Post by Jodie - admin on Jan 21, 2015 16:40:55 GMT
Hey everyone,
We've been having some discussion over the difference between spent and resting female gonads and I have some photos for show and tell.
Here are our stages for reference (stages were determined from a variety of published and non-published material on C. pagurus):
1 Immature: thin translucent gonad, white or pale
2 Undeveloped: lobes present, grey or pink
3 Developing: gonad developing covers less than 50% of cavity
4 Mature: orange, red, more than 50% of cavity filled with gonad
5 Resting/recovering: white, loose, remnant eggs
Has anyone done this work before, we will eventually do some histology as well, but not on all populations so it would be good to know that we are assessing correctly now, rather than later.
We are open to advice at this stage!
These following pictures we need some feedback on: can you visually determine the difference between resting and recovery if there are no eggs present, prior to histological examination? To hazard a guess the top two look like resting - lobes are well developed but look like they are not in reproductive mode. The bottom figure looks like lobes are empty but the colour and consistency is different so could be recovering? No eggs were observed on/in this female.
Comments anyone?
J
We've been having some discussion over the difference between spent and resting female gonads and I have some photos for show and tell.
Here are our stages for reference (stages were determined from a variety of published and non-published material on C. pagurus):
1 Immature: thin translucent gonad, white or pale
2 Undeveloped: lobes present, grey or pink
3 Developing: gonad developing covers less than 50% of cavity
4 Mature: orange, red, more than 50% of cavity filled with gonad
5 Resting/recovering: white, loose, remnant eggs
Has anyone done this work before, we will eventually do some histology as well, but not on all populations so it would be good to know that we are assessing correctly now, rather than later.
We are open to advice at this stage!
These following pictures we need some feedback on: can you visually determine the difference between resting and recovery if there are no eggs present, prior to histological examination? To hazard a guess the top two look like resting - lobes are well developed but look like they are not in reproductive mode. The bottom figure looks like lobes are empty but the colour and consistency is different so could be recovering? No eggs were observed on/in this female.
Comments anyone?
J
Attachments:
