Adaptive, Chemically Mediated Fright Response in Tadpoles of the Southern Leopard Frog, Rana utricularia

Copeia ◽  
1996 ◽  
Vol 1996 (2) ◽  
pp. 455 ◽  
Author(s):  
Hugh Lefcort
Keyword(s):  
Leopard Frog ◽  
Rana Utricularia

Eph/ephrin A- and B-family expression patterns in the leopard frog (Rana utricularia)

2005 ◽  
Vol 158 (1-2) ◽  
pp. 102-106 ◽  
Author(s):  
Frank Scalia ◽  
David A. Feldheim
Keyword(s):  
Expression Patterns ◽  
Leopard Frog ◽  
Rana Utricularia

Tadpole bullies: examining mechanisms of competition in a community of larval anurans

1998 ◽  
Vol 76 (1) ◽  
pp. 144-153 ◽  
Author(s):  
Sarah Grimké Faragher ◽  
Robert G Jaeger
Keyword(s):  
Laboratory Experiments ◽  
Feeding Rate ◽  
Interspecific Interactions ◽  
Interference Competition ◽  
Leopard Frog ◽  
Hyla Cinerea ◽  
Chemical Interference ◽  
Larval Anurans ◽  
Green Treefrog ◽  
Rana Utricularia

We examined interference competition during interspecific interactions of larval anurans to determine its importance. We conducted laboratory experiments to examine behavioral and chemical interference competition between tadpoles of the southern leopard frog (Rana utricularia) and those of the green treefrog (Hyla cinerea). Water preconditioned byR. utricularia tadpoles significantly decreased the growth and increased the mortality of H. cinerea tadpoles compared with control treatments. In addition, R. utricularia tadpoles inhibited the feeding rate ofH. cinerea tadpolesby harassing them, and these interactions significantly decreased the growth and increased the mortality of theH. cinerea tadpoles. Rana utricularia tadpoles apparently use both chemical interference and aggressive behavior in securing a competitive advantage over H. cinerea tadpoles, and the H. cinerea tadpoles suffer from these interactions. Intraspecific chemical and behavioral interference competition also significantly decreased the growth of larval H. cinerea. In natural ponds, R. utricularia tadpoles that inhibit the growth and increase the mortality of H. cinerea tadpoles may increase their own chances of survival and metamorphosis, while H. cinerea tadpoles that avoid interactions with conspecifics and with R. utricularia tadpoles may increase their own chances of survival and metamorphosis.

Bicarbonate and CO2 transport across the skin of the leopard frog, Rana pipiens: effect of PGF2alpha

1997 ◽  
Vol 272 (2) ◽  
pp. R640-R647 ◽  
Author(s):  
O. A. Candia ◽  
T. Yorio
Keyword(s):  
Methodological Approach ◽  
Transport Processes ◽  
Leopard Frog ◽  
Bicarbonate Transport ◽  
Amphibian Skin ◽  
Acid Base ◽  
Reliable Determination ◽  
Net Flux ◽  
Unidirectional Fluxes

The amphibian skin represents an important organ for osmoregulation and, like the mammalian kidney, maintains acid-base balance by secreting protons or base. However, the lack of a reliable and accurate method to measure the contribution of unidirectional fluxes of HCO3- ions to this mechanism has been an obstacle for the determination of the role of bicarbonate in epithelial acid-base homeostasis. Recently, one of us developed a method that allows for the reliable determination of transepithelial fluxes of bicarbonate, and this method was applied to determine unidirectional fluxes of (14)CO2 and H(14)CO3 under a variety of conditions. We report that the combined CO2 and HCO3- mucosal-to-serosal flux under 5% CO2 was 40% larger than the opposing flux, giving a net flux in the mucosal-to-serosal direction. This net flux was inhibited by acetazolamide. In CO2-free conditions, there was no detectable net flux; however, acetazolamide and PGF(2alpha) attenuated the mucosal-to-serosal flux and established an apparent secretion of HCO3-. A model is presented that depicts twelve vectors or components to the CO2 plus HCO3- fluxes in the frog skin. This model can accurately reproduce the experimental values measured from unidirectional fluxes of CO2 and HCO3- under a variety of conditions and can explain the effects of PGF(2alpha) on unidirectional 14C-labeled fluxes as a consequence of inhibition of H+ secretion to the apical bath, similar to what was previously suggested by our laboratory using a different methodological approach. The present method, utilizing radiolabeled HCO3-, may be useful as a means to evaluate the mechanism of action of hormones and drugs that may regulate acid-base homeostasis by altering proton and bicarbonate transport processes.

Hopping and swimming in the leopard frog,Rana pipiens: I. Step cycles and kinematics

1996 ◽  
Vol 230 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Susan E. Peters ◽  
Lynn T. Kamel ◽  
David P. Bashor
Keyword(s):  
Rana Pipiens ◽  
Leopard Frog

Bone Marrow Restoration of Transplantation Immunity in the Leopard Frog Rana pipiens

1970 ◽  
Vol 135 (2) ◽  
pp. 406-411 ◽  
Author(s):  
E. L. Cooper ◽  
D. W. Schaefer
Keyword(s):  
Bone Marrow ◽  
Rana Pipiens ◽  
Leopard Frog ◽  
Transplantation Immunity

scholarly journals The histology of the blood and the red bone-marrow of the leopard frog, Rana pipiens

1919 ◽  
Vol 25 (4) ◽  
pp. 436-480 ◽  
Author(s):  
H. E. Jordan
Keyword(s):  
Bone Marrow ◽  
Rana Pipiens ◽  
Leopard Frog ◽  
Red Bone Marrow

THE ISOLATION AND PROPERTIES OF VIRUSES FROM RANA PIPIENS: THEIR POSSIBLE RELATIONSHIP TO THE RENAL ADENOCARCINOMA OF THE LEOPARD FROG*

2006 ◽  
Vol 126 (1) ◽  
pp. 237-255 ◽  
Author(s):  
Allan Granoff ◽  
Paul E. Came ◽  
Keen A. Rafferty
Keyword(s):  
Rana Pipiens ◽  
Leopard Frog ◽  
Renal Adenocarcinoma

Leopard frog priorities in choosing between prey at different locations

2011 ◽  
Vol 86 (1) ◽  
pp. 138-142 ◽  
Author(s):  
Elizabeth A. Dudkin ◽  
Teri Peiffer ◽  
Benjamin Burkitt ◽  
Christopher N. Neeb ◽  
Edward R. Gruberg
Keyword(s):  
Leopard Frog
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