scholarly journals Genetic and morphometric differentiation in Old World bisexual species of Artemia (the brine shrimp)

Heredity ◽  
1994 ◽  
Vol 73 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Ernani J S Pilla ◽  
John A Beardmore
Keyword(s):  
Brine Shrimp ◽  
Bisexual Species ◽  
Old World ◽  
Morphometric Differentiation

scholarly journals On a parthenogenetic population of Artemia (Crustacea, Branchiopoda) from Algeria (El-Bahira, Sétif)

2015 ◽  
Vol 3 (4) ◽  
Author(s):  
Mounia Amarouayache ◽  
Naim Belakri
Keyword(s):  
High Temperatures ◽  
Brine Shrimp ◽  
Dry Weight ◽  
Bisexual Species ◽  
Mediterranean Populations ◽  
Old World ◽  
Hypersaline Lakes ◽  
Small Crustacean ◽  
And Bisexual ◽  
Northeastern Algeria

The brine shrimp Artemia is a small crustacean of hypersaline lakes which is commonely used in larviculture. There are parthenogenetic forms and bisexual species. The formers are from the Old World, and are the most widespread. They are known to prefer high temperatures and relatively stable environments, they are more fertile than sexual species and usually reproduce by ovoviviparity. The parthenogenetic population of Artemia from El-Bahira Lake (10 ha area), situated in the High Plateaus of Northeastern Algeria (1034 m alt), has been characterized and surveyed during two hydroperiods of 2009 and 2013. It has been found to develop only in cold seasons (winter and spring), even if the lake doesn’t dry in summer, and salinities between 46 and 127 ppt. It reproduces by oviparity and produces few cysts (5.69 ± 3.6 and 98.00 ±  28.32 offsprings/brood). Indeed, it behaves more like bisexual Mediterranean populations of A. salina than other parthenogenetic populations. Individual density was much lower during the hydroperiod of 2013, whereas fecundity was higher than in the previous hydroperiod (2009). Cyst reserve was estimated at 133.13 kg of dry weight which corresponds to a rate of 13.31 kg.ha-1

High-voltage electron microscopy of maxillary gland of spirochete-infected brine shrimp: lesion of efferent tubule

1988 ◽  
Vol 46 ◽  
pp. 362-363
Author(s):  
G. E. Tyson ◽  
M. J. Song
Keyword(s):  
Electron Microscopy ◽  
High Voltage ◽  
Brine Shrimp ◽  
Natural Populations ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
High Voltage Electron ◽  
Infected Adult

Natural populations of the brine shrimp, Artemia, may possess spirochete- infected animals in low numbers. The ultrastructure of Artemia's spirochete has been described by conventional transmission electron microscopy. In infected shrimp, spirochetal cells were abundant in the blood and also occurred intra- and extracellularly in the three organs examined, i.e. the maxillary gland (segmental excretory organ), the integument, and certain muscles The efferent-tubule region of the maxillary gland possessed a distinctive lesion comprised of a group of spirochetes, together with numerous small vesicles, situated in a cave-like indentation of the base of the tubule epithelium. in some instances the basal lamina at a lesion site was clearly discontinuous. High-voltage electron microscopy has now been used to study lesions of the efferent tubule, with the aim of understanding better their three-dimensional structure.Tissue from one maxillary gland of an infected, adult, female brine shrimp was used for HVEM study.

Ultrastructure and analytical microprobe analysis of simian lung mite pigments

1986 ◽  
Vol 44 ◽  
pp. 324-325
Author(s):  
R. W. Cole ◽  
J. C. Kim
Keyword(s):  
Biomedical Research ◽  
Tissue Damage ◽  
Microprobe Analysis ◽  
Old World Monkeys ◽  
Old World ◽  
Experimental Animals ◽  
The Past ◽  
Lung Mite ◽  
Mite Infestations ◽  
Cardiopulmonary System

In recent years, non-human primates have become indispensable as experimental animals in many fields of biomedical research. Pharmaceutical and related industries alone use about 2000,000 primates a year. Respiratory mite infestations in lungs of old world monkeys are of particular concern because the resulting tissue damage can directly effect experimental results, especially in those studies involving the cardiopulmonary system. There has been increasing documentation of primate parasitology in the past twenty years.

