MCDONALD, B.I.; CROCKER, D.E.; Sonoma State University, California; Sonoma State University, California: Lactation efficiency in northern elephant seals The efficiency with which mothers convert acquired energy into milk is a key determinant of the magnitude of parental investment in mammals; however, the mechanisms underlying lactation efficiency are poorly understood. Previous investigations on northern elephant seals, […]

LYNCH, K.S.; RYAN, M.J.; WILCZYNSKI, W.; Univ. of Texas, Austin; Univ. of Texas, Austin; Univ. of Texas, Austin: Gonadal Steroids, Time Constraints and Mate Choice Plasticity Plasticity in mate choice may arise from time constraints imposed as time to release eggs approaches. We have previously reported that female tungara frogs (Physalaemus pustulosus) display flexibility in […]

IVES, T. T.*; SCHILLER, J. R.; University of Tennessee; Austin Peay State University: Effects of Tail Autotomy on Behavior and Pheromone Communication of the Five-Lined Skink, Eumeces fasciatus We tested the effect of tail autotomy on social status of the lizard Eumeces fasciatus (Five-Lined Skink). We recorded the duration of the contest, i. e. time […]

RENN, Suzy C.P.; HOFMANN, Hans A.; Bauer Center for Genomics Research, Harvard University; Bauer Center for Genomics Research, Harvard University: A Genomic Study of the Mechanisms of Sex-Role Behavior Our understanding of the molecular basis of sex-role behavior is limited. While the males of most animal species compete more intensely for mates than females, there […]

DIEUDONNE, A.; SANE, S.P.; Univ. Of Washington, Seattle; Univ. Of Washington, Seattle: The encoding properties of antennal mechanosensors in the hawk moth, Manduca sexta During locomotion, insects rely on their antennae for a wide variety of sensory stimuli. In addition to being the primary olfactory organs, the antennae also serve a very important mechanosensory role […]

KOEHL, M. A. R.; KOSEFF, J. R.; CRIMALDI, J. P.; WILEY, M. B.; Univ. of California, Berkeley; Stanford Univ.; Univ. of Colorado; City College of New York: Hydrodynamics of Sniffing by Lobsters Many animals use chemical cues in the water or air around them to detect mates, competitors, food, predators, and suitable habitats. The first […]

DEAN, M.N.*; HUBER, D.R.; NANCE, H.; U. Calif. Irvine; U. S. Florida; U. N. Carolina Chapel Hill: Functional morphology of jaw trabeculation in Narcine brasiliensis Design of minimum-weight structures that retain their integrity under dynamic loading regimes has long challenged engineers and functional morphologists. A solution to this problem found in both human and biological […]

LIAO, James, C.; Harvard University: Function of the lateral line in trout exposed to environmental vortices; the effect of a pharmacological block of the sensory neuromasts The dynamic and transparent nature of flowing water poses a distinct challenge to swimming fishes. Previous work has shown that rainbow trout need only recruit their anterior, axial red […]

CUNNINGHAM, G.B.; VAN BUSKIRK, R.W.; BONADONNA, F.; WEIMERSKIRCH, H.; NEVITT, G.A.; Univ. of California, Davis; Univ. of California, Davis; CNRS, France; CNRS, France; Univ. of California, Davis: Field studies of the olfactory sensitivities of three species of Procellariiform chicks. Antarctic procellariiform seabirds are attracted to food-related odors at sea, but little is known about how […]

MEAD, K. S.; BRUESTLE, A. E.; Denison University: Do Crayfish From Different Flow Environments Have Different Arrangements Of Chemosensors On Their Antennules? Many aquatic crustaceans use water-borne chemical cues in ecologically critical activities such as finding food, mates, suitable habitat, detecting predators, and communicating with conspecifics. These chemical cues are often present as odor plumes, […]