Search
Now showing items 411-420 of 556
Distribución, riqueza e identificación molecular de cangrejos araña (Brachyura: Majoidea: Mithracidae) de Costa Rica
(Universidad Nacional, Costa Rica, 2022-01-31)
El objetivo de este estudio fue determinar la distribución, riqueza e identificación molecular de cangrejos araña en las costas Pacífico y Caribe costarricenses. Se realizaron mapas de distribución de especies de la familia ...
Research frontiers in penaeid shrimp reproduction: future trends to improve commercial production
(Elsevier, 2019)
Shrimp farming worldwide is based on a similar technological package, characterized by three phases: Controlled Reproduction, Larvae Culture, and Grow-out Culture. This basic aquaculture package uses broodstock animals, ...
The relationship between perch type and aggressive behavior in the lizard Norops polylepis (Squamata: Dactyloidae)
(Universidad de Sao Paulo, 2015)
The intensity of aggression against intruders by owners of a territory has been related to the type of resources available to an individual within its territory. The influence of perch-site characteristics on aggressive ...
Alexandrium monilatum (Howell) Balech bloom in the Gulf of Nicoya, Puntarenas
(The Intergovernmental Oceanographic Commission of UNESCO (Francia), 2005-12)
The Gulf of Nicoya, an estuary on
the pacific coast of Costa Rica, extends
80 Km, from the Tempisque River to
the Pacific, with a maximum width of
50 Km at the mouth, and an area of 1550
Km2. Hydrography of the Gulf ...
Descripción histológica de la oogénesis y espermatogénesis del camarón de cultivo, Litopenaeus vannamei
(Revista de Biología Marina y oceanografía, 2013)
This research describes detailed stages of oogenesis and spermatogenesis at histological level in the white shrimp of the western Pacific, Litopenaeus vannamei. Both processes were studied in cultured organisms under ...
Variación mensual del índice de gonadosomatico de Colossoma macropomum relacionado a factores ambientales en Cañas, Costa Rica
(Universidad Nacional (Costa Rica), 2000)
Con el fin de determinar la variación mensual en el índice gonadosomático de Colossoma macropomum en estanques, se tomaron muestras mensuales de 10 individuos desde setiembre de 1993 hasta setiembre de 1994. Se midieron ...
Cooling, cryoprotectant and hypersaline sensitivity of penaeid shrimp embryos and nauplius larvae
(Elsevier, 2001-10-23)
The sensitivity of embryos of the penaeid shrimp, Trachypenaeus byrdi, to cooling, cryoprotec tant exposure dimethyl sulfoxide : DMSO, sucrose, methanol and glycerol , and hypersaline Ž .
treatment was assessed in order ...
Mass mortality of Canthigaster rostrata(Tetraodontiformes: Tetraodontidae) on the southern Costa Rican Caribbean coast
(Universidad Nacional (Costa Rica), 2018-01)
In 2017 a mass mortality event of the reef fish Canthigaster rostrata was observed on the Southern Caribbean coast of Costa Rica. The 86 subjects collected, possibly juveniles, were less than 49 mm and below 2.8 g. Similar ...
Citotaxonomía comparativa de tres especies de Cichlasoma (Pisces: Cichlidae) nativas de Costa Rica
(Universidad de Costa Rica, 1991)
The karyotype oí three species oí CichlasofM: C. dOllii, C. managwmse and C. friedrichstali were studied.
The number of diploid chromosomes is 2n=48 in the fust two species. Their karyotypes are composed of four pairs ...
Distributional range expansion of Cataractocoris Marginiventris Usinger (Hemiptera: Heteroptera: Naucoridae) and first record from El Salvador
(Instituto de Ecología, A.C. - INECOL (México), 2016-04-10)
The presence of the species Cataractocoris marginiventris is recorded for the first time in El Salvador, which represents a significant expansion of the species' distribution range towards the south.