Ecomorphology of Ostrea edulis (Linnaeus, 1758) in Kuala Gigieng Waters, Aceh Besar District

2021 ◽  
Vol 5 (1) ◽  
pp. 1-6
Author(s):  
Chitra Octavina ◽  
Fredinan Yulianda ◽  
Majariana Krisanti ◽  
Isdradjad Setyobudiandi
Keyword(s):  
Scientific Information ◽  
Morphological Characteristics ◽  
Left Valve ◽  
Ostrea Edulis ◽  
Medium Sand ◽  
Purposive Sampling ◽  
Adaptation Pattern ◽  
High Predation ◽  
Human Predation ◽  
The Right

Ostrea edulis is one of the most common types of meat oysters and is commonly consumed by people in Kuala Gigieng, but until now there is not much scientific information about this species. The purpose of this study was to describe the ecomorphology of Ostrea edulis in Kuala Gigieng waters. This research was conducted from August to September 2013 in Kuala Gigieng Waters, Aceh Besar District. The method used in this research is purposive sampling. Identification of samples based on shell morphological characteristics including the exterior and interior of the shell using a magnifier lamp. The results showed that Ostrea edulis found in Kuala Gigieng waters had round, rough, hard, thick and uneven shells. The two valves are also not the same size, where the left valve is more concave than the right valve which tends to be flat. This is a form of the adaptation pattern of Ostrea edulis in Kuala Gigieng which tends to have a medium sand and clay sand substrate with a fairly high predation from both natural and human predation.

scholarly journals Unilateral Aplasia versus Bilateral Aplasia of the Vertebral Artery: A Review of Associated Abnormalities

2017 ◽  
Vol 2017 ◽  
pp. 1-20 ◽  
Author(s):  
L. Vasović ◽  
M. Trandafilović ◽  
S. Vlajković ◽  
G. Djordjević ◽  
M. Daković-Bjelaković ◽  
...  
Keyword(s):  
Vertebral Artery ◽  
Genetic Factors ◽  
Retrospective Studies ◽  
Morphological Characteristics ◽  
Male Gender ◽  
Recent Case ◽  
Vascular Pathology ◽  
The Right ◽  
Associated Abnormalities

Morphological characteristics of 108 cases of uni- and bilateral aplasia of the vertebral artery (VA) in reports or images of retrospective studies, including one recent case, published between 1967 and 2016 are analyzed. Incidence, gender, persistence of carotid-vertebrobasilar anastomosis (CVBA), associated with other vascular variants, and vascular pathology in each group of uni- and bilateral VA aplasia are mutually compared. Most of the cases of VA aplasia in ages 31 to 80 were discovered in USA, Japan, and India. The bilateral VA aplasia is more common in the male gender than in the female one. The side of the VA aplasia had a significant effect on the side of CVBA persistence. Associated aplasia of other arteries was more common in cases of unilateral VA aplasia. The left VA was more commonly hypoplastic in cases of single right VA aplasia than the right VA in cases of single left VA aplasia. Aneurysms of definitive arteries were more frequent in cases of single right VA aplasia than in cases of single left VA aplasia. We claim that the aplasia of the VA probably depends on genetic factors in some races, while diseases are expressed usually in persons over 30 years of age.

Geographical review of the ostracod genus Vestalenula (Darwinulidae) and a new subterranean species from southern France

2007 ◽  
Vol 21 (5) ◽  
pp. 471 ◽  
Author(s):  
Malvina Artheau
Keyword(s):  
New Record ◽  
Cladistic Analysis ◽  
Left Valve ◽  
Southern France ◽  
Recent Species ◽  
European Program ◽  
The Right ◽  
Subterranean Species ◽  
A New Species ◽  
Subterranean Environment

