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Another Lousy Portrait ---- Amblycerid Louse?

 
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Cactusdave



Joined: 09 Jun 2009
Posts: 1136
Location: Bromley, Kent, UK

PostPosted: Tue Oct 11, 2011 12:56 pm    Post subject: Another Lousy Portrait ---- Amblycerid Louse? Reply with quote

This image is of a louse parasite from a pheasant. The slide is labelled ' parasite of Horned Tragopan' and is by a Victorian slide mounter, C. Collins Junior who sold slides under the name 'Micro-Naturalist' in the 1880s. The horned Tragopan is a species of pheasant, Tragopan melanocephalus, native to the Himalayas, but kept in captivity for its beautiful plumage. I tried to identify the louse, but I couldn't get much further than Sub-Order Amblycera, the chewing lice, http://en.wikipedia.org/wiki/Amblycera , commonly found on birds. I won't go into their method of feeding, particularly unpleasant! Shocked For details see the Wikipedia article.
The image is a stack and stitch.
Microscope: Nikon Diaphot Objective: Nikon X10, 0.25 Plan DIC Condenser: Nikon LWD 0.55 Phase/DIC Camera: Canon EOS 40D
Number of images: 468
Number of stacks: 29
Stacked with: Helicon Focus
Stitched with: Microsoft ICE



A larger 115 Megapixel version which can be zoomed into and navigated around is here http://photosynth.net/view.aspx?cid=7baac9fe-2bd5-4e25-9fea-93a4bb38de22

I was puzzled by the black structure on the abdomen. I thought initially it might be undigested stomach contents, but the material appears to lie outside the body of the louse, and higher magnification seems to show feather remains.

The method of preparation of the slide has preserved the structure of the muscles and these show up well under DIC because of their birefringence in polarised light.

Some of the features of the louse are shown in these crops from various parts of the larger image.















I thought these pictures might be of particular interest to Wim, who is, as we know is a lover of all things lousy. Laughing http://www.photomacrography.net/forum/viewtopic.php?t=14304&highlight=lousy+wallpaper
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rjlittlefield
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Joined: 01 Aug 2006
Posts: 14345
Location: Richland, Washington State, USA

PostPosted: Tue Oct 11, 2011 1:31 pm    Post subject: Reply with quote

Two thumbs up for this one! I'm pleasantly astonished at the fact you can pull out such beautifully defined muscles in this 130-year old slide.

--Rik
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Cactusdave



Joined: 09 Jun 2009
Posts: 1136
Location: Bromley, Kent, UK

PostPosted: Tue Oct 11, 2011 1:51 pm    Post subject: Reply with quote

Thanks Rik. That is greatly appreciated. I have one or two other old slides in which the musculature is well preserved, by this mounter and by another, L. C. Clarke who was selling slides in the 1920s. All of mine are of parasitic lice of one sort or another, though I have seen beautiful flea mounts in which the muscles are startlingly well preserved. Of course Fred Enoch's 'prepared without pressure' fluid mounts of insects showing musculature are legendary (and good ones, legendarily expensive Very Happy ).
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Mitch640



Joined: 15 Aug 2010
Posts: 2137

PostPosted: Tue Oct 11, 2011 2:12 pm    Post subject: Reply with quote

Amazingly beautiful Dave. Every time I see one of your old slides, I feel the gravity of the ages on it. It looks like the poor thing has had an anvil sitting on it for a hundred years and flattened it into a truly two dimensional thing. Smile
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RogelioMoreno



Joined: 20 Nov 2009
Posts: 2371
Location: Panama

PostPosted: Tue Oct 11, 2011 3:10 pm    Post subject: Reply with quote

Beautiful!

Rogelio
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Wim van Egmond



Joined: 15 Aug 2006
Posts: 693
Location: Rotterdam, the Netherlands

PostPosted: Tue Oct 11, 2011 11:42 pm    Post subject: Reply with quote

Wow, Dave, I was looking at the images with amazement and than I noticed that you wre referring to me. Yes, I do consider myself a lousy photographer! Smile

Very nice pictures and the quality of the slide is surprising. I have made mounts with clove oil myself but not as clear as this.

Wim
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Cactusdave



Joined: 09 Jun 2009
Posts: 1136
Location: Bromley, Kent, UK

PostPosted: Wed Oct 12, 2011 12:25 am    Post subject: Reply with quote

Thanks Wim, Regelio and Mitch. Wim, I so much enjoyed your piece on your 'lousy themed exhibition' that I was inspired to look around for additional lousy slides, so there are more lousy puns to follow. Wink
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arturoag75



Joined: 05 Feb 2010
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Location: italy

PostPosted: Wed Oct 12, 2011 3:22 am    Post subject: Reply with quote

Stunning shots and superb definition Shocked !
arturo
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Wim van Egmond



Joined: 15 Aug 2006
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Location: Rotterdam, the Netherlands

PostPosted: Wed Oct 12, 2011 4:03 am    Post subject: Reply with quote

I am looking forward to more itchy pics, Dave! Don't they say: 'Beauty lice in the eye of the beholder?'

Wim
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Cactusdave



Joined: 09 Jun 2009
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Location: Bromley, Kent, UK

PostPosted: Wed Oct 12, 2011 1:28 pm    Post subject: Reply with quote

Thanks Arturo.
Wim, I can promise you some things both itchy and scratchy, though at the risk of being called nit-picking, not all of them are truly lousy. Wink
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Wim van Egmond



Joined: 15 Aug 2006
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Location: Rotterdam, the Netherlands

PostPosted: Wed Oct 12, 2011 11:41 pm    Post subject: Reply with quote

Dave, it mite me nice to see more muscely critter images. I will also try to make some.

Wim
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abpho



Joined: 17 Aug 2011
Posts: 963

PostPosted: Tue Nov 29, 2011 7:45 pm    Post subject: Reply with quote

Amazing.
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