year (2012)
Indeed IB. :clap: :thumbs_up: IT.

_________________
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Mon Aug 20, 2012 4:51 pm 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14211
Location: Pretoria, RSA
Give the behavioural reason why you often find flying insects which have fallen in to large bodies of water.

_________________
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Mon Aug 20, 2012 4:59 pm 
Offline
Senior Virtual Ranger
Senior Virtual Ranger
User avatar

Joined: Wed Jan 10, 2007 3:44 pm
Posts: 2756
Location: Welkom
FAC Member (2012)
A wild guess here.
a) They don't have stamina to cross large bodies of water and then drop into it,
b) Because they fly in erratic directions and not in a strait line (to avoid being caught) they land in the water and can't escape.

_________________
Give thanks for unknown blessings already on its way---African saying
Member nr 8512
Cheetah supporterPURIST and proud thereof


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Tue Aug 21, 2012 1:09 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14211
Location: Pretoria, RSA
Excellent try ... but no, not correct.

_________________
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Tue Aug 21, 2012 2:08 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Posts: 20804
Location: Midway between the infinite and the infinitesimal!
Award: Musketeer of the Year, Quiz Whiz of the Year (2012)
I remember reading about this some time ago. Doesn't it have something to do with the reflection of light on the water, which confuses an insect into thinking that the sky is actually where the water is? If the sky is now in the wrong place, the poor little insect will flip itself upside-down to correct for this, and so fall into the water. Once it comes into contact with the water's surface tension, it is very difficult for it to extricate itself. I think that this can happen both at night and in the daytime, as long as there is a reasonable reflection on a body of water.

_________________
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


Last edited by onewithnature on Wed Aug 22, 2012 1:19 am, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Tue Aug 21, 2012 11:05 pm 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar

Joined: Wed Aug 31, 2005 12:28 am
Posts: 14211
Location: Pretoria, RSA
:thumbs_up: You are now IT!

_________________
Imberbe = Combretum imberbe = Leadwood = Hardekool = The spirit of the Wildernis!

Want to know more about the SANParks Honorary Rangers? Visit www.sanparkshr.org


One positive deed is worth more than a thousand critical words.


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Tue Aug 28, 2012 11:43 pm 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Posts: 20804
Location: Midway between the infinite and the infinitesimal!
Award: Musketeer of the Year, Quiz Whiz of the Year (2012)
Why do dung beetles roll their balls obsessively in a straight line, even pushing it over obstacles in the way (even though considerable energy may be wasted by so doing) rather than navigating around the obstacle?

_________________
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Mon Sep 10, 2012 9:09 pm 
Offline
User avatar

Joined: Thu Apr 26, 2012 11:22 pm
Posts: 218
Location: Bela-Bela, Limpopo
If they don't, chances are that they could go in a circle and end up at the same dung pile where other dung beetles could then pirate his dung ball.

_________________
2013. . . . . Okavango?


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Tue Sep 11, 2012 2:56 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Posts: 20804
Location: Midway between the infinite and the infinitesimal!
Award: Musketeer of the Year, Quiz Whiz of the Year (2012)
Thank you answering Roan. :thumbs_up: Yes, there is indeed the factor of getting as far away from the competition as quickly as possible. :clap: However, there is another reason why they move in a straight line; it doesn't make sense to struggle over an obstacle for a protracted period while the competition is catching up - why not just go around the obstacle?

_________________
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Mon Sep 17, 2012 7:04 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Posts: 20804
Location: Midway between the infinite and the infinitesimal!
Award: Musketeer of the Year, Quiz Whiz of the Year (2012)
No-one has got the answer yet ...

_________________
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Tue Oct 09, 2012 5:35 am 
Offline
Forum Assistant
Forum Assistant
User avatar

Joined: Fri Sep 08, 2006 6:06 am
Posts: 2961
Location: Boons NW
FAC Member (2013)
Not sure what you looking for here OWN, but it must have something to do with the fact that they actually "push" the dung ball backwards with their hind legs??

_________________
Rose
*Travel Slowly *Stop Often *Learn as much as you can *Relax and Enjoy!


Top
 Profile  
 
 Post subject: Re: Insect Quiz (RV)
Unread postPosted: Wed Oct 10, 2012 7:10 am 
Offline
Distinguished Virtual Ranger
Distinguished Virtual Ranger
User avatar
Award: Quiz Whiz of the Year (2013)
Joined: Tue Dec 23, 2008 5:22 am
Posts: 20804
Location: Midway between the infinite and the infinitesimal!
Award: Musketeer of the Year, Quiz Whiz of the Year (2012)
Rosemary, the pushing backwards does help to keep the ball in a straight line, as well as increase leverage, but there is one particular thing that the beetles use to keep themselves in a straight line.

_________________
EVERYBODY'S TR!
TR: A NEW DAY IS S-OWN
TR: NECTAREAN NICETIES OF THE NORTH
TR: PRIMEVAL PLEASURE

"Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read." (Groucho Marx)


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 958 posts ]  Go to page Previous  1 ... 49, 50, 51, 52, 53, 54, 55 ... 64  Next



Who is online

Users browsing this forum: jaytea and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group

Webcams Highlights

Addo Nossob Orpen Satara
Addo Nossob Orpen Satara
Submitted by swartj at 19:10:55 Submitted by Anonymous at 06:50:42 Submitted by enrico at 05:56:25 Submitted by tomdchef at 20:04:22