BECK, S.L.: Skeletal Variation By “Batch” Among CD-1 Mice Reveals Continuing Genetic Heterogeneity. The random-bred CD-1 mouse is widely favored as a test organism by regulatory agencies, pharmaceutical houses, among others, because of their broad array of genotypes, mimicing the human population. There is, therefore, concern about their continuous genetic heterogeneity. We purchased 7 groups […]

Sherman, R.L.*; Sulikowski, J.; R.E. Spieler: Similarities and differences in fine gill vasculature among batiod elasmobranchs Classic studies of gill vasculature indicate the gross anatomy of elasmobranch gills is similar in most species, and in general, resembles that of teleosts. Recent studies of fine gill structure of several species of batoid elasmobranchs (Order: Rajiformes), however, […]

O’BRYANT, E.L.*; WADE, J.: Sexual Dimorphisms in Neuromuscular Junction Morphology in the Green Anole Lizard The green anole lizard exhibits seasonal courtship behavior that is sexually dimorphic. It consists of the extension of a bright red throat fan, called a dewlap, along with head-bobs and a push-up display. While males extend the dewlap in aggressive […]

TOBALSKE, B.W.*; BIEWENER, A.A.; ZIMMERMAN, B.B.: Scaling of Takeoff Mechanics in Doves (Columbidae) Takeoff ability is considered to be of central importance to the ecology and evolution of animal flight, yet few studies have examined the magnitude and timing of ground reaction forces during takeoff in flying birds. Predictions of takeoff ability suggest that: 1) […]

HUMFELD, S.C.: Satellite male green treefrogs are competitively inferior Individuals of different competitive abilities or in certain environmental circumstances adopt different alternative mating tactics as a conditional strategy. Male green treefrogs (Hyla cinerea) primarily produce acoustic signals to attract females; however, satellite males do not produce advertisement calls and attempt to intercept and mate with […]

HANNAFORD, S.J.: Role of venation in the support and deformabilty of Dipteran wings during flight Wing deformations have been shown in virtually all flying animals thus far studied and are most pronounced during hovering, maneuvering, and slow flight. Despite the universality of deformations during flight, the possible functional significance of such deformations is a matter […]

GILCHRIST,S.L.: Resetting the system: Dynamics of hermit crab shell cycling after Hurricane Mitch An eight-year study at Bailey’s Cay has revealed a dynamic shell cycling system between hermit crabs on the coral reef, in backreef seagrass, and on land. Predators such as octopuses, crabs and fish consume both hermit crabs and gastropods on the reef. […]

KAVANAGH, K.D.*; MORGAN, B.A.: Regulating differentiation in vertebrates: Functional homology and evolutionary co-option in Ikaros family genes The Ikaros gene family of transcription factors is important in several vertebrate developmental pathways. Four paralogous genes in the family encode proteins that homo- and heterodimerize before binding to the DNA molecule, facilitating transcription of lineage-specific genes. In […]

Muller, U.K.*; Stamhuis, E.J.; Ellington, C.P.: Quantifying the leading-edge vortex of a hovering robotic insect during the downstroke A hovering hawkmoth Manduca sexta generates a stable leading-edge vortex during the downstroke. To study the flow in greater detail, a scaled-up robotic model that mimics the wing movements was built (the flapper). The flow around its […]

Park, D.S.*; Propper, C. R.: Purification and Action of a Repelling Pheromone from Male Red-spotted Newts Male red-spotted newts, Notopthalmus viridescens, interacting with females release repelling pheromones that function to repel conspecific males. It has suggested that the repelling pheromones may conserve both the courting and approaching (towards a courting group) males’ reproductive fitness by […]