scholarly journals Niphargus dancaui sp. nov. (Amphipoda, Niphargidae) – a new species thriving in sulfidic groundwaters in southeastern Romania

2015 ◽  
Author(s):  
Traian Brad ◽  
Cene Fišer ◽  
Jean-François Flot ◽  
Serban M. Sarbu
Keyword(s):  
Morphological Analysis ◽  
Central Italy ◽  
Northern Italy ◽  
28S Rrna ◽  
Cave System ◽  
Movile Cave ◽  
The Town ◽  
Interpopulational Variability ◽  
A New Species ◽  
Rrna Sequences

Niphargus dancaui sp. nov., previously referred to as Niphargus cf. stygius, was sampled from various groundwater sites in and near the town of Mangalia (SE Romania) and described with Movile Cave (a sulfidic, chemoautotrophically based ecosystem) as type locality. A short comparison with Niphargus stygius specimens from Slovenia was made, together with a morphological analysis of interpopulational variability. Males of N. dancaui sp. nov. were relatively large (17 mm), with long antennae, pereiopods and uropod III. Females were slightly smaller, with shorter antennae, pereiopods and uropod III. Interpopulational variability was noticed in the chaetotaxy of the telson lobes and uropod III. N. dancaui sp. nov. is morphologically very close to N. lessiniensis and N. tridentinus, two species present in northern Italy, but distinct genetically from them based on 28S rRNA sequences. Instead, the closest relative of N. dancaui sp. nov. sequenced so far for this marker is N. montanarius, which inhabits a sulfidic cave system in central Italy. The work presented here contributes to our knowledge of groundwater crustacean biodiversity in general and of the systematics of the genus Niphargus in particular.

Cryptic diversity of stygobiotic shrimp genus Xiphocaridinella Sadowsky, 1930 (Crustacea: Decapoda: Atyidae): the first case of species co-occurrence in the same cave system in the Western Caucasus

Zootaxa ◽  
2018 ◽  
Vol 4441 (2) ◽  
pp. 201 ◽  
Author(s):  
IVAN MARIN
Keyword(s):  
Morphological Analysis ◽  
Genetic Data ◽  
Cryptic Diversity ◽  
Western Caucasus ◽  
Genetic Lineages ◽  
Karst Caves ◽  
Cave System ◽  
First Case ◽  
The Western Caucasus ◽  
A New Species

DNA barcoding of stygobiotic shrimps of the genus Xiphocaridinella Sadowsky, 1930 (Crustacea: Decapoda: Atyidae) collected in underground streams flowing inside two neighboring large karst caves (Otap and Abrskil сaves) revealed the presence of two distinct genetic lineages representing the first case of species co-occurrence in the Western Caucasus. The paper presents the complete morphological re-description of stygobiotic atyid shrimp Xiphocaridinella ablaskiri (Birštein, 1939) and the description of a new species using genetic and morphological analysis. Other known cases of co-occurrence of several stygobiotic shrimp species in the same cave system as well as new genetic data (COI mtDNA) on Western Caucasian species of the genus Xiphocaridinella are discussed in the paper. 

A new species of Hymeraphia Bowerbank, 1864 (Axinellida: Raspailiidae) from a deep-water canyon southwest off Ireland

Zootaxa ◽  
2018 ◽  
Vol 4466 (1) ◽  
pp. 61
Author(s):  
CHRISTINE MORROW ◽  
LOUISE A. ALLCOCK ◽  
GRACE MCCORMACK
Keyword(s):  
New Species ◽  
Mediterranean Sea ◽  
Deep Water ◽  
Deep Sea ◽  
Sponge Species ◽  
28S Rrna ◽  
Northeast Atlantic ◽  
A New Species ◽  
Rrna Sequences ◽  
Single Locality

The genus Hymeraphia currently comprises three species and all records of the genus are from the northeast Atlantic and the Mediterranean Sea. The present paper describes a new species, H. vaceleti sp. nov. from a deep-water canyon, off southwest Ireland. H. vaceleti sp. nov. is morphologically distinct from other Hymeraphia species and 28S rRNA sequences show substantial differences between our new species and other Hymeraphia spp. We present data on the prevalence of sponge species established on the basis of single specimens (singletons) or uniques (species only known from a single locality). We argue for the recognition of singletons for species that are rare or from habitats that are very difficult to survey or sample, such as the deep sea. 

