Phylogenetic and Biogeographic Analysis in Myrcia Sect. Myrcia (Myrcia s.l., Myrtaceae) with Focus on Highly Polyphyletic Myrcia splendens

The suborder Ingolfiellidea currently consists of 39 named species. An historical overview is presented and phylogenetic and biogeographic analyses are made. The result of the phylogenetic analysis suggests the definition of two new genera within an African freshwater group, namely Paraleleupia n. gen. and Proleleupia n. gen. Re-examination of a supposedly Italian relict species, Metaingolfiella mirabilis, with the aid of SEM techniques reveals a half-fusion of the head region with the first pereionite. The issue of the function of the ‘eyelobe’ is addressed and an explanation presented after examining with SEM such lobes in different species. Furthermore, additional descriptions are given based on the type-material of Metaingolfiella mirabilis, Trogloleleupia eggerti, Trogloleleupia leleupi, Ingolfiella littoralis, I. tabularis, I. margaritae, I. quadridentata, and I. abyssi. An attempt to relate the geographic distribution and ecological characteristics to the phylogeny of the Ingolfiellidea results in a paleogeographic scenario that points to a freshwater subterranean origin for the group that dates from at least Triassic times.

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Plastid phylogenomics and biogeographic analysis support a trans-Tethyan origin and rapid early radiation of Cornales in the Mid-Cretaceous

Molecular Phylogenetics and Evolution ◽

10.1016/j.ympev.2019.106601 ◽

2019 ◽

Vol 140 ◽

pp. 106601 ◽

Cited By ~ 8

Author(s):

Chao-Nan Fu ◽

Zhi-Qiong Mo ◽

Jun-Bo Yang ◽

Xue-Jun Ge ◽

De-Zhu Li ◽

...

Keyword(s):

Early Radiation ◽

Biogeographic Analysis

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Systematics and biogeography of Sternarchellini (Gymnotiformes: Apteronotidae): Diversification of electric fishes in large Amazonian rivers

Neotropical Ichthyology ◽

10.1590/1982-0224-20130159 ◽

2014 ◽

Vol 12 (3) ◽

pp. 565-584 ◽

Cited By ~ 12

Author(s):

Stephen J. Ivanyisky III ◽

James S. Albert

Keyword(s):

Adaptive Evolution ◽

Large Scale ◽

Electric Fish ◽

Morphological Characters ◽

Species Assemblages ◽

River Channels ◽

Capture Event ◽

Adult Body ◽

Body Sizes ◽

Biogeographic Analysis

The Sternarchellini (Gymnotiformes, Apteronotidae) is a clade of 10 electric fish species that inhabit deep river channels of the Amazon and Orinoco basins, attain moderate adult body sizes (15-50 cm TL), and have a predatory life style. Here we trace the evolutionary origin and diversification of Sternarchellini using standard phylogenetic and biogeographic procedures and a dataset of 70 morphological characters. The main results are: 1) the genus Sternarchellaincludes both species currently assigned to the genus Magosternarchus; and 2) neither of the multi-species assemblages of Sternarchellini in the Amazon and Orinoco basins are monophyletic. Historical biogeographic analysis suggests that sternarchelline evolution was linked to the large-scale river capture event that formed the modern Amazon and Orinoco basins, i.e. the Late Miocene rise of the Vaupes structural arch and concomitant breaching of the Purus structural arch. This event is hypothesized to have contributed to formation of the modern sternarchelline species, and to the formation of the modern basin-wide sternarchelline species assemblages. The results indicate that cladogenesis (speciation) and anagenesis (adaptive evolution) were decoupled processes in the evolution of Sternarchellini.

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