a protease inhibitor of the kunitz family from skin secretions of the tomato frog, dyscophus guineti (microhylidae).norepinephrine-stimulated skin secretions of the tomato frog, dyscophus guineti, contained a trypsin inhibitor whose primary structure was established as: spaevcf lpk(10) esglcraral(20) ryyydrgdgk(30) ceefiyggcg(40) gngnny ksll(50) tckisce. this amino acid sequence identifies the peptide as a member of the kunitz/bovine pancreatic trypsin inhibitor (bpti) family and demonstrates that selective evolutionary pressure has acted to conserve those domains in the molecule (corresponding to positions 1 ...200011162457
effect of dietary carotenoids on vitamin a status and skin pigmentation in false tomato frogs (dyscophus guineti).several species in captivity develop nutritional diseases including vitamin a deficiency; cases of this disease have been documented in amphibians, which may be linked to an insectivorous diet lacking in vitamin a or carotenoids. adults and young of dyscophus guineti were fed three diets over 9 weeks to evaluate effects on carotenoids and vitamin a status and skin pigmentation. feeder crickets were either supplemented with soy oil (control, con), soy oil enriched with β-carotene (bc) or mixed ca ...201425266459
mitochondrial introgressive hybridization following a demographic expansion in the tomato frogs of madagascar, genus dyscophus.madagascar is a biodiversity hotspot with a unique fauna and flora largely endemic at the species level and highly threatened by habitat destruction. the processes underlying population-level differentiation in madagascar's biota are poorly understood and have been proposed to be related to pleistocene climatic cycles, yet the levels of genetic divergence observed are often suggestive of ancient events. we combined molecular markers of different variability to assess the phylogeography of madaga ...201324308649
prey location, biomechanical constraints, and motor program choice during prey capture in the tomato frog, dyscophus guineti.this study investigated how visual information about prey location and biomechanical constraints of the feeding apparatus influence the feeding behavior of the tomato frog, dyscophus guineti. when feeding on prey at small azimuths (less than +/- 40 degrees), frogs aimed their heads toward the prey but did not aim their tongues relative to their heads. frogs projected their tongues rapidly by transferring momentum from the lower jaw to the tongue. storage and recovery of elastic energy by the mou ...200919657661
odontomas in frogs.odontomas are variably differentiated, hamartoma-like proliferations of odontogenic epithelium, pulp ectomesenchyme (odontoblasts), and dental matrix. frogs are polyphyodont and homodont. their teeth also differ from mammals in that they are restricted to the upper jaw in adults and lack a periodontal ligament and cementum, attaching directly to the underlying bone. odontomas were identified in an african clawed frog (xenopus laevis), a false tomato frog (dyscophus guineti), and a tomato frog of ...202031551010
what is your diagnosis? swab of an eyelid swelling from a tomato frog. 201931012977
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