DURIE, C.J.*; TURINGAN, R.G.: Relationship between durophagy and feeding functional design in marine fishes: intraspecific variation in ecological morphology The relationship between oral jaw biomechanics and consumption of hard prey was compared between populations of two perciform and five tetraodontiform species to examine intraspecific ecomorphological variation in marine fishes. Gut content analysis revealed that the […]
year: 2001
Feeding in Serrasalmine Fishes A Comparison of Suction and Biting Prey Capture
JANOVETZ, J.: Feeding in Serrasalmine Fishes: A Comparison of Suction and Biting Prey Capture Most fishes capture prey by suction feeding, rapidly expanding the oral cavity to create an inward flow of water that transports prey into the mouth. This type of prey capture is primitive for osteichthyes and has been the subject of considerable […]
A Comparison of Prey Capture Behavior and Kinematics in Three Ram Feeding Fishes
Porter, H.T.*; Motta, P.J.: A Comparison of Prey Capture Behavior and Kinematics in Three Ram Feeding Fishes Ram feeding is the process by which a predatory fish uses a high-velocity lunge or chase to overtake its prey. This study compares the strike and prey capture behaviors and kinematics of three species of ram-feeding fishes: Florida […]
The intertwining influences of prey, head shape, and attack behavior on gill raker morphology
WILLINK, P.W.: The intertwining influences of prey, head shape, and attack behavior on gill raker morphology Gill rakers are believed to play a critical function during the feeding of fishes. The predominant view is that gill rakers strain prey from the medium. Long, closely-spaced gill rakers are correlated with feeding on small prey, whereas short, […]
The effect of temperature on feeding characteristics in two sympatric crayfish species
CROLL, S.L.*; WATTS, S.A.: The effect of temperature on feeding characteristics in two sympatric crayfish species Crayfish are an integral component of many freshwater habitats. They often impact the environment through vegetative grazing, burrowing activities, and predation. The red swamp crayfish, Procambarus clarkii (PC), and the white river crayfish, P. zonangulus (PZ), are commonly found […]
The Functional Morphology of Jaw Protrusion Among Neotropical Cichlids
Waltzek, T.B.*; Wainwright, P.C.: The Functional Morphology of Jaw Protrusion Among Neotropical Cichlids The evolution of protrusible upper jaws among acanthopterygian teleosts has long been argued a major factor contributing to the success of this extremely diverse group of fishes. Yet, few studies have investigated upper jaw protrusion in a comparative framework. Additionally, previously unstudied […]
How do gill rakers function in suspension-feeding fishes
SANDERSON, S.L.*; CHEER, A.Y.; GOODRICH, J.S.; GRAZIANO, J.D.; CALLAN, W.T.: How do gill rakers function in suspension-feeding fishes? Gill rakers have been assumed to serve as either (1) a sieve that accumulates particles larger than the mesh size or (2) a sticky filter that retains particles encountered via a hydrosol filtration mechanism. However, our video […]
How carnivorous deep-sea ascidians catch their prey
Young, C. M.*; Vazquez, E.: How carnivorous deep-sea ascidians catch their prey. Two new species of carnivorous deep-sea octacnemid ascidians have recently been discovered at bathyal depths in the Bahamas, one in the genus Dicopia and one in the genus Kaikoja. Analysis of gut contents indicates that both species consume mostly small crustaceans, though we […]
Functional and morphological bases of prey-capture performance in marine-fish larvae
TURINGAN, R.G.: Functional and morphological bases of prey-capture performance in marine-fish larvae. A critical period, marked by a rapid decline in population size, occurs immediately following yolk-absorption during the larval phase of marine teleosts. Biotic and abiotic factors associated with mortality during this critical period have been identified, but the causal link between these factors […]
Visual-Olfactory Fusion in the Flight Behavior of Drosophila
Tarsitano, M. *; Dickinson, M.: Visual-Olfactory Fusion in the Flight Behavior of Drosophila Food is often associated with odor, so olfaction is an important sense which animals use to guide them to food. Course control in insects, however, is strongly influenced by visual cues. We are testing Drosophila to see how the visual algorithms they […]