GOLEMAN, W.L.*; CARR, J.A.; URQUIDI, L.J.; ANDERSON, T.A.; THEODORAKIS, C; SMITH, P: Response of Larval Amphibians to Perchlorate Contaminated Pond Water Perchlorate occurs in ground and surface waters as a result of ammonium perchlorate (AP) discharge from rocket fuel. Perchlorate also has been used to experimentally manipulate amphibian metamorphosis, although usually at concentrations much greater […]

DZIALOWSKI, E.M.; DECKER, S.; BLACK, J; BURGGREN, W.W.; TONHARDT, H.: Respiratory development of domestic chicken embyros in response to chronic hypoxia during the middle portion of incubation Previous experiments in our laboratory have revealed that developing chicken embryos are most sensitive to chronic mild hypoxia (15% O2; PO2 ~ 110 mmHg) during the middle third […]

WOODLEY , R.; BUFFENSTEIN, R.*: Reproductive function of naked mole-rats is extremely sensitive to ambient temperature. Naked mole-rats (Heterocephalus glaber), are thermoconforming mammals. Effects of a 5°C decline in ambient temperature (Ta) on gestation, fecundity and maternal body composition and temperature (Tb) were assessed by comparing animals housed at 25°C (CA) and simulated burrow conditions […]

PEREYRA, M. E.*; MACDOUGALL-SHACKLETON, S. A.; SHARBAUGH, S. M.; MORTON, M. L.; KATTI, M.; HAHN, T. P.: Relationships between photorefractoriness and reproductive flexibility in cardueline finches. Photorefractoriness constrains breeding seasons of many birds at mid and high latitudes, and therefore is an important determinant of temporal reproductive flexibility. We used photoperiod manipulations and measured gonadal […]

ROMERO, L.M.*; RICH, E.L.; TRAN, K.D.; NEPHEW, B.C.: Regulation of Corticosterone Release in Captive House Sparrows Earlier studies indicate that captive house sparrows (Passer domesticus) show both a daily rhythm in corticosterone release as well as a decrease in their corticosterone response to stress during their prebasic molt. We tested whether the capacity of the […]

LEE, K*; POWELL, M; REED, K; SUZUKI, K; TAKAHASHI, A; MORIYAMA, S: Progress in cloning of a cDNA encoding gonadotropin from the sea lamprey P. marinus. Lampreys are one of two extant representatives of Agnatha (jawless fish), the oldest class of vertebrates. Two forms of gonadotropin releasing hormone (GnRH) have been identified from the hypothalamus […]

DRENNAN, R.W.; MCCLARY, JR., M.: Predation does not control the distribution of barnacles in the tidal Hackensack River. There are sites in the tidal Hackensack River of New Jersey where the barnacle, Balanus improvisus, lives and where they once lived. Previous investigation showed that when five out of ten rocks from the site where the […]

BEVELANDER, G.S.; SMITH, T.L.; KARDONG, K.V.; POVEL, G.D.E.: Poststrike chemosensory trailing in dusky pigmy rattlesnakes (Sistrurus miliaris barbouri) Rattlesnakes generally strike and immediately release envenomated rodent prey and then begin a series of precise poststrike behaviors that allow the recovery of the rodent. However it is less well known if they will follow the odor […]

KRECH, J.P.*; VANDERGON, T.L.: Photolyase mRNA levels measured by RT-PCR vary significantly among individual eggs and during embryonic stages of development in the Pacific treefrog, Hyla regilla Recent worldwide declines in amphibian populations have led researchers to explore hypotheses that might explain this phenomenon. One hypothesis suggests that rising levels of ultraviolet (UV) radiation may […]

MCCAULEY, D.W.*; BRONNER-FRASER, M.: Pax Gene Expression in Ectodermal Placodes of the Lamprey Ectodermal placodes contribute to the cranial ganglia and sense organs of the head and, together with neural crest cells, represent defining features of the vertebrate embryo. The identity of different placodes appears to be specified in part by the expression of different […]