Dominance behaviour in a non-aggressive flatfish, Senegalese sole (Solea senegalensis) and brain mRNA abundance of selected transcripts
Visualitza/Obre
Autor/a
Fatsini, Elvira
Rey, Sonia
Ibarra-Zatarain, Zohar
Mackenzie, Simon
Duncan, Neil J.
Data de publicació
2017-09-06ISSN
1932-6203
Resum
Dominance is defined as the preferential access to limited resources. The present study aimed to characterise dominance in a non-aggressive flatfish species, the Senegalese sole (Solea senegalensis) by 1) identifying dominance categories and associated behaviours and 2) linking dominance categories (dominant and subordinate) with the abundance of selected mRNA transcripts in the brain. Early juveniles (n = 74, 37 pairs) were subjected to a dyadic dominance test, related to feeding, and once behavioural phenotypes had been described the abundance of ten selected mRNAs related to dominance and aggressiveness was measured in the brain. Late juveniles were subjected to two dyadic dominance tests (n = 34, 17 pairs), related to feeding and territoriality and one group test (n = 24, 4 groups of 6 fish). Sole feeding first were categorized as dominant and sole feeding second or not feeding as subordinate. Three social behaviours (i. “Resting the head” on another fish, ii. “Approaching” another fish, iii. “Swimming above another” fish) were associated with dominance of feeding. Two other variables (i. Total time occupying the preferred area during the last 2 hours of the 24 h test, ii. Organisms occupying the preferred area when the test ended) were representative of dominance in the place preference test. In all tests, dominant fish compared to subordinate fish displayed a significantly higher number of the behaviours
“Rest the head” and “Approaches”. Moreover, dominant sole dominated the sand at the end of the test, and in the group test dominated the area close to the feed delivery point before feed was delivered. The mRNA abundance of the selected mRNAs related to neurogenesis (nrd2) and neuroplasticity (c-fos) in dominant sole compared to subordinate were significantly different. This is the first study to characterise dominance categories with associated behaviours and mRNA abundance in Senegalese sole and provides tools to study dominance related problems in feeding and reproduction in aquaculture.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
Anglès
Matèries (CDU)
639 - Caça. Pesca. Piscicultura
Pàgines
22
Publicat per
Public Library of Science
Publicat a
PLoS ONE
Citació
Fatsini, Elvira, Sonia Rey, Zohar Ibarra-Zatarain, Simon Mackenzie, and Neil J. Duncan. 2017. "Dominance Behaviour In A Non-Aggressive Flatfish, Senegalese Sole (Solea Senegalensis) And Brain Mrna Abundance Of Selected Transcripts". PLOS ONE 12 (9): e0184283. doi:10.1371/journal.pone.0184283.
Número de l'acord de la subvenció
INIA-FEDER/Programa Estatal de I+D+I orientada a los retos de la sociedad/RTA2014-00048/ES/Gestión de los reproductores basada en su comportamiento para aumentar la producción de gametos y el éxito reproductivo en el lenguado senegalés (Solea senegalensis) cultivado (F1) y salvaje/
INIA-FEDER/Programa Nacional de Proyectos de Investigación Fundamental/RTA2011-00050-00-00/ES/Caracterización de los perfiles de comportamiento (estilos de afrontamiento al estrés) y su impacto en el éxito reproductivo del lenguado senegalés (Solea senegalensis)/
Programa
Aqüicultura
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