sexual size dimorphism in hyla savignyi audouin, 1827 (anura: hylidae) from kermanshah province, western iran

The tadpoles of Hyla rufitela (Anura: Hylidae).

The validity of the published description of Hyla rufitela is questioned because the origin of the described tadpoles does not correspond to the distribution of this species. The present description, based on tadpoles that were hatched from two egg masses from the Caribbean lowland of Costa Rica, includes tadpoles raised to adult frogs to verify the species. The newly described tadpoles differ ...

Conserved karyotypes in the Hyla pulchella species group (Anura, Hylidae).

Cytogenetic analyses were done on specimens of Hyla marginata and on three populations of H. semiguttata differing in morphology and in the physical parameters of their advertisement call, as well as in individuals of Hyla sp. (aff. semiguttata). All specimens had 2n=24 chromosomes with a morphology very similar to that of other 24-chromosome Hyla species. Hyla semiguttata and H. marginata show...

Sexual Size Dimorphism in Relation to Age and Growth in Hypsiboas cordobae (Anura: Hylidae) from Córdoba, Argentina

—Most anurans exhibit sexual size dimorphism (SSD). This morphological variation between the sexes may be attributed to different ages at maturity, growth rate, or longevity. We present the first data on age structure and growth pattern of Hypsiboas cordobae using skeletochronology, and analyze SSD considering age-specific differences in body size based on 71 individuals. Snout-vent length (SVL...

Prevalence of cadmium resistance in Staphylococcus sciuri isolated from the Gray Treefrog, Hyla chrysoscelis (Anura: Hylidae)

Bioacoustic analysis of advertisement call in Hyla nana and Hyla sanborni (Anura, Hylidae) in Botucatu, São Paulo, Brazil.

Vocal communication traits of Hyla nana and Hyla sanborni, of the nana species group, were studied from August 1997 until June 1999 in two large permanent ponds located in an open field in Botucatu, São Paulo State. One hundred thirty-one individuals, 71 of H. nana and 58 of H. sanborni, were recorded in the beginning of their vocalization activity and during chorus vocalization. The rhythms of...

The use of red cell antigens for timing break-down of erythrocytes during digestion in Ornithodoros savignyi (Audouin, 1827).

The feeding and digestive processes in argasids (tampans) differ from those in the ixodids in that the tampans take up a large amount of blood in a short time. A high concentration of blood proteins is soon attained since the argasids discharge a large volume of watery fluid from the coxal organ either during or shortly after a meal. Few references could be found in the literature about the tim...