Gallery Links
Users Online
· Guests Online: 31

· Members Online: 0

· Total Members: 4,950
· Newest Member: JeffersonA
Forum Threads
Theme Switcher
Switch to:
Last Seen Users
· ESant00:16:33
· evdb00:17:11
· Nosferatumyia00:26:36
· Quaedfliegh00:45:51
· Arthur van O...01:05:50
· weia01:12:28
· John Carr01:30:54
· Volker02:11:26
· Gansucha02:31:23
· smol02:47:14
Latest Photo Additions
View Thread
Diptera.info :: Identification queries :: Other insects, spiders, etc.
Who is here? 1 guest(s)
 Print Thread
Spermatophor?
Nikita Vikhrev
#1 Print Post
Posted on 13-09-2005 16:59
User Avatar

Member

Location: Moscow, Russia
Posts: 9205
Joined: 24.05.05

Sorry to disturb with non-dipterology question, but during a month I didn't find any source of infirmation.
This Collembola is from Neanuridae (with semi-moon top of abdomen) live under tree bark.
Collembola males have to leave spermatophor in any siutable place, than female have to gather it.
What do you think the sabject (marked red line) is spermatophor or something else?
www.diptera.info/forim/6-0712-1.jpg
Nikita Vikhrev - Zool Museum of Moscow University
 
Andrius
#2 Print Post
Posted on 14-09-2005 07:54
Member

Location: Lithuania
Posts: 315
Joined: 27.01.05

I think it could be some kind of fungus as well.
 
Nikita Vikhrev
#3 Print Post
Posted on 14-09-2005 17:27
User Avatar

Member

Location: Moscow, Russia
Posts: 9205
Joined: 24.05.05

Yes, Andrius, as well it may be some fungi.
I show this image to freind of my friend, "collembolist" from Novosibirsk. She wrote me that honestly she has never seen collembola spermatophor herself. In this case, if not fungi than image may be rather rare and interesting. Size is siutable...
Nikita Vikhrev - Zool Museum of Moscow University
 
Xespok
#4 Print Post
Posted on 14-09-2005 17:41
User Avatar

Member

Location: Debrecen, Hungary
Posts: 5550
Joined: 02.03.05

Honestly, if it was a fungus, I think there should be more of the same visible on the image. It is very rare, though not impossible to see a sigle mycelium with an apparent fruiting body. So my guess is that the object could well be a spermatophore.

"Mating
Collembola do not actually go in for conventional mating instead the males leave a spermatophore (a bag of sperm) where the females might find it, sometimes this is off the ground on a short stalk. This habit is feasible because many species tend to collect in groups, like small herds of miniature cattle, and thus the females are quite likely to find the spermatophores. A female will lay about 90 to 150 eggs during her life, though this also varies with species. The eggs take about a month to hatch at 8 degrees C but are quicker at warmer temperatures, Pogonognathellus plumbeus eggs hatch in 3-4 day at about 20 degrees C most will live for about a year. Some will live for a long time with out food, the longest I know of being 18 months for a single specimen on its own , though if the food runs out you will get cannibalism, particularly of eggs in some cultures and with some species."

Info from: http://www.earthlife.net/insects/collcare.html
 
Teglagyar u. 30.
Nikita Vikhrev
#5 Print Post
Posted on 14-09-2005 21:02
User Avatar

Member

Location: Moscow, Russia
Posts: 9205
Joined: 24.05.05

Hi Xespok.
Reading your reply a simple idea came to my mind. Realy, living in last century without i-net I had to collect the doubtfull subject and simply inverstigate it under the microscop. So I'll try to do next weekend. Thank you.
Nikita Vikhrev - Zool Museum of Moscow University
 
Xespok
#6 Print Post
Posted on 15-09-2005 01:41
User Avatar

Member

Location: Debrecen, Hungary
Posts: 5550
Joined: 02.03.05

Well the problem often is that you mostly only find these tiny small things on the photo and it is often too late to think about collecting something in the arm chair in front of the computer. I know that this group of Collembola is around 1mm in length, so the spermatophore is maybe 0.2 mm or so. This is too small to pick it up by the eye.

xespok
 
Teglagyar u. 30.
Jump to Forum:
Date and time
29 March 2024 16:21
Login
Username

Password



Not a member yet?
Click here to register.

Forgotten your password?
Request a new one here.
Temporary email?
Due to fact this site has functionality making use of your email address, any registration using a temporary email address will be rejected.

Paul
Donate
Please, help to make
Diptera.info
possible and enable
further improvements!
Latest Articles
Syrph the Net
Those who want to have access to the Syrph the Net database need to sign the
License Agreement -
Click to Download


Public files of Syrph the Net can be downloaded HERE

Last updated: 25.08.2011
Shoutbox
You must login to post a message.

07.03.24 00:01
Some flies preserved in ethanol and then pinned often get the eyes sunken, how can this be avoided? Best answer: I usually keep alcohol-collected material in alcohol

17.08.23 15:23
Aneomochtherus

17.08.23 13:54
Tony, I HAD a blank in the file name. Sorry!

17.08.23 13:44
Tony, thanks! I tried it (see "Cylindromyia" Wink but don't see the image in the post.

17.08.23 11:37
pjt - just send the post and attached image. Do not preview thread, as this will lose the link to the image,

16.08.23 08:37
Tried to attach an image to a forum post. jpg, 32kB, 72dpi, no blanks, ... File name is correctly displayed, but when I click "Preview Thread" it just vanishes. Help!

23.02.23 21:29
Has anyone used the Leica DM500, any comments.

27.12.22 21:10
Thanks, Jan Willem! Much appreciated. Grin

19.12.22 11:33
Thanks Paul for your work on keeping this forum available! Just made a donation via PayPal.

09.10.22 17:07
Yes, dipterologists from far abroad, please buy your copy at veldshop. Stamps will be expensive, but he, the book is unreasonably cheap Smile

Render time: 0.98 seconds | 189,913,922 unique visits