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Androgen levels and social interactions in breeding males of the peacock blenny

Androgen levels and social interactions in breeding males of the peacock blenny

... established. In the stoplight parrotfish territorial males have higher androgen levels (both T and KT) than bachelor ...ever, in bachelor males which were allowed ... See full document

12

The role of male visual and chemical cues on the activation of female courtship behaviour in the sex-role reversed peacock blenny

The role of male visual and chemical cues on the activation of female courtship behaviour in the sex-role reversed peacock blenny

... placed in one of the lateral compartments inside the available ...introduced in the acclimation area for 5 min. All males adopted the provided shelter during this ... See full document

10

The effect of nest aggregation on the reproductive behaviour of the peacock blenny Salaria pavo

The effect of nest aggregation on the reproductive behaviour of the peacock blenny Salaria pavo

... Despite the fact that variability among males in the time spent in the nests was higher in the AT, the aggregation of nests did not result in ... See full document

9

Effects of androgens on social behavior and morphology of alternative reproductive males of the azorean rock-pool blenny

Effects of androgens on social behavior and morphology of alternative reproductive males of the azorean rock-pool blenny

... situation the tactic switching, or at least its beginning, could be rapidly induced by exogenous steroid treatment, suggesting that in nature satellites may switch tactics within the same ... See full document

10

Fecal androgen levels in common marmoset (Callithrix jacchus) males living in captive family groups

Fecal androgen levels in common marmoset (Callithrix jacchus) males living in captive family groups

... marmoset males seems not to be established and maintained by agonistic behavior since no data are available showing overt fighting among them, particularly between fathers and sons ...changes ... See full document

8

Androgens and immune function in male alternative reproductive morphotypes of the peacock blenny Salaria pavo

Androgens and immune function in male alternative reproductive morphotypes of the peacock blenny Salaria pavo

... independent of changes in androgen levels, that may explain ART-related differences in immunocompe- tence is ...lymphocyte levels and body size in S. pavo ... See full document

11

Regulation of immunocompetence by different androgen metabolites in a blenny with alternative reproductive tactics

Regulation of immunocompetence by different androgen metabolites in a blenny with alternative reproductive tactics

... ABSTRACT In Parablennius parvicornis, small reproductive males with relatively low expression of secondary sexual characters (M morphotype) parasite on the parental investment of ... See full document

9

Brain levels of arginine–vasotocin and isotocin in dominant and subordinate males of a cichlid fish

Brain levels of arginine–vasotocin and isotocin in dominant and subordinate males of a cichlid fish

... (Oliveira and Almada, 1998). Dominant males form dense aggregations of breeding territories in shallow ...dig and defend spawning pits, and actively court females ... See full document

6

Temporal variation in male traits, nesting aggregations and mating success in the peacock blenny

Temporal variation in male traits, nesting aggregations and mating success in the peacock blenny

... At the beginning of the breeding season male Salaria pavo that have eggs in their nests are larger, have more developed anal glands and less intense eye-spots and are ... See full document

14

Social modulation of androgen levels in male teleost fish

Social modulation of androgen levels in male teleost fish

... effects of social interactions on the short-term modulation of andro- gen circulating ...example, in mammalian males (including humans) copulation induces a rise in ... See full document

13

Social interactions and androgens levels in marmosets (Callithrix jacchus) in field and laboratory studies: a preliminary investigation of the Challenge Hypothesis

Social interactions and androgens levels in marmosets (Callithrix jacchus) in field and laboratory studies: a preliminary investigation of the Challenge Hypothesis

... free-living breeding males showed a signi ficantly higher ratio between testicular volume and body mass compared to non-breeding marmosets, suggesting that testis size varies as a function ... See full document

10

RNA-SEQ applied to the peacock blenny Salaria pavo: unveiling the gene networks and signalling pathways behind phenotypic plasticity in a littoral fish

RNA-SEQ applied to the peacock blenny Salaria pavo: unveiling the gene networks and signalling pathways behind phenotypic plasticity in a littoral fish

... when the tide was high. All individuals were caught in their spawning territories, after verifying through behavioural observations that both females and nest-holder males were actively ... See full document

308

Androgen modulation of social decision-making mechanisms in the brain : An integrative and embodied perspective

Androgen modulation of social decision-making mechanisms in the brain : An integrative and embodied perspective

... conclusion, the evidence presented here substantiates the need to integrate the proximate mechanisms of behavior with their ecological and evolutionary function as it was proposed by ... See full document

6

Adjustment of brood size and androgen levels in a teleost species with exclusive male parental care

Adjustment of brood size and androgen levels in a teleost species with exclusive male parental care

... blennies, males defend nests in a hard substrate to which they attract females to ...Nest-holding males provide uniparental care to the eggs until they hatch, and this care consists ... See full document

9

Interpopulational variation of the mating system in the peacock blenny Salaria pavo

Interpopulational variation of the mating system in the peacock blenny Salaria pavo

... spatial and temporal dispersion of mates, or the resources required to attract them, is thought to be a key issue in the environmental potential for polygamy (Emlen and Oring ... See full document

7

Female mate choice and mate search tactics in a sex role reversed population of the peacock blenny Salaria pavo (Risso, 1810)

Female mate choice and mate search tactics in a sex role reversed population of the peacock blenny Salaria pavo (Risso, 1810)

... predict the comparison of the males’ characteristics to a threshold of quality that can be fixed or ...different levels of threshold, depending on their perception ... See full document

13

Brain aromatase mRNA expression in two populations of the peacock blenny Salaria pavo with divergent mating systems

Brain aromatase mRNA expression in two populations of the peacock blenny Salaria pavo with divergent mating systems

... during the peak of the breeding season at Culatra island, southern Portugal, 36°59 ′N;7°51′W (11 females, 12 nesting males, 12 parasitic males and 10 transitional ... See full document

7

Seasonal cell differentiation and olfactory potency of secretions by the anal glands of male peacock blenny Salaria Pavo

Seasonal cell differentiation and olfactory potency of secretions by the anal glands of male peacock blenny Salaria Pavo

... those of a blank (stim- ulus-free background water treated in exactly the same way as stimulus solu- ...blank and to 10 5 M L-cysteine were recorded between groups of related stimuli; ... See full document

9

Brain and gonadal aromatase activity and steroid hormone levels in female and polymorphic males of the peacock blenny Salaria pavo

Brain and gonadal aromatase activity and steroid hormone levels in female and polymorphic males of the peacock blenny Salaria pavo

... uses the conversion of tritiated 3H-androst-4- ene-3,17-dione (3H-A) to estrone as an indicator of ...AA. The optimal values of pH, incubation temperature and substrate ... See full document

9

Vision and visual variation in the peacock blenny

Vision and visual variation in the peacock blenny

... group in the retina could be particularly advantageous as photic conditions in temperate coastal environments like the Ria Formosa are highly variable and the visual tasks ... See full document

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