Prey transport in “palatine‐erecting” elapid snakes

  title={Prey transport in “palatine‐erecting” elapid snakes},
  author={Alexandra Deufel and David Cundall},
  journal={Journal of Morphology},
Cobras and mambas are members of a group of elapid snakes supposedly united by the morphology and inferred behavior of their palatine bone during prey transport (palatine erectors). The palatine erectors investigated (Dendroaspis polylepis, Naja pallida, Ophiophagus hannah, Aspidelaps scutatus, A. lubricus) show differences in the morphology of their feeding apparatus that do not affect the overall behavior of the system. We delineated the structures directly involved in producing palatine… 
Functional morphology of the palato‐maxillary apparatus in “Palatine dragging” snakes (Serpentes: Elapidae: Acanthophis, Oxyuranus)
It is found that the palatine in draggers does not move as a straight extension of the pterygoid as originally proposed and can be explained by a typical colubroid muscle contraction pattern, which acts on a set of core characters shared among all derived snakes.
The buccal buckle: the functional morphology of venom spitting in cobras
The displacements of the palato-maxillary arch, which form the first part of the spitting mechanism, are very similar to the motions of these bones during prey ingestion (the pterygoid walk), suggesting that venom spitting may have evolved from a specialization of prey ingestion, rather than prey capture.
Burrowing with a kinetic snout in a snake (Elapidae: Aspidelaps scutatus)
It is found that the skull of the fossorial shield‐nosed cobra (Aspidelaps scutatus) is not reinforced and retains the kinetic potential typical of many non‐fossorial snakes.
The ecological origins of snakes as revealed by skull evolution
An integrative geometric morphometric approach is used that suggests evolution from terrestrial to fossorial in the most recent common ancestor of extant snakes, and indicates that snakes later evolved novel craniofacial specializations through global acceleration of skull development.
Three-Fingered RAVERs: Rapid Accumulation of Variations in Exposed Residues of Snake Venom Toxins
It is shown that Type I, II and III α-neurotoxins have evolved with extreme rapidity under the influence of positive selection and a theory of Rapid Accumulation of Variations in Exposed Residues (RAVER) to illustrate the significance of point mutations, guided by focal mutagenesis and positive selection in the evolution and diversification of 3FTx.
Aquatic adaptations in a Neotropical coral snake: A study of morphological convergence
Fil: Silva, Fernanda Magalhaes. Museu Paraense Emilio Goeldi; Brasil. Universidade Federal do Para; Brasil


Activity of Head Muscles During Feeding by Snakes: A Comparative Study
The data suggest that the heads of colubroid snakes have evolved two partially separated structural-functional units, a medial swallowing unit and a lateral prey capture unit.
Feeding in water snakes: An electromyographic study
EMGs indicate that the complex bone movements of the latter stage of Mouth opening and the initial stage of mouth closing are dependent upon the simultaneous firing of a number of morphologically antagonistic muscles.
Comments on the evolution of the jaw adductor musculature of snakes
The aponeurotic system present in anilioid snakes is here described as being also present in colubroid and booid snakes, and is thus hypothesized to be homologous.
The Development of the Osteocranium of the Egyptian Cobra
The embryonic osteocranium of the elapid snake, Naja haje (Egyptian cobra) has been studied. The osteocranium of the 166-mm embryo has been graphically reconstructed and described in detail. Those of
Feeding Mechanism in the Rattlesnake Crotalus durissus
Cineradiography and electromyography were used to study the strike and swallowing behaviour of the rattlesnake and the likely roles played by individual muscles in abduction, protraction, and adduction of jaw elements were determined.
Monophyly of elapid snakes (Serpentes: Elapidae). An assessment of the evidence
It is suggested that, at least for the present, the family Elapidae be retained in its broad sense to include all proteroglyphous snakes.
CHAPTER 9 – Feeding in Snakes
The construction for feeding in Rattlesnakes
The mechanism itself is interesting from a general functional-anatomical point of view, since it presents a case of formation of a delicate structural balance to meet two contradictory demands in a part of the feedingconstruction.
Molecular phylogeny of elapid snakes and a consideration of their biogeographic history
  • J. Keogh
  • Biology, Environmental Science
  • 1998
An African, Asian, or Afro-Asian origin for elapids as a group, with independent Asian origins for American coral snakes and the hydrophiines is suggested.
Phylogenetic relationships of elapid snakes based on cytochrome b mtDNA sequences.
To resolve the relationships of the African, American, and Asian species to each other and to the marine/Australo-Melanesian clade, the entire cytochrome b gene for 28 elapids was sequenced.