Novel brain gene-expression patterns are associated with a novel predaceous behaviour in tadpoles
Novel brain gene-expression patterns are associated with a novel predaceous behaviour in tadpoles
复制标题
新的大脑基因表达模式与蝌蚪的新捕食行为有关
DOI:
10.1098/rspb.2021.0079
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Ledon-Rettig, Cris C.
中科院分区:
文献类型:
--
作者:
Ledon-Rettig, Cris C.
Novel behaviours can spur evolutionary change and sometimes even precede morphological innovation, but the evolutionary and developmental contexts for their origins can be elusive. One proposed mechanism to generate behavioural innovation is a shift in the developmental timing of gene-expression patterns underlying an ancestral behaviour, or molecular heterochrony. Alternatively, novel suites of gene expression, which could provide new contexts for signalling pathways with conserved behavioural functions, could promote novel behavioural variation. To determine the relative contributions of these alternatives to behavioural innovation, I used a species of spadefoot toad,Spea bombifrons. Based on environmental cues,Spealarvae develop as either of two morphs: ‘omnivores' that, like their ancestors, feed on detritus, or ‘carnivores' that are predaceous and cannibalistic. Because all anuran larvae undergo a natural transition to obligate carnivory during metamorphosis, it has been proposed that the novel, predaceous behaviour inSpealarvae represents the accelerated activation of gene networks influencing post-metamorphic behaviours. Based on comparisons of brain transcriptional profiles, my results reject widespread heterochrony as a mechanism promoting the expression of predaceous larval behaviour. They instead suggest that the evolution of this trait relied on novel patterns of gene expression that include components of pathways with conserved behavioural functions.
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影响因子:
2.6
作者:
Walsh JT;Signorotti L;Linksvayer TA;d'Ettorre P
通讯作者:
d'Ettorre P
影响因子:
2.9
作者:
Cris C. Ledón;D. Pfennig
通讯作者:
D. Pfennig
影响因子:
2.5
作者:
J. Gariépy;Daniel J. Bauer;R. Cairns
通讯作者:
R. Cairns
影响因子:
23.8
作者:
A. Toth;Sandra M. Rehan
通讯作者:
Sandra M. Rehan
DOI:
10.1098/rspb.1999.0604
发表时间:
1999
期刊:
Proceedings of the Royal Society of London. Series B: Biological Sciences
影响因子:
--
作者:
D. Pfennig
通讯作者:
D. Pfennig