Old World History

1969 ◽  
Vol 14 (12) ◽  
pp. 622-624
Author(s):  
R. J. HERRNSTEIN
Keyword(s):  
World History ◽  
Old World

From the old world: The validity of the Somatoform Dissociation Questionnaire (SDQ-20)

1997 ◽  
Author(s):  
Ellert R. S. Nijenhuis ◽  
Philip Spinhoven ◽  
Richard van Dyck ◽  
Onno van der Hart ◽  
Johan Vanderlinden
Keyword(s):  
Old World ◽  
Somatoform Dissociation

Antimicrobial and cytotoxic activity of Macrophomina phaseolina isolated from gummosis infected citrus reticulata

2013 ◽  
pp. 125-133
Author(s):  
Rubal C Das ◽  
Rajib Banik ◽  
Robiul Hasan Bhuiyan ◽  
Md Golam Kabir
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Brine Shrimp ◽  
Inhibitory Concentration ◽  
Lethal Dose ◽  
Macrophomina Phaseolina ◽  
Chloroform Extract ◽  
Citrus Reticulata ◽  
Gram Negative Bacteria ◽  
Gram Negative

Macrophomina phaseolina is one of the pathogenic organisms of gummosis disease of orange tree (Citrus reticulata). The pathogen was identified from the observation of their colony size, shape, colour, mycelium, conidiophore, conidia, hyaline, spore, and appressoria in the PDA culture. The crude chloroform extracts from the organism showed antibacterial activity against a number of Gram positive and Gram-negative bacteria. The crude chloroform extract also showed promising antifungal activity against three species of the genus Aspergillus. The minimum inhibitory concentration (MIC) of the crude chloroform extract from M. phaseolina against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Shigella sonnie were 128 ?gm, 256 ?gm, 128 ?gm and 64 ?gm/ml respectively. The LD50 (lethal dose) values of the cytotoxicity assay over brine shrimp of the crude chloroform extract from M. phaseolina was found to be 51.79 ?gm/ml. DOI: http://dx.doi.org/10.3329/cujbs.v5i1.13378 The Chittagong Univ. J. B. Sci.,Vol. 5(1 &2):125-133, 2010

Otherness in More’s Utopia

Moreana ◽  
2016 ◽  
Vol 53 (Number 205- (3-4) ◽  
pp. 73-94
Author(s):  
Guillaume Navaud
Keyword(s):  
Foreign Policy ◽  
Major Part ◽  
Point Of View ◽  
Way Of Life ◽  
Old World ◽  
Self Sufficiency

Utopia as a concept points towards a world essentially alien to us. Utopia as a work describes this otherness and confronts us with a world whose strangeness might seem disturbing. Utopia and Europe differ in their relationship to what is other (Latin alienus) – that is, that which belongs to someone else, that which is foreign, that which is strange. These two worlds are at odds in regards to their foreign policy and way of life: Utopia aspires to self-sufficiency but remains open to whatever good may arrive from beyond its borders, while the Old World appears alienated by exteriority yet refuses to welcome any kind of otherness. This issue also plays a major part in the reception of More’s work. Book I invites the reader to distance himself from a European point of view in order to consider what is culturally strange not as logically absurd but merely as geographically remote. Utopia still makes room for some exoticism, but mostly in its paratexts, and this exoticism needs to be deciphered. All in all, Utopia may invite us to transcend the horizontal dialectics of worldly alterity in order to open our eyes to a more radical, metaphysical otherness.

A revision ofConioselinumHoffm.(Umbelliferae)in the Old World

2003 ◽  
Vol 33 (2) ◽  
pp. 353-377 ◽  
Author(s):  
Michael G. Pimenov ◽  
Eugene V. Kljuykov ◽  
Tatiana A. Ostroumova
Keyword(s):  
Old World
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