Since the early papers of Bohr & Hasselbalch (1900, 1903) and Murray (1925), considerable information concerning the growth and metabolic processes in the avian embryo has been accumulated (Romanoff, 1967). Respiratory and growth processes during embryonic life in many species of fishes, amphibians and mammals are also fairly well known. Only a few studies have been reported, however, on the me...

ilam province in southwest iran possesses varied climatic and geographical conditions leading to rich biodiversity. an investigating of the status of snakes in the province was carried out from june 2005 to march 2010. a total of 103 specimens were collected and identified. six families, 20 genera, and 26 species are represented, including boidae: eryx (eryx) jaculus turcicus; colubridae: colub...

1. Rates of water loss were measured in two aberrant scaleless water snakes, Natriu sipedon, and in six normal animals. 2. Pulmocutaneous water loss of the scaleless animals was equal to or less than that of the controls at 20, 27, and 34°C. 3. The thermal dependence of pulmocutaneous water loss in all snakes was low (Q,, = 1.31-1.89). 4. The proportion of total water loss due to cutaneous evap...

Since the early papers of Bohr & Hasselbalch (1900, 1903) and Murray (1925), considerable information concerning the growth and metabolic processes in the avian embryo has been accumulated (Romanoff, 1967). Respiratory and growth processes during embryonic life in many species of fishes, amphibians and mammals are also fairly well known. Only a few studies have been reported, however, on the me...

Among snakes four main types of terrestrial progression have been described: (i) serpentine movement which is observable in all, or nearly all, genera; (ii) concertina movement as briefly described by Wiedemann (1932) in Viper a and Coronella; (iii) crotaline or 'side-winding' as seen in Crotalus or Cerastes (Mosauer, 19320,6); and (iv) rectilinear movement as exhibited by boas and other large ...