The study of the influence selenium on regeneration and fecundity crab Sesarma boulengeri Calman has been conducted. results demonstrated: effect walking legs S. Calman. Morphology regenerated appendage was different from control specimen. speed growth in bud lower than it depended size class crab. Regeneration index (R) higher small crabs large ones single autotomy double autotomy. Fecundity v...

La variación fenotípica de algunas especies a nivel geográfico, las convierte en excelentes modelos para evaluar los diferentes atributos evolutivos y responder preguntas relacionadas con su diversidad. Sumado ello, el constante esfuerzo muestreo ecosistemas altoandinos que incluyan localidades tipo la integración un novedoso conjunto datos, puede conducir hallazgos taxonómicos insospechados. E...

We describe and compare the tadpoles of nine Leptodactylodon species from Cameroon. The tadpoles of Leptodactylodon bicolor, L. mertensi, L. ovatus, L. perreti and L. ventrimarmoratus are herein reinvestigated, partly based on larger series than previously available. In addition we present first descriptions for the tadpoles of L. boulengeri, L. erythrogaster, L. ornatus, and L. cf. polyacanthu...

OBJECTIVES Little to nothing is known about human papillomavirus (HPV) susceptibility to disinfection. HPV is estimated to be among the most common sexually transmitted diseases in humans. HPV is also the causative agent of cervical cancers and other anogenital cancers and is responsible for a significant portion of oropharyngeal cancers. While sexual transmission is well documented, vertical a...

The global population status of many reptiles, particularly tortoises as one the most threatened tetrapod groups, necessitates conservation efforts and study. Baseline information about habitat use can help formulate strategies improve effectiveness surveys. I studied by Karoo Dwarf Tortoises (Chersobius boulengeri), an endangered South African endemic with only known to contain males, females,...

Behavioral thermoregulation is an important mechanism allowing ectotherms to respond to thermal variations. Its efficiency might become imperative for securing activity budgets under future climate change. For diurnal lizards, thermal microhabitat variability appears to be of high importance, especially in hot deserts where vegetation is highly scattered and sensitive to climatic fluctuations. ...