. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Ycur-Round Research K49. Laboratory of Roger Hanlon This laboratory investigates the behavior and neurobiology of cephalopods. Sludies of various learning capabilities are currently being conducted, as are studies on reproductive strategies that include agonistic behavior, female mate choice, and sperm competition. The latter studies involve DNA fingerprinting to determine paternity and help assess alternative mating tactics. Currently we are studying sensory mechanisms and functions of polarization vision in cephalopods. Co
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Ycur-Round Research K49. Laboratory of Roger Hanlon This laboratory investigates the behavior and neurobiology of cephalopods. Sludies of various learning capabilities are currently being conducted, as are studies on reproductive strategies that include agonistic behavior, female mate choice, and sperm competition. The latter studies involve DNA fingerprinting to determine paternity and help assess alternative mating tactics. Currently we are studying sensory mechanisms and functions of polarization vision in cephalopods. Complementary field studies are conducted locally and on coral reefs. The functional morphology and neurobiology of the chromatophore system of cephalopods are also studied on a variety of cephalopod species, and image analysis techniques are being developed to study crypsis and the mechanisms that enable cryptic body patterns to be neurally regulated by visual input. laboratory has been investigating the biosynthesis of this amino acid in Conns and the structural role of y-carboxyglutamic acid in the conopeptides. This satellite laboratory relates closely to the main laboratory on the Harvard Medical School campus in Boston; the main focus of the primary laboratory is the synthesis and function of y-carboxyglutamic acid in blood clotting proteins and the role of vitamin K. Cone snails from Fiji have been obtained and are being maintained in the Marine Resources Center. The marine cone snail is the sole invertebrate known to synthesize y-carboxyglutamic acid (Gla). The venomous cone snail produces neurotoxic conopeptides, some rich in Gla, which it injects into its prey. To examine the biosynthetic pathway for Gla. we have studied the Conus carboxylase which converts glutamic acid to y-carboxyglutamic acid. Of the Conns species tested, C. bandanus, C. tnunnoreits. C. textile, and C. ieopardus had high specific y-carboxylase activity. This activity has an absolute requirement for
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
