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 […]

CHRISTENSEN, D.E. *; VLECK, C.M.; Iowa State Univ., Ames: Lactotroph Distribution and Response to VIP Stimulation Across the Breeding Cycle in the Zebra Finch In arid regions of Australia, Zebra Finches are opportunistic breeders whose breeding cycles are coupled to nonseasonal rainfall rather than photoperiod, requiring them to be reproductively competent on short notice. We […]

PEREYRA, M.E.*; SHARBAUGH, S.M.; HAHN, T.P.; U.C. Davis; U. of AK, Fairbanks; U.C. Davis: Interspecific variation in photo-induced hypothalamic GnRH plasticity in cardueline finches In this study, we present data on photo-induced changes in hypothalamic GnRH immunoreactivity associated with the development of refractoriness in males of 3 closely related species of cardueline finch: common redpoll, […]

SCHOECH, S. J.*; BOWMAN, R.; REYNOLDS, S. J.; U. of Memphis, TN; Archbold Biol. Stn., Venus, FL; U. of Birmingham, Edgbaston, UK: Interactions Between Nutrition, Corticosterone, and Reproduction in Florida Scrub-Jays In variable environments animals often exhibit interyear variation in the timing of breeding. Study of two populations of Florida Scrub-Jays (Aphelocoma coerulescens) in the […]

MENDON�A, M.T.; Auburn University: Flutamide and fadrazole are ineffective in blocking the expression of male mating behavior in big brown bats. Male big brown bats mate in late fall and upon arousal from hibernation conditions throughout the winter, a time when testes are regressed and plasma testosterone levels are relatively low. Over the last several […]

PERFITO, N.*; ZANN, R.A.; BENTLEY, G.E.; HAU, M.; Princeton Univ., New Jersey; LaTrobe Univ., Victoria, Australia; Univ. of Washington, Seattle; Princeton Univ., New Jersey: Endocrine mechanisms mediating reproduction in an unpredictable environment Opportunistically breeding species respond to short-term, local cues in their environment to time reproduction appropriately. However, the neuroendocrine and endocrine control of this […]

REEDER, D.M.*; KUNZ, T.H.; WIDMAIER, E.P.; Boston Univ., MA; Boston Univ., MA; Boston Univ., MA: Behavioral and physiological responses to group formation in the Malayan Flying Fox (Pteropus vampyrus) vary by sex and group type. We examined the response to formation of same sex groups (SSGs) and breeding groups (BGs) in captive Malayan Flying Foxes […]

MATUS, D.Q.; LEE, P.N.; BROWNE, W.E.; MARTINDALE, M.Q.; University of Hawaii / Kewalo Marine Laboratory; University of Hawaii / Kewalo Marine Laboratory; University of Hawaii / Kewalo Marine Laboratory; University of Hawaii / Kewalo Marine Laboratory: The role of COE genes in the evolution of the metazoan nervous system We are interested in the evolution […]

PEEL, A.D.; AKAM, M.E.; University of Cambridge, U.K.; University of Cambridge, U.K.: The evolution of insect engrailed genes, and its implications for our understanding of gene family evolution. A number of insect orders, including Diptera, Lepidoptera & Blattodea, have been shown to contain species that possess two engrailed genes. Conspecific engrailed genes typically group together […]

PANFILIO, K.A.; LIU, P.Z.; KAUFMAN, T.C.; University of Cambridge, UK; Indiana University, Bloomington; Indiana University, Bloomington: Knock-down of Hox3/zerkn�llt in a representative insect results in complete eversion of the embryo: Evolution of embryogenesis and of gene function The Hox3 locus in insects has diverged significantly from the canonical role of Hox genes in segmental specification […]