Fighting cichlids: Dynamic of intrasexual aggression in dyadic agonistic encounters
Aggression is an extremely complex behaviour and female aggression is understudied when compared to males. Despite the fact that it has been suggested that conflict among females may be more frequently resolved peacefully, in many species females show high levels of aggression. We used Cichlasoma di...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v147_n_p61_Scaia http://hdl.handle.net/20.500.12110/paper_03766357_v147_n_p61_Scaia |
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paper:paper_03766357_v147_n_p61_Scaia2023-06-08T15:38:46Z Fighting cichlids: Dynamic of intrasexual aggression in dyadic agonistic encounters Aggressive behaviour Cichlasoma dimerus Contest Fish Intra-species interaction aggression agonistic behavior cichlid contest competition encounter rate intraspecific competition morphology sex-related difference adult aggression cichlid conflict female human latent period male morphological trait motivation nonhuman animal sexual characteristics Animalia Cichlasoma Cichlidae Aggression Animals Cichlids Female Male Motivation Sex Characteristics Aggression is an extremely complex behaviour and female aggression is understudied when compared to males. Despite the fact that it has been suggested that conflict among females may be more frequently resolved peacefully, in many species females show high levels of aggression. We used Cichlasoma dimerus to describe dynamics and conflict outcome in intrasexual agonistic encounters. We performed encounters of two sex-matched animals in a neutral arena and we recorded agonistic interactions during one hour. All aggressive and submissive behaviours were described and quantified to perform the ethogram. Encounters followed three phases: pre-contest, contest and post-resolution. Latency, time of resolution and frequency of aggressive displays did not differ between sexes. Relative variations in size between female opponents better explained aggression outcome in each contest, since higher levels of aggression occurred in dyads of more similar fish. However, this was not observed in males, suggesting that probably morphological characteristics could be less relevant in male conflict resolution. Altogether these results suggest that in this ethological context, C. dimerus females are as aggressive as males and that they have similar motivation towards territorial aggression, emphasizing the need of deepening the study of aggression in females and not only in males. © 2017 Elsevier B.V. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v147_n_p61_Scaia http://hdl.handle.net/20.500.12110/paper_03766357_v147_n_p61_Scaia |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Aggressive behaviour Cichlasoma dimerus Contest Fish Intra-species interaction aggression agonistic behavior cichlid contest competition encounter rate intraspecific competition morphology sex-related difference adult aggression cichlid conflict female human latent period male morphological trait motivation nonhuman animal sexual characteristics Animalia Cichlasoma Cichlidae Aggression Animals Cichlids Female Male Motivation Sex Characteristics |
| spellingShingle |
Aggressive behaviour Cichlasoma dimerus Contest Fish Intra-species interaction aggression agonistic behavior cichlid contest competition encounter rate intraspecific competition morphology sex-related difference adult aggression cichlid conflict female human latent period male morphological trait motivation nonhuman animal sexual characteristics Animalia Cichlasoma Cichlidae Aggression Animals Cichlids Female Male Motivation Sex Characteristics Fighting cichlids: Dynamic of intrasexual aggression in dyadic agonistic encounters |
| topic_facet |
Aggressive behaviour Cichlasoma dimerus Contest Fish Intra-species interaction aggression agonistic behavior cichlid contest competition encounter rate intraspecific competition morphology sex-related difference adult aggression cichlid conflict female human latent period male morphological trait motivation nonhuman animal sexual characteristics Animalia Cichlasoma Cichlidae Aggression Animals Cichlids Female Male Motivation Sex Characteristics |
| description |
Aggression is an extremely complex behaviour and female aggression is understudied when compared to males. Despite the fact that it has been suggested that conflict among females may be more frequently resolved peacefully, in many species females show high levels of aggression. We used Cichlasoma dimerus to describe dynamics and conflict outcome in intrasexual agonistic encounters. We performed encounters of two sex-matched animals in a neutral arena and we recorded agonistic interactions during one hour. All aggressive and submissive behaviours were described and quantified to perform the ethogram. Encounters followed three phases: pre-contest, contest and post-resolution. Latency, time of resolution and frequency of aggressive displays did not differ between sexes. Relative variations in size between female opponents better explained aggression outcome in each contest, since higher levels of aggression occurred in dyads of more similar fish. However, this was not observed in males, suggesting that probably morphological characteristics could be less relevant in male conflict resolution. Altogether these results suggest that in this ethological context, C. dimerus females are as aggressive as males and that they have similar motivation towards territorial aggression, emphasizing the need of deepening the study of aggression in females and not only in males. © 2017 Elsevier B.V. |
| title |
Fighting cichlids: Dynamic of intrasexual aggression in dyadic agonistic encounters |
| title_short |
Fighting cichlids: Dynamic of intrasexual aggression in dyadic agonistic encounters |
| title_full |
Fighting cichlids: Dynamic of intrasexual aggression in dyadic agonistic encounters |
| title_fullStr |
Fighting cichlids: Dynamic of intrasexual aggression in dyadic agonistic encounters |
| title_full_unstemmed |
Fighting cichlids: Dynamic of intrasexual aggression in dyadic agonistic encounters |
| title_sort |
fighting cichlids: dynamic of intrasexual aggression in dyadic agonistic encounters |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03766357_v147_n_p61_Scaia http://hdl.handle.net/20.500.12110/paper_03766357_v147_n_p61_Scaia |
| _version_ |
1768544276662190080 |