Boldness is related to the development of the cephalic crest in the male of the river blenny Salariafluviatilis （Asso, 1801）
Boldness is related to the development of the cephalic crest in the male of the river blenny Salariafluviatilis （Asso, 1801）作者机构：Department of Animal Biology Faculty of Biology University of Barcelona Avda. Diagonal 643 08028 Barcelona CataloniaSpain
出 版 物：《Current Zoology》 (动物学报（英文版）)
年 卷 期：2014年第60卷第3期
页 面：373-380页
核心收录：
学科分类：090801[农学-水产养殖] 050302[文学-传播学] 05[文学] 0908[农学-水产] 09[农学] 0503[文学-新闻传播学]
基 金：Generalitat de Catalunya [2009 SGR 43]
主 题：Animal personality Behavioural syndromes Freshwater blenny Male reproductive success Shyness
摘 要：Boldness is defined as the tendency of an individual to take risks when exposed to novel objects or situations. The main aim of this work was to dilucidate if boldness was related to the development of the secondary sexual traits （SSTs） in the male of the fiver blenny Salariafluviatilis, a freshwater fish which takes care of eggs. As a second objective SSTs effect on pa rental status adoption was also be explored. Wild young fish were caught in the Segre River （Ebro basin） in November 2010. Fish were kept in five aquaria in groups of eight males and eight females with artificial nests. Boldness （boldness score and hesitancy） of males （initially with little SSTs development） was tested as the time required to exit a refuge when exposed to a new environ ment. Fish were mantained in the same aquaria for several months, and males＇ SSTs development and reproductive behaviour were monitored. Boldness score was negatively associated to cephalic crest development. Hesitancy was negatively related to male length and was also influenced by the interaction between male length and cephalic crest. Parental status acquisition was positively related to the male＇s length, marginally related to anal gland development, and nonrelated to cephalic crest. These re sults suggest an intrasexual role of the crest as an informative trait of boldness （honest signal） which might not necessarily be chosen by the females. It is also discussed that correlational selection could be responsible for linking boldness and growth rate in this species. Sexual selection, in addition to having directed the evolution of secondary sexual traits, might have favored certain personality traits （e.g. boldness） associated with the achievement of a larger body length .
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