clawed frog
Genetic Basis of Spectral Tuning in the Violet-Sensitive Visual Pigment of African Clawed Frog, Xenopus laevis
... Construction of chimeric SWS1 pigments and site-directed mutagenesis: S hi and Y okoyama (2003) engineered SWS1 pigments of major vertebrate ancestors by introducing a total of 70 amino acid changes into several extant ...
8
Distribution and effects of PACAP, VIP, nitric oxide and GABA in the gut of the African clawed frog Xenopus laevis
... The distribution and possible effects on gastrointestinal motility of pituitary adenylate cyclase-activating polypeptide (PACAP), vasoactive intestinal polypeptide (VIP), nitric oxide and γ-amino-butyric acid (GABA) were ...
12
Activation of extracellular signal regulated kinases during dehydration in the African clawed frog, Xenopus laevis
... In its native environment the African clawed frog, Xenopus laevis , can experience seasonally arid conditions that impose dehydration stress. Activation of intracellular signal transduction cascades can ...
9
Multiple massive domestication and recent amplification of Kolobok superfamily transposons in the clawed frog Xenopus
... the clawed frog Xenopus, we found that two subfamilies of the TxpB family belonging to the piggyBac superfam- ily have employed different survival ...
17
Temperature dependence of locomotor performance in the tropical clawed frog, Xenopus tropicalis
... Here we use the tropical clawed frog, Xenopus tropicalis, to explore effects of temperature on locomotor performance. Xenopus tropicalis is distributed throughout the West African rainforest belt (Rödel, ...
6
Developmental changes in oxygen consumption regulation in larvae of the South African clawed frog Xenopus laevis
... African clawed frogs (Xenopus laevis), as well as the resting and active rates of oxygen consumption of advanced larvae, are well known (see Burggren, 1984; Feder, 1981; Burggren and Just, 1992; Gatten et ...
11
Cardio respiratory ontogeny during chronic carbon monoxide exposure in the clawed frog Xenopus laevis
... in normoxic larvae, heart rate in CO-exposed animals changed significantly P⭐0.05 from the preceding stage, the only exception being NF 37–41.. Although development significantly influen[r] ...
12
Modulation of in vivo muscle power output during swimming in the African clawed frog (Xenopus laevis)
... Animals that move over a wide range of speeds experience variable forces on their body, requiring them to modulate muscle work and power output. Running animals, for example, increase muscle work to move up inclines ...
13
Differential and overlapping expression patterns of X dll3 and Pax 6 genes suggest distinct roles in olfactory system development of the African clawed frog Xenopus laevis
... Unlike X-dll3, which seems to be involved in the formation and maintenance of all nasal cavities, Pax-6 seems to have a narrower role in the development of the peripheral olfactory system of the frog X. laevis. ...
13
Aerial Versus Aquatic Oxygen Consumption in Larvae of the Clawed Frog, Xenopus Laevis
... Exclusively water-breathing Xenopus larvae resembled larvae with access to air in their total V02 in normoxic water, but differed from air-breathing larvae in their pponses to aquatic hy[r] ...
16
The Kinematics of Swimming in Larvae of the Clawed Frog, Xenopus Laevis
... [See Wassersug & Hoff 1985 for further discussion of the kinematic consequences of tail length for the Rana/Bufo group.] The amplitude of the travelling wave all along the body in Xenopu[r] ...
12
Differences in mobility at the range edge of an expanding invasive population of Xenopus laevis in the west of France
... The present study focuses on another highly and globally invasive amphibian, the African clawed frog Xenopus laevis Daudin 1802. The use of X. laevis as a model system in developmental and cellular biology ...
6
Trade offs between burst performance and maximal exertion capacity in a wild amphibian, Xenopus tropicalis
... Trade-offs are thought to impose barriers to phenotypic diversification and may limit the evolutionary responses of organisms to environmental changes. In particular, locomotor trade-offs between endurance or maximal ...
6
Mitochondrial Evidence on the Phylogenetic Position of Caecilians (Amphibia: Gymnophiona)
... Only the complete mtDNA sequence of a single am- Three data sets were analyzed separately: (1) all protein- phibian, the clawed frog Xenopus laevis (Anura), is cur- coding genes combined (except ND6 because ...
11
Observation of Frog Species in State University of Malang as a Preliminary Effort on Frog Conservation
... of frog, which potentially threats the frog’s life, if it does not take the environmental impact into careful ...of frog which survives at State University of Malang with, particularly the frog ...
5
Purification of Frog Oil Using Animal Bone-Base Activated Carbon
... 1.10 frog oil sample, while the equilibrium adsorption coefficient (k) was ...for frog oil sample purified by ...of frog oil occur on a heterogeneous surface by multilayer ...
5
INTRODUCTION TO EXPERT SYSTEMS
... This rule base would be searched and the first rule would be selected, because its antecedent (If Fanny cram and eats flies) matches our data. Now the consequent (Then X is a frog) is added to the data. The rule ...
9
The Action of Aldosterone and Related Corticosteroids on Sodium Transport across the Toad Bladder
... In the fourth set 8 experiments paired hemibladders were preincubated in aerated frog-Ringer's solution for about 15 hours, all solutions were then exchanged for fresh frog-Ringer's solu[r] ...
11
The Adrenal Secretion of Xenopus Laevis (The South African Clawed Toad)
... Since adrenaline is absent from extracts of pure kidney tissue itself, it has been assumed that the active substance is derived from these streaks, which probably represent the adrenal b[r] ...
5
Arboreal locomotion in rats – the challenge of maintaining stability
... 2002). Clawed mammals, however, whose grasping abilities are either absent or reduced, are less capable of generating torques to stabilize their body against unsteadying mediolateral forces (Schmitt, 2003a; ...
10