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  • Buccal oscillations  (1)
  • Conflicting demands  (1)
  • D-2 agonist  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Studies on ventilation of Caiman crocodilus (crocodilia: Reptilia)
    Amsterdam : Elsevier
    Respiration Physiology 26 (1976), S. 285-301 
    Details
    ISSN: 0034-5687
    Keywords: Breathing pattern ; Buccal oscillations ; Electromyography ; Mechanics of breathing ; Olfaction ; Rib movements ; Ventilation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0034-5687(76)90001-3
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Pharmacodynamic profile of CQP 201-403, a novel 8α-amino-ergoline (1988)
    Springer
    Cellular and molecular life sciences 44 (1988), S. 431-436 
    Details
    ISSN: 1420-9071
    Keywords: CQP 201-403 ; 8α-amino-ergolines ; ergot pharmacology ; D-2 agonist ; endocrine ; CNS ; cardiovascular actions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The profile of action in animals of CQP 201-403, a novel 8α-amino-ergoline, is in most aspects that of a very potent dopaminomimetic, both as a prolactin secretion inhibitor, and at the levels of the CNS and the cardiovascular system. Qualitatively CQP 201-403 differs slightly from bromocriptine and apomorphine in its effects on the CNS (no influence on serotonin metabolism in the rat cortex; induction of masculine mounting behavior in rats) and the cardiovascular system of the dog (reflex tachycardia in response to a blood-pressure fall). In man the new compound proved to be highly active in lowering prolactin serum levels and to be more potent than bromocriptine (Parlodel®).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01940539
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Feeding postures of suspension-feeding larval black flies: the conflicting demands of drag and food acquisition (1991)
    Springer
    Oecologia 85 (1991), S. 457-463 
    Details
    ISSN: 1432-1939
    Keywords: Suspension-feeding ; Boundary layers ; Drag ; Conflicting demands ; Larval black flies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We tested whether larval black flies actively control the positioning of their feeding appendages (labral fans), and if so, whether their posture represents a balance between the conflicting demands of drag and feeding. We compared the postures of live larvae with the postures of larvae killed by heat-shock in three different flow regimes in a laboratory experiment; we assumed that the postures of heat-killed larvae approximated a passive response to drag. The average height of the labral fans above the bed declined significantly in faster flows, and was significantly greater in live than dead larvae. There was also a significant interaction effect, since the difference between the fan heights of live and dead larvae was greater in slower flows. Two mechanisms may contribute to this result. Larvae in slower flows have to increase their fan heights more than larvae living in faster flows to achieve comparable increases in velocity and thus particle flux. In addition, muscular strength may limit the feeding postures larvae can assume. The fan heights of live larvae also varied depending on the concentration of food particles: larvae exposed to low food concentrations held their fans higher above the bed than did larvae exposed to high food concentrations in the same flow regime. This change in posture is due neither to an uneven particle concentration in the boundary layer nor to added drag from particles trapped in the labral fans. Collectively, our results indicate that these suspension feeders actively control their feeding posture, and suggest that these varying postures represent a dynamic balance between the conflicting needs of minimizing drag and maximizing feeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00323756
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    Paper (German National Licenses)
    Fulltext
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