Browsing Artículos científicos by Author "Urriola Hernández, Mario"
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Composition, growth and condition index for a population of Poecilia reticulata (Pisces: Poeciliidae), in a pond in Heredia, Costa Rica
Urriola Hernández, Mario; Cabrera Peña, Jorge; Protti Quesada, Maurizio (Universidad Nacional, Costa Rica, 2003)A pond population of Poecilia reticulata was studied in Santo Domingo, Heredia, Costa Rica, between September and November of 1998. The sex ratio was 1:0.49 (males:females). The mean total length was 34.43 ± 7.26 mm for ... -
Distribución y abundancia de Caiman crocodilus en el Refugio Nacional de Vida Silvestre Caño Negro, Costa Rica
Cabrera Peña, Jorge; Protti Quesada, Maurizio; Urriola Hernández, Mario; Cubero Murillo, Rolando (Revista de Biología Tropical vol.51 no.2 571-578 2003, 2003)The distribution and abundance of a population of Caiman crocodilus fuscus were estimated by monthly counting of eyeshines at night, from February 1999 to March 2000 in six transects of Río Frío in the Caño Negro National ... -
Fecundidad, fertilidad e índice gonadosomático de Poecilia reticulata(Pisces: Poeciliidae) en Heredia, Costa Rica
Urriola Hernández, Mario; Cabrera Peña, Jorge; Protti Quesada, Maurizio (Universidad de Costa Rica, 2004)Fertility, fecundity and gonadosomatic index of Poecilia reticulata(Pisces: Poeciliidae) in Heredia, Costa Rica. Between September and November of 1998, 1 432 females of Poecilia reticulata were collected in a ...