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Zootaxa ◽  
2022 ◽  
Vol 5091 (4) ◽  
pp. 546-558
Author(s):  
ZHAOYANG CHEN ◽  
FENGXIANG LIU ◽  
DAIQIN LI ◽  
XIN XU

This paper reports four new species of the primitively segmented spider genus Songthela from Chongqing Municipality, China, based on morphological characters of both males and females: S. jinyun sp. nov., S. longbao sp. nov., S. serriformis sp. nov. and S. wangerbao sp. nov. We also provide the GenBank accession codes of mitochondrial DNA barcode gene, cytochrome c oxidase subunit I (COI), for the holotype of four new species for future identification.  


ZooKeys ◽  
2021 ◽  
Vol 1075 ◽  
pp. 1-32
Author(s):  
Kevin M. Moran ◽  
Jeffrey H. Skevington

The genus Romaleosyrphus Bigot is reviewed, including the description of seven new species (R. argosi Moran, sp. nov., R. bigoti Moran, sp. nov., R. drysus Moran, sp. nov., R. nephelaeus Moran & Thompson, sp. nov., R. soletluna Moran & Thompson, sp. nov., R. vockerothi Moran & Thompson, sp. nov. and R. woodi Moran, sp. nov.). Romaleosyrphus arctophiloides (Giglio-Tos), comb. nov. is transferred to Romaleosyrphus. Romaleosyrphusstat. rev. is redefined to represent the monophyletic unit of species within Criorhinina which possess holoptic males, a proximal ventral half of vein C with setae, a broad intersection of vein R1 with vein C, the distal part of R4+5 beyond M1 longer than cross-vein h and appressed pile on the abdomen. Descriptions, habitus and genitalia photographs, distributions, and an illustrated key for all nine Romaleosyrphus are presented. DNA barcode data are provided for eight of the species with a cytochrome c oxidase subunit I gene tree presented and discussed.


10.4194/ga433 ◽  
2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Mochamad Syaifudin ◽  
Dade Jubaedah ◽  
Ferdinand Hukama Taqwa ◽  
Ria Octaviani

Marble goby (Oxyeleotris marmorata) in Indonesia, spread across Sumatra, Kalimantan and Papua. The purpose of this study was to utilize a sequence of mitochondrial DNA Cytochrome Oxidase Subunit I gene, to analyze the phylogenetic tree and genetic distance between cultured and captured populations. This research was conducted on March-August 2020. The methods used in barcoding species were DNA isolation, amplification using PCR (Polymerase Chain Reaction) and sequencing of the COI mtDNA gene. The domesticated samples (n=3) were collected from Gandus Fish Seed Center (GFSC), while the wild samples (n=3) were captured from the Musi River in Beruge Village, Babat Toman District, both in Musi Banyuasin Regency. The sequenced COI mtDNA gene fragments were obtained from the PCR method. Three samples performed good PCR results, while the other three didn’t amplify properly. After the editing process, the COI gene sequencing produced a nucleotide length of 610 bp. Based on the BLAST (Basic Local Alignment Search Tool), domesticated marble goby (OMD2, OMD3) was in the same cluster with marble goby from the Musi River (OMS3). The genetic distance indicated that two specimens of domesticated marble goby were 100% identical, while the wild (OMS3) indicated a genetic distance of 0.0066 to domesticated species.


ZooKeys ◽  
2021 ◽  
Vol 1070 ◽  
pp. 31-40
Author(s):  
Ju-Hyeong Sohn ◽  
Cornelis van Achterberg ◽  
Yunjong Han ◽  
Hyojoong Kim

The species of the genus Hylcalosia Fischer, 1967 (Braconidae: Alysiinae) from South Korea are revised. One species, Hylcalosia bicolorsp. nov., is new to science. They are described and illustrated herein and an identification key to the Korean species is added. In addition, the DNA barcode region of the mitochondrial cytochrome c oxidase subunit I (COI) has been analysed for the new species and H. sutchanica is used for genetic comparison.


Zootaxa ◽  
2021 ◽  
Vol 5048 (1) ◽  
pp. 135-140
Author(s):  
DEVKANT SINGHA ◽  
ABHISHEK PATIDAR ◽  
VIKAS KUMAR ◽  
KAOMUD TYAGI

Mycterothrips nainiae sp. n. (Thripinae) is described and illustrated from India, and one genus and species, Paithrips circularis Nonaka and Jangvitaya, is newly recorded from India. A key to species of Mycterothrips from India is also provided. The DNA barcode data using partial mitochondrial cytochrome c oxidase subunit I (mtCOI) from the holotype also five sequences of Paithrips circularis were generated.  


2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
S Kerth ◽  
A Petry ◽  
D Kracun ◽  
V B Schini-Kerth ◽  
A Goerlach

