Intraovarian sperm storage in Helicolenus dactylopterus dactylopterus fertilitzation, crypt formation and maintenance of stored sperm

The females of the bluemouth rockfish, Helicolenus dactylopterus dactylopterus (DelaRoche, 1809), store sperm within their ovaries for periods of up to 10 months. Twenty six females with standard lengths between 152 and 257 mm and six males with standard lengths between 253 and 209 mm were caught storage crypts with stored spermatozoa and to describe their evolution over the year. After internal fertilization and once sperm reaches the ovary, a crypt forms probably by an epithelial inclusion at the base of the lamellae of one or several spermatozoa groups that are floating freely in the interlamellar space of the ovarian lumen. Stored spermatozoa have a large cytoplasm bag surrounding their heads. This bag could serve as a nutritive reservoir during the long storage period. Many desmosonal and tight junctions between the crypt cells ensure tha male sex cells are protected against the female immune system

Evolutionary psychology and evolutionary developmental psychology : Understanding the evolution of human behavior and development

Resumen tomado de la publicaci??n

Introduction to Game Design and Development

This is the introductory lecture to COMP3218. We introduce ourselves, cover the philosophy of the course, the structure and assessment process, and lead an initial game design exercise.

International Development Policy: Religion and Development, de Carbonnier, G. (ed.)

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Health care network formation and policyholders' welfare

We develop a model in which two insurers and two health care providers compete for a fixed mass of policyholders. Insurers compete in premium and offer coverage against financial consequences of health risk. They have the possibility to sign agreements with providers to establish a health care network. Providers, partially altruistic, are horizontally differentiated with respect to their physical address. They choose the health care quality and compete in price. First, we show that policyholders are better off under a competition between conventional insurance rather than under a competition between integrated insurers (Managed Care Organizations). Second, we reveal that the competition between a conventional insurer and a Managed Care Organization (MCO) leads to a similar equilibrium than the competition between two MCOs characterized by a different objective i.e. private versus mutual. Third, we point out that the ex ante providers’ horizontal differentiation leads to an exclusionary equilibrium in which both insurers select one distinct provider. This result is in sharp contrast with frameworks that introduce the concept of option value to model the (ex post) horizontal differentiation between providers.

The language of children : evolution and development of secondary consciousness and language.

Proporciona una introducción sobre como los niños adquieren y utilizan el lenguaje. Hace hincapié en la explicación psicológica del desarrollo del lenguaje, pero, sin olvidar, los aspectos cognitivo, biológico y social en el desarrollo de éste, y también, considera la influencia de la escolaridad y la experiencia social.

Teachers in action : tasks for in-service language teacher education and development.

Ofrece un marco flexible para alentar a los profesores de lengua en la investigación de temas que son relevantes para su propio desarrollo profesional. Contiene una serie de recursos diseñados específicamente para ayudarles a desarrollar sus habilidades, conocimientos y actitudes. Estos recursos son extensas tareas presentadas en hojas de trabajo, que pueden fotocopiarse y que sirven para la formación continua del profesor y para el desarrollo de programas.