Using an integrative approach (morphology of the adult and larvae, bioacoustics, osteology, karyotype, molecular data), we described a new tetraploid species Odontophrynus to Mantiqueira mountain range, in southeastern Brazil. The data suggest that toledoi sp. nov., O. juquinha (aff. juquinha) comprise clade with specimens distributed along three distinct ranges Brazil: (O. nov.) Espinhaço moun...

The type section of the Middle and Upper Jurassic Chaman Bid Formation is in the western Koppeh Dagh Basin (Northeast Iran). It is unusually thick and contains a rather rich ammonite fauna, ranging from Bathonian to Tithonian. The ammonites described here come from a 134-m-thick interval in the upper part of member (D) in the middle part of the formation, consisting of an alternation of grey li...

a detailed study of the lower cretaceous dasyclad algae of the shahkuh formation was done in the chahpalang stratigraphic section (its name comes from the mountain in studied area). according to the study of the 101 thin sections, for the first time, we recognized 7 genus and 8 species of dasyclad algae from shah kuh formation in chah palang section including angioporella cf. fouryae, griphopor...

Disproportionately large feeding structures have been used to infer food limitation in some marine invertebrate larvae, but few studies have investigated whether other factors alter larval morphology in similar ways. In this study, larvae of Crepidula fornicata were reared either at five different food concentrations of Isochrysis galbana (clone T-ISO) at a single temperature (22 degrees C) (Ex...

The presence of a sodium-dependent, saturable uptake process is described in basolateral membranes of rat renal cortex for L-glutamine. Concentration-dependence studies indicate the presence of multiple transport systems wi th Kmz of 0.032 mM and lV7t " of 0.028 nmol/mg of protein per min, and Km2 of 6 mM and V z of 17.6 nmol/mg of protein per min. Lysine completely inhibits the high-aff inity,...

School choice policy has implications for school travel as it allows students to attend schools farther from their residence than their neighborhood schools. This paper uses a case study from Oregon to investigate how school choice aff ects parents’ school travel decision making and the degree to which school choice aff ects children’s walking or biking to school. The research shows that school...