調(diào)控物種互動的特征在很大程度是遺傳的,,所以認(rèn)為親緣關(guān)系較近的生物比親緣關(guān)系較遠(yuǎn)的生物更有可能有相似的生態(tài)互動似乎是符合邏輯的,。
生物谷啟用新域名 www.bioon.net
有關(guān)這一關(guān)系已經(jīng)進(jìn)行的研究工作很少,,而且少量這樣的研究也往往關(guān)注專門化的生物,,如寄生蟲或食草昆蟲,。對包括專門化生物和非專門化生物,、無細(xì)胞生物,、單細(xì)胞生物和多細(xì)胞生物在內(nèi)的各種不同互動類群(包括所有互動類型)中的宿主利用方式的演化所做的一項(xiàng) 新的分析,支持認(rèn)為所有物種的生態(tài)互動都具有遺傳性(即在演化過程中被保留了下來)這樣一個(gè)觀點(diǎn),。
同樣規(guī)則似乎也推動著大多數(shù)生態(tài)互動的演化,,并且對于地球生物多樣性的組織也有很大貢獻(xiàn)。(生物谷Bioon.net)
生物谷推薦原文出處:
Nature doi:10.1038/nature09113
Ecological interactions are evolutionarily conserved across the entire tree of life
José M. Gómez, Miguel Verdú & Francisco Perfectti
Ecological interactions are crucial to understanding both the ecology and the evolution of organisms1, 2. Because the phenotypic traits regulating species interactions are largely a legacy of their ancestors, it is widely assumed that ecological interactions are phylogenetically conserved, with closely related species interacting with similar partners2. However, the existing empirical evidence is inadequate to appropriately evaluate the hypothesis of phylogenetic conservatism in ecological interactions, because it is both ecologically and taxonomically biased. In fact, most studies on the evolution of ecological interactions have focused on specialized organisms, such as some parasites or insect herbivores3, 4, 5, 6, 7, belonging to a limited subset of the overall tree of life. Here we study the evolution of host use in a large and diverse group of interactions comprising both specialist and generalist acellular, unicellular and multicellular organisms. We show that, as previously found for specialized interactions, generalized interactions can be evolutionarily conserved. Significant phylogenetic conservatism of interaction patterns was equally likely to occur in symbiotic and non-symbiotic interactions, as well as in mutualistic and antagonistic interactions. Host-use differentiation among species was higher in phylogenetically conserved clades, irrespective of their generalization degree and taxonomic position within the tree of life. Our findings strongly suggest a shared pattern in the organization of biological systems through evolutionary time, mediated by marked conservatism of ecological interactions among taxa.