Multilocus phylogenetic analysis helps to untangle the taxonomic puzzle of chubs (genus Squalius: Cypriniformes: Actinopteri) in the Adriatic basin of Croatia and Bosnia and Herzegovina

2019 ◽  
Vol 189 (3) ◽  
pp. 953-974
Author(s):  
Ivana Buj ◽  
Zoran Marčić ◽  
Kristina Čavlović ◽  
Marko Ćaleta ◽  
Pero Tutman ◽  
...  
Keyword(s):  
Bosnia And Herzegovina ◽  
Middle Miocene ◽  
Mitochondrial Gene ◽  
Phylogenetic Reconstruction ◽  
Taxonomic Status ◽  
Mediterranean Area ◽  
Freshwater Habitats ◽  
Recombination Activating Gene ◽  
Adriatic Basin ◽  
High Diversity

Abstract Fish of the genus Squalius inhabit various freshwater habitats across Europe and Asia, with a particularly high diversity in the Mediterranean area, but the taxonomic status of many populations is still a matter of debate. This study aims to resolve the taxonomic uncertainties of chubs distributed in the Adriatic basin of Croatia and Bosnia and Herzegovina. Phylogenetic reconstruction based on the mitochondrial gene for cytochrome b and two nuclear genes, the recombination activating gene 1 and the rhodopsin gene, reveal high diversity of chubs in the investigated area. Two evolutionary independent groups are revealed: the first comprising the species Squalius illyricus, S. microlepis, S. svallize, S. tenellus and S. zrmanjae, and a second group corresponding with S. squalus. Genetic distinctiveness of species belonging to different groups is high due to their divergence that began in the Middle Miocene. In addition to allopatric speciation as the main force of divergence of Adriatic Squalius species, several instances of natural hybridizations were detected, contributing to the observed diversity. A comparison of phylogenetic scenarios using Bayesian factors corroborated the molecular basis for recognition of six Squalius species in the Adriatic basin, while Squalius janae is confirmed to be a junior synonym of S. squalus.

scholarly journals Systematics and Taxonomy of Tonatia saurophila Koopman & Williams, 1951 (Chiroptera, Phyllostomidae)

ZooKeys ◽  
2020 ◽  
Vol 915 ◽  
pp. 59-86 ◽  
Author(s):  
Mateo Basantes ◽  
Nicolás Tinoco ◽  
Paúl M. Velazco ◽  
Melinda J. Hofmann ◽  
Miguel E. Rodríguez-Posada ◽  
...  
Keyword(s):  
Amazon Basin ◽  
Mitochondrial Gene ◽  
Phylogenetic Reconstruction ◽  
Taxonomic Status ◽  
Northeastern Brazil ◽  
The Andes ◽  
Morphometric Analyses ◽  
Historical Role ◽  
The Guianas

The Stripe-headed Round-eared bat, Tonatia saurophila, includes three subspecies: Tonatia saurophila saurophila (known only from subfossil records in Jamaica), Tonatia saurophila bakeri (distributed from southeastern Mexico to northern Colombia, Venezuela west and north of the Cordillera de Mérida, and northwestern Ecuador), and Tonatia saurophila maresi (distributed in Venezuela east and south of the Cordillera de Mérida, the Guianas, Trinidad and Tobago, northeastern Brazil, and along the upper Amazon basin in Colombia, Ecuador, Peru, and Bolivia). The last two subspecies are an attractive example to test predictions about the historical role of the Andes in mammalian diversification. Based on morphological descriptions, morphometric analyses, and phylogenetic reconstruction using the mitochondrial gene Cyt-b and the nuclear exon RAG2, this study evaluates the intraspecific relationships within Tonatia saurophila and the taxonomic status of the taxon. The three subspecies of T. saurophila are recognizable as full species: Tonatia bakeri, Tonatia maresi, and Tonatia saurophila. The latter is restricted to its type locality and possibly is extinct. Tonatia bakeri, in addition to being larger than T. maresi, is morphologically distinguishable by possessing an acute apex at the posterior edge of the skull, a well-developed clinoid process, and relatively robust mandibular condyles, and by lacking a diastema between the canine and the first lower premolar. The genetic distance between T. bakeri and T. maresi is 7.65%.

