Innate immunity of fish (overview).

A rapidly increasing number of chemicals, or their degradation products, are being recognized as possessing estrogenic activity, albeit usually weak. We have found that effluent from sewage treatme...

https://bura.brunel.ac.uk/bitstream/2438/795/1/Vitellogenesis.pdf

Vitellogenesis as a biomarker for estrogenic contamination of the aquatic environment.

Endocrine disrupting chemicals can potentially alter the reproductive physiology of fishes. To test this hypothesis, serum was collected from common carp (Cyprinus carpio) at five riverine location...

/pdf/vitellogenin-induction-and-reduced-serum-testosterone-5evgbzpqby.pdf

Vitellogenin induction and reduced serum testosterone concentrations in feral male carp (Cyprinus carpio) captured near a major metropolitan sewage treatment plant.

Microencapsulation is a process of building a functional barrier between the core and wall material to avoid chemical and physical reactions and to maintain the biological, functional, and physicochemical properties of core materials. Microencapsulation of marine, vegetable, and essential oils has been conducted and commercialized by employing different methods including emulsification, spray-drying, coaxial electrospray system, freeze-drying, coacervation, in situ polymerization, melt-extrusion, supercritical fluid technology, and fluidized-bed-coating. Spray-drying and coacervation are the most commonly used techniques for the microencapsulation of oils. The choice of an appropriate microencapsulation technique and wall material depends upon the end use of the product and the processing conditions involved. Microencapsulation has the ability to enhance the oxidative stability, thermostability, shelf-life, and biological activity of oils. In addition, it can also be helpful in controlling the volatility and release properties of essential oils. Microencapsulated marine, vegetable, and essential oils have found broad applications in various fields. This review describes the recognized benefits and functional properties of various oils, microencapsulation techniques, and application of encapsulated oils in various food, pharmaceutical, and even textile products. Moreover, this review may provide information to researchers working in the field of food, pharmacy, agronomy, engineering, and nutrition who are interested in microencapsulation of oils.

Microencapsulation of Oils: A Comprehensive Review of Benefits, Techniques, and Applications

https://digital.csic.es/bitstream/10261/44722/1/Mylonas_Fostier_Zanuy-GCE.pdf

Broodstock management and hormonal manipulations of fish reproduction

Comparative efficacy of clove oil and 2-phenoxyethanol as anesthetics in the aquaculture of European sea bass (Dicentrarchus labrax) and gilthead sea bream (Sparus aurata) at different temperatures

The comparative approach on how and when vitellogenesis occurs in the diverse reproductive strategies displayed by aquatic and terrestrial lower vertebrates is presented in this chapter; moreover, attention has been paid to the multihormonal control of hepatic vitellogenin synthesis as it is related to seasonal changes and to vitellogenin use by growing oocytes. The hormonal mechanisms regulating vitellogenin synthesis are also considered, and the effects of environmental estrogens on the feminization process in wildlife and humans have been reported. It is then considered how fundamental nonmammalian models appear to be, for vitellogenesis research, addressed to clarifying the yolkless egg and the evolution of eutherian viviparity.

Multihormonal control of vitellogenesis in lower vertebrates.

Temporary impairment of reproduction in freshwater teleost exposed to nonylphenol.

Changes of lysosomal enzyme activities in sea bass (Dicentrarchus labrax) eggs and developing embryos

The sea bass Dicentrarchus labrax is a pelagic egg spawner; sinking eggs are unable to develop into embryos, and this is a limitation in the controlled reproduction of this species. The eggs were divided into good and poor quality, by virtue of their ability to float or sink in seawater. High levels of cathepsins B, D, and L were detected in the eggs, whereas no cathepsin A, C, and E activity was detected. Cathepsin D was found at significantly higher levels in sinking eggs, whereas cathepsin L was more abundant in floating eggs. Since degradation of yolk proteins is essential for the early development of the embryo, the levels of cathepsins A, B, C, D, E, and L were tested in different stages of embryo development. Cathepsin A activity was detectable from the morula stage at which time cathepsin B activity reached its maximal level. Cathepsins A and L reached maximal activity during segmentation, and this corresponded with major changes in the electrophoretic pattern of yolk proteins during embryogenesis suggesting their involvement in yolk protein mobilization at this time. Cathepsin D reached its maximal activity during hatching. q 2001 Elsevier Science B.V. All rights reserved.

Alberta Maria Polzonetti-Magni

Papers

Comparative efficacy of clove oil and 2-phenoxyethanol as anesthetics in the aquaculture of European sea bass (Dicentrarchus labrax) and gilthead sea bream (Sparus aurata) at different temperatures

Multihormonal control of vitellogenesis in lower vertebrates.

Temporary impairment of reproduction in freshwater teleost exposed to nonylphenol.

Changes of lysosomal enzyme activities in sea bass (Dicentrarchus labrax) eggs and developing embryos

sea bass Dicentrarchus labrax eggs and developing embryos