A new species of Vestalenula is described. Vestalenula carveli, sp. nov. was found in the interstitial habitat of rivers during the PASCALIS European program when sampling three sites on the Aude River and Tech River basins (Roussillon region, southern France). With its large caudal brooding cavity, the presence of an external keel on the right valve and an internal tooth on the left valve, V. carveli is a typical representative of the genus. This new record brings the worldwide number of Vestalenula species to 24. Vestalenula representatives are known from the Lower Miocene to the present. A review of present-day knowledge of the geographical distribution of the genus and a cladistic analysis are presented in order to assess the biogeography of this genus and the importance of the discovery of a new subterranean species in southern France. The geographical review of the genus showed that most species of Vestalenula occur in subtropical regions. However, V. cylindrica, V. boteai and V. danielopoli lived, or are living, in the Palearctic. Vestalenula pagliolii occurs in both hemispheres. Many of the Recent species live in semiterrestrial and/or interstitial habitats and occur in geographically restricted areas. The distribution of the species of Vestalenula suggests independent colonisation of the subterranean environment by several species; this hypothesis is supported by the cladistic analysis.

Morning glory disc anomaly-associated maculopathy: multimodal imaging

2021 ◽  
Vol 14 (1) ◽  
pp. e237462
Author(s):  
Inae Hwang ◽  
Marta Ugarte
Keyword(s):  
Multimodal Imaging ◽  
Fluid Pressure ◽  
Morphological Characteristics ◽  
Posterior Pole ◽  
Morning Glory ◽  
Fluid Accumulation ◽  
Tomography Imaging ◽  
Morning Glory Disc Anomaly ◽  
Optical Coherence Tomography Imaging ◽  
The Right

Morning glory disc anomaly (MGDA) is most commonly found in white females in childhood with reduced vision. One in two cases have been reported to develop maculopathy or posterior pole retinal detachment as they grow older. The pathophysiology of MGDA-associated maculopathy is not well understood.We describe a 31-year-old black woman, who presented with gradual reduction of vision in the right eye due to MGDA-associated maculopathy. We identified morphological characteristics of the optic disc and macula with multicolour and optical coherence tomography imaging.We speculate that the centripetal inner retina traction and cerebrospinal fluid pressure fluctuation play an important role in inner retinal fluid accumulation in the pathology of retinoschisis in MGDA. Further studies will shed some light of a potential cause-and-effect relationship between MGDA and retinoschisis.

scholarly journals ANALISIS KINERJA PENGELOLAAN ZAKAT DI BADAN AMIL ZAKAT NASIONAL (BAZNAS) KOTA YOGYAKARTA

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
M Samsul Haidir
Keyword(s):  
Mixed Method ◽  
Survey Methods ◽  
Sampling Technique ◽  
Relationship With God ◽  
Purposive Sampling ◽  
The Government ◽  
Index Value ◽  
The Right ◽  
To Receive

AbstractZakat is a means of worship that must be fulfilled by Muslims, where it involves a servant's horizontal relationship with God. The realization of the collection of zakat and infaq by BAZNAS in Yogyakarta in 2016 reached 4.38 billion rupiah. As for the purpose of this study is to evaluate the performance of the government and society in managing zakat, the performance of zakat institutions, and the influence of zakat on the welfare of those who have the right to receive zakat in Yogyakarta. This research was conducted using survey methods through interviews using questionnaires. Samples were selected using purposive sampling technique. The analysis was carried out using the National Zakat Index using the Mixed Method. The results showed that the performance of zakat management in Yogyakarta was quite good with an index value of 0.4878. 

scholarly journals The Generative Organs of the Oyster

1890 ◽  
Vol 1 (3) ◽  
pp. 268-281 ◽  
Author(s):  
Gilbert C. Bourne
Keyword(s):  
Adductor Muscle ◽  
Reproductive Organs ◽  
Posterior Surface ◽  
Anterior Surface ◽  
Left Valve ◽  
Left Hand ◽  
Natural Position ◽  
The Right ◽  
Ventral Border ◽  
Generative Organs

The following description of the reproductive organs of the oyster cannot well be understood without some acquaintance with the general anatomy of the animal. With the help of Pl. XXII, fig. 1, the most important features of its anatomy may readily be understood. It must be remembered that the valves of the oyster's shell lie right and left of the animal; that the concave valve which lies undermost in the natural position of the animal is the left valve, and the flat upper valve is the right valve. The hinge marks the dorsal border of the animal, and the opposite border is the ventral border. That side which is on the observer's right in fig. 1 is the anterior surface, and that on the left hand is the posterior surface. As the animal is compressed from side to side the anterior and posterior surfaces are very narrow. The great adductor muscle, by which the valves of the shell are closed, is seen lying in the centre of the animal in fig. 1.

