Chub Chunkin' 2015. Coming to a watershed near you!
Spontaneous Regeneration - appearance of fish in unstocked ponds
Started by
Guest_LittleBuffalo_*
, Mar 09 2012 09:37 AM
68 replies to this topic
#63
Guest_centrarchid_*
Guest_centrarchid_*
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- Guests
Posted 12 May 2014 - 09:56 PM
Enough posturing. Lets see these fish.
The like breeding like needs proving with such hybrids.
Consider possibility fish stocked included pure greens along with hybrids. Being in the business of producing hybrid bluegill, it is very plausible some of your stockers were not what you paid for.
The like breeding like needs proving with such hybrids.
Consider possibility fish stocked included pure greens along with hybrids. Being in the business of producing hybrid bluegill, it is very plausible some of your stockers were not what you paid for.
#64
Guest_Skipjack_*
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Posted 12 May 2014 - 10:09 PM
Consider possibility fish stocked included pure greens along with hybrids. Being in the business of producing hybrid bluegill, it is very plausible some of your stockers were not what you paid for.
That is possible, I went through the fish, but as a non expert, I could have missed a couple.
#65
Guest_smbass_*
Guest_smbass_*
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Posted 13 May 2014 - 07:33 AM
I also think this is the most likely scenario, I have seen plenty of what appear to be pure greens in with the hybrids when they are purchased. I think that although you may have tried your best to sort them out that you could have easily missed a couple if there was a large number of them. Also considering those few are more likely to reproduce well than all the hybrid that only reproduce on a marginal level you could very quickly skew the fish in the pond back towards greens.
#66
AussiePeter
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- NANFA Member
Posted 24 January 2015 - 07:53 AM
I haven't looked at this thread for a while, but always enjoy going back and reading through this stuff. FWIW, no water for 1/2 mile is nothing in my mind, especially for a fish like green sunfish which are one of the fastest species to recolonize habitats after drought (think that was said in fishes of Kansas or Illinois, I forget which now).
This story just appeared in one of the Aussie news papers, thought I'd share the link to the story and picture.
http://www.ntnews.co...t-1227190375754
Cheers
Peter
This story just appeared in one of the Aussie news papers, thought I'd share the link to the story and picture.
http://www.ntnews.co...t-1227190375754
Cheers
Peter
#67
gerald
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- Global Moderator
- Wake Forest, North Carolina
Posted 24 January 2015 - 11:49 AM
Do spangled perch have any special anatomy for swimming in a thin film of water or creeping overland (i.e. stiff pectoral/pelvic rays, enlarged lower caudal lobe, etc) or are they "just a regular fish" with unusual behavior and UV+heat tolerance ?
If anybody is near Raleigh on Thurs Feb 5, Benjamin Perlman will be speaking at the Raleigh Aqu Soc meeting on Mangrove Rivulus ecology, with a particular focus on their overland travel abilities.
If anybody is near Raleigh on Thurs Feb 5, Benjamin Perlman will be speaking at the Raleigh Aqu Soc meeting on Mangrove Rivulus ecology, with a particular focus on their overland travel abilities.
Gerald Pottern
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Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel
#68
mattknepley
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- NANFA Member
- Smack-dab between the Savannah and the Saluda.
Posted 24 January 2015 - 04:52 PM
Pretty cool! The Todd River kinda looks like a parking lot after a downpour. The article says that spangled perch are the only native fish in the Todd. What exotics are there? Anybody we "exported" from NANFA turf?
Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."
"No thanks, a third of a gopher would merely arouse my appetite..."
#69
AussiePeter
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- NANFA Member
Posted 24 January 2015 - 10:59 PM
Spangled perch have no special adaptations, they are just really tough and do best with few other fishes in extremely harsh places, often with minimal or even no permanent water. Note that if everything goes dry they are dead and gone, but if water persists somewhere in the basin they will recolonize eventually. They have an extreme drive to migrate when the chance comes. See this paper for more details, http://www.sciencedi...140196301908134 (I can make the pdf available if you can't get it).
Todd River has no other natives, spotted livebearers were present at points in the past, but have disappeared. This is a very extreme environment that few fishes could persist long-term in due to lack of water. The entire Northern Territory is almost completely exotic fish free as few peole live there and the second fisheries finds an exotic they blitz krieg it!
Cheers
Peter
Todd River has no other natives, spotted livebearers were present at points in the past, but have disappeared. This is a very extreme environment that few fishes could persist long-term in due to lack of water. The entire Northern Territory is almost completely exotic fish free as few peole live there and the second fisheries finds an exotic they blitz krieg it!
Cheers
Peter
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