Abstract Background NADPH oxidase-derived reactive oxygen species (ROS) contribute to cardiac dysfunction, often characterized by coronary microvascular dysfunction, an inflammatory response and cardiomyocyte hypertrophy. Hyperactivity of the sympathetic nervous system (SNS) induces oxidative stress, promoting cardiac dysfunction and the development of heart failure. Selective inhibitors of sodium-glucose co-transporter 2 (SGLT2), have shown remarkable cardioprotective effects in clinical studies. Recently, SGLT2 inhibitors have been reported to prevent endothelial dysfunction and pro-inflammatory responses in endothelial cells in response to angiotensin II involving NADPH oxidases. Purpose Therefore, the aim of the study was to determine whether endothelial NADPH oxidases promote SNS-induced cardiac dysfunction and to clarify the role of SGLT2. Methods Male wild-type mice and mice lacking the NADPH oxidase subunit p22phox in the endothelium (p22phox ecKO, 11-week-old) were treated with isoproterenol (100 mg/kg) for five consecutive days and sacrificed at day 14. Hemodynamic measurements of left (LV) and right (RV) ventricles were performed by a transthoracic approach. Heart tissue sections were stained with Sirius red to evaluate fibrosis and wheat germ agglutinin to assess cardiomyocyte size. Cultured human microvascular endothelial cells (HMEC-1) were stimulated with 100 nM isoproterenol and ROS levels were assessed by dihydroethidium fluorescence. The expression level of target genes and proteins was assessed by quantitative real-time PCR and Western blot, respectively. siRNA approaches were used to down-regulate either the NADPH oxidase subunit p22phox or SGLT2. Results The isoproterenol treatment increased LV and RV systolic pressures in wild-type mice but not in p22phox ecKO mice. p22phox ecKO mice were protected against isoproterenol-induced fibrosis, cardiac remodeling characterized by upregulation of mRNA levels of ANP, BNP and β-MHC, and pulmonary congestion. LV remodeling was associated with upregulation of the NADPH oxidase subunits p22phox, Nox2, and Nox4 as well as of SGLT2 in wild-type mice, however no such effects were observed in p22phox ecKO mice. Exposure of HMEC-1 to isoproterenol stimulated the formation of ROS and caused an upregulation of p22phox and SGLT2 protein levels in a time- and concentration-dependent manner. No such effects were observed following silencing of either p22phox or SGLT2, or use of a selective SGLT2 inhibitor. Conclusion Deletion of the NADPH oxidase subunit p22phox in the endothelium protected against SNS hyperactivity induced LV cardiac dysfunction and remodeling, and prevented upregulation of SGLT2. Since depletion of SGLT2 prevented the pro-oxidant response to isoproterenol in endothelial cells, the endothelial NADPH oxidase/SGLT2 pathway seems to have a prominent role in promoting cardiac remodeling and dysfunction in SNS hyperactivity. FUNDunding Acknowledgement Type of funding sources: Public hospital(s). Main funding source(s): Deutsches Herzzentrum München


2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Kamonchanok Bunmee ◽  
Urusa Thaenkham ◽  
Naowarat Saralamba ◽  
Alongkot Ponlawat ◽  
Daibin Zhong ◽  
...  

Abstract Background The malaria vector Anopheles minimus has been influenced by external stresses affecting the survival rate and vectorial capacity of the population. Since An. minimus habitats have continuously undergone ecological changes, this study aimed to determine the population genetic structure and the potential gene flow among the An. minimus populations in Thailand. Methods Anopheles minimus was collected from five malaria transmission areas in Thailand using Centers for Disease Control and Prevention (CDC) light traps. Seventy-nine females from those populations were used as representative samples. The partial mitochondrial cytochrome c oxidase subunit I (COI), cytochrome c oxidase subunit II (COII) and cytochrome b (Cytb) gene sequences were amplified and analyzed to identify species and determine the current population genetic structure. For the past population, we determined the population genetic structure from the 60 deposited COII sequences in GenBank of An. minimus collected from Thailand 20 years ago. Results The current populations of An. minimus were genetically divided into two lineages, A and B. Lineage A has high haplotype diversity under gene flow similar to the population in the past. Neutrality tests suggested population expansion of An. minimus, with the detection of abundant rare mutations in all populations, which tend to arise from negative selection. Conclusions This study revealed that the population genetic structure of An. minimus lineage A was similar between the past and present populations, indicating high adaptability of the species. There was substantial gene flow between the eastern and western An. minimus populations without detection of significant gene flow barriers. Graphical abstract


2021 ◽  
Vol 9 ◽  
Author(s):  
Vasiliki Kousteni ◽  
Marios Papageorgiou ◽  
Michail Rovatsos ◽  
Ioannis Thasitis ◽  
Louis Hadjioannou

The taxonomy within the genus Centrophorus has been controversial almost since its origin, raising uncertainties about the identification, the phylogenetic placement and the geographical distribution of several species. The partial nucleotide sequences of two mitochondrial DNA gene regions, the cytochrome c oxidase subunit I and the 16S ribosomal RNA, genetically confirmed the presence of the little gulper shark in Cypriot waters. The species presence in the Mediterranean Sea is revised and discussed.


2021 ◽  
Author(s):  
Rui Min ◽  
Jun–Xing Yang

Analyses of morphological and molecular data from specimens of Homatula from China reveal an undescribed species which lives in the Nanpanjiang River, the upper Pearl River, and indicate that H. acuticephala is a synonym of H. anguillioides. The new species is collected from Yunnan, China. It differs from its congeners by having a naked and robust body, developed adipose crests (depth of caudal peduncle in the percent of its length:70.53–78.48), a median notch on the lower jaw, a median gap on the lower lip, short barbels with maxillary barbels extend posteriorly reaching the anterior edge of eyes, vertebrae 37–38, completed lateral line. New species differs from other species of Homatula by 0.05–0.11 in K2P distance of mitochondrial cytochrome c oxidase subunit 1. Phylogenetic analysis based on mitochondrial cytochrome c oxidase subunit 1 indicate that new species formed a sister group to co-drainage species. Based on both morphological and molecular results, we confirm that the validation of this undescribed species named H. robusta sp. nov. and describe it.


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