813 research outputs found
Eimeria yemenensae n.sp. ( Apicomplexa: Eimeriidae) from the rock agama ( Agama yemenensis) in Saudi Arabia
No full textEimeria yemenensae nsp. is described from the intestine of Agama yemenensis from Asir, southern region, Saudi
Arabia, Sporulated oocysts are elongate-ellipsoid, 29.2 X 17.6 (26.4-31.5 X 15519.0) pm, with smooth greenish-yellow
bilayered wall, 1.03 (0.9-1.3) pm. Micropyle, polar granule and oocyst residuum are absent. Sporocysts are
ellipsoid, 10.5 x 7.0 (8.0-11.0 X 6.4-7.8) pm. Sporocyst residuum is present. The sporocysts lack a Stieda body.
Sporozoitesa re crescent-shapedb,l unt at one end and slightly tapered at the other. Eimeria speciesfr om Agamidae
are compared.Corresponding Author:
Prof. Dr. Khaled AL-Rasheid
Department of Zoology, College of Science, King Saud Unicersity P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Email
Fig. 2 in Molecular data suggests the ciliate Mesodinium (Protista: Ciliophora) might represent an undescribed taxon at class level
No full textFig. 2. Models of the secondary structure of variable region 4 (V4) of the small subunit rRNA molecule, comparing helices 23_1, 23_2, 23_5 species. GenBank/EMBL accession numbers are enclosed in brackets. The number of nucleotides in Helix E23_1 for each species is given above which these species represent are marked in blue below each illustration.Published as part of Chen, Xiao, Ma, Hong-Gang, Al-Rasheid, Khaled A.S. & Miao, Miao, 2015, Molecular data suggests the ciliate Mesodinium (Protista: Ciliophora) might represent an undescribed taxon at class level, pp. 31-40 in Zoological Systematics 40 (1) on page 35, DOI: 10.11865/zs.20150102, http://zenodo.org/record/717667
Fig. 3 in Molecular data suggests the ciliate Mesodinium (Protista: Ciliophora) might represent an undescribed taxon at class level
No full textFig. 3. The comprehensive phylogenetic tree inferred from SSU rRNA gene sequences using Maximum Likelihood analysis with the model selected by AIC in MRMODELTEST for Bayesian analysis. Numbers at the nodes represent the bootstrap percentages from 1 000 replicates for ML analysis. Asterisks indicate bootstrap values less than 50% at a given node. Evolutionary distance is represented by the branch length separating the species in the figure. The scale bar corresponds to ten substitutions per 100 nucleotide positions.Published as part of Chen, Xiao, Ma, Hong-Gang, Al-Rasheid, Khaled A.S. & Miao, Miao, 2015, Molecular data suggests the ciliate Mesodinium (Protista: Ciliophora) might represent an undescribed taxon at class level, pp. 31-40 in Zoological Systematics 40 (1) on page 36, DOI: 10.11865/zs.20150102, http://zenodo.org/record/717667
New records of interstitial ciliates (Protozoa Ciliophora) from the saudi coasts of the red sea
No full textZoology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh
11451, Saudi Arabia (E-mail: [email protected])Sediment samples were collected from the intertidal zone at various localities
on the southern shores of the Red Sea and the marine interstitial ciliate
fauna was studied. Eighteen species were identified in live specimens and after
protargol impregnation; 14 of them represent new records for the Red Sea
fauna. The distribution of each species was compared to that in similar habitats
worldwide. The present study increases the total known number of ciliate
species in the Red Sea to 43
Redescription of the marine ciliate cardiostomatella vermiforme (Kahl, 1928) Corliss, 1960
No full textZoology Department, College of Science, King Saud University, Saudi Arabia.Cardiostomatella vermiforme, a large-sized loxocephalid ciliate, was found in the mesopsammon
of the Saudi coast of the Red Sea at Jeddah, a biotope very similar to that, where Kahl (1928)
discovered the type population. The morphology and infraciliature of C. vermiforme were studied
in live and protargol-impregnated cells. The morphologic and morphometric data largely agree
with the original description
Eimeria auratae n. sp. (Apicomplexa: Eimeriidae) infecting the lizard Mabuya aurata in Saudi Arabia
No full textEimeria auratae n. sp. was described from the gall bladder of the lizard Mabuya aurata collected at Al-Hofuf village, eastern region, Saudi Arabia. Morphology of sporulated as well as non-sporulated oocysts were studied. Sporulated oocysts were ellipsoidal 22-31.5x13.5-21.8 (27.7x18.5) microm with smooth brownish-yellow bilayered wall, 1.1 (0.9-1.3) microm. Micropyle, polar granule and oocyst residuum were absent. Sporocysts were ellipsoidal 10.5-12.8x7.5-9 (11.8x8.5) microm. Sporocyst residuum was present but Stieda body was absent. Sporozoites were crescent-shaped, blunt at one end and slightly tapered at the other. Eimeria species from Scincidae were compared.Corresponding Author:
Prof. Mohammed S. ALyousif, Department of Zoology
College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
Email: [email protected]
Redescription of the rare heterotrichid ciliate, copemetopus subsalsus villeneuve-brachon, 1940
