scholarly journals Morphology of the jaw, suspensorial, and opercle musculature of Beloniformes and related species (Teleostei: Acanthopterygii), with a special reference to the m. adductor mandibulae complex

Author(s):  
Ingmar Werneburg

The taxon Beloniformes represents a heterogeneous group of teleost fishes that show an extraordinary diversity of jaw morphology. I present new anatomical descriptions of the jaw musculature in six selected beloniforms and four closely related species. A reduction of the external jaw adductor (A1) and a changed morphology of the intramandibular musculature were found in many Beloniformes. This might be correlated with the progressively reduced mobility of the upper and lower jaw bones. The needlefishes and sauries, which are characterised by extremely elongated and stiffened jaws, show several derived characters, which in combination enable the capture of fish at high velocity. The ricefishes are characterised by several derived and many plesiomorphic characters that make broad scale comparisons difficult. Soft tissue characters are highly diverse among hemiramphids and flying fishes reflecting the uncertainty about their phylogenetic position and interrelationship. The morphological findings presented herein may help to interpret future phylogenetic analyses using cranial musculature in Beloniformes.

2014 ◽  
Author(s):  
Ingmar Werneburg

The taxon Beloniformes represents a heterogeneous group of teleost fishes that show an extraordinary diversity of jaw morphology. I present new anatomical descriptions of the jaw musculature in six selected beloniforms and four closely related species. A reduction of the external jaw adductor (A1) and a changed morphology of the intramandibular musculature were found in many Beloniformes. This might be correlated with the progressively reduced mobility of the upper and lower jaw bones. The needlefishes and sauries, which are characterised by extremely elongated and stiffened jaws, show several derived characters, which in combination enable the capture of fish at high velocity. The ricefishes are characterised by several derived and many plesiomorphic characters that make broad scale comparisons difficult. Soft tissue characters are highly diverse among hemiramphids and flying fishes reflecting the uncertainty about their phylogenetic position and interrelationship. The morphological findings presented herein may help to interpret future phylogenetic analyses using cranial musculature in Beloniformes.


2015 ◽  
Author(s):  
Ingmar Werneburg

The taxon Beloniformes represents a heterogeneous group of teleost fishes that show an extraordinary diversity of jaw morphology. I present new anatomical descriptions of the jaw musculature in six selected beloniforms and four closely related species. A reduction of the external jaw adductor (A1) and a changed morphology of the intramandibular musculature were found in many Beloniformes. This might be correlated with the progressively reduced mobility of the upper and lower jaw bones. The needlefishes and sauries, which are characterised by extremely elongated and stiffened jaws, show several derived characters, which in combination enable the capture of fish at high velocity. The ricefishes are characterised by several derived and many plesiomorphic characters that make broad scale comparisons difficult. Soft tissue characters are highly diverse among hemiramphids and flying fishes reflecting the uncertainty about their phylogenetic position and interrelationship. The morphological findings presented herein may help to interpret future phylogenetic analyses using cranial musculature in Beloniformes.


Phytotaxa ◽  
2021 ◽  
Vol 514 (2) ◽  
pp. 105-117
Author(s):  
SEUNG-YEOL LEE ◽  
LEONID N. TEN ◽  
BENJAMIN YAW AYIM ◽  
OKOUMA NGUIA FULBERT ◽  
KALLOL DAS ◽  
...  

A fungal strain designated KNU16-007, belonging to the family Botryosphaeriaceae, was isolated from soil in Daegu, Korea. Phylogenetic analyses based on the concatenated nucleotide sequences of the ITS and TEF-1α regions, showed that the isolate resides in a clade together with Diplodia species but occupies a distinct phylogenetic position. Conidial dimensions of strain KNU16-007 (22.7–29.3 μm × 8.9–10.9 μm) or its conidial length:width ratio were significantly differed from those of the closely related D. sapinea, D. intermedia, D. scrobiculata, D. seriata, D. crataegicola, D. rosacearum, and D. citricarpa clearly indicating morphological differences from these species. Detailed descriptions, illustrations, and discussions regarding the morphological and phylogenetic analyses of the closely related species are provided to support the novelty of the isolated species. The results of phylogenetic analysis and morphological observations indicate that strain KNU16-007 represents a novel species in the genus Diplodia, for which the name Diplodia parva sp. nov. is proposed.


Mycotaxon ◽  
2021 ◽  
Vol 136 (1) ◽  
pp. 59-71
Author(s):  
Ting Cao ◽  
Jia-Rui Yu ◽  
Ya-Ping Hu ◽  
Hai-Sheng Yuan

A new ectomycorrhizal fungus from southwestern China, Craterellus atrobrunneolus, is proposed as supported by morphological and phylogenetic analyses. The basidiocarps are characterized by a dark brown to brownish gray coloration, convex to plano-convex pileus with an umbilicate but not perforate center, smooth to slightly folded gray to cretaceous hymenophore, absence of clamp connections in all tissues, narrow basidia with 2–6 sterigmata, and broadly ellipsoid to subglobose basidiospores. Maximum likelihood and Bayesian sequence analyses of the ITS + nrLSU DNA regions confirm the phylogenetic position of the new species. Illustrations accompany the technical description and comparisons of C. atrobrunneolus and closely related species.


Phytotaxa ◽  
2016 ◽  
Vol 280 (2) ◽  
pp. 116 ◽  
Author(s):  
HUILI LI ◽  
XUELAN MA ◽  
PETER E. MORTIMER ◽  
SAMANTHA C. KARUNARATHNA ◽  
JIANCHU XU ◽  
...  

