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#467242 03/20/17 10:39 PM
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I have been looking for a source of PK shrimp

Has anyone ordered shrimp from this person? If so what was your experience. Did the shrimp arrive alive and healthy?

Also I want to make sure that they are truly PK shrimp so they will survive the winter in Iowa. Can anyone confirm they are PK shrimp and not Palaemonetes paludosus.

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From his pictures one cannot recognize the species. One needs to clearly and closely see the rostrum to distinguish between P.kadiakensis and P.paludosus. Since he says the the source pond gets ice cover, then I would trust the seller to have the correct specie name. Lower temperature survival limit of P. paludosus is 50F. A typical pond that gets ice cover will have near bottom water under ice temps of 39F.

For your complete satisfaction that you received the true P.kadiakensis put a couple(2-3) of them in a jar of pond water and slowly decrease the temperature to 40F. Put the jar in the refrigerator. If the shirmp survive for a few days in the 40F water they are P.kadiakensis.

Then if those stocked do not survive or flourish in your pond then it was a habitat problem and not because they were the wrong species. Remember you can not expect pheasants and quail to thrive in a bare or sparse field. They need AMPLE proper habitat and refuge areas from predators to flourish - same with grass shrimp.

If you order some of his shrimp please return with your feedback and keep us updated as to their progress in your pond/s. Others will be helped by your experiences.

Last edited by Bill Cody; 03/21/17 06:34 PM.

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I just bought 50. Ill do the refrigerator test as soon as I get them and let you guys know what happened.

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Maybe don't put the "ALL" in the fridge test in case some other circumstance happens other than just cold that kills them,,,


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Thanks for the information. Putting a few in the refrigerator to determine if they are the right species is a great idea. Another question. How deep of a pond will the shrimp need to survive the winter. I ask because my property has a 2,000 square foot puddle/pond that is only a foot or two deep. I assume it used to be a little bigger cattle watering hole. It doesn't have an outlet pipe and small dam has a gulley cut through it that has lowered the water level about two feet. I would like to turn this into a forage pond that I could have pk shrimp and maybe fathead minnows in. I could then net some and add them to my 1.5 acre pond as forage. The larger pond has a healthy population of bluegill, largemouth, and catfish so I don't think the shrimp will last long in it.

Last edited by hawkeyes; 03/24/17 05:26 PM.
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Yes it is. I'm supposed to get them today. Ill put 3-4 in the fridge for a few days and the rest in an aquarium. Ill let everyone know what happens.

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I got some last fall. Only a few, so I am not sure how they did. Not sure if they would be active now in my area or when to look for them. The fellow that supplied them seems like a nice guy. Good luck!

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Put 10-12 g.shrimp in your puddle pond. If the puddle pond does not freeze solid they will survive. Consider having a backhoe come in, spend 30 minutes, and deepen one area or end of the puddle pond to 3-4ft. This will be a winter refuge for the grass shrimp and keep it from completely drying up.

Last edited by Bill Cody; 03/22/17 10:15 AM.

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I just order 50 shrimp tonight. I will let you know when I get them and how a few survive in the refrigerator. I realized the image couldn't be viewed so I will try again.

http://photobucket.com/confirmation?token=7u1Dt2WxMp%2Fvmthx%2FouCjUldhKG6WXjUB47U11rUdho0Ht7DsoA2RS4O5NV6%2FqaFpo2zTgZ8XmxM2dKt7RgkbEGxQ%2Brl5xtC

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Question - Do you think rainbow darters would impact PK-shrimp as the only fish in a small pond fed by an aresian well? I am thinking they may take the small ones.

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Thanks. I'll hold off on adding any fish until I know I have the PK's established in multiple BOWs. I need to get out after dark with a flashlight and see if I can spot any.

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Does anyone know if frogs are a serious predator of grass shrimp?

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I would guess not based on the way their tongues are used to catch prey, unless the shrimp spend time with parts of their bodies above the water surface.

OK some frogs eat Gammarus so maybe I am a bad guesser:

http://journals.tubitak.gov.tr/zoology/issues/zoo-07-31-1/zoo-31-1-12-0602-9.pdf


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Hows a guy in Ontario Canada able to get his hands on some to start a population in pools with plants?

The link above states the seller will not ship to Canada.

Cheers Don.


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Originally Posted By: Turtlemtn
Does anyone know if frogs are a serious predator of grass shrimp?


FWIW I've read that the American Bullfrog is unique among N. American frogs in that it will eat any prey it can fit in its mouth, above or below the surface. I know for a fact they will eat small fish. So IMO they will eat grass shrimp if the opportunity arises.


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I am not aware that bullfrogs capture food underwater.


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Originally Posted By: Bill Cody
I am not aware that bullfrogs capture food underwater.


Sorry for the confusion Bill. I was saying that bullfrogs eat submerged prey, not that bullfrogs eat prey while they are submerged.

(Cardini, F. (1974). Specializations of the Feeding Response of the Bullfrog, Rana catesbeiana, for the Capture of Prey Submerged in Water. M.S. Thesis, U. of Massachusetts, Amherst, MA)

These studies revealed the bullfrog's diet to be unique among North American ranids in the inclusion of a large percentage of aquatic animals, such as fish, tadpoles, ram's horn snails, and dytiscid beetles. Bullfrogs can capture large, strong prey because of the powerful grip of their jaws after the initial ranid tongue strike. The bullfrog is able to make allowance for light refraction at the water-air interface by striking at a position posterior to the target's perceived location. The comparative ability of bullfrogs to capture submerged prey, compared to that of the green frog, leopard frog, and wood frog (L. clamitans, L. pipiens, and L. sylvaticus, respectively) was also demonstrated in laboratory experiments

Last edited by Bill D.; 03/27/17 06:46 PM. Reason: Clarification

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I am not convinced that bullfrogs will eat enough grass shrimp to impact the grass shrimp numbers. Fish will eat a whole lot more shrimp compared to bullfrogs.


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Originally Posted By: Bill Cody
I am not convinced that bullfrogs will eat enough grass shrimp to impact the grass shrimp numbers. Fish will eat a whole lot more shrimp compared to bullfrogs.


IMO you are 100% correct that's why I just posted bullfrogs would eat grass shrimp if the opportunity presents itself. I doubt many grass shrimp come in range.


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I have a small garden pond that I cold put grass shrimp in, if I can get grass shrimp, but the pond supports a few bullfrogs and other frogs much of the year. They have already shown up. In a larger pond I wouldn't worry much about the frogs, but in this small enclosure, I think the frogs could grab them.

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Originally Posted By: Bill Cody
I am not aware that bullfrogs capture food underwater.


That would make these two pictures kind of hard to explain.

Post containing pictures with 2 bullfrogs eating FHM

Edit: post 408453 at top of the page

Last edited by snrub; 03/27/17 09:57 PM.

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post #408453 has the pictures in that link of SNRUB above, if you like me were having a hard time finding the pictures.

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Thanks, I edited my post to include your information.

I thought linking to the post was better than re-posting the pictures because the accompanying explanation might also be informative.


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