HOLFORD, K.C.*; BORST, D.W.: Phosphorylation regulates farnesoic acid O-methyl transferase activity in the mandibular organ of the lobster, Homarus americanus. Synthesis of methyl farnesoate (MF) by the lobster mandibular organ (MO) is regulated by a neuroendocrine peptide (MO-inhibiting hormone; MOIH) secreted by the sinus gland (SG), a neurosecretory organ in the eyestalk. MOIH regulates MF […]

NICHOLSON, GS; RODGERS, BD; KELLEY, KM: Peripheral Glucoregulation in the Longjaw Mudsucker: Insulin Regulation of Muscle Glucose Transport Teleost fishes have often been referred to as “glucose intolerant”; and at one point doubt was cast on whether they possessed an insulin-stimulated glucose transport system in peripheral tissues (e.g., in muscle) comparable to that of mammalian […]

MCCORMICK, S.D.; BJ�RNSSON, B.T.; MOECKEL, A.M.; LERNER, D.T.; O’DEA, M.F.: Endocrine pathways for the disruption of the parr-smolt transformation by estradiol and nonylphenol. Sex steroids are known to interfere with normal development of the parr-smolt transformation, and environmental estrogens such as nonylphenol have recently been implicated in reduced returns of Atlantic salmon in the wild. […]

FENTRESS, J. F.; BART, H. L., Jr.; CHEEK, A. O.: Endocrine effects of paper mill effluent in longear sunfish Endocrine disrupting compounds are exogenous agents that interfere with the normal functioning of the endocrine system. Paper mill effluent is believed to contain endocrine disrupting compounds that affect sex steroid and protein levels, as well as […]

REED, W.R.; CLARK, M.E.; BENOY, G.; North Dakota State University; North Dakota State University; University of Calgary: Parental and environmental factors generating variation in growth rates in free-living birds Variation in growth rates during the juvenile period can have a large influence on variation in adult morphological, behavioral and life-history characteristics. In birds, the mechanisms […]

ANGIELCZYK, K.D.*; ROOPNARINE, P.D.; California Academy of Sciences; California Academy of Sciences: Morphological integration and modularity in the plastron of Emys marmorata (Testudines, Emydidae) Several recent studies have used geometric morphometrics to examine morphological integration and modularity, but in most cases the methods used required the potentially interacting modules to be defined a priori. Here […]

NASSAR, P.N.*; JENKINS, F.A., Jr.; Univ. of Pennsylvania; Harvard Univ.: Kinematic analysis of the thoracic cage in guinea fowl (Numida meleagris) during terrestrial locomotion Running guinea fowl (Numida meleagris) entrain their ventilation with their stride using a variety of breaths : stride ratios. The kinematics of the thoracoabdominal skeleton during locomotion are still mostly unknown, […]

KELLY, S.A.*; GARLAND, T., Jr.; Univ. of Calif., Riverside: Experimental Evolution and Phenotypic Plasticity of Hindlimb Bones in High-Activity House Mice A primary factor in the acquisition and maintenance of vertebrate skeletal mass and strength is mechanical loading. Studies of rodents have generally found that both forced and voluntary chronic exercise causes increased hindlimb bone […]

CURTIN, A.J.; ZUG, G.R.; AVERY, H.W.; SPOTILA, J.R.; Drexel University; Natl Museum Natural History, Smithsonian Institution; Drexel University; Drexel University: Bone Growth Patterns as Indicators of Life History Parameters in Desert Tortoise (Gopherus agassizii) Populations Ecological constraints influence bone growth strategies, and thus life history strategies, in a wide variety of amphibians and reptiles, however […]

DITTMORE, A.*; STRATTON, T.; KELLY, T.; SCHRODER, K.; GEISLER, B.; AUTUMN, K.; Lewis & Clark College: Why geckos don’t fall off ceilings Directional arrays of branched microscopic setae constitute a dry adhesive on the toes of pad-bearing geckos. Geckos are able to easily and rapidly detach their sticky toes as they run on smooth vertical […]