MANDIBULAR AND DENTAL VARIATION AND THE EVOLUTION OF SUCTION FEEDING IN ODONTOCETI
- A. Werth
- Geography
- 6 June 2006
Detailed morphometric analysis of osteological and necropsy specimens indicates that blunt heads and wide jaws, both of which create a more circular mouth opening and thus improve water flow for suction feeding, are common in Odontoceti and found in all families except freshwater river dolphins, which are exclusively long-snouted.
CHAPTER 16 – Feeding in Marine Mammals
- A. Werth
- Environmental Science
- 2000
A KINEMATIC STUDY OF SUCTION FEEDING AND ASSOCIATED BEHAVIOR IN THE LONG‐FINNED PILOT WHALE, GLOBICEPHALA MELAS (TRAILL)
- A. Werth
- Psychology
- 1 April 2000
Analysis of videotaped feeding sequences provides novel documentation of suction feeding in captive juvenile long-finned pilot whales (Globicephala melas) and shows depression and retraction of the large, piston-like tongue generate negative intraoral pressures for prey capture and ingestion.
Models of hydrodynamic flow in the bowhead whale filter feeding apparatus
- A. Werth
- Environmental ScienceJournal of Experimental Biology
- 15 September 2004
Results indicate that unique features of balaenid oral construction and function not only permit steady, unidirectional flow of water through the mouth, but also establish Bernoulli and Venturi effects during feeding.
Odontocete suction feeding: Experimental analysis of water flow and head shape
- A. Werth
- BiologyJournal of morphology
- 1 December 2006
Small‐gape suction could be used by odontocetes of all head and oral shapes to draw prey sufficiently close to the mouth for suction ingestion or grasping via dentition, and should profit by evolution of a rounder mouth opening through progressive shortening and widening of the rostrum and jaws.
Functional Morphology of the Sperm Whale (Physeter macrocephalus) Tongue, with Reference to Suction Feeding
- A. Werth
- Biology
- 1 December 2004
Abstract Gross and microscopic examination of the tongue and hyolingual apparatus of the sperm whale (Physeter macrocephalus) revealed numerous dis-tinct differences from those of other toothed…
Avoiding the Pitfall of Progress and Associated Perils of Evolutionary Education
- A. Werth
- PsychologyEvolution: Education and Outreach
- 10 May 2012
People reflexively see all change as implying inevitably increasing progress and complexity. This expected directionality is especially observed in students’ views of living things, with some species…
Flow-dependent porosity and other biomechanical properties of mysticete baleen
- A. Werth
- EngineeringJournal of Experimental Biology
- 1 April 2013
Testing sections of baleen from bowhead whales, Balaena mysticetus, and humpback whales, alone or in groups representing miniature ‘racks’, in a flow tank through which water and buoyant particles circulated with variable flow velocity explored biomechanical and material properties.
Filtration area scaling and evolution in mysticetes: trophic niche partitioning and the curious cases of sei and pygmy right whales
- A. Werth, J. Potvin, R. Shadwick, Megan M Jensen, D. Cade, J. Goldbogen
- Environmental Science
- 18 September 2018
Oral cavity hydrodynamics and drag production in Balaenid whale suspension feeding
This paper discusses the simulation of baleen filtration hydrodynamics based on a type of hydraulic circuit modeling commonly used in microfluidics, but adapted to the much higher Reynolds number flows typical of whale hydrodynamicics.
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