Notes on the Mechanism of Food Movement in the Gut of the Larval Oyster, Ostrea edulis

1955 ◽  
Vol s3-96 (36) ◽  
pp. 539-544
Author(s):  
R. H. MILLAR
Keyword(s):  
Sagittal Plane ◽  
Ostrea Edulis ◽  
Left Wall ◽  
Absorptive Cells ◽  
The Right ◽  
Food Movement

The histology and mechanism of food movement in the stomach of the larval oyster are described. Cilia line the stomach, except the left wall, roof, and upper part of the right wall, which bear the smooth gastric shield. The diverticula contain non-ciliated absorptive cells and ciliated non-absorptive cells. A slender muscle passes round each diverticulum. Food is rotated in the stomach by the style, and also turned over in the sagittal plane. Particles are drawn into the diverticula and returned to the stomach by the rhythmic expansion and contraction of the diverticula.

ANALISIS LITERASI INFORMASI PADA KETERAMPILAN MENULIS KRITIS DAN ILMIAH MAHASISWA PENDIDIKAN BAHASA INDONESIA UHKBPNP

2020 ◽  
Vol 3 (2) ◽  
pp. 336-347
Author(s):  
Monalisa Frince S
Keyword(s):  
Information Literacy ◽  
Information Needs ◽  
Scientific Information ◽  
Language Education ◽  
Accuracy Comparison ◽  
Information Products ◽  
Literacy Ability ◽  
Information Characteristics ◽  
The Right ◽  
The University

This study aims to describe the information literacy ability of Indonesian language education students at the University of HKBP Nommensen Pematangsiantar on the subject of critical and scientific writing skills. This study analyzes the information literacy ability using the Seven Pillars Model created by the Standing Conferences of National and University Libraries (SCONUL) which consists of: (1) Identify (understand information needs, (2) Scope (determine the type of information, characteristics, challenges), (3) Plan (determine the search strategy), (4) Gather (do a search, access information), (5) Evaluate (Relevance, accuracy, comparison, (6) Manage (manage information, quote, compile a bibliography, know ethics using information , and (7) present (compile information products in the right form and present) .This type of research uses descriptive research.The method used in this study is a qualitative research method. The data collection techniques in this study are interviews and observation.Keywords: writing, critical and scientific, information literacy

A new cryptic species allied to Plestiodon japonicus (Peters, 1864) (Squamata: Scincidae) from eastern Japan, and diagnoses of the new species and two parapatric congeners based on morphology and DNA barcode

Zootaxa ◽  
2012 ◽  
Vol 3436 (1) ◽  
pp. 1 ◽  
Author(s):  
TAKU OKAMOTO ◽  
TSUTOMU HIKIDA
Keyword(s):  
New Species ◽  
Russian Far East ◽  
Far East ◽  
Dna Barcode ◽  
Morphological Characteristics ◽  
Taxonomic Status ◽  
The Other ◽  
Lizard Species ◽  
Diagnostic Features ◽  
The Right

A new species of scincid lizard allied to Plestiodon japonicus (Peters, 1864) was described as P. finitimus sp. nov., fromthe eastern part of Honshu and Hokkaido, Japan. A previous DNA study reported the taxonomic status of the easternJapanese populations of Plestiodon as an undescribed species on the basis of their collective genetic distinctness from aparapatric congener P. japonicus sensu strict from the western part of mainland Japan. We present the diagnostic featuresof P. finitimus compared to P. japonicus and P. latiscutatus Hallowell, 1861, the other parapatric species occurring in theIzu Peninsula and Izu Islands of central Japan, on the basis of morphological characteristics and DNA barcode patterns.Both P. finitimus and P. japonicus have a small postnasal and large anterior loreal that contacts the supralabials. In contrast,the Izu Peninsular populations of P. latiscutatus, which had no known diagnostic features relative to the other two species,usually have a large postnasal and small anterior loreal, with the latter separated from the supralabials by the former, ormay otherwise lack a postnasal. In most populations of P. finitimus, the right and left prefrontals are usually isolated fromeach other, whereas they exhibit medial contact in most populations of P. japonicus. Although all the above characters arevariable both within and between populations, 60–90% of the specimens from each locality on mainland Japan werecorrectly identified using a combination of these characters. Based on these characters, the Russian Far East populationof Plestiodon was also identified as P. finitimus. The interspecific sequence differences in the standard DNA barcoderegion (a 658 base pair fragment of the cytochrome c oxidase subunit I gene of mitochondrial DNA) were distinct, andeach of the three species was exclusively clustered in a neighbor-joining tree. The limited hybridization among the threespecies indicated by previous studies suggests that DNA barcodes could provide a reliable key for their correctidentification. The implications for the biogeography and speciation of the three parapatric lizard species are briefly discussed.

