Copepod species first food Centropyge Pygmy Flame Angelfish

mwp

mwp

In Memoriam
So this question seems to come up every week or two and everyone always just says "do a search" for the info and you'll find it. We all know how likely it is that you get the priviledge to "do a search" if you're not an RC supporter.

Two late night searches produced the following results - I hope this makes future searches a bit easier for folks in-need to find the answers (I also put this on the sticky Food Culture thread).

Here are some of the earlier threads that name possible or actual copepod genera/species utilized as first foods for centropyge pygmy angelfish larvae:

acartia clausi - http://www.reefcentral.com/forums/showthread.php?s=&threadid=740764

Parvocalanus species - http://www.reefcentral.com/forums/showthread.php?s=&threadid=476262

Clausocalanus sp. & Oithona simplex - http://www.reefcentral.com/forums/showthread.php?s=&threadid=403757 - and - http://www.reefcentral.com/forums/showthread.php?s=&threadid=203229

There are probably others, but after searching for 2 nights through all the flame angel threads, that's all I could find. If you know any other threads that contain additional/different information regarding larval feeds for marine angelfish, please dig 'em up and add them to this post and the sticky post!

Thanks and I hope it helps!

Matt
 
I've been thinking about this too so thanks for sharing the info. on pod species.

I have some difficulty beleiving that centropyge larvae have such specific feeding responses. Size is obviously crucial but surely there are loads of pod species that would do the trick. I guess nutritional value is another issue but if the larvae is actually willing to ingest it, there are things we could do to pack it full of goodness.

My plan was once I had a spawning pair, to start a culture of 'mixed copepods' (available online), place several larvae in a petri dish under the microscope, add pod culture strained through x micron mesh to isolate nauplii, and watch feeding response. It would then be a case of isolating the lucky pod from the mixed culture and growing loads of them.

Quite how you'd do this, I have noooooo idea:confused: Anyone?

Does anyone know how long this first feeding stage would last before things get a bit more straightforward with rotifers and BBS?

Also, anyone have any idea what makes centropyge loricula the most commonly attempted breeding prospect? Probably the most commonly owned pygmy angel and easy to sell but anything else? If it's anything to do with mouth part size, anyone have info. on this for other centropyge species?

Apologies if this is a bit of a hijack but all working toward the same goal.
 
<a href=showthread.php?s=&postid=7949249#post7949249 target=_blank>Originally posted</a> by polypboy

My plan was once I had a spawning pair, to start a culture of 'mixed copepods' (available online), place several larvae in a petri dish under the microscope, add pod culture strained through x micron mesh to isolate nauplii, and watch feeding response. It would then be a case of isolating the lucky pod from the mixed culture and growing loads of them.

Quite how you'd do this, I have noooooo idea:confused: Anyone?

[/B]
Click to expand...

Isolating a pure culture of pods? We would put some of the culture in a petri dish and manually pipette under the microscope, transferring the ones you want into a new petri dish (clean bath), then into a fresh culture setup. Also, don't know what lighting you've got for your scope but watch the temp in your petri dish. It can rise very rapidly potentially effecting the feeding response you're looking for.
 
Many thanks. How quickly would a culture likely grow? How many nauplii do you think you'd have to manually remove in order to create a self sustaining culture?
 
We actually didn't intentionally do it for nauplii. We were culturing ciliates to feed to larvae, but the application is the same for copepods. How many nauplii would you need? I'd say as many as you can catch in a given half day of doing it. It's tedious work, but well worth it if you can get a clean/pure culture. As far as growth, it takes several days for a nauplii to reach maturity and reproduce. So, it'll take at least as week to start to get a culture ramped up. Try doing a search on google scholar for copepod production in aquaculture. That should bring up some of the research done by the folks at Univ. Southern Miss. and Auburn. They've got info on desitities you should be shooting for.
 
All centropyge larvae that I know about are pelagic so any benthic species of food items are useless to culture for them.

If the food item isnt going to be found in the water column they arenot going to be found, let alone eaten by the C. larvae.

I dont know if this is beating a dead dog but several of the posts above didnt seem to take it into account.

The die-off on most larvae seemed to happen from the 8th day on, those that survived to the 15th day were then taking rotifers.
 
good point. Gladioferens imparipes is a calenoid copepod, so it should be pelagic, but the article describes it as clinging to the culture vessell, so I am not sure it is the most desirable one to culture.
 
Unfortunately I've just been alerted to some copyrite issues...

Two manuals for copepod culture

http://www.aims.gov.au/pages/research/hatchery-feeds/pdf/frdc-final-report-96398.pdf
Click to expand...

From the first couple of pages:"This work is copyright. Except as permitted under the Copyright Act 1968 (Cth), no
part of this publication other than Appendix 6 may be produced by any process,
electronic or otherwise, without the specific written permission of the FRDC.
Neither may information be stored electronically in any form whatsoever without
such permission."

This is Appendix 6, and is apparently OK to distribute.
http://www.aims.gov.au/pages/research/hatchery-feeds/pdf/copepod-culture-manual.pdf
 
I don't have any experience with angels or pods, but when my tanks are overtaken by pods, massives concentrations that I can't reproduce, if something that just happens,my dottyback larvae goes crazy about them and keep feeding on them until past meta, they get them from the glass and substrate.

I watch the pods dart from one place to another so they spend certain amount of time in the water colunm.

Is there benthic larvae?

Ed
 
my rotifers got contaminated once, the copepod concentration is very high sometimes and then goes away. It came from brood stock all my tanks are full of it from some live sand I got years ago. I think it has to do with what I feed the rots, right now the pod concentration is very low or I don't have any, rots are about 400/ml have to keep cleanin'/harvesting.

I have raised about 3 spawns (out of 32) where the pods were abundant, I don't see a difference in numbers or deformities but notice how aggresive they feed on them. My best groups 200+ were pod free.

They do really well in rots alone.Todd says that when they feed on pods they are more resistant to bacterial infections, but that is something I will never know since I have a strict antibiotic protocol.

I have a tank with clown gobies about 17 days old the pod concentration is too high you can see them darting around everywere.

I don't know how to reproduce this or what did I do, don't care since i don't have use for them pods or any interest in them or a pod "requiring" specie.

Under examination all i can say is that they look exactly like Plakton form Spongebob Squarepants.

I only mentioned this because I have seen larvae feeding on pods from substrates.
Ed
 
<a href=showthread.php?s=&postid=7966218#post7966218 target=_blank>Originally posted</a> by ediaz
,,,any interest in them or a pod "requiring" specie.

Under examination all i can say is that they look exactly like Plakton form Spongebob Squarepants.
...Ed
Click to expand...


:lol: :lol: :lol: :lol:
 
<a href=showthread.php?s=&postid=7965012#post7965012 target=_blank>Originally posted</a> by Kathy55g
Unfortunately I've just been alerted to some copyrite issues...


From the first couple of pages:"This work is copyright. Except as permitted under the Copyright Act 1968 (Cth), no
part of this publication other than Appendix 6 may be produced by any process,
electronic or otherwise, without the specific written permission of the FRDC.
Neither may information be stored electronically in any form whatsoever without
such permission."

This is Appendix 6, and is apparently OK to distribute.
http://www.aims.gov.au/pages/research/hatchery-feeds/pdf/copepod-culture-manual.pdf
Click to expand...

Just found this on the site

Permission to publish given by FRDC - August 6, 2001http://www.aims.gov.au/pages/research/hatchery-feeds/hfa-02a.html

Whew!:eek1:
 
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