Rotifer with 40X objective, trachelomonas with 100X objective.
...edited to add rotifer identification.... Thanks Francisco.
Trachelomonas. Polyarthra rotifer.
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Charles Krebs
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Trachelomonas. Polyarthra rotifer.
Finally took a fresh pond sample this afternoon. Lots of trachelomonas and some rotifers I have not seen too often. (Sorry, no ID).
Rotifer with 40X objective, trachelomonas with 100X objective.
...edited to add rotifer identification.... Thanks Francisco.
Rotifer with 40X objective, trachelomonas with 100X objective.
...edited to add rotifer identification.... Thanks Francisco.
Last edited by Charles Krebs on Mon Dec 06, 2010 11:20 am, edited 1 time in total.
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fpelectronica
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Hello
Beautiful photographs
I think it would Poyartha rotifer
http://www.youtube.com/watch?v=gJOqAcDbGHg
Greetings
Francisco
Beautiful photographs
I think it would Poyartha rotifer
http://www.youtube.com/watch?v=gJOqAcDbGHg
Greetings
Francisco
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Charles Krebs
- Posts: 5865
- Joined: Tue Aug 01, 2006 8:02 pm
- Location: Issaquah, WA USA
- Contact:
Francisco,
Yes, it does appear to be a Polyarthra, thank for the identification.
It's motion was interesting. In addition to the normal "cruising" motion observed in many rotifers as they feed, these would occasionally make an extremely rapid "jump" for a short distance. I couldn't make out what the mechanism was that enabled that extremely quick locomotion.
Yes, it does appear to be a Polyarthra, thank for the identification.
It's motion was interesting. In addition to the normal "cruising" motion observed in many rotifers as they feed, these would occasionally make an extremely rapid "jump" for a short distance. I couldn't make out what the mechanism was that enabled that extremely quick locomotion.
Dear Charles,
incredible photos indeed!
The Polyarthra rotifer has 12 paddel like appendages, in 4 groups of 3. Two of these groups are parallel to the left and right side of the rotifer´s body, stretching beyond its back end. These paddles can be flipped back and forth by nearly 180°, powered by the huge muscles which can be clearly seen behind the paddles. When the paddles are flipped the rotifer makes a big jump, most likely to escape predators.
By the way: How did you manage to photograph so many Trachelomonas specimen so close to each other with that detail without cracking a single lorica? Unbelievable.
Greetings
Bernd
incredible photos indeed!
The Polyarthra rotifer has 12 paddel like appendages, in 4 groups of 3. Two of these groups are parallel to the left and right side of the rotifer´s body, stretching beyond its back end. These paddles can be flipped back and forth by nearly 180°, powered by the huge muscles which can be clearly seen behind the paddles. When the paddles are flipped the rotifer makes a big jump, most likely to escape predators.
By the way: How did you manage to photograph so many Trachelomonas specimen so close to each other with that detail without cracking a single lorica? Unbelievable.
Greetings
Bernd