Ovulationis a process regulated by neuroendocrine signals from the hypothalamus, pituitary gland, ovaries, etc.Gonadotropin-releasing hormone (GnRH) is secreted in the hypothalamus, which stimulates the release of gonadotropins in the adenohypophysis. The secretion of GnRH is modulated by various hormones or neurotransmitters that regulate it in a stimulating or inhibitory manner....
El ajolote de Xochimilco (Ambystoma mexicanum) es una salamandra neoténica endémica de la zona lacustre del valle de México. Aunque es una especie que ha sido utilizada como un modelo biológico en diversos estudios ontogénicos y biomédicos, son escasos los conocimientos que se tienen acerca de su biología de la...
Coastal lagoons are systems with high levels of productivity and a big biological diversity as a result of a high ecological complexity, due to the different environmental processes that result from seasonal, diel and tides cycles periods and to the abrupt changes of the environmental variables of these periods. The...