Spirogyra conjugation tubes and spores

Images made through a microscope. All subject types.

Moderators: rjlittlefield, ChrisR, Chris S., Pau

jc maccagno
Posts: 509
Joined: Tue Dec 21, 2010 5:43 pm

Spirogyra conjugation tubes and spores

Post by jc maccagno »


pond water 40X Meiji MX5000

Ernst Hippe
Posts: 205
Joined: Sun Aug 16, 2009 9:41 am
Location: Germany

Post by Ernst Hippe »

the second picture is remarkable: there are two conjugation tubes to one cell, but only one zygote. Where is the second one??
Regards Ernst

Posts: 30
Joined: Sat Jan 07, 2012 8:51 pm
Location: Department of Biology, The University of Akron, Akron, OH.

3N zygote?

Post by uaalgae »

This is a very strange occurrence. I have observed Spirogyra sexual reproduction in many species. Usually if the two filaments (+/-) have slightly shorter or longer cells, this will often cause two adjacent male cells to try and form an association with the same female cell (one accepting the male gamete). Since there is one zygote in the female cell, would this mean that this is a 3N instead of 2N zygote? Very interesting.

Post Reply Previous topicNext topic