My Cambarellus crays(berried montezumae pictures added!)
Moderator: Mustafa
My Cambarellus crays(berried montezumae pictures added!)
Currently keeping C. montezumae, C. puer, C. shufeldtii and C. patzcuarensis(orange).
I have babies of all minus the C patzcuarensis which I have a berried female. I will post pictures of the different crays later on.
-Pedro
I have babies of all minus the C patzcuarensis which I have a berried female. I will post pictures of the different crays later on.
-Pedro
Last edited by milalic on Wed Nov 22, 2006 4:41 pm, edited 3 times in total.
- YuccaPatrol
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So much for acedemic types. You got my interest so I did a little googling on "C. puer" and just about barfed. Where is pita when you need them?
George Henry Penn, Joe B. Black
American Midland Naturalist, Vol. 70, No. 1 (Jul., 1963), pp. 149-158
doi:10.2307/2422778[/quote]
Orientation of the Dwarf Crawfishes Cambarellus shufeldti (Faxon) and C. puer Hobbs in a Simple MazeOrientation of two species of dwarf crawfishes, Cambarellus shufeldti and C. puer, were studied in simple Y-shaped mazes. All crawfish were kept in a state of duress by continual prodding at the rear and rough handling during the five successive runs daily in the mazes. The majority of individuals of both species (> 79%) displayed consistent behavior in turning into one fork of the maze. The majority (95%) responded positively to cover when one fork of the maze was covered. Following extirpation of one eyestalk, 55% responded positively to cover, but following extirpation of both eyestalks only 37% responded to cover. Following removal of one chela, 86% responded positively to cover; and, following removal of both chelae, 86% still responded positively to cover.
George Henry Penn, Joe B. Black
American Midland Naturalist, Vol. 70, No. 1 (Jul., 1963), pp. 149-158
doi:10.2307/2422778[/quote]
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You sure do!YuccaPatrol wrote:Yes, that doesn't look like a very well designed experiment. I like to think that we "academic types" do a little bit of a better job these days than they did almost 50 years ago. . . .
I see Faxon & Hobbs in lots of the literature on these animals. I can't imagine what they were thinking.
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Hobbs is a god among crayfish biologists. You see his name so often because he was the one who originally named more species of crayfish in the past century than anyone ever has or ever will. Faxon laid a lot of the groundwork for crayfish biology earlier in the 1800's.
In this case, Faxon and Hobbs are referenced for their role in naming the species that Penn and Black were tormenting for "research".
These days, behavioral research tends to favor a controlled replication of a more natural behavior than what you would see when crayfish are harrassed and have their limbs amputated.
In this case, Faxon and Hobbs are referenced for their role in naming the species that Penn and Black were tormenting for "research".
These days, behavioral research tends to favor a controlled replication of a more natural behavior than what you would see when crayfish are harrassed and have their limbs amputated.
Last edited by YuccaPatrol on Mon Nov 20, 2006 8:32 pm, edited 1 time in total.
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C. puer pictures and information
PH: 8
temp: 73F
conductivity: 550
Pictures of adults:
babies:
adult and baby:
Enjoy,
Pedro
temp: 73F
conductivity: 550
Pictures of adults:
babies:
adult and baby:
Enjoy,
Pedro