No full textZoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.The morphology and infraciliature of the rare heterotrichid ciliate Copemetopus subsalsus Villeneuve-Brachon, 1940 were studied in live and protargol-impregnated specimens and also by scanning electron microscopy. It is characterized by a dumbbell- shaped macronucleus, a specific dorsal brush cilia, an oblique peristome, and a distinct S-shaped adoral zone of membranelles equipped with whip-shaped anterior adoral membranelles
A precipitous decline of the Algerian Newt Pleurodeles poireti Gervais, 1835 and other changes in the status of amphibians ofNumidia, North-Eastern Algeria
No full textThe worldwide erosion of biological diversity has not spared amphibians which are amongst the most affected taxa with numerous extinct or near-extinct species. Our knowledge of the status and ecology of amphibians of Algeria is still limited whereas local natural habitats are fast disappearing under a strong anthropogenic pressure. Eighty two localities were sampled between 1996 and 2010, to survey the amphibian community within Numidia, North-Eastern Algeria. Nine species, three Urodeles (Pleurodeles poireti, Pleurodeles nebulosus and Salamandra algira and six Anurans (Bufo bufo spinosus, Bufo mauritanicus, Bufo viridis, Discoglossus pictus, Hyla meridionalis and Pelophylax saharicus) were found within the region. Results suggest a marked, rapid and unexplained crash of the Algerian Newt Pleurodeles poireti, a species endemic to a small area in and around Djebel Edough (Annaba). Information on the status (abundance and distribution) of each recorded taxon is provided and conservation measures are discussed in the light of an apparent local decline of Anurans and the vulnerability of three species (S. algira, P. nebulosus
and B. bufo spinosus).Déclin précipité du Triton de Poiret Pleurodeles poireti Gervais, 1835 et autres changements du statut des amphibiens de Numidie, Algérie du Nord-Est.
La crise aiguë que traverse la biodiversité à l’échelle planétaire n’a pas épargné les amphibiens qui figurent parmi les taxons les plus touchés, illustrés par le déclin prononcé ou la disparition de plusieurs espèces. Notre connaissance du statut et de l’écologie des amphibiens d’Algérie reste limitée alors que les milieux naturels locaux subissent une pression anthropique intense qui ne fait que s’accroître et qui risque de s’exacerber sous l’effet du réchauffement climatique. Dans le but d’inventorier et d’évaluer le statut du peuplement d’amphibiens du complexe de zones humides de la Numidie, «point chaud» pour de nombreux taxons aquatiques et poche relictuelle afrotropicale, nous
avons échantillonné 82 sites entre 1996 et 2010. Un total de neuf espèces dont trois Urodèles (Pleurodeles poireti Gervais, 1835, Pleurodeles nebulosus (Guichenot, 1850) et Salamandra algira Bedriaga, 1883) et six Anoures (Bufo bufo spinosus, Bufo mauritanicus Schlegel, 1841, Bufo viridis Laurenti, 1768, Discoglossus pictus Otth, 1837, Hyla meridionalis Boettger, 1874 et Pelophylax saharicus Boulanger in Hartert, 1913) ont été inventoriées. Un fait marquant est le déclin net, rapide et inexpliqué du Triton de Poiret Pleurodeles poireti, espèce endémique à une région limitée au Djebel Edough et ses environs, au cours des dernières années. Le statut de trois espèces (S. algira, P. nebulosus and B. bufo spinosus) semble préoccupant au vu des pressions anthropogéniques qui s’exercent sur la Numidie qui abrite 82% des amphibiens d’Algérie.Samraoui Boudjéma, Samraoui Farrah, Benslimane Nouara, Alfarhan Ahmed, Al-Rasheid Khaled A.S. A precipitous decline of the Algerian Newt Pleurodeles poireti Gervais, 1835 and other changes in the status of amphibians ofNumidia, North-Eastern Algeria. In: Revue d'Écologie (La Terre et La Vie), tome 67, n°1, 2012. pp. 71-81
Blepharisma intermedium padmavathi, 1959 (ciliophora: heterotrichida) from al-hassa inland hypersaline oasis in Saudi Arabia
No full text1) Zoology Department, College of Science, King Saud University, Saudi Arabia; 2) Department of Cell Biology, Zoological Institute,
University of Copenhagen, Copenhagen, Denmark; 3Private Laboratory, Faaborg, DenmarkA medium-sized, pink heterotrich ciliate was found in hypersaline ponds in the inland Al-Hassa Oasis. The morphology and
infraciliature were studied in vivo, and in silver carbonate and protargol impregnated cells. The organism has a slender filiform macronucleus
without terminal swellings. The morphology and morphometric data agree largely with the original description of Blepharisma intermedium
Padmavathi, 1959; however, the present organism has fewer kineties and both kinetosomes of somatic dikinetids are ciliated. The findings
are discussed on the basis of a summary made from available data on other Blepharisma species with a filiform macronucleus
sj-docx-3-psg-10.1177_22925503231195017 - Supplemental material for Adipose-Derived Stem Cell Therapy in Hypertrophic and Keloid Scars: A Systematic Review of Experimental Studies
No full textSupplemental material, sj-docx-3-psg-10.1177_22925503231195017 for Adipose-Derived Stem Cell Therapy in Hypertrophic and Keloid Scars: A Systematic Review of Experimental Studies by Abdulrhman Khaity, Khaled Albakri, Nada Mostafa Al-dardery, Yaman A.S. Yousef, Jose A. Foppiani and Samuel J. Lin in Plastic Surgery</p
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