Dataset Information

Epitypification of the Central African Cantharellusdensifolius and C.luteopunctatus allows for the recognition of two additional species.

ABSTRACT: Cantharellusdensifolius and C.luteopunctatus are epitypified on the basis of recently collected specimens from the Central African rain forest that correspond in every way to their respective original descriptions. Sequences obtained from these new collections demonstrate that both epitypes represent distinct species that belong in different subclades of Cantharellussubg.Rubrinus. Previously, the name C.densifolius has been consistently misapplied to more or less similar species from the African woodland area, including C.densilamellatus sp. nov. which is described here, In addition, C.tomentosoides sp. nov., a rain forest species that is easily confused with C.densifolius, is described.

SUBMITTER: Buyck B

PROVIDER: S-EPMC6477822 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Epitypification of the Central African Cantharellusdensifolius and C.luteopunctatus allows for the recognition of two additional species.

Buyck Bart B W Henkel Terry T Hofstetter Valérie V

MycoKeys 20190327

Cantharellusdensifolius and C.luteopunctatus are epitypified on the basis of recently collected specimens from the Central African rain forest that correspond in every way to their respective original descriptions. Sequences obtained from these new collections demonstrate that both epitypes represent distinct species that belong in different subclades of Cantharellussubg.Rubrinus. Previously, the name C.densifolius has been consistently misapplied to more or less similar spe ...[more]

PMID: 31043852

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Project description:BACKGROUND:Climatic variation and geologic change both play significant roles in shaping species distributions, thus affecting their evolutionary history. In Sahara-Sahel, climatic oscillations shifted the desert extent during the Pliocene-Pleistocene interval, triggering the diversification of several species. Here, we investigated how these biogeographical and ecological events have shaped patterns of genetic diversity and divergence in African Jerboas, desert specialist rodents. We focused on two sister and cryptic species, Jaculus jaculus and J. hirtipes, where we (1) evaluated their genetic differentiation, (2) reconstructed their evolutionary and demographic history; (3) tested the level of gene flow between them, and (4) assessed their ecological niche divergence. RESULTS:The analyses based on 231 individuals sampled throughout North Africa, 8 sequence fragments (one mitochondrial and seven single copy nuclear DNA, including two candidate genes for fur coloration: MC1R and Agouti), 6 microsatellite markers and ecological modelling revealed: (1) two distinct genetic lineages with overlapping distributions, in agreement with their classification as different species, J. jaculus and J. hirtipes, with (2) low levels of gene flow and strong species divergence, (3) high haplotypic diversity without evident geographic structure within species, and (4) a low level of large-scale ecological divergence between the two taxa, suggesting species micro-habitat specialization. CONCLUSIONS:Overall, our results suggest a speciation event that occurred during the Pliocene-Pleistocene transition. The contemporary distribution of genetic variation suggests ongoing population expansions. Despite the largely overlapping distributions at a macrogeographic scale, our genetic results suggest that the two species remain reproductively isolated, as only negligible levels of gene flow were observed. The overlapping ecological preferences at a macro-geographic scale and the ecological divergence at the micro-habitat scale suggest that local adaptation may have played a crucial role in the speciation process of these species.

Dataset Information

Epitypification of the Central African Cantharellusdensifolius and C.luteopunctatus allows for the recognition of two additional species.

Publications

Epitypification of the Central African <i>Cantharellusdensifolius</i> and <i>C.luteopunctatus</i> allows for the recognition of two additional species.

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