MOORE, Ignacio T.; WINGFIELD, John C.; Univ. of Washington; Univ. of Washington: Reproductive cycles in equatorial populations of rufous-collared sparrows, Zonotrichia capensis Seasonally breeding birds in northern latitudes are typically photoperiodic and use changes in daylength to time reproduction. The neuroendocrine system mediates seasonal reproduction associated with photoperiodism. In response to increasing daylength, birds become […]

KHAN, H.; ALKINDI, A.Y.A.; SALEUDDIN, A.S.M.; Canad. Mem. Chiropractic Coll., Toronto, Canada; Sultan Qaboos Univ., Al-Khod, Oman; York Univ., Toronto, Canada: Neurosecretory (NS) cells of the reproductive centers in the central nervous system (CNS) of Helisoma (Mollusca: Pulmonata): Immunocytochemical and physiological studies using Aplysia (Mollusca: Opisthobranchia) egg-laying hormone (ELH). The CNS of Helisoma consists of […]

PARTRIDGE, C.*; SHARDO, J.; BOETTCHER, A.; University of South Alabama, Mobile; Middle Tennessee State University, Murfreesboro; University of South Alabama, Mobile: Morphology and Reproductive Physiology of Syngnathus scovelli Brood Pouch Syngnathids exhibit reversal of sex roles during mating and brooding. Females insert eggs into brood pouches of males, where they are incubated until the end […]

SULIKOWSKI, J.A.; TSANG, P.C. ; HOWELL, W.H. ; University of New Hampshire; University of New Hampshire; University of New Hampshire: Morphological, Histological and Steroidal Examination of the Reproductive Cycle in the Winter Skate, Leucoraja ocellata Elasmobranch fish display a wide range of diverse and complex reproductive modes. These strategies include such attributes as internal fertilization, […]

KOHLI, G; CLELLAND, E; DIMUCCIO, T; PENG, C; York Univerity; York University; York University; York University: Transforming growth factor-�1 in zebrafish ovary: cDNA cloning, mRNA expression and role in oocyte maturation Transforming growth factor-� (TGF-�) is a multifunctional factor involved in regulating a variety of cellular activities. In mammals, TGF-� in known to regulate reproduction, […]

SAGI, A.*; KHALAILA, I.; AFLALO, E.; PETER-KATALINIC, J.; ABDU, U.; DAVIS, C.; Ben Gurion University, Beer Sheva, Israel; University of Muenster, Germany; Ben Gurion University, Beer Sheva, Israel; University of Muenster, Germany; Princeton University; Ben Gurion University, Beer Sheva, Israel: The vitellogenin gene in the crayfish Cherax quadricarinatus: expression and encoded proteins A vitellogenin complete […]

POWELL, M. L.; SOWER, S. A.; Univ. of New Hampshire, Durham: The Identification of Corpus Luteum and Determination of Reproductive Steroids in the Gonad of the Atlantic Hagfish, Myxine glutinosa Hagfish are considered the earliest extant vertebrates. Despite their evolutionary importance little is known about their life history or reproduction. To better understand reproduction in […]

WOOD, AW*; MATSUMOTO, JA; VAN DER KRAAK, G; University of Guelph; University of Guelph; University of Guelph: Identification of an oocyte cysteine protease inhibitor cDNA in rainbow trout: differential expression during follicular development and atresia Oocyte atresia in mammals is characterized by widespread apoptosis in the granulosa cells of the follicle. In contrast to the […]

MUKAI, S.T.*; HOQUE, M.T.; MORISHITA, F.; SALEUDDIN, A.S.M.; York Univ., Toronto; York Univ., Toronto; Hiroshima Univ., Japan; York Univ., Toronto: Characterization of an important glycoprotein in female reproduction from the freshwater snail (Helisoma duryi) The albumen gland of pulmonate molluscs is a female accessory sex gland that synthesizes and secretes a complex mixture of polysaccharides […]

WOODHEAD, A.P.; THOMPSON, M.E.; HASS, J.K.; STAY, B.; University of Iowa; University of Iowa; University of Iowa; University of Iowa: Allatostatin in ovaries of the cockroach Diploptera punctata Allatostatins (ASTs), a family of peptides of widespread occurrence in invertebrates, were first isolated from brains of D. punctata as an inhibitor of juvenile hormone production by […]