MCBRATNEY, Brandeis M. ; MORRISS-KAY, Gillian M.; Harvard University, Cambridge, MA; University of Oxford, Oxford, UK: Neural Crest and Mesoderm Contributions to the Mammalian Cranial Base The cranial base is the oldest part of the vertebrate skull, thus understanding variations in tissue origins among vertebrate basicrania may clarify the developmental basis of variations in craniofacial […]

DRAKE, Abby G; University of Massachusetts Amherst: Heterochronic Evolution in the Skull Morphology of Canids Landmark-based three-dimensional morphometrics are utilized to investigate heterochronic mechanisms within the skull morphology of the genus Canis. Following the strict definitions of Gould (1977) and Alberch, et al. (1979), perturbations in three developmental parameters, growth (size), development (shape), and age […]

THOMAS, K.R.; University of Chicago: Evolutionary conservation and modularity in the cranial ossification sequences of ostariophysan fishes This study documents the ossification sequence of skull bones in two ostariophysan species and attempts to address two questions: 1) How conserved are cranial ossification sequences among ostariophysan fishes? and 2) Is there evidence for modularity in the […]

ANDERSON, M. J.; WILLIAMS, E. E.*; Salisbury University; Salisbury University: The fatty acid composition of gill phospholipids from the blue crab (Callinectes sapidus) changes during the molt cycle The body and appendages of crustaceans are covered by an exoskeleton called the cuticle and its underlying hypodermis. In most species the cuticle is made rigid by […]

KENAGY, G.J.; University of Washington: Physiology, Adaptation, and Biogeography: New Echos from George Bartholomew’s Philosophy Nearly 50 years have passed since George Bartholomew produced an essay for a A.A.A.S. zoogeography symposium in which he discussed the role of physiology in the distribution of terrestrial vertebrates. Our views and technical abilities in the study of adaptation […]

LILLYWHITE, H.B.; ZAIDAN III, F.; University of Florida, Gainesville; University of Florida, Gainesville: Mutualism Between Birds and Snakes at Seahorse Key, Florida Seahorse Key is a 67 ha island protected in the Cedar Keys National Wildlife Refuge as an important rookery for thousands of wading birds that nest there. Cottonmouth snakes (Agkistrodon piscivorus conanti) inhabit […]

WOLCOTT, T.G.*; WOLCOTT, D.L.; HINES, A.H.; NC State Univ., Raleigh; NC State Univ., Raleigh; Smithsonian Env. Res. Ctr., Edgewater MD: Exploring migration of female blue crabs to spawning grounds, using biotelemetry and CTD dataloggers. After mating, female blue crabs (Callinectes sapidus) must migrate seaward (up to 200 km in Chesapeake Bay) to begin brood production. […]

BLOCH QAZI, M.C.*; WOLFNER, M.F.; Gustavus Adolphus College, St. Peter, MN; Cornell University, Ithaca, NY: Egg-independent sperm release in female Drosophila melanogaster In many species female sperm storage is an essential component of female fertility. One possible reason for this is that female sperm storage may help coordinate the relative availability of gametes thereby increasing […]

SHECHTER , A*; AFLALO , D.E; DAVIS , C; WEIL , S; SAGI , A; Ben-Gurion University ; Ben-Gurion University ; Ben-Gurion University ; Ben-Gurion University ; Ben-Gurion University : The expression and regulation of the vitellogenin gene in male Cherax quadricarinatus In female decapod crustaceans, vitellogenin (Vg) synthesis is a process related to reproduction […]

LI, Weiming; CHUNG-DAVIDSON, Yuwen; SIEFKES, Michael J.; WU, Hong; REES, Chris B.; Michigan State University; Michigan State University; Michigan State University; Michigan State University; Michigan State University: Pheromone Regulation of Reproductive Neuroendocrine in the Sea Lamprey The sea lamprey (Petromyzon marinus) is a jawless fish that relies on chemical communication to mediate many functions throughout […]