Miniature deep-sea hatchetfish (Teleostei: Stomiiformes) from the Miocene of Italy

2007 ◽  
Vol 145 (1) ◽  
pp. 73-84 ◽  
Author(s):  
GIORGIO CARNEVALE
Keyword(s):  
Deep Sea ◽  
Morphological Analysis ◽  
Middle Miocene ◽  
New Genus ◽  
External Surface ◽  
Central Italy ◽  
New Genus And Species ◽  
Reduced Body ◽  
Caudal Vertebrae ◽  
The Town

AbstractA new genus and species of deep-sea hatchetfish, Discosternon federicae gen. et sp. nov., is described from the Middle Miocene (Serravallian) calciturbititic deposits of the Tufillo Unit exposed near the town of Gessopalena, central Italy. It is based on a single, very small, well-preserved and nearly complete specimen that exhibits a discoid physiognomy and a unique combination of features, many of which are reductive (loss of dorsal blade, loss of anal-fin hiatus, loss of abdominal keel-like structure, reduction of number of supraneurals, reduction of number of caudal vertebrae, presence of slender neural and haemal spines, external surface of cleithrum smooth). The comparative morphological analysis indicates that Discosternon is probably related to the derived genera Horbatshia and Sternoptyx. The highly reduced body size and the possession of many reductive characters indicate that Discosternon can be presumed to be a miniature fish. Anatomical and morphofunctional considerations suggest that Discosternon possibly was a midwater plankton feeder characterized by a reduced locomotory ability.

The Tiber river delta plain (central Italy): Coastal evolution and implications for the ancient Ostia Roman settlement

The Holocene ◽  
2011 ◽  
Vol 21 (7) ◽  
pp. 1105-1116 ◽  
Author(s):  
P. Bellotti ◽  
G. Calderoni ◽  
F. Di Rita ◽  
M. D’Orefice ◽  
C. D’Amico ◽  
...  
Keyword(s):  
Central Italy ◽  
River Mouth ◽  
Fourth Century ◽  
River Delta ◽  
Seventh Century ◽  
Delta Plain ◽  
Tiber River ◽  
Military Posts ◽  
Historical Accounts ◽  
The Town

Geomorphologic, stratigraphic, faunistic, palynological and carbon isotope analyses were carried out in the area of the Tiber river mouth. The results depict a complex palaeoenvironmental evolution in the area of the Roman town of Ostia, ascertain the changes of the Tiber river delta over the last 6000 years and support a re-interpretation of some archaeologic issues. The wave-dominated Tiber delta evolved through three distinct phases. In the first step (5000–2700 yr BP) a delta cusp was built at the river mouth, which was located north of the present outlet. Subsequently (2700–1900 BP), an abrupt southward migration of the river mouth determined the abandonment of the previous cusp and the progradation of a new one. The third step, which is still in progress, is marked by the appearance of a complex cusp made up of two distributary channels. The transition from the first to the second evolution phase occurred in the seventh century bc and was contemporary to the foundation of Ostia, as suggested by historical accounts. However, the oldest archaeological evidence of the town of Ostia dates to the fourth century bc, when human activity is clearly recorded also by pollen data. We suggest that the first human settlement (seventh century bc) consisted of ephemeral military posts, with the aim of controlling the strategic river mouth and establishing the Ostia saltworks. Only after the fourth century bc the coastal environment was stable enough for the foundation and development of the town of Ostia.

Integrative taxonomy of giant crested Eusirus in the Southern Ocean, including the description of a new species (Crustacea: Amphipoda: Eusiridae)

2020 ◽  
Author(s):  
Marie L Verheye ◽  
Cédric D’Udekem D’Acoz
Keyword(s):  
New Species ◽  
Species Diversity ◽  
Morphological Analysis ◽  
Integrative Taxonomy ◽  
Putative Species ◽  
Species Complexes ◽  
Statistical Parsimony ◽  
Bayesian Implementation ◽  
A New Species ◽  
Giant Species

Abstract Among Antarctic amphipods of the genus Eusirus, a highly distinctive clade of giant species is characterized by a dorsal, blade-shaped tooth on pereionites 5–7 and pleonites 1–3. This lineage, herein named ‘crested Eusirus’, includes two potential species complexes, the Eusirus perdentatus and Eusirus giganteus complexes, in addition to the more distinctive Eusirus propeperdentatus. Molecular phylogenies and statistical parsimony networks (COI, CytB and ITS2) of crested Eusirus are herein reconstructed. This study aims to formally revise species diversity within crested Eusirus by applying several species delimitation methods (Bayesian implementation of the Poisson tree processes model, general mixed Yule coalescent, multi-rate Poisson tree processes and automatic barcode gap discovery) on the resulting phylogenies. In addition, results from the DNA-based methods are benchmarked against a detailed morphological analysis of all available specimens of the E. perdentatus complex. Our results indicate that species diversity of crested Eusirus is underestimated. Overall, DNA-based methods suggest that the E. perdentatus complex is composed of three putative species and that the E. giganteus complex includes four or five putative species. The morphological analysis of available specimens from the E. perdentatus complex corroborates molecular results by identifying two differentiable species, the genuine E. perdentatus and a new species, herein described as Eusirus pontomedon sp. nov.

scholarly journals Otolaryngology activity in two hospitals in northern and central Italy differently affected by COVID-19 pandemic

