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Wang, Xin; Shuying, Duan; Geng, Baoyin; Cui, Jinzhong; Yang, Yong

doi:10.1186/1471-2148-7-14

Cited by 73 publications

(35 citation statements)

References 37 publications

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“…Hemisphere floras in both the Triassic and the Lower Jurassic (Wcislo-Luraniec, 1992;Wang et al, 2007;Pott et al, 2007;Van Konijnenburg-Van Cittert, 2010), where it is associated with distinct kinds of foliage and ovulate organs (Zhou, 2009). Firstly regarded as a conifer related structure, they were later linked to an immature male reproductive structure of Baiera münsteriana (Weber, 1968).…”

Section: Accepted Manuscriptmentioning

confidence: 98%

First record of Ginkgo-related fertile organs (Hamshawvia, Stachyopitys) and leaves (Baiera, Sphenobaiera) in the Triassic of Brazil, Santa Maria formation

Barboni

Dutra

2015

Journal of South American Earth Sciences

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Section: Accepted Manuscriptmentioning

confidence: 98%

First record of Ginkgo-related fertile organs (Hamshawvia, Stachyopitys) and leaves (Baiera, Sphenobaiera) in the Triassic of Brazil, Santa Maria formation

Barboni

Dutra

2015

Journal of South American Earth Sciences

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“…The spatial distribution of the various Tropheus lineages shifted during lake level fluctuations in the Pleistocene [53], fragmenting populations during high stands, or forcing them into secondary contact during low stands [54,55]. These fluctuations strongly influenced the diversification of Tropheus populations [55,56]. Obviously, the same fluctuations might also affect communities of fish parasites.…”

Section: Introductionmentioning

confidence: 99%

Contrasting parasite communities among allopatric colour morphs of the Lake Tanganyika cichlid Tropheus

et al. 2013

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BackgroundAdaptation to different ecological environments is thought to drive ecological speciation. This phenomenon culminates in the radiations of cichlid fishes in the African Great Lakes. Multiple characteristic traits of cichlids, targeted by natural or sexual selection, are considered among the driving factors of these radiations. Parasites and pathogens have been suggested to initiate or accelerate speciation by triggering both natural and sexual selection. Three prerequisites for parasite-driven speciation can be inferred from ecological speciation theory. The first prerequisite is that different populations experience divergent infection levels. The second prerequisite is that these infection levels cause divergent selection and facilitate adaptive divergence. The third prerequisite is that parasite-driven adaptive divergence facilitates the evolution of reproductive isolation. Here we investigate the first and the second prerequisite in allopatric chromatically differentiated lineages of the rock-dwelling cichlid Tropheus spp. from southern Lake Tanganyika (Central Africa). Macroparasite communities were screened in eight populations belonging to five different colour morphs.ResultsParasite communities were mainly composed of acanthocephalans, nematodes, monogeneans, copepods, branchiurans, and digeneans. In two consecutive years (2011 and 2012), we observed significant variation across populations for infection with acanthocephalans, nematodes, monogeneans of the genera Gyrodactylus and Cichlidogyrus, and the copepod Ergasilus spp. Overall, parasite community composition differed significantly between populations of different colour morphs. Differences in parasite community composition were stable in time. The genetic structure of Tropheus populations was strong and showed a significant isolation-by-distance pattern, confirming that spatial isolation is limiting host dispersal. Correlations between parasite community composition and Tropheus genetic differentiation were not significant, suggesting that host dispersal does not influence parasite community diversification.ConclusionsSubject to alternating episodes of isolation and secondary contact because of lake level fluctuations, Tropheus colour morphs are believed to accumulate and maintain genetic differentiation through a combination of vicariance, philopatric behaviour and mate discrimination. Provided that the observed contrasts in parasitism facilitate adaptive divergence among populations in allopatry (which is the current situation), and promote the evolution of reproductive isolation during episodes of sympatry, parasites might facilitate speciation in this genus.

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“…Both kinds of leaves show a great variability concerning lobing as was also the case for several fossil ginkgoalean taxa (e.g. Kirchner & Kronijnenburg-van Cittert 1994;TU et al 2003;Kvacek et al 2005;Zhiyan, 1991;Zhiyan & Xiangwu 2006;Wang et al 2007;Wu et al 2007;Zhou et al 2007;Quan et al 2010). …”

Section: Leaf Morphology and Anatomymentioning

confidence: 95%

“…But in previous times Ginkgoaceae had a much larger diversity (e.g. Tu et al 2003;Kvacek et al 2005;Taylor et al 2009;Zhiyan, 1991;Zhiyan & Xiangwu 2006;Wang et al 2007;Wu et al 2007;Zhou et al 2007;Quan et al 2010). G. biloba is restricted to the western mountains of Tian Mu (Zhejiang province, East China) and perhaps Guizhou and Guyngxi (del Tredici 2004).…”

mentioning

confidence: 96%

Morphology, anatomy and vasculature in leaves of Ginkgo biloba L. (Ginkgoaceae, Ginkgoales) under functional and evolutionary aspects

Dörken

2013

Feddes Repertorium

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Morphology and anatomy of leaves as well as germination in Ginkgo biloba were studied and compared to the situation in other gymnosperms. The results show that a long-shoot leaf will be replaced almost perfectly by the total leaf area of a single short-shoot, a feature which can be found in nearly all deciduous angiospermous, but is absent in all other deciduous gymnosperms. The results of the anatomical investigations of cotyledons and their comparison with the situation in other gymnosperm groups e.g. Araucariaceae, Pinacaea and Taxaceae demonstrate that the recent hypogeal germination of Ginkgo biloba might represent a feature derived from an epigeal ancestor with cotyledons taking part in photosynthesis and respiration. The cotyledons of Ginkgo biloba, however, have only a storage and haustorial function today, but they are still rich in chlorophyll and stomata are developed all over both leaf sides, despite the fact that they are never exposed to light.

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Cited by 73 publications

References 37 publications

First record of Ginkgo-related fertile organs (Hamshawvia, Stachyopitys) and leaves (Baiera, Sphenobaiera) in the Triassic of Brazil, Santa Maria formation

First record of Ginkgo-related fertile organs (Hamshawvia, Stachyopitys) and leaves (Baiera, Sphenobaiera) in the Triassic of Brazil, Santa Maria formation

Contrasting parasite communities among allopatric colour morphs of the Lake Tanganyika cichlid Tropheus

Morphology, anatomy and vasculature in leaves of Ginkgo biloba L. (Ginkgoaceae, Ginkgoales) under functional and evolutionary aspects

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