David Bourget (Western Ontario)
David Chalmers (ANU, NYU)
Rafael De Clercq
Ezio Di Nucci
Jack Alan Reynolds
Learn more about PhilPapers
Acta Biotheoretica 34 (2-4):219-232 (1985)
A comparison of nineteen taxa of teleost fishes suggests the gradual acquisition of systems of upper jaw protrusion in the course of fish evolution. However, in view of the loss of protrusion in several groups of advanced teleosts the biomechanicsof protrusile jaws are analysed based on the hydrodynamics of suction feeding. Calculations show that protrusion may reduce the energy otherwise spent in a feeding act to get the predator's mouth as near to the prey in the same time with about 80%. Other generalized advantages and disadvantages of upper jaw protrusion are explained. Detailed ecological data to calculate the balance between pros and cons of jaw protrusion of a particular species in its habitat are still lacking. There is no incompatibility between presence and disappearance of protrusile jaws in fish and current neo-darwinistic theories of evolution.
|Keywords||No keywords specified (fix it)|
No categories specified
(categorize this paper)
Setup an account with your affiliations in order to access resources via your University's proxy server
Configure custom proxy (use this if your affiliation does not provide a proxy)
|Through your library|
References found in this work BETA
No references found.
Citations of this work BETA
No citations found.
Similar books and articles
Doug Gurian-Sherman (2008). Cafos Uncovered: The Untold Costs of Confined Animal Feeding Operations. Union of Concerned Scientists.
Faith E. Fletcher, Paul Ndebele & Maureen C. Kelley (2008). Infant Feeding and Hiv in Sub-Saharan Africa: What Lies Beneath the Dilemma? Theoretical Medicine and Bioethics 29 (5):307-330.
J. G. M. Kooloos & G. A. Zweers (1991). Integration of Pecking, Filter Feeding and Drinking Mechanisms in Waterfowl. Acta Biotheoretica 39 (2):107-140.
George Henderson (1961). Cain's Jaw-Bone. Journal of the Warburg and Courtauld Institutes 24 (1/2):108-114.
P. M. Kulesa, G. C. Cruywagen, S. R. Lubkin, M. W. J. Ferguson & J. D. Murray (1996). Modelling the Spatial Patterning of Teeth Primordia in the Alligator. Acta Biotheoretica 44 (2):153-164.
Gerhard Roth & David B. Wake (1985). Trends in the Functional Morphology and Sensorimotor Control of Feeding Behavior in Salamanders: An Example of the Role of Internal Dynamics in Evolution. Acta Biotheoretica 34 (2-4):175-191.
R. J. Andrew (1998). Cyclicity in Speech Derived From Call Repetition Rather Than From Intrinsic Cyclicity of Ingestion. Behavioral and Brain Sciences 21 (4):513-514.
E. Otten (1985). Proportions of the Jaw Mechanism of Cichlid Fishes Changes and Their Meaning. Acta Biotheoretica 34 (2-4):207-217.
Added to index2009-01-28
Total downloads16 ( #220,434 of 1,792,101 )
Recent downloads (6 months)4 ( #207,498 of 1,792,101 )
How can I increase my downloads?