BIOMEDICINE

Association of the p53 codon 72 polymorphism to gastric cancer risk in a hight risk population of Costa Rica

Warner Alpízar-Alpízar, Rafaela Sierra, Patricia Cuenca, Clas Une, Fernando Mena, Guillermo Ignacio Pérez-Pérez

317-324 |

ECOLOGY

Efect of heavy metals on the growth of the tropical microalga Tetrasermis chuii (Prasinophyceae)

Jiudith Cordero, Miguel Guevara, Ever Morales, César Lodeiros

325-330 |

Carotenogenesis of five strains of the algae Dunaliellasp. (Chlorophyceae) isolated from Venezuelan hypersaline lagoons.

Miguel Guevara, César Lodeiros, Olga Gómez, Nathalie Lemus, Paulino Núñez, Lolymar Romero, Aléikar Vázquez, Néstor Rosales

331-337 |

Effect of 2,4-D, hydric stress and light on indica rice (Oryza sativa) somatic embryogenesis

Allan Meneses, Dora Flores, Miguel Muñoz, Griselda Arrieta, Ana M Espinoza

361-368 |

Density-dependent reproductive and vegetative allocation in the aquatic plant Pistia stratiotes (Araceae)

Flávia Freitas Coelho, Liene Deboni, Frederico Santos Lopes

369-376 |

Vegetation diversity, composition and structure in a cattle agro-landscape of Matiguás, Nicaragua.

Dalia Sánchez Merlos, Celia A Harvey, Alfredo Grijalva, Arnulfo Medina, Blas Hernández, Sergio Vílchez

387-414 |

Breeding systems of the Paraguaná coastal plain plants, Venezuela

Luis José Lemus-Jiménez, Nelson Ramírez

415-430 |

TERRESTRIAL INVERTEBRATES

Intestinal parasites in howler monkeys Alouatta palliata (Primates: Cebidae) of Costa Rica

Misael Chinchilla Carmona, Olga Guerrero Bermúdez, Gustavo A. Gutiérrez-Espeleta, Ronald Sánchez Porras, Beatriz Rodríguez Ortiz

437-445 |

Biomass production and nutritional value of Artemia sp. (Anostraca: Artemiidae) in Campeche, México

Teresita Maldonado-Montiel, Leticia G Rodríguez-Canché

447-454 |

Contribution of food availability to the more rapid growth of the scallop, Euvola ziczac (Pteroida, Pectinidae) in bottom than in suspended culture

Patrick Hunauld, Anibal Vélez, Noris Jordan, John H Himmelman, Francisco Morales, Luis Freites, César J Lodeiros

455-461 |

Fishery and biometrics of genus Calappa crabs (Brachyura: Calappidae) in northeastern Venezuela.

José J. Alió, Luis A. Marcano, Douglas E Altuve

463-474 |

Decadal variability in growth of the Caribbean spiny lobster Panulirus argus (Decapoda: Paniluridae) in Cuban waters

María Estela de León, Juana López Martínez, Daniel Lluch Cota, Sergio Hernández Vázquez, Rafael Puga

475- 486 |

AQUATIC VERTEBRATES

Reproductive biology of Oreochromis niloticus (Perciformes: Cichlidae) at Emiliano Zapata dam, Morelos, Mexico

B Peña-Mendoza, J L. Gómez-Márquez, I H Salgado-Ugarte, D Ramírez-Noguera

515-522 |

Development of the tropical fish Xenomelaniris brasiliensis (Pisces: Atherinidae) from embryo to larva and time to metamorphosis

Verónica del Río, Aidé Velásquez, Tomas Cabrera, Jesús Rosas

503-513 |

A new Ecuadorian species of the Andean fish genus Grundulus (Characiformes: Characidae).

César Román-Valencia, Raquel I Ruiz C., Ramiro Barriga

537- 544 |

Blood and urine physiological values in farm-cultured Rana catesbeiana (Anura: Ranidae) in Argentina

José A. Coppo, Norma B Mussart, Santiago A. Fioranelli

545- 559 |

The Tadpoles of Hyla rufitela(Anura: Hylidae)

Heinz Hoffmann

561- 568 |

Anuran fauna from Salta City, Argentina

Rebeca Acosta, Rosa Vera Mesones, Alejandro Núñez

569- 575 |

Birds of a high-altitude cloud forest in Alta Verapaz, Guatemala

Knut Eisermann, Ulrich Schulz

577- 594 |

Errata