• Publications
  • Influence
Visual system evolution and the nature of the ancestral snake
The dominant hypothesis for the evolutionary origin of snakes from ‘lizards’ (non‐snake squamates) is that stem snakes acquired many snake features while passing through a profound burrowingExpand
  • 50
  • 7
Morphological and physiological specialization for digging in amphisbaenians, an ancient lineage of fossorial vertebrates
SUMMARY Amphisbaenians are legless reptiles that differ significantly from other vertebrate lineages. Most species dig underground galleries of similar diameter to that of the animal. We studied theExpand
  • 65
  • 6
  • PDF
Morphology of the femoral glands in the lizard Ameiva ameiva (teiidae) and their possible role in semiochemical dispersion
Many lizards have epidermal glands in the cloacal or femoral region with semiochemical function related to sexual behavior and/or territorial demarcation. Externally, these glands are recognized as aExpand
  • 17
  • 5
  • PDF
Antileishmanial and antitrypanosomal activity of bufadienolides isolated from the toad Rhinella jimi parotoid macrogland secretion.
Amphibian skin secretions are considered a rich source of biologically active compounds and are known to be rich in peptides, bufadienolides and alkaloids. Bufadienolides are cardioactive steroidsExpand
  • 87
  • 4
Parotoid macroglands in toad (Rhinella jimi): their structure and functioning in passive defence.
When toads (Rhinella) are threatened they inflate their lungs and tilt the body towards the predator, exposing their parotoid macroglands. Venom discharge, however, needs a mechanical pressure ontoExpand
  • 68
  • 4
  • PDF
Cytotoxic and antiproliferative effects of crude amphibian skin secretions on breast tumor cells
Abstract Amphibian skin secretions are rich sources of biologically active compounds, including antimicrobial peptides, alkaloids and steroids. Bufadienolidic steroids, for instance, may inhibitExpand
  • 20
  • 4
Comparative morphological study of the venom glands of the centipede Cryptops iheringi, Otostigmus pradoi and Scolopendra viridicornis.
Centipedes are widely distributed over all the continents. As they are well adapted to urban areas they can often cause accidents to humans by injecting venom produced in the glands located insideExpand
  • 20
  • 4
Cell Culture Derived AgMNPV Bioinsecticide: Biological Constraints and Bioprocess Issues
We have studied parameters for optimizing the Spodoptera frugiperda (Sf9) cell culture and viral infection for the production of Anticarsia gemmatalis multiple nucleopolyhedrosis virus (AgMNPV)Expand
  • 28
  • 4
Epidermal glands in Squamata: Microscopical examination of precloacal glands in Amphisbaena alba (Amphisbaenia, Amphisbaenidae)
The femoral or cloacal region of many species of lizards and amphisbaenians exhibits epidermal glands. The pores of these glands are plugged with holocrine solid secretions that serve asExpand
  • 28
  • 4
Passive and active defense in toads: the parotoid macroglands in Rhinella marina and Rhaebo guttatus.
Amphibians have many skin poison glands used in passive defense, in which the aggressor causes its own poisoning when biting prey. In some amphibians the skin glands accumulate in certain regionsExpand
  • 40
  • 3
  • PDF