The identification of five stages for female and two stages for male eels Anguilla anguilla using multivariate analysis was carried out on a large sample of individuals collected at six different locations in France. Stages corresponded to a growth phase (stages I and II), a pre-migrant phase (III) and two migrating phases (IV and V). It is likely that an important period of growth triggered si...

The pars distalis of the tortoise, Geoclemis reevesii, was studied immunocytochemically with regards to its fine structure and distribution of different cell types. The pars distalis consists of cephalic and caudal lobes and a zona tuberalis, each with distinct cellular components. The cephalic lobe contains ACTH cells and prolactin (PRL) cells, while the caudal lobe consists of STH (GH) cells,...

In this paper, we suggest a deterministic mechanism for the generation and development of sidebranches in dendritic growth. We investigated the existence of such a mechanism for Gibbs-Thomson-Herring (GTH [1]) anisotropic capillary boundary condition recently in our previous work [2] . Here, we focus our study on the GTH anisotropic kinetic boundary condition. We develop and apply accurate boun...

In this paper we report the first complete mapping of the pituitary in a tuna species. The various different adenohypophysis cell types of the bluefin tuna, Thunnus thynnus L. have been identified and located using different antisera against mammalian and piscine hormones and various histochemical techniques: PAS, Alcian Blue pH 2.5 and lectins -ConA and WGA(Neutral and Acidic Glycoproteins); B...

Insulin-like growth factor-I (IGF-I) has been shown to be involved in pubertal activation of gonadotropin (GTH) secretion. The aim of this study was to determine if IGF-I directly stimulates synthesis and release of GTH at an early stage of gametogenesis. The effects of IGF-I on expression of genes encoding glycoprotein alpha (GPalpha), follicle-stimulating hormone (FSH) beta, and luteinizing h...

We have investigated and developed a theoretical approach to explore stimulated Brillouin scattering (SBS) phenomena in single mode fiber. SBS happening threshold power condition has been studied in terms of fiber parameters and input pump power. To assess threshold power precisely, the pump depletion effect and fiber loss has been included by employing 1% criterion. The threshold exponential g...