Four specimens of Phallus were collected during surveys in a Pinus armandii forest in Baoshan, Yunnan Province, China. Macro- and micro-characteristics, together with Internal Transcribed Spacer (ITS) sequence data, showed that the four specimens belong to a new species, here named Phallus haitangensis. The ITS phylogenetic analyses, morphological descriptions, color photographs, and line drawings are provided, and compared with closely related species in the genus.


PeerJ ◽  
2021 ◽  
Vol 9 ◽  
pp. e11542
Author(s):  
Luisa C. Pusch ◽  
Christian F. Kammerer ◽  
Jörg Fröbisch

The cynodont fauna of the Trirachodon-Kannemeyeria Subzone of the Middle Triassic Cynognathus Assemblage Zone (AZ) is almost exclusively represented by taxa belonging to the clade Eucynodontia. However, there is one basal (non-eucynodont) cynodont known to have survived into this assemblage: the enigmatic Bolotridon frerensis. BSPG 1934-VIII-7 represents by far the most extensive specimen of B. frerensis, consisting of a partial skull with occluded lower jaw. The specimen was initially described by Broili & Schröder (1934), but their description was limited to surface details of the skull and the dental morphology. Here, by using a computed tomographic (CT) reconstruction, we redescribe this specimen, providing novel information on its palatal and internal anatomy. New endocranial characters recognized for this taxon include ridges in the nasal cavity indicating the presence of cartilaginous respiratory turbinals. New data obtained from the CT scan were incorporated into the most recently published data matrix of early non-mammalian cynodonts to test the previously unstable phylogenetic position of Bolotridon. Our phylogenetic analyses recovered Bolotridon as the sister-taxon of Eucynodontia, a more crownward position than previously hypothesized.


Phytotaxa ◽  
2021 ◽  
Vol 518 (1) ◽  
pp. 25-35
Author(s):  
KALLOL DAS ◽  
LEONID N. TEN ◽  
JAE-HO BAN ◽  
SEUNG-YEOL LEE ◽  
HEE-YOUNG JUNG

Fungal strains, designated KNU-NL4 and KNU-OL2, belonging to the family Didymellaceae were isolated from a soil sample collected in Miryang, Korea. Phylogenetic analyses based on a concatenated dataset of DNA sequences of ITS regions and partial sequences of ACT, CAL, TEF1-α, and β-TUB genes showed that the isolates reside in a clade together with Boeremia species but occupy the distinct phylogenetic position. Morphologically, the novel strains produce bigger conidiomata (average size 169.8 μm) than the closely related B. rhapontica (126.59 μm) and smaller than the other close neighbor B. coffeae (187.5 μm). Both novel strains also differed from them by smaller colony size and colony color on OA and MEA. The detailed descriptions, illustrations, and discussions regarding the morphological and phylogenetic analyses of the closely related species are provided to support the novelty of the isolated species. The results of phylogenetic analysis and morphological observations indicate that strains KNU-NL4 and KNU-OL2 represent a novel species in the genus Boeremia, for which the name Boeremia parva sp. nov. is proposed.


PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7480 ◽  
Author(s):  
Qi Chen ◽  
Xiaobo Wu ◽  
Dequan Zhang

Fritillaria cirrhosa D. Don, whose bulb is used in a well-known traditional Chinese medicine to relieve cough and eliminate phlegm, is one of the most important medicinal plants of Fritillaria L. The species is widely distributed among the alpine regions in southwestern China and possesses complex morphological variations in different distributions. A series of newly related species were reported, based on obscure morphological differences. As a result, F. cirrhosa and its closely related species constitute a taxonomically complex group. However, it is difficult to accurately identify these species and reveal their phylogenetic relationships using traditional taxonomy. Molecular markers and gene fragments have been adopted but they are not able to afford sufficient phylogenetic resolution in the genus. Here, we report the complete chloroplast genome sequences of F. cirrhosa and its closely related species using next generation sequencing (NGS) technology. Eight plastid genomes ranged from 151,058 bp to 152,064 bp in length and consisted of 115 genes. Gene content, gene order, GC content, and IR/SC boundary structures were highly similar among these genomes. SSRs and five large repeat sequences were identified and the total number of them ranged from 73 to 79 and 63 to 75, respectively. Six highly divergent regions were successfully identified that could be used as potential genetic markers of Fritillaria. Phylogenetic analyses revealed that eight Fritillaria species were clustered into three clades with strong supports and F. cirrhosa was closely related to F. przewalskii and F. sinica. Overall, this study indicated that the complete chloroplast genome sequence was an efficient tool for identifying species in taxonomically complex groups and exploring their phylogenetic relationships.


2021 ◽  
Vol 9 ◽  
Author(s):  
Yu Yang ◽  
Yuanpin Xiao ◽  
Gangjiang Yu ◽  
TingChi Wen ◽  
ChunYing Deng ◽  
...  

Ophiocordyceps is the largest genus in the family Ophiocordicipitaceae, including many entomopathogenic species. In recent years, many species have been described in this genus, with a wide range of host insects. Entomopathogenic fungi include ecologically, economically and medicinally important species, but a large portion of their diversity remains to be discovered and described. In this study, a new species, Ophiocordyceps aphrophoridarum sp. nov, parasitising Aphrophoridae sp. (Hemiptera) is proposed from China, based on evidence from morphology and molecular phylogenetic analyses. This species is characterised by fibrous, pigmented stromata, cylindrical asci and filiform ascospores. Compared to its closest relative, O. tricentri, the new species has wider perithecia and longer asci. Molecular phylogenetic analyses of a multilocus dataset (consisting of SSU, ITS, LSU, TEF1, RPB1 and RPB2) confirm its placement in Ophiocordyceps. Ophiocordyceps aphrophoridarum is morphologically described and illustrated with colour photographs. Morphological comparisons with closely-related species are also presented in tabulated format.


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