Copepod ID ?

Copepod ID ?

Postby GBPUK » Sun Jan 20, 2013 5:34 pm

Any ideas what these are ? I know they are Calanoid but any one know species ?

Image
GBPUK
 
Posts: 19
Joined: Sat Jan 28, 2012 7:50 am

Re: Copepod ID ?

Postby spawner » Sun Jan 20, 2013 8:23 pm

Do you know the size of them?
User avatar
spawner
 
Posts: 1610
Joined: Mon Mar 05, 2007 8:28 am

Re: Copepod ID ?

Postby GBPUK » Mon Jan 21, 2013 6:47 am

I was unable to find my scale slide, what I can tell you is they are smaller than Tangerine pods and Tigriopus. I was able to observe that because I have cultures of both of them.
GBPUK
 
Posts: 19
Joined: Sat Jan 28, 2012 7:50 am

Re: Copepod ID ?

Postby Luis A M » Mon Jan 21, 2013 11:47 am

They look like Acartia,but could be any calanoid.You should know what species you brought in.If you see females with egg sacs,then they are not Acartia,nor Parvo.
Luis
User avatar
Luis A M
Moderator
 
Posts: 5630
Joined: Sun Mar 04, 2007 2:34 pm
Location: Buenos Aires,Argentina

Re: Copepod ID ?

Postby GBPUK » Mon Jan 21, 2013 12:43 pm

I bought them as "MARINE COPEPODS" from a LFS so I have no positive ID on them, I am hoping they are Acartia as we can not get them here cheap and these were cheap. I ordered a full case of them 48 x 90ml pouches in case they are. If not the adult Mandarins will have a feast.
I only have Tangerine and Tigriopus to compare them to.
Of all the samples I have put under the scope none are showing egg sacs so I am leaning toward Acartia, but dont want to get to excited.
GBPUK
 
Posts: 19
Joined: Sat Jan 28, 2012 7:50 am

Re: Copepod ID ?

Postby Luis A M » Mon Jan 21, 2013 2:40 pm

So nobody at the LFS recalls or keeps records of what they had purchased? :shock:
If you succeed in storing and hatching eggs as described,you can be pretty sure they are A.tonsa :wink:
Luis
User avatar
Luis A M
Moderator
 
Posts: 5630
Joined: Sun Mar 04, 2007 2:34 pm
Location: Buenos Aires,Argentina

Re: Copepod ID ?

Postby GBPUK » Mon Jan 21, 2013 2:51 pm

The LFS is a chain, the food came in prepackaged. They tried to find out but had no luck. I am hoping when the case arrives it will have details of the company so I can contact them. I did view a naup under the scope today and it was tiny, only as wide as the thickest part of the adult antennae.
I don't feel confident enough to collect and store eggs. Thank you for your input.
GBPUK
 
Posts: 19
Joined: Sat Jan 28, 2012 7:50 am

Re: Copepod ID ?

Postby spawner » Mon Jan 21, 2013 5:42 pm

My thought was A.tonsa as well.
User avatar
spawner
 
Posts: 1610
Joined: Mon Mar 05, 2007 8:28 am

Re: Copepod ID ?

Postby Luis A M » Mon Jan 21, 2013 6:04 pm

Small naups of A.tonsa make quick circular jumps.Naups of Parvo often show a lateral view to the observer :wink:

And storing eggs is easy if you follow my protocol.And convenient.
Luis
User avatar
Luis A M
Moderator
 
Posts: 5630
Joined: Sun Mar 04, 2007 2:34 pm
Location: Buenos Aires,Argentina

Re: Copepod ID ?

Postby GBPUK » Mon Jan 21, 2013 6:31 pm

I sure hope they are A.Tonsa I have some Mandarins I want to have a go with. The naup did have a strange swimming action almost like Moina.
If they are Tonsa and I manage to keep them alive I will attempt to collect eggs to store once I have read the article.

This one is from a culture I have that I purchased as Tangerine. It is much larger than the other Calanoid.

Image
GBPUK
 
Posts: 19
Joined: Sat Jan 28, 2012 7:50 am

Re: Copepod ID ?

Postby spawner » Tue Jan 22, 2013 9:27 pm

Opps. Misread your last post.
User avatar
spawner
 
Posts: 1610
Joined: Mon Mar 05, 2007 8:28 am

Re: Copepod ID ?

Postby Luis A M » Tue Jan 22, 2013 10:41 pm

Tangerines are Arctodiaptomus salinus.The egg sac is single,not paired as in other species.
Luis
User avatar
Luis A M
Moderator
 
Posts: 5630
Joined: Sun Mar 04, 2007 2:34 pm
Location: Buenos Aires,Argentina

Re: Copepod ID ?

Postby zimajays » Sat Jan 26, 2013 12:48 pm

These are from the same "marine copepod" Gary sent them to me. Taken on a 1cm slide with 100micron marks. Also a pic of a female taken with my camera pointing down the eye piece.

https://fbcdn-sphotos-e-a.akamaihd.net/ ... 8309_n.jpg

Image
zimajays
 
Posts: 32
Joined: Sun Jan 02, 2011 3:35 pm

Re: Copepod ID ?

Postby arrecife fuego » Sat Apr 06, 2013 11:32 am

arrecife fuego
 
Posts: 27
Joined: Mon Jul 26, 2010 12:46 am

Re: Copepod ID ?

Postby Luis A M » Sat Apr 06, 2013 2:44 pm

Positively a harp.
Luis
User avatar
Luis A M
Moderator
 
Posts: 5630
Joined: Sun Mar 04, 2007 2:34 pm
Location: Buenos Aires,Argentina


Return to Zooplankton



Who is online

Users browsing this forum: No registered users and 7 guests

cron