Gastric function in Caiman crocodilus (Crocodylia: Reptilia)—II. Effects of temperature on pH and proteolysis
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Gastric function in Caiman crocodilus (Crocodylia: Reptilia). II. Effects of temperature on pH and proteolysis.
-1. In Caiman crocodilus, the pH of the gastric secretions during digestion may reach 1.2 in specimens kept between 20 and 30°C. C. crocodilus feeds and digests at 15°C, but the pH of gastric secretions did not drop below 1-8. 2. The gastric secretion increased in rate and hydrochloric acid concentration after injections of histamine (400 t~g/kg body weight, given in four hourly doses). The rat...
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-1. A cannulation method was devised that allows continuous safe gastric sampling and recording of intragastric pressure in Caiman crocodilus. 2. In C. crocodilus, fed 5 per cent of the body weight, complete gastric emptying takes an average of 99 (+_ 10) hr at 30°C, to an average of 315 (4-16) hr at 15°C. 3. Two types of gastric contractions were recorded in C. crocodilus, by means of intragas...
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ARMANDO H. ESCOBEDO-GALVÁN, FABIO G. CUPUL-MAGAÑA & JULIÁN A. VELASCO Laboratorio de Análisis Espaciales, Instituto de Biología, Universidad Nacional Autónoma de México, 04510 México D.F., México Centro Universitario de la Costa, Universidad de Guadalajara, Av. Universidad de Guadalajara No. 203, Delegación Ixtapa, C.P. 48280, Puerto Vallarta, Jalisco, México Corresponding author. E-mail: elcho...
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We studied growth of the caiman, Caiman crocodilus yacare, in the Brazilian Pantanal for 27 years between 1987 and 2013.We recaptured 647 of 7769 C. c. yacare initially marked in an area of 50 km(2), in two ranches. We were able to determine size at age accurately for 24 male and17 female caimans that had been marked at hatching or less than 1 year old, and recaptured over periods of 5 to 24 ye...
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The dorsal column nucleus of Caiman crocodilus was identified by using standard orthograde techniques to trace the degeneration that resulted from dorsal rhizotomies in brachial and lumbar regions. Although the dorsal column nucleus was difficult to locate in Nissl and fiber preparations, it was easily identified in histochemical material because it stained intensely with succinate dehydrogenas...
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ژورنال
عنوان ژورنال: Comparative Biochemistry and Physiology Part A: Physiology
سال: 1975
ISSN: 0300-9629
DOI: 10.1016/0300-9629(75)90370-9