Species relationships in the dasyurid marsupial genus Pseudantechinus (Marsupialia : Dasyuridae): a re-examination of the taxonomic status of Pseudantechinus roryi

2017 ◽  
Vol 65 (4) ◽  
pp. 240 ◽  
Author(s):  
L. S. Umbrello ◽  
P. A. Woolley ◽  
M. Westerman
Keyword(s):  
Dna Sequences ◽  
Isolation By Distance ◽  
Phylogenetic Analyses ◽  
Mitochondrial Gene ◽  
Taxonomic Status ◽  
Museum Collections ◽  
Species Relationships ◽  
Type Specimens ◽  
Network Analyses ◽  
The Status

The status of Pseudantechinus roryi relative to its congeners has been determined from DNA sequences obtained from both nuclear and mitochondrial gene loci. Although all other recognised species of Pseudantechinus form reciprocally monophyletic lineages in phylogenetic analyses, individuals identified in museum collections as Ps. roryi (including type specimens) were indistinguishable from those identified as Ps. macdonnellensis. Ps. roryi is thus considered to be a synonym of Ps. macdonnellensis. Neighbour-joining network analyses failed to reveal any clear biogeographic differences between populations of Ps. macdonnellensis other than some evidence of isolation by distance.

scholarly journals Small mammals from the opencast lignite mine Gračanica (Bugojno, middle Miocene), Bosnia and Herzegovina

2019 ◽  
Vol 100 (2) ◽  
pp. 295-300 ◽  
Author(s):  
Wilma Wessels ◽  
Hans de Bruijn ◽  
Zoran Marković ◽  
Miloš Milivojević
Keyword(s):  
Bosnia And Herzegovina ◽  
Small Mammals ◽  
Middle Miocene ◽  
Lignite Mine

Re-examination of the taxonomy of the Macrobrachium australiense Holthuis (Decapoda : Palaemonidae) species-complex: molecular evidence for a single species

2004 ◽  
Vol 18 (2) ◽  
pp. 227 ◽  
Author(s):  
Nicholas P. Murphy ◽  
John W. Short ◽  
Christopher M. Austin
Keyword(s):  
Genetic Relationships ◽  
Mitochondrial Gene ◽  
Taxonomic Status ◽  
Single Species ◽  
Gene Region ◽  
Molecular Evidence ◽  
Morphological Divergence ◽  
Separate Species ◽  
North West ◽  
North East

The freshwater shrimp Macrobrachium australiense is distributed throughout the majority of inland, north-west, north-east and eastern drainages. Owing to the large amount of morphological divergence, both between and within catchments, this species has proven to be taxonomically difficult and, until recently, consisted of three separate species, each with subsequent subspecies. This study uses nucleotide sequences from the 16S rRNA mitochondrial gene region to investigate the genetic relationships between populations and confirm the taxonomic status of M. australiense. The results from sequencing an approximately 450-bp fragment from this gene region from M. australiense sampled from 12 locations across inland, eastern and northern Australia identified very little variation. The variation found between 16S M. australiense haplotypes is much less than that found between Macrobrachium species, indicating that it is in fact a single species. The results are concordant with a recent morphological revision of Australian species in which nominal taxa of the M. australiense complex were synonymised.

Taxonomic review of two fossil crocodylians from the Cenozoic of South America and its implications for the crocodylian fauna of the continent

Zootaxa ◽  
2019 ◽  
Vol 4656 (3) ◽  
pp. 475-486
Author(s):  
GIOVANNE M. CIDADE ◽  
DANIEL FORTIER ◽  
ASCANIO DANIEL RINCÓN ◽  
ANNIE SCHMALTZ HSIOU
Keyword(s):  
South America ◽  
Fossil Record ◽  
Middle Miocene ◽  
Taxonomic Status ◽  
Junior Synonym ◽  
Diverse Group ◽  
Taxonomic Review ◽  
Nomen Dubium ◽  
Extant Species ◽  
The World