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042199848
Author(s):  
Antonio Minni ◽  
Francesco Pilolli ◽  
Massimo Ralli ◽  
Niccolò Mevio ◽  
Luca Roncoroni ◽  
...  
Keyword(s):  
Intensive Care ◽  
Severe Acute Respiratory Syndrome ◽  
Intensive Care Units ◽  
Healthcare System ◽  
Central Italy ◽  
Northern Italy ◽  
Public Hospitals ◽  
Geographical Differences ◽  
Italian Regions

The Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) pandemic had a significant impact on the Italian healthcare system, although geographical differences were present; regions in northern Italy have been the most severely affected while regions in the south of the country were relatively spared. Otolaryngologists were actively involved in the management of the pandemic. In this work, we analyzed and compared the otolaryngology surgical activity performed during the pandemic in two large public hospitals located in different Italian regions. In northern Italy, otolaryngologists were mainly involved in performing surgical tracheotomies in COVID-19 positive patients and contributed to the management of these patients in intensive care units. In central Italy, where the burden of the infection was significantly lower, otolaryngologists focused on diagnosis and treatment of emergency and oncology patients. This analysis confirms the important role of the otolaryngology specialists during the pandemic, but also highlights specific differences between two large hospitals in different Italian regions.

Description of a new species of Auriculostoma (Digenea: Allocreadiidae) from Characidium heirmostigmata (Characiformes: Crenuchidae) from Argentina, using morphological and molecular data

2021 ◽  
Vol 95 ◽  
Author(s):  
M.M. Montes ◽  
J. Barneche ◽  
Y. Croci ◽  
D. Balcazar ◽  
A. Almirón ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
National Park ◽  
Molecular Data ◽  
Rrna Gene ◽  
28S Rrna ◽  
The Family ◽  
Parasitological Survey ◽  
Morphological And Molecular Data ◽  
A New Species

Abstract During a parasitological survey of fishes at Iguazu National Park, Argentina, specimens belonging to the allocreadiid genus Auriculostoma were collected from the intestine of Characidium heirmostigmata. The erection of the new species is based on a unique combination of morphological traits as well as on phylogenetic analysis. Auriculostoma guacurarii n. sp. resembles four congeneric species – Auriculostoma diagonale, Auriculostoma platense, Auriculostoma tica and Auriculostoma totonacapanensis – in having smooth and oblique testes, but can be distinguished by a combination of several morphological features, hosts association and geographic distribution. Morphologically, the new species can be distinguished from both A. diagonale and A. platense by the egg size (bigger in the first and smaller in the last); from A. tica by a shorter body length, the genital pore position and the extension of the caeca; and from A. totonacapanensis by the size of the oral and ventral sucker and the post-testicular space. Additionally, one specimen of Auriculostoma cf. stenopteri from the characid Charax stenopterus (Characiformes) from La Plata River, Argentina, was sampled and the partial 28S rRNA gene was sequenced. The phylogenetic analysis revealed that A. guacurarii n. sp. clustered with A. tica and these two as sister taxa to A. cf. stenopteri. The new species described herein is the tenth species in the genus and the first one parasitizing a member of the family Crenuchidae.

scholarly journals Molecular Phylogeny and Morphological Analysis Support a New Species and New Synonymy in Iranian Astragalus (Leguminosae)

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0149726 ◽  
Author(s):  
Ali Bagheri ◽  
Ali Asghar Maassoumi ◽  
Mohammad Reza Rahiminejad ◽  
Frank R. Blattner
Keyword(s):  
New Species ◽  
Molecular Phylogeny ◽  
Morphological Analysis ◽  
New Synonymy ◽  
A New Species

Asian Betylobraconinae (Hymenoptera, Braconidae), with description of a new genus and phylogenetic affinities of the tribe Facitorini

2008 ◽  
Vol 39 (2) ◽  
pp. 133-154 ◽  
Author(s):  
Alberto Sáez ◽  
Kaoru Maeto ◽  
Alejandro Zaldivar-Riverón ◽  
Sergey Belokobylskij
Keyword(s):  
New Species ◽  
Type Species ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
28S Rrna ◽  
Asian Region ◽  
Molecular Phylogenetic ◽  
Phylogenetic Affinities ◽  
One New Species ◽  
Rrna Sequences

AbstractThe taxonomy of the Asian genera of the subfamily Betylobraconinae, a small and understudied group within the hymenopteran family Braconidae, is revised. A new genus exclusively from the Asian region, Asiabregma gen. nov., containing three species (A. ryukyuensis sp. nov. (type species, Japan and Malaya), A. makiharai sp. nov. (Japan) and A. sulaensis (van Achterberg), comb. nov. (Indonesia)) is described. One new species of Aulosaphobracon, A. striatus sp. nov. from Vietnam, and one of Facitorus, F. amamioshimus sp. nov. from Japan, are also described. Based on molecular phylogenetic analyses using COI mtDNA and 28S rRNA sequences, the three genera previously placed in the tribe Facitorini, Facitorus, Conobregma and Jannya, together with Asiabregma gen. nov., are transferred to the rogadine tribe Yeliconini.

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