Teliospore development of Narasimhania alismatis in artificial culture

Hydrobiologia ◽  
1980 ◽  
Vol 72 (3) ◽  
pp. 249-252
Author(s):  
Allan Singh ◽  
M. S. Pavgi
Keyword(s):  
Artificial Culture ◽  
Teliospore Development

TELIOSPORE DEVELOPMENT IN THE PUCCINIASTREAE

1933 ◽  
Vol 9 (5) ◽  
pp. 458-485 ◽  
Author(s):  
S. M. Pady
Keyword(s):  
Epidermal Cells ◽  
The Other ◽  
General Situation ◽  
Thin Walled ◽  
Primordial Cell ◽  
Teliospore Development

The genera that constitute the Pucciniastreae display a wide variation in the type of teliospore produced, as well as in the time and place of production. From the standpoint of development, however, there is a general situation that is common. In all genera primordial cells are formed from enlarged hyphal cells of the mycelium. These give rise to teliospore initials which are in the epidermal cells in Calyptospora, Milesia, Hyalopsora and Thecopsora, and are subepidermal in the other genera. These initials divide to form the mature teliospores, which are thick or thin walled, and few to many-celled. In all cases the teliospore is the product of a single primordial cell.The teliospores of Calyptospora goeppertiana are formed from a perennial mycelium, which causes a witches' broom and hypertrophied stems on species of Vaccinium. The mycelium gives rise to primordial cells in the cortex just below the epidermis. Each primordial cell pierces the host wall above and the contents pass in to form the initial, which by growth and division becomes the teliospore. The mature teliospores are one- to four-celled, with a thickened, dark brown wall. Development is not simultaneous, but progressive, and the teliospores are first formed in the basal parts, moving slowly upward until every cell of the hypertrophied portion of the stem is completely filled. In four species of Milesia the method of development is similar. The spores, however, are thin walled, and are formed in the epidermal cells of the overwintered fronds of their fern hosts. Thecopsora vacciniorum is similar to Milesia in many respects. The teliospores are intra-epidermal, thin walled and multicellular. In Pucciniastrum the teliospores are subepidermal, and arise from primordial cells, as in Calyptospora, Milesia and Thecopsora. The teliospore initials are closely packed, and the mature spores may form extended crusts. The simplest type of development is found in Uredinopsis, which is generally considered to be the most primitive of the fern rusts. Primordial cells are formed in the same way as in the other genera. These round up to form the initials, and cross walls are laid down to give the mature spores.From these studies two possible lines of development are suggested, both beginning with Uredinopsis. One line would lead through the intra-epidermal forms, as Milesia, Calyptospora, etc., and the other through the subepidermal genera, as Pucciniastrum and Melampsoridium.

Soft computing approaches to identify cellular quantity of artificial culture bone

2010 ◽  
Author(s):  
Naomi Yagi ◽  
Yoshitetsu Oshiro ◽  
Osamu Ishikawa ◽  
Keisuke Oe ◽  
Yutaka Hata
Keyword(s):  
Soft Computing ◽  
Artificial Culture

Phenomena of Guttation and Autolysis in Artificially Cultured Seed Borne Trichoderma sp. from Dipterocarpus retusus

2019 ◽  
Vol 42 (3) ◽  
pp. 299-301
Author(s):  
Amar Nath Singh ◽  
Keyword(s):  
Present Article ◽  
Culture Conditions ◽  
Ecological Significance ◽  
Wild Mushroom ◽  
Natural Conditions ◽  
Mushroom Species ◽  
Artificial Culture ◽  
Trichoderma Species ◽  
Trichoderma Sp ◽  
Different Sources

The phenomena of the guttation and autolysis have been reported in various wild mushroom species in natural conditions. These have also been reported in various fungi including Trichoderma species from different sources during their artificial culturing. In the present article, these phenomena have been reported and discussed in the case of seed borne Trichoderma species isolated from the seeds of Dipterocarpus retusus and propagated under artificial culture conditions. The process of guttation and the autolysis are reported to have ecological significance to the respective organism in the ecosystem.

Can morphological characters be used to identify the pond-reared offspring of wild Chinese mitten crabs, Eriocheir sinensis, from different basins?

