MURDOCK, C*; WIBBELS, T: Steroidogenic factor-1 mRNA levels in the embryonic adrenal/kidney/gonadal complexes of Trachemys scripta The red eared slider turtle, Trachemys scripta, has been the focus of many temperature-dependent sex determination (TSD) studies in the past. Many of these previous studies have suggested that endogenous estrogen production during development is a key event in […]

ROYER, T; MAURES, T; DUAN, C: Spatial and temporal expression profiles of IGF ligands, receptors, and binding proteins in developing zebrafish embryos To better understand how various components of the insulin-like growth factor (IGF) signaling system regulate embryonic tissue formation and growth in a teleost model organism, the zebrafish, we mapped the spatio-temporal expression patterns […]

RAJAKARUNA, R.S.*; BROWN, J.A.: Significance of chemosensory cues learned during ontogeny in Atlantic salmon and brook trout Imprinting or early learning of natal breeding sites can be best understood when we consider the life history of salmonids. Juveniles learn odours associated with their home stream before seaward migration and use these odour memories for homing. […]

LYNN, S.E.*; BREUNER, C.W.; WINGFIELD, J.C.: Short-term fasting in a songbird leads to elevated free corticosterone levels due to decreased corticosterone binding globulin Studies have shown that unpredictable events such as severe storms lead to an increase in circulating corticosterone (CORT) in breeding birds. This increase in CORT is often accompanied by an increase in […]

KAVANAUGH, S.I.*; POWELL, M.L.; DAVIS, J.E.; SOWER, S.A.: Sexuality and Embryogenesis of the Atlantic Hagfish, Myxine glutinosa The objectives of these experiments were to determine gonadal development under controlled laboratory conditions and to stimulate gonadal development through injection of lamprey GnRH-III to potentially obtain fertilized eggs. Atlantic hagfish, Myxine glutinosa were obtained from the Gulf […]

MOORE, Ignacio T.; BELDEN, Lisa K.; PERFITO, Nicole; LERNER, Darren; WADA, Haruka; WINGFIELD, John C.: Seasonality in an equatorial population of rufous-collared sparrows Most northern latitude bird species display seasonal reproduction, territoriality and molt. Typically, males aggressively guard territories and mate during the spring and early summer and subsequently go through prebasic molt (replacement of […]

PINKARD, Deanna R; SHENKER, Jonathon M: Seasonal variation in density, size, and habitat distribution of juvenile yellowtail snapper (Ocyurus chrysurus) in relation to spawning patterns in the Florida Keys The yellowtail snapper (Ocyurus chrysurus; Lutjanidae) supports an economically important commercial fishery in Florida and the Caribbean. Despite it’s commercial and recreational value, little is known […]

CARCIA, Rocco V.; JOHN-ALDER, Henry B.: Season-Specific Alterations in Adrenocortical Cell Function of the Eastern Fence Lizard (Sceloporus undulatus) We previously reported that S. undulatus adrenocortical cells are well suited to investigate adrenal steroidogenic function at the cellular level. We conducted the present study to determine whether seasonal changes in circulating corticosterone could, in part, […]

RHODES*, S.; GILCHRIST, S.L.; HENDERSON, M.: Role of Algal Refugia in Hermit Crab Populations of Bailey’s Cay Reef, Roatan, Honduras Hermit crabs are found commonly in the reef, backreef, and seagrass areas of Bailey’s Cay. In the backreef, patches of sand have stands of algae available to hermit crabs as refugia. Preliminary studies revealed that […]

FOUST, S.J.; THOMPSON, S.A.; GRISWOLD, S.L.; GURROLA, E.C.; KATS, L.B.: Response of leaf-cutting ants to predator chemical cues. Prey responses to predator odors have been studied in a variety of organisms, but little is known about the response of social insects to predator odors. This study examined the response of the tropical leaf-cutting ant, Atta […]