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Thyroid hormones in growth and development of fish.
A test of the ‘challenge hypothesis’ in cichlid fish: simulated partner and territory intruder experiments
Social modulation of androgen levels in male teleost fish.
Why do winners keep winning? Androgen mediation of winner but not loser effects in cichlid fish
- Rui F. Oliveira, Ana C. Silva, A. Canario
- PsychologyProceedings of the Royal Society B: Biological…
- 22 June 2009
The treatment with anti-androgen blocks the winner effect, whereas androgen administration fails to reverse the loser effect, suggesting an involvement of androgens on the winner but not on the losers effect.
Weight-length relationships for selected fish species of the small-scale demersal fisheries of the south and south-west coast of Portugal
Social Modulation of Sex Steroid Concentrations in the Urine of Male Cichlid FishOreochromis mossambicus
Social interactions may have an important modulatory effect on sex steroid concentrations in Cichlid fish Oreochromis mossambicus.
Endocrine correlates of male polymorphism and alternative reproductive tactics in the Azorean rock-pool blenny, Parablennius sanguinolentus parvicornis.
- R. F. Oliveira, A. Canario, M. Grober, R. S. Santos
- BiologyGeneral and comparative endocrinology
- 1 March 2001
It was found that M+ males have significantly higher levels of 11-ketotestosterone (KT), but not testosterone (T), than M- males, and that nest-holder males that succeeded in having females spawn in their nests during the observation period had significantly lower KT levels than unsuccessful males.
The parathyroid hormone family of peptides: structure, tissue distribution, regulation, and potential functional roles in calcium and phosphate balance in fish.
- P. Guerreiro, J. Renfro, D. Power, A. Canario
- BiologyAmerican journal of physiology. Regulatory…
- 1 February 2007
This review provides a comprehensive overview of the physiological roles, distribution, and molecular relationships of the piscine PTH-like peptides.
Branchial osmoregulatory response to salinity in the gilthead sea bream, Sparus auratus.
- R. Laiz‐Carrión, P. Guerreiro, J. Fuentes, A. Canario, M. D. P. Martín del Río, J. Mancera
- Environmental Science, BiologyJournal of experimental zoology. Part A…
- 1 July 2005
A "U-shaped" relationship was observed between environmental salinity and gill Na+,K+ -ATPase activity in both long- and short-term exposure to altered salinity, which predicts a poor adaptation most likely related to deficiency or absence of specific components of the CC important for ion xuptake.
Watching fights raises fish hormone levels
Cichlid fish wrestling for dominance induce an androgen surge in male spectators, leading to a surge in testosterone levels among male spectators.