Male urine signals social rank in the Mozambique tilapia (Oreochromis mossambicus)
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چکیده
منابع مشابه
Urine as a social signal in the mozambique tilapia (Oreochromis mossambicus).
Despite the high degree of social organization and complex behaviour of many cichlids, little is known about the role of chemical communication in these fish. The Mozambique tilapia is a maternal mouth-brooding cichlid; territorial males congregate in leks and are actively sought by ripe females. When approached by a female, males display a range of well-characterized behaviours such as nestdig...
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Light plays a pivotal role in animal orientation. Aquatic animals face the problem that penetration of light in water is restricted through high attenuation which limits the use of visual cues. In pure water, blue and green light penetrates considerably deeper than red and infrared spectral components. Submicroscopic particles and coloured dissolved organic matter, however, may cause increased ...
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regulated by, and suited to, the environment in which they reproduce. In many teleosts, which spawn in either freshwater or seawater, sperm motility is initiated by osmotic shock when sperm are ejaculated. These osmolality dependent regulatory systems are quite different in freshwater cyprinid teleosts, such as carp, gold fish and zebrafish, and marine teleosts, such as the pufferfish and floun...
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Among the adaptations of aquatic species during evolution of terrestrial tetrapods was the development of an epidermis preventing desiccation. In present day mammals, keratinocytes of the epidermis, using a membrane-bound transglutaminase (Tgm1), accomplish this function by synthesizing a scaffold of cross-linked protein to which a lipid envelope is attached. This study characterizes the abilit...
متن کاملMg2+ transport in plasma membrane vesicles of renal epithelium of the Mozambique tilapia (Oreochromis mossambicus)
To elucidate the mechanisms involved in Mg2+ transport at the apical and basolateral poles of the renal tubular epithelium, apical and basolateral plasma membrane vesicle preparations were derived from kidney tissue of freshwater- and seawater-adapted Mozambique tilapia Oreochromis mossambicus. Brush-border preparations were enriched 15.8-fold in alkaline phosphatase activity and consisted almo...
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ژورنال
عنوان ژورنال: BMC Biology
سال: 2007
ISSN: 1741-7007
DOI: 10.1186/1741-7007-5-54