We evaluated the seed dispersal of Bursera longipes by birds along a successional gradient of tropical dry forest (TDF) in southwestern Mexico. B. longipes is an endemic tree to the TDF in the Balsas basin. The relative abundance of frugivorous birds, their frequency of visits to B. longipes and the number of removed fruits were recorded at three study sites with different stages of forest succ...

Phytochemical investigation of polyphenolic contents of Podocarpus gracilior Pilger and Ruprechtia polystachya Griseb leaves were resulted in isolation and identification of three and six known polyphenolic compounds respectively. In addition of a new polyphenolic compound isolated for the first time from nature from R. polystachya which is identified as 4`-O-Galloyl-myricetin-3-O-α-L-rhamnopyr...

Objective: To determine the structural and phenological characteristics of four major tree species in tropical deciduous forests. Design/Methodology/Approach: their structure, ≥ 10 cm wide trees were registered at a height 1.30 m 30 sites 500 m2. For purposes, seven selected. The following stages evaluated: dormancy, vegetative, flowering, fruiting, seeding. Results: Four hundred five individua...

S. Ortega-Martorell, I. Olier, A. Vellido, M. Julià-Sapé, and C. Arús Grup d’Aplicacions Biomèdiques de la RMN (GABRMN), Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallès, Barcelona, Spain, Centro de Investigación Biomédica en Red en Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Zaragoza, Spain, Institut de Neurociències (I...

José Antonio Campos-Ortega (1940-2004), a Spanish scientist who became a leading figure in the developmental genetics of the nervous system, spent most of his scientific life in Germany. Nevertheless, he remained deeply rooted in his native country. His thinking, his ambition and his work were driven by scientific, philosophical and historical questions. He started as a neuroanatomist, working ...

This study investigated the anesthetic potential of the essential oil (EO) of Aloysia polystachya in juveniles of dusky grouper (Epinephelus marginatus). Fish were exposed to different concentrations of EO of A. polystachya to evaluate time of induction and recovery from anesthesia. In the second experiment, fish were divided into four groups: control, ethanol and 50 or 300 µL L-1 EO of A. poly...

Six new flavonoids 2',4'-dihydroxychalcone-6'-O-β-d-glucopyranoside (1), α,3,2',4'-tetrahydroxy-4-methoxy-dihydrochalcone-3'-C-β-glucopyranosy-6'-O-β-d-glucopyranoside (2), 7-hydroxy-5,8'-dimethoxy-6'α-l-rhamnopyranosyl-8-(3-phenyl-trans-acryloyl)-1-benzopyran-2-one (3), 6'7-dihydroxy-5,8-dimethoxy-8(3-phenyl-trans-acryloyl)-1-benzopyran-2-one (4), 9-hydroxy-3,8-dimethoxy-4-prenylpterocarpan (5...