LIUBICICH, Danielle M.*; SERANO, Julia M.; PATEL, Nipam H.; University of California, Berkeley; University of California, Berkeley; University of California, Berkeley: The role of Hox genes in crustacean appendage diversity Crustaceans display extraordinary diversity in appendage morphology and body regionalization. Although these animals display many unique morphological characteristics, they utilize patterning mechanisms conserved among all […]

CROTWELL, P.L.*; MABEE, P.M.; Univ. of South Dakota, Vermillion: Proximal-distal segmentation and evolution of the vertebrate skeleton Although anterior-posterior subdivision of the body axis is what is typically meant by �segmentation,� proximal-distal segmentation is a common occurrence in the development of the vertebrate skeleton. Fish fin rays and endoskeletal fin supports (radials) are segmented proximo-distally, […]

FR�BIUS, A.C.*; SCHWAB, R.L.; SEAVER, E.C.; University of Hawaii at Manoa; University of Hawaii at Manoa; University of Hawaii at Manoa: Expression of Hox and ParaHox genes during development of the polychaete annelid Capitella sp. I In recent years Hox genes have been isolated from most animal phyla. These genes are clustered in vertebrates and […]

WETHEY, D S; Univ. of South Carolina: Wave forces in the surf zone: implications for population dynamics and recruitment The striking spatial patterns of settlement of invertebrate larvae and distributions of adults on wave-exposed rocky shores are difficult to understand, when one considers the extreme hydrodynamic forces exerted on larvae and adults. In order to […]

WOLCOTT, T.G.*; KAMYKOWSKI, D.; JANOWITZ, G.S.; NC State Univ., Raleigh: Red Tides: what’s good behavior for a bad alga? How do mobile phytoplankton make �decisions� about the migrations that allow them to temporally stitch together spatially separated essential resources? We are exploring the rules that drive vertical migration of red-tide dinoflagellates (Karenia brevis) between well-lit […]

BOLLER, M.L.*; CARRINGTON, E.; Univ. of Rhode Island; Univ. of Rhode Island: In situ measurements of hydrodynamic force on a canopy-forming intertidal macroalga Hydrodynamic forces on intertidal macroalgae can be large due to the high water velocities that occur as waves break on the intertidal zone. This often results in the removal of an individual […]

VOGEL, S.; Duke Univ. : Drag reduction by aquaplaning in broad leaves during floods Leaves of an especially flood-tolerant, forest-floor plant, Hexastylis arifolia, were subjected to rapid water movement at shallow depths to approximate sheet flow conditions during flooding. When held by the basal ends of their petioles, 20 mm down, leaves surfaced, apparently through […]

O’DONNELL, Michael, J.; Hopkins Marine Station, Stanford University: Big Breaking Waves Bashing Small Sessile Stuff Hydrodynamic forces imposed by breaking waves are one of the most obvious stresses in the intertidal zone of wave-swept shores. Previous studies have indicated that surface topography can influence the distributions of organisms by providing protection from extreme hydrodynamic forces, […]

HELMUTH, B.; GILMAN, S.; WETHEY, D.S.; Univ. of South Carolina, Columbia; Univ. of South Carolina, Columbia; Univ. of South Carolina, Columbia: Predicting biogeographic responses to climate change in rocky intertidal ecosystems: a mechanistic approach Intertidal organisms are often assumed to live close to their thermal limits, and thus have emerged as potential early indicators of […]

TRACY, C. R.; CHRISTIAN, K. A.; TRACY, C. R.; Univ. of Nevada, Reno; Charles Darwin Univ., Northern Territory, Australia; Charles Darwin Univ., Northern Territory, Australia: Evaluating thermoregulation in large reptiles: null modeling Hertz et al. (1993) presented protocols for evaluating thermoregulation in reptiles. Their approach employs comparisons of thermoregulatory performance with null models of the […]