The crocodylomorph fauna of the Cenozoic of South America is one of the richest and most diverse in the world. The most diverse group within that fauna is Alligatoroidea, with nearly all of its species belonging to the Caimaninae clade. Many of the fossil alligatoroid species from the Cenozoic of South America were proposed based on very incomplete remains, and as a result their validity requires revision. Two such species are Balanerodus logimus Langston, 1965, from the middle Miocene of Colombia and Peru, and Caiman venezuelensis Fortier & Rincón, 2012, from the Pliocene-Pleistocene of Venezuela. This study has performed a thorough review of the taxonomic status of these two alligatoroid species, concluding that B. logimus is a nomen dubium and that Ca. venezuelensis is a junior synonym of the extant species Ca. crocodilus. This review offers a significantly more accurate scenario for alligatoroid diversity in the Cenozoic of South America in different epochs such as the Miocene and Pleistocene. Additionally, the record of Ca. crocodilus from the Pleistocene of Venezuela is the first fossil record that can be assigned to this species. 

Genetic diversity, species phylogeny and historical biogeography of the Aquarius paludum group (Heteroptera: Gerridae)

2003 ◽  
Vol 34 (3) ◽  
pp. 313-327 ◽  
Author(s):  
Herbert Zettel ◽  
Jakob Damgaard
Keyword(s):  
Genetic Diversity ◽  
Sequence Data ◽  
Mitochondrial Gene ◽  
Taxonomic Status ◽  
Species Group ◽  
Genetic Distances ◽  
The Philippines ◽  
Disjunct Distribution ◽  
Gene Encoding ◽  
Vicariance Event

AbstractWe investigated genetic diversity and phylogeny of all water strider species assigned to the Aquarius paludum species group on basis of 425 bp DNA sequence data from the mitochondrial gene encoding cytochrome oxidase subunit I (COI). Parsimony analyses and genetic distances confirmed the taxonomic status of the two recently described species Aquarius lili Polhemus & Polhemus, 1994 from Timor and A. philippinensis Zettel & Ruiz, 2003 from the Philippines as being separate from the widespread Oriental A. adelaidis (Dohrn, 1860). Molecular clock estimates suggest that the disjunct zoogeographical pattern among the three species is due to a Pliocene/Pleistocene long-range dispersal, rather than a Mesozoic vicariance event as previously suggested. However, when we superimposed the disjunct distribution of Southern Hemisphere representatives of the paludum-group onto their phylogenetic relationship, the pattern indicated vicariance events following the break-up of Gondwana.

scholarly journals A late Burdigalian bathyal mollusc fauna from the Vienna Basin (Slovakia)

2011 ◽  
Vol 62 (3) ◽  
pp. 211-231 ◽  
Author(s):  
Mathias Harzhauser ◽  
Oleg Mandic ◽  
Jan Schlögl
Keyword(s):  
New Species ◽  
Deep Water ◽  
Middle Miocene ◽  
Mediterranean Area ◽  
First Record ◽  
Early Miocene ◽  
Vienna Basin ◽  
Poor Knowledge ◽  
Central Paratethys ◽  
Aquitaine Basin

A late Burdigalian bathyal mollusc fauna from the Vienna Basin (Slovakia)This is the first record of a bathyal mollusc fauna from the late Early Miocene of the Central Paratethys. The assemblage shows clear affinities to coeval faunas of the Turin Hills in the Mediterranean area and the Aquitaine Basin in France. The overall biostratigraphic value of the assemblage is hard to estimate due to the general very poor knowledge of Miocene bathyal faunas. Several species, however, are known from deep water deposits of the Middle Miocene Badenian stage as well. This implies Early Miocene roots of parts of the Middle Miocene deep water fauna and suggests a low turnover for bathyal mollusc communities at the Early-Middle Miocene boundary. The nassariid gastropodNassarius janschloegliHarzhauser nov. sp. and the naticid gastropodPolinices cerovaensisHarzhauser nov. sp. are introduced as new species.

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