Título:
Seasonal and social factors associated with spacing in a wild territorial electric fish
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Autor:
Zubizarreta, Lucía
Quintana, Laura
Hernández, Daniel
Teixeira de Mello, Franco
Meerhoff, Mariana
Massaaki Honji, R.
Guimarães Moreira, R.
Silva Barbato, Ana Celia
Quintana, Laura
Hernández, Daniel
Teixeira de Mello, Franco
Meerhoff, Mariana
Massaaki Honji, R.
Guimarães Moreira, R.
Silva Barbato, Ana Celia
Tutor:
Tipo de documento:
Artículo
Editor:
Coleman, M. J.
Palabras clave:
Gymnotus omarorum
Seasonal variation
Behavioral plasticity
Territorial behavior
Seasonal variation
Behavioral plasticity
Territorial behavior
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Año de publicación:
2020
Contenido:
Resumen:
In this study, we focused on the seasonal variation of the determinants of territory size in the weakly electric fish Gymnotus omarorum. This species is a seasonal breeder that displays year-round territorial aggression. Female and male dyads exhibit indistinguishable non-breeding territorial agonistic behavior and body size is the only significant predictor of contest outcome. We conducted field surveys across seasons that included the identification of individual location, measurements of water physico-chemical variables, characterization of individual morphometric and physiological traits, and their correlation to spatial distribution. G. omarorum tolerates a wide range of dissolved oxygen concentration, and territory size correlated positively with dissolved oxygen in both seasons. In the non-breeding season, territory size was sexually monomorphic and correlated only with body size. In the breeding season, territory size no longer correlated with body size but differed between sexes: (i) the overall spatial arrangement was sexually biased, (ii) territory size depended on gonadal hormones in both sexes, which was expected for males, but not previously reported in females, (iii) female territory size showed a positive relationship with gonadal size, and (iv) females showed relatively larger territories than males. This study demonstrates seasonal changes in the determinants of territory size and thus contributes to the understanding of the mechanisms underlying the behavioral plasticity natural territorial behavior.
Descripción:
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Public Library of Science
EN:
PLoS ONE, 2020, 15(6): e0228976
Financiadores:
ANII: FCE_6180
ANII: FCE_4272
ANII: FCE_136381
ANII: FCE_4272
ANII: FCE_136381
Citación:
Zubizarreta, L, Quintana, L, Hernández, D, [y otros] "Seasonal and social factors associated with spacing in a wild territorial electric fish". PLoS ONE. [en línea] 2020, 15(6): e0228976. 19 h. DOI: 10.1371/journal.pone.0228976
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ISSN:
1932-6203
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Licencia:
Licencia Creative Commons Atribución (CC - By 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| 10.1371journal.pone.0228976.pdf | — | 1.26 MB | Adobe PDF |