Crustaceana ◽  
2019 ◽  
Vol 92 (8) ◽  
pp. 957-978
Author(s):  
Xiaodong Jiang ◽  
Xugan Wu ◽  
Haining Wang ◽  
Yuhong Yang ◽  
Yongxu Cheng
Keyword(s):  
Morphological Difference ◽  
Principal Component ◽  
Morphological Characters ◽  
Eriocheir Sinensis ◽  
Stepwise Discriminant Analysis ◽  
Chinese Mitten Crab ◽  
Artificial Culture ◽  
Mitten Crab ◽  
Mitten Crabs ◽  
Morphological Differences

Abstract Although morphology is always used to distinguish wild Chinese mitten crab (Eriocheir sinensis) populations, whether morphology could be used to identify the pond-reared offspring of wild E. sinensis populations has remained unclear. This study was undertaken to examine the morphological difference of wild E. sinensis (G0) from the Yangtze River (YR), Huang River (HR) and Liao River (LR) as well as their pond-reared offspring (G1). The results showed that: (1) The amount of significantly different parameters of three G1 populations was evidently less than that of three G0 populations; (2) G0 and G1 individuals of each population were clearly separated by principal component analysis, furthermore, three G0 populations were clearly separated while three G1 populations were not well distinguished from each other; (3) discrimination accuracy of G1 individuals in stepwise discriminant analysis was obviously lower than that of G1 populations; (4) G0 and G1 populations were clustered into two separate clusters in the cluster analysis. In conclusion, morphological differences between wild E. sinensis populations had disappeared after one generation of artificial culture, and morphology thus probably cannot be used to distinguish the pond-reared offspring originated from three wild E. sinensis populations.

scholarly journals The effects of stock enhancement of pikeperch (Sander lucioperca) in Iranian coastal waters of the Caspian Sea

2007 ◽  
Vol 64 (5) ◽  
pp. 973-980 ◽  
Author(s):  
Shahram Abdolmalaki ◽  
Iwona Psuty
Keyword(s):  
Coastal Waters ◽  
Caspian Sea ◽  
Stock Enhancement ◽  
Early Years ◽  
Predatory Fish ◽  
Market Demand ◽  
Sander Lucioperca ◽  
The Caspian Sea ◽  
Artificial Culture ◽  
Abundant Population

Abstract Abdolmalaki, S., and Psuty, I. 2007. The effects of stock enhancement of pikeperch (Sander lucioperca) in Iranian coastal waters of the Caspian Sea. – ICES Journal of Marine Science, 64: 973–980. Annual landings of pikeperch (Sander lucioperca) in Iranian coastal waters of the Caspian Sea in the early years of its exploitation, the late 1920s and early 1930s, reached some 3000 t. However, after 1935, catches declined drastically through overfishing, declining sea level, and the destruction of spawning grounds in the Anzali Lagoon. In 1990, Iran initiated a programme of artificial culture to enhance the local stock. The aim of the programme was and still is to restore the formerly abundant population of this predatory fish and to increase the profitability of the beach-seine fisheries of fishers who had stopped deploying gillnets, which pose a threat to the valuable species of sturgeon in the Caspian. Analysis of the age composition of pikeperch catches indicates that the use of beach-seines does not prevent overfishing of young pikeperch released as fingerlings in the same calendar year in which the fishing season started. No undersized fish are discarded back into the sea, because there is market demand for even the smallest fish, and a lack of communication exists between the programme beneficiaries and the management and research units. Some 15 years after it was initiated, the effectiveness of stock enhancement at a level of 4–6million fry per year remains uncertain.

Balansia Claviceps in Artificial Culture

Mycologia ◽  
1969 ◽  
Vol 61 (3) ◽  
pp. 572-579 ◽  
Author(s):  
B. A. Ullasa
Keyword(s):  
Artificial Culture

Supplement to Report on the Sponge Fishery of Florida and the Artificial Culture of Sponges.

1896 ◽  
Vol 4 (3) ◽  
pp. 289-292 ◽  
Author(s):  
E. J. Allen
Keyword(s):  
United States ◽  
The United States ◽  
Detailed Account ