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Olfactory receptor and circuit evolution promote host specialization 期刊论文
NATURE, 2020
作者:  Chen, Tse-An;  Chuu, Chih-Piao;  Tseng, Chien-Chih;  Wen, Chao-Kai;  Wong, H. -S. Philip;  Pan, Shuangyuan;  Li, Rongtan;  Chao, Tzu-Ang;  Chueh, Wei-Chen;  Zhang, Yanfeng;  Fu, Qiang;  Yakobson, Boris I.;  Chang, Wen-Hao;  Li, Lain-Jong
收藏  |  浏览/下载:8/0  |  提交时间:2020/07/03

The evolution of animal behaviour is poorly understood(1,2). Despite numerous correlations between interspecific divergence in behaviour and nervous system structure and function, demonstrations of the genetic basis of these behavioural differences remain rare(3-5). Here we develop a neurogenetic model, Drosophila sechellia, a species that displays marked differences in behaviour compared to its close cousin Drosophila melanogaster(6,7), which are linked to its extreme specialization on noni fruit (Morinda citrifolia)(8-16). Using calcium imaging, we identify olfactory pathways in D. sechellia that detect volatiles emitted by the noni host. Our mutational analysis indicates roles for different olfactory receptors in long- and short-range attraction to noni, and our cross-species allele-transfer experiments demonstrate that the tuning of one of these receptors is important for species-specific host-seeking. We identify the molecular determinants of this functional change, and characterize their evolutionary origin and behavioural importance. We perform circuit tracing in the D. sechellia brain, and find that receptor adaptations are accompanied by increased sensory pooling onto interneurons as well as species-specific central projection patterns. This work reveals an accumulation of molecular, physiological and anatomical traits that are linked to behavioural divergence between species, and defines a model for investigating speciation and the evolution of the nervous system.


A neurogenetic model, Drosophila sechellia-a relative of Drosophila melanogaster that has developed an extreme specialization for a single host plant-sheds light on the evolution of interspecific differences in behaviour.


  
Size and density mediate transitions between competition and facilitation 期刊论文
ECOLOGY LETTERS, 2019, 22 (11) : 1879-1888
作者:  Cameron, Hayley;  Coulson, Tim;  Marshall, Dustin J.
收藏  |  浏览/下载:4/0  |  提交时间:2019/11/27
Competitive hierarchy  integral projection model  interspecific interactions  life history  population dynamics  response surface  trait variation  
Predicting coral community recovery using multi-species population dynamics models 期刊论文
ECOLOGY LETTERS, 2019, 22 (4) : 605-615
作者:  Kayal, Mohsen;  Lenihan, Hunter S.;  Brooks, Andrew J.;  Holbrook, Sally J.;  Schmitt, Russell J.;  Kendall, Bruce E.
收藏  |  浏览/下载:5/0  |  提交时间:2019/04/09
Community recovery  coral reefs  density dependence  ecosystem function  elasticity analysis  integral projection model  life-history traits  multi-species demographic model  reassembly  size structure  
Twenty-first-century climate change impacts on marine animal biomass and ecosystem structure across ocean basins 期刊论文
GLOBAL CHANGE BIOLOGY, 2019, 25 (2) : 459-472
作者:  Bryndum-Buchholz, Andrea;  Tittensor, Derek P.;  Blanchard, Julia L.;  Cheung, William W. L.;  Coll, Marta;  Galbraith, Eric D.;  Jennings, Simon;  Maury, Olivier;  Lotze, Heike K.
收藏  |  浏览/下载:12/0  |  提交时间:2019/04/09
climate change  ensemble modeling  future projection  marine animal biomass  marine ecosystem models  model intercomparison  ocean basins  uncertainty  
Size-by-environment interactions: a neglected dimension of species' responses to environmental variation 期刊论文
ECOLOGY LETTERS, 2018, 21 (12) : 1757-1770
作者:  Tredennick, Andrew T.;  Teller, Brittany J.;  Adler, Peter B.;  Hooker, Giles;  Ellner, Stephen P.
收藏  |  浏览/下载:6/0  |  提交时间:2019/04/09
demographic buffering  demography  environmental variability  individual heterogeneity  individual size  integral projection model  population model  
Predicting coral community recovery using multi-species population dynamics models 期刊论文
ECOLOGY LETTERS, 2018, 21 (12) : 1790-1799
作者:  Kayal, Mohsen;  Lenihan, Hunter S.;  Brooks, Andrew J.;  Holbrook, Sally J.;  Schmitt, Russell J.;  Kendall, Bruce E.
收藏  |  浏览/下载:8/0  |  提交时间:2019/04/09
Community recovery  coral reefs  density dependence  ecosystem function  elasticity analysis  integral projection model  life-history traits  multi-species demographic model  reassembly  size structure  
Warming springs and habitat alteration interact to impact timing of breeding and population dynamics in a migratory bird 期刊论文
GLOBAL CHANGE BIOLOGY, 2018, 24 (11) : 5292-5303
作者:  Kentie, Rosemarie;  Coulson, Tim;  Hooijmeijer, Jos C. E. W.;  Howison, Ruth A.;  Loonstra, A. H. Jelle;  Verhoeven, Mo A.;  Both, Christiaan;  Piersma, Theunis
收藏  |  浏览/下载:14/0  |  提交时间:2019/04/09
agricultural intensification  climate change  Integral Projection Model  phenology  shorebirds  source and sink  
Native insect herbivory overwhelms context dependence to limit complex invasion dynamics of exotic weeds 期刊论文
ECOLOGY LETTERS, 2017, 20 (11)
作者:  Schultz, Emily L.;  Eckberg, James O.;  Berg, Sergey S.;  Louda, Svata M.;  Miller, Tom E. X.
收藏  |  浏览/下载:14/0  |  提交时间:2019/04/09
Cirsium vulgare  demography  density-dependence  environmental context  hierarchical Bayesian model  insect herbivory  integral projection models  invasive species  population dynamics