WILDEY, H.C.*; SHUSTER, S.M.: Measures of Sexual Selection in a Northern Gulf of California Mud Shrimp (Decapoda: Thalassinidea) Thalassinidean shrimp (Decapoda: Crustacea) are abundant infaunal organisms in mud flat and estuarine habitats. Very little is known about mating behavior or reproduction in mud shrimp, however, they are know to exhibit sexual dimorphism, with males possesing […]

REITZEL, A.M.*; HEYLAND, A.: Maternal investment and morphological plasticity: Insights from subtropical echinoids Animals face a heterogeneous environment with respect to food. When feeding in an unpredictable environment, some animals are able to modify ingestive and digestive morphology and/or physiology in order to increase nutrient acquisition. Previous research has shown planktotrophic (i.e. feeding) echinoid larvae […]

CATTON, C. A.: Life history stages of Eusyllis habei Imajima, 1966 with notes on epitoky in the family Syllidae (Annelida: Polychaeta) The life cycle of most polychaetes in the family Syllidae includes a brief pelagic larval stage followed by a benthic atokous (nonreproductive) stage. As adults, most species produce swimming reproductive individuals by either asexually […]

NAIDITCH, Sarah, E.; NEUFFER, Jacquelyn, M.; WOODWARD, Denise; HARRIS COTNER, Sehoya, C.: Interspecific Aggression in Fiddler Crabs, Genus Uca: Part 2: Fight Elements Male fiddler crabs (genus Uca) are known for their single, large cheliped. This large claw is believed to be beneficial for a male during courtship and fighting. Several attempts have been made […]

SMITH, T.L.; KARDONG, K.V.; BEVELANDER, G.S.; POVEL, G.D.E: Influence of prey odor concentration on the poststrike trailing behavior of the northern Pacific rattlesnake Rattlesnakes strike and immediately release envenomated rodent prey and then begin a series of precise poststrike trailing behaviors, based primarily upon chemosensory cues, that allow the recovery of the prey. Following a […]

AHRENS, K.*; SCHLOSSER, G.: Induction of Placodes at Experimentally Created Neural Plate Boundaries It has long been controversial, whether different types of vertebrate ectodermal placodes (e.g., adenohypophyseal, olfactory, profundal/trigeminal, epibranchial, dorsolateral placodes) originate from a common primordium or are separately induced at various locations in the embryo. However, recent data on the expression of Six1 […]

OVERSTREET, S.L.*; MAYER, L.M.; DYER, C.A.; PARLOW, A.F.; PROPPER, C.R.: Immunoreactive steroidogenic factor-1 levels in the ovary and pituitary do not change during puberty. Steroidogenic factor-1 (SF-1) was originally characterized as a transcription factor that regulates tissue specific cytochrome P450 steroid hydroxylase expression. Further investigation of SF-1 lead to the discovery of much a broader […]

YANG, S.T.; SHIM, M.; COHEN, P.: IGFBP-3 Inhibits Insulin Action IGFBP-3 is known to have IGF-independent actions on cell growth and metabolism. We found that BP-3 inhibits insulin-stimulated glucose transport in rodent 3T3-L1 adipocytes. Indeed, BP-3 inhibited insulin-stimulated GLUT-4 translocation from the cytoplasm to the surface membrane. BP-3’s ability to inhibit glucose transport in 3T3-L1 […]

HUNT, J.A.; KAISER, S.A.; VLECK, D.; VLECK, C.M.: Heterophil and lymphocyte cell ratios and plasma creatine kinase activity in passerines during migration Little is known about condition of birds undergoing seasonal migrations between the breeding and wintering grounds. Condition during migration will presumably affect their survival and success at their destination. We mist-netted birds at […]

LI, S.; WAGNER, C. A. ; FRIESEN, J. A. ; BORST, D. W. : HMG-CoA reductase and its regulation in the mandibular organ of the lobster, Homarus americanus The mandibular organ (MO) of decapod crustaceans synthesizes methyl farnesoate (MF), a sesquiterpene that appears to be involved in several physiological functions. 3-Hydroxy-3-methylglutaryl-coenzyme A reductase (HMGR) is […]