Vol 13 No 1

Published March 11, 2021

13 (1) June 2021

Articles

Diego Ariel Meloni, Graciela Inés Bolzón

e3170

Growth, photosynthesis and oxidative stress in Prosopis nigra (Fabaceae) under simulated glyphosate drift

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Arturo Angulo, Jorge San Gil

14

Xanthism in Costa Rican Cichlid fish (Cichliformes: Cichlidae), and ontogenetic variation in Parachromis dovii.

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Candela Duarte Baschini, Claudia M. Dellafiore

6

The pampean gray fox (Lycalopex gymnocercus) as a disperser of blackberry seeds (Morus nigra)

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Sianny Chavarría Zamora, Alejandro Chacón Villalobos, Rodolfo WingChing Jones

10

Effect of hen housing (free-range, free cage, and cage) on fatty acids, consumption, and consumer perception of the eggs

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Arturo Angulo, Ana Rosa Ramírez Coghi, Myrna López Sánchez

27

Identification keys for the fish of continental and insular waters of Costa Rica. Part I: Families.

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Gabriela Pérez Gómez, Virginia Alvarado García, Jorengeth Abad Rodríguez Rodríguez, Federico Herrera, Rolando Sánchez Gutiérrez

17

Physicochemical and microbiological quality of surface water in the Grande de Tárcoles River, Costa Rica: an ecological approach

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Zaidett Barrientos

12

Feeding habitat of the understory arboreal snail Tikoconus costarricanus (Stylommatophora: Euconulidae) in a tropical montane wet forest, Costa Rica

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Junior Pastor Pérez-Molina, Carola Scholz, Roy Pérez-Salazar, Carolina Alfaro-Chinchilla, Ana Abarca Méndez, Leandro Araya Leitón, Jeslyn Carranza Chaves, Addy Echevarría Figueroa, Mariana Elizondo Blanco, Rachel Ardón Rivera, Sofía Flores Aguilar, Catalina Solís Calderón

15

Spatial variation of physicochemical parameters in a constructed wetland for wastewater treatment: An example of the use of the R programming language

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Francisco S. Álvarez, Saúl González Murcia, Caleb D. McMahan, Wilfredo A. Matamoros

24

Cyprinodontiform fishes of El Salvador

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Paola López Fuentes, Manuel de Jesús Anzueto Calvo , Ernesto Velázquez Velázquez , Wilfredo A. Matamoros, Guillermo Salgado Maldonado

7

First record of the non-native fish Poecilia reticulata (Cyprinodontiformes: Poeciliidae), in Chiapas, southern Mexico

Pre-publication

José F. Cicció, Carlos Chaverri

10

Chemical composition of essential oils of the tree Melaleuca quinquenervia (Myrtaceae) cultivated in Costa Rica

Pre-publication

Natalia Gómez Calderón , Javier Ernesto Rodríguez Yánez, Edwin Fabián Fernández Fernández

10

Greenhouse gases emitted by agricultural vehicles in Costa Rica

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Hypothesis

Julian Monge Nájera

4

Why sloths defecate on the ground: rejection of the mutualistic model

Pre-publication