www.photomacrography.net :: View topic - in depth on planthopper gears
www.photomacrography.net Forum Index
An online community dedicated to the practices of photomacrography, close-up and macro photography, and photomicrography.
Photomacrography Front Page Amateurmicrography Front Page
Old Forums/Galleries
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
in depth on planthopper gears

 
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Photography Through the Microscope
View previous topic :: View next topic  
Author Message
blepharopsis



Joined: 28 Nov 2014
Posts: 128
Location: Virginia, USA

PostPosted: Thu Dec 11, 2014 1:25 pm    Post subject: in depth on planthopper gears Reply with quote

Greetings! I'm sure some of you are familiar with the findings of prof. Malcolm Burrows published last year in Science (http://www.sciencemag.org/content/341/6151/1254.full) and describing the cog wheels present on certain planthopper nymphs' hind legs (trochanters, to be precise), mechanically coupling them during the jump. The insects are very accomplished jumpers capable of acceleration of staggering 600 x G; the mechanical coupling prevents tumbling during the jump. The publication was picked up by popular science blogs and mainstream media, virtually everyone loved the idea of bugs having invented cog wheels millions of years before we invented the regular ones. Eventually planthopper was awarded the title of "Science magazine's Invertebrate of the Year" (and no doubt is enjoying celebrity status by now, attending parties in Hollywood, double-dating with Oprah etc.). Below, planthopper nymph's gears as seen through a confocal microscope.

All samples treated with KOH/H2O2, stained with Congo Red, imaged with Zeiss LSM 710, 10x NA 0.45





Posterior, dorsal and ventral views of the trochanteral gears of the Acanalonia conica (Green Coneheaded Planthopper) nymph. Colors represent depth (depth color coding).


Dorsal view of the trochanteral gears of the Acanalonia conica (Green Coneheaded Planthopper) nymph. Red-cyan anaglyph.


Stereo pair for 'relaxed-eye' viewing.


Stereo pair for 'crossed-eyes' viewing.


Dorsal view of the trochanteral gears and large depressor muscle tendons of the Citrus flatid planthopper (Metcalfa pruinosa) nymph. Depth color coding.


Posterior view of the trochanteral cog and pleural arch of the citrus flatid planthopper (Metcalfa pruinosa) nymph. The semi-lunar arch serves as a spring storing the energy for jump; the power is supplied by a large trochanteral depressor muscle (not shown) inserting in the top part of the arch and into the funnel-shaped tendon visible in the lower part of the image. Depth color coding.

[/quote]
Back to top
View user's profile Send private message Visit poster's website
rjlittlefield
Site Admin


Joined: 01 Aug 2006
Posts: 17697
Location: Richland, Washington State, USA

PostPosted: Thu Dec 11, 2014 1:36 pm    Post subject: Reply with quote

Marvellous! You're really spoiling us with these images. Very Happy

--Rik
Back to top
View user's profile Send private message Visit poster's website
discomorphella



Joined: 01 Oct 2006
Posts: 595
Location: NW USA

PostPosted: Thu Dec 11, 2014 3:02 pm    Post subject: Reply with quote

Yeah, if my jaw drops anymore I'll need some kind of surgery to pin it back in place. I've used a similar Zeiss LSM and never thought to put bugs under it. Now I am going to have to start... Just beautiful images.

David
Back to top
View user's profile Send private message
RogelioMoreno



Joined: 20 Nov 2009
Posts: 2953
Location: Panama

PostPosted: Thu Dec 11, 2014 4:23 pm    Post subject: Reply with quote

Wow, beautiful set. Shocked

Rogelio
Back to top
View user's profile Send private message Send e-mail
Jacek



Joined: 02 Oct 2011
Posts: 4391
Location: Poland

PostPosted: Thu Dec 11, 2014 11:42 pm    Post subject: Reply with quote

Beautiful (Jestes mistrzem !)
_________________
My Photos: http://dysk.onet.pl/link/LSQpH#.
Back to top
View user's profile Send private message Send e-mail
Litonotus



Joined: 20 Jun 2011
Posts: 1389
Location: Poland

PostPosted: Fri Dec 12, 2014 12:02 am    Post subject: Reply with quote

Perfect set! (:
_________________
my FB page

I'm looking for the the extemely rare V-IM magnification changer for the E800 scope. If you have seen a listing or have one for sale please let me know.
Back to top
View user's profile Send private message Visit poster's website
Wim van Egmond



Joined: 15 Aug 2006
Posts: 825
Location: Berkel en Rodenrijs, the Netherlands

PostPosted: Fri Dec 12, 2014 3:48 am    Post subject: Reply with quote

Super stuff. It is nice that you are exploring all these subjects with the confocal.
Back to top
View user's profile Send private message Visit poster's website
arturoag75



Joined: 05 Feb 2010
Posts: 1564
Location: italy

PostPosted: Fri Dec 12, 2014 6:08 am    Post subject: Reply with quote

Fantastic Shocked
_________________
www.microscopeitaly.it
Back to top
View user's profile Send private message Visit poster's website
Sumguy01



Joined: 28 Jan 2013
Posts: 799
Location: Ketchikan Alaska USA

PostPosted: Fri Dec 12, 2014 8:35 am    Post subject: Reply with quote

WOW!
Great pics.
Very interesting.
Thanks for sharing.
Back to top
View user's profile Send private message
pwnell



Joined: 18 Dec 2009
Posts: 1908
Location: Tsawwassen, Canada

PostPosted: Fri Dec 12, 2014 2:08 pm    Post subject: Reply with quote

Very beautiful and informative, thanks for sharing.
Back to top
View user's profile Send private message
Charles Krebs



Joined: 01 Aug 2006
Posts: 5641
Location: Issaquah, WA USA

PostPosted: Fri Dec 12, 2014 4:16 pm    Post subject: Reply with quote

Stunning!
I remember reading the Science article, and then doing a brief search for a specimen... to no avail (I''ll stop looking now Wink) . These images are so much better than those in the article. the article.
_________________
http://www.krebsmicro.com
Back to top
View user's profile Send private message Visit poster's website
Linden.g



Joined: 06 Apr 2009
Posts: 325
Location: PA USA

PostPosted: Fri Dec 12, 2014 4:22 pm    Post subject: Reply with quote

Amazing mechanics and stunning images
_________________
Linden Gledhill http://www.flickr.com/photos/13084997@N03/
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic    www.photomacrography.net Forum Index -> Photography Through the Microscope All times are GMT - 7 Hours
Page 1 of 1

 
Jump to:  
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 vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group