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Distribución y abundancia de Caiman crocodilus en el Refugio Nacional de Vida Silvestre Caño Negro, Costa Rica
(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 ...
Biological treatments affect the chemical composition of coffee pulp
(Elsevier, 2003-02-16)
Biological treatments were applied to fresh coffee pulp (CoP) to improve its nutritive value for monogastric animals by reducing
its content of cellulose and antinutritional factors (ANFs) such as total phenols, tannins ...
Composition, growth and condition index for a population of Poecilia reticulata (Pisces: Poeciliidae), in a pond in Heredia, Costa Rica
(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 ...
Growth of Oreochromis aureus fed with diets containing graded levels of coffee pulp and reared in two culture systems
(Aquaculture vol.217 no.1-4 275-283 2003, 2003)
A study was conducted to compare growth and feed utilization of Oreochromis aureus fed graded
levels of coffee pulp (CoP) and reared in aquaria or in pens. Diets contained 0, 130, 260 and 390 g
kg 1 of oven-dried CoP. ...
Induction of sperm activation in open and closed thelycum penaeoid shrimps
(Aquaculture vol.216 no.1-4 371-381 2003, 2003)
A modified egg water (EW) technique for in vitro induction of sperm activation was applied to Trachypenaeus byrdi, Xiphopenaeus riveti (closed thelycum shrimps), and Litopenaeus occidentalis (open thelycum) from a tropical ...