Chromosome number and pairs in the somatic mitoses of Ambystoma tigrinum
نویسندگان
چکیده
منابع مشابه
A Model Host-pathogen System for Studying Infectious Disease Dynamics in Amphibians: Tiger Salamanders (ambystoma Tigrinum) and Ambystoma Tigrinum Virus
Pathogens are among the suspected causes of declining amphibian populations, but studying infectious diseases in small, threatened populations is ethically and experimentally questionable. Progress on understanding amphibian diseases requires model host-pathogen systems with populations large enough for robust experimental designs that do not threaten the amphibian host with extinction. We repo...
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Pathogenic diseases and environmental contaminants are two of the leading hypotheses for global amphibian declines, yet few studies have examined the influence of contaminants on disease susceptibility. In this study, we examined effects of ecologically relevant doses of atrazine (0, 1.6, 16, and 160 microg/L), sodium nitrate (0, 6.8, 68 mg/L), and their interactions on susceptibility of four l...
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Nicotinamide adenine dinucleotide phosphate reduced-diaphorase (NADPH-d) histochemistry was investigated in the axolotl (Ambystoma tigrinum) lateral line. Hair cells of neuromast organs of the head skin and neurons of the postotic ganglia showed a significant NADPH-d reaction. Multiunit recording of neuromast afferent activity was also performed. Nitric oxide synthase inhibitor N omega-nitro-L-...
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15 صفحه اولMechanics of lung ventilation in a larval salamander Ambystoma tigrinum.
The larval stage of the tiger salamander Ambystoma tigrinum is entirely aquatic, but the larvae rely on their lungs for a large proportion of their oxygen uptake. X-ray video and pressure measurements from the buccal and body cavities demonstrate that the larvae inspire using a two-stroke buccal pump and exhale actively by contracting the hypaxial musculature to increase body pressure. Larvae b...
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ژورنال
عنوان ژورنال: Journal of Morphology
سال: 1919
ISSN: 0362-2525,1097-4687
DOI: 10.1002/jmor.1050330105