RABATSKY, A. M.; University of Louisiana at Lafayette: Caudal luring and defensive tail display in the dusky pigmy rattlesnake, Sistrurus miliarius barbouri, with comments on ontogenies and evolution Snakes utilize their tails for many uses including foraging and defense. In this study, I investigated caudal luring and defensive tail display in the dusky pigmy rattlesnake, […]
sessions: Session 32
Wave forces in the surf zone implications for population dynamics and recruitment
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 […]
Red Tides what’s good behavior for a bad alga
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 […]
In situ measurements of hydrodynamic force on a canopy-forming intertidal macroalga
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 […]
Drag reduction by aquaplaning in broad leaves during floods
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 […]
Big Breaking Waves Bashing Small Sessile Stuff
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, […]
Temperature-dependent sex determination in a viviparous lizard what role do hormones play
ELF, P.K.*; ROBERT, K.; THOMPSON, M.; FIVIZZANI, A.; University of Minnesota Crookston; University of Sydney; University of Sydney; University of North Dakota: Temperature-dependent sex determination in a viviparous lizard: what role do hormones play? The Australian skink, Eulamprus tympanum, is a viviparous reptile that exhibits temperature-dependent sex determination (TSD). In this system the pregnant female […]
Predicting loggerhead sex ratios confounding effects of temperature variation and thermosensitive period
LEBLANC, A.M.**; ROSTAL, D.C.; WIBBELS, T.; Univ. of Alabama, Birmingham; Georgia Southern Univ.; Univ. of Alabama, Birmingham: Predicting loggerhead sex ratios: confounding effects of temperature variation and thermosensitive period Temperature-dependent sex determination was studied in loggerhead sea turtles (Caretta caretta) nesting on Wassaw (2000-2004) and Blackbeard Island (2001-2004) NWRs in Georgia. Sex ratios were estimated […]
Maternal, Sex and Incubation Temperature Effects on an Endangered Tortoise, Geochelone sulcata
LIGON, D.B.*; LOVERN, M.B.; Oklahoma State University; Oklahoma State University: Maternal, Sex and Incubation Temperature Effects on an Endangered Tortoise, Geochelone sulcata Embryonic and neonatal phenotypes are affected by a number of factors such as genotype, maternal investment and environmental conditions during development. Because of its role in determining sex in many turtle species, effects […]
Maternal brooding in the Children’s python (Antaresia childreni) promotes egg water balance
LOURDAIS, Olivier; DENARDO, Dale F.*; HOFFMAN, Ty C.M.; Arizona State Univeristy; Arizona State University; Arizona State University: Maternal brooding in the Children’s python (Antaresia childreni) promotes egg water balance Pythonine snakes show extended care of their clutches with maternal egg brooding. While brooding may provide the eggs thermal advantages via insulation and, in some species, […]