A new genus and four new species of subfamily Cyclocypridinae (Crustacea, Ostracoda) from Thailand

Zootaxa ◽  
2017 ◽  
Vol 4243 (2) ◽  
pp. 329 ◽  
Author(s):  
SUKONTHIP SAVATENALINTON
Keyword(s):  
New Species ◽  
New Genus ◽  
Terminal Segment ◽  
Ventral Part ◽  
Left Valve ◽  
Basal Segment ◽  
Caudal Ramus ◽  
The Third ◽  
The Right

A new genus, Dentocypria n. gen., in the subfamily Cyclocypridinae Kaufmann, 1900 is described from Thailand. The main distinguishing characters of the new genus are the presence of an internal tooth on the antero-ventral part of the left valve, the marginal tubercles on the right valve, the very elongated terminal segment of the madibular palp, the absence of setae on the basal segment of the second thoracopod (T2), the unusually long e-seta of T2, the short terminal segment of the third thoracopod (T3), the long Sp seta of the caudal ramus and the morphology of prehensile palps and hemipenis. Four new species of the new genus are here described: Dentocypria mesquitai n. gen. n. sp., Dentocypria chantaranothaii n. gen. n. sp., Dentocypria smithi n. gen. n. sp. and Dentocypria aequiloba n. gen. n. sp. A brief discussion on the generic characters and a key to the genera of the subfamily are provided. 

On the Habits and Adaptations of Aloidis (Corbula) Gibba

1946 ◽  
Vol 26 (3) ◽  
pp. 358-376 ◽  
Author(s):  
C. M. Yonge
Keyword(s):  
Great Reduction ◽  
Inorganic Material ◽  
Left Valve ◽  
Byssus Thread ◽  
Adductor Muscles ◽  
Inhalant Siphon ◽  
The Asymmetry ◽  
The Right ◽  
Marginal Region

1. Aloidis (Corbula) gibba is a eulamellibranch specialized for life in muddy gravel substrata to depths of up to about 80 fathoms.2. The shell is asymmetrical, the margin of the smaller, left valve being uncalcified and so fitting within the marginal region of the right valve. A possible manner in which this asymmetry is produced by the differential secretory activities of the two mantle edges is discussed.3. The marginal periostracum of the left valve has strengthening calcined regions posteriorly, probably to protect the siphons when extruded.4. The external ligament is reduced and the resilium condensed, possibly permitting some antero-posterior rocking of the shell valves when the adductors contract.5. The process of burrowing is described; on its completion the animal is anchored by a single byssus thread.6. The siphons are very short, the tentacles of the siphonal sheath lying on the surface of the substratum. The inhalant siphon is wide and relatively insensitive; it draws in much bottom material. The exhalant siphon is tubular and very sensitive. It is controlled by two paired bands of muscle.7. The great quantities of pseudo-faeces which accumulate are expelled by periodical contractions of the 'quick' portions of the adductor muscles, the asymmetry of the shell valves causing great reduction in the size of the inhalant chamber. The foot may also assist in clearing the chamber. 8. The large ctenidia create a very powerful current; they are adapted for dealing with large amounts of sediment by means of specialized terminal, guarding and cirrus-like cilia. Control of 'pumping' is primarily by means of the exhalant siphon.9. The stomach is large in correlation with the great amounts of inorganic material carried in with the food.

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