SANDERS, , M.B.*; BILLINGHURST, , Z.; DEPLEDGE, , M.H.; CLARE, , A.S; University of Plymouth, U.K.; Plymouth Environmental Research Centre, U.K.; Plymouth Environmental Research Centre, U.K; University of Newcastle, Newcastle-upon-Tyne, U.K.: Vitellin-like proteins in larval Crustacea: potential biomarkers of xeno-oestrogen exposure While the ability of xeno-oestrogens, like 4-n-nonylphenol (4-NP), to disrupt the natural hormonal systems […]

ARIZONO, Koji; TAKAHASHI, Tohru; AYAKI, Toshikazu; Prefectural University of Kumamoto; Kumamoto Health Science University ; Nagasaki Prefectural University: The occurrence of intersex in Japanese freshwater crab Tributylin (TBT)-induced imposex phenomena have been reported only in mollusks. Our findings reveal that imposex is not a phenomenon exclusive to mollusks. The imposex phenomenon has been found to […]

MCKENNEY, JR., C.L.; USEPA, NHEERL, Gulf Ecology Division: The influence of insect juvenile hormone agonists on metamorphosis and reproduction in estuarine crustaceans Comparative developmental and reproductive studies were performed on several species of estuarine crustaceans in response to three juvenile hormone agonists (JHAs). Larval development of the grass shrimp, Palaemonetes pugio, was greater than two […]

CHANG, E.S.; Univ. of Caliifornia, Bodega Marine Lab., Bodega Bay: The Hormones Regulating Crustacean Growth, Metabolism, and Reproduction: Multiple Targets for Endocrine Disruption Crustaceans are ideal model organisms for the study of endocrine disruption and stress physiology in aquatic invertebrates. This is due to their ecological and economic importance and to the relatively extensive amount […]

LEBLANC, G.A.; STERNBERG, R.; GOODING, M.P.; GUAL, G.J.; North Carolina State Univ.: Testosterone-Fatty Acid Esterification: A Unique Target for the Endocrine Toxicity of Tributyltin to Gastropods Contamination of the marine environment with tributyltin (TBT) has caused a global occurrence of endocrine toxicity – imposex – whereby female gastropods express male sex traits. Imposex has been […]

WILSON, T.G.; ASHOK, M.; PURSLEY, S.; Ohio State University, Columbus OH; Colorado State University, Fort Collins: Response of Drosophila melanogaster to insect growth regulator insecticides Although Drosophila melanogaster is not a pest insect, studies of field populations demonstrate that this insect responds to insecticide usage by evolving resistance. We have studied resistance to the insect […]

RAIMONDO, Sandy; MCKENNEY, JR., Charles L.; US Environmental Protection Agency; US Environmental Protection Agency: Population-level response of the mysid, Americamysis bahia, to varying thiobencarb concentrations based on age-structured population models To fully understand the potential long-term ecological impacts a pollutant has on a species, population-level effects must be estimated. Since long-term field experiments are typically […]

MUELLER, C.T.*; PRIESNITZ, F.M.; BECKMANN, M.; Cardiff University, Cardiff, UK; Carl-v.-Ossietzky Univ, Oldenburg, Germany; Univ. of Wales, Aberystwyth, UK: Pheromonal communication in Nereids and the likely intervention by petroleum derived pollutants Nereis succinea and Platynereis dumerilii (Annelida, Polychaeta) are broadcast spawners and reproduce semelparously. The co-ordination of the final events in reproduction, swarming and spawning, […]

FOX, Jennifer, E.; MCLACHLAN, John, A.; Univeristy of Oregon; Tulane University: Non-traditional target of endocrine disrupting chemicals: the roots of hormone signaling Communication on a cellular level, defined by chemical signaling, sensing, and response, is an essential and universal component of all living organisms and the framework that unites all ecosystems. Evolutionarily conserved signaling �webs�, […]

DEFUR, Peter L.; Virginia Commonwealth Univ.: Importance of Invertebrate Models for EDC’s in the Field The topic of endocrine disrupting chemicals (EDC) has become a central topic in research and for environmental programs around the world during the last decade. Most of the work on EDC�s has been devoted to vertebrates, partly from concern over […]