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Full-Text Articles in Marine Biology
Three-Dimensional Movements Of The Pectoral Fin During Yaw Turns In The Pacific Spiny Dogfish, Squalus Suckleyi, Sarah L. Hoffman, Cassandra M. Donatelli, Samantha C. Leigh, Elizabeth L. Brainerd, Marianne E. Porter
Three-Dimensional Movements Of The Pectoral Fin During Yaw Turns In The Pacific Spiny Dogfish, Squalus Suckleyi, Sarah L. Hoffman, Cassandra M. Donatelli, Samantha C. Leigh, Elizabeth L. Brainerd, Marianne E. Porter
Engineering Faculty Articles and Research
Fish pectoral fins move in complex ways, acting as control surfaces to affect force balance during swimming and maneuvering. Though objectively less dynamic than their actinopterygian relatives, shark pectoral fins undergo complex conformational changes and movements during maneuvering. Asynchronous pectoral fin movement is documented during yaw turning in at least two shark species but the three-dimensional (3D) rotation of the fin about the body axes is unknown. We quantify the 3D actuation of the pectoral fin base relative to the body axes. We hypothesized that Pacific spiny dogfish rotate pectoral fins with three degrees of freedom relative to the body …
The Hagfish Gland Thread Cell: A Fiber-Producing Cell Involved In Predator Defense, Douglas S. Fudge, Sarah Schorno
The Hagfish Gland Thread Cell: A Fiber-Producing Cell Involved In Predator Defense, Douglas S. Fudge, Sarah Schorno
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Fibers are ubiquitous in biology, and include tensile materials produced by specialized glands (such as silks), extracellular fibrils that reinforce exoskeletons and connective tissues (such as chitin and collagen), as well as intracellular filaments that make up the metazoan cytoskeleton (such as F-actin, microtubules, and intermediate filaments). Hagfish gland thread cells are unique in that they produce a high aspect ratio fiber from cytoskeletal building blocks within the confines of their cytoplasm. These threads are elaborately coiled into structures that readily unravel when they are ejected into seawater from the slime glands. In this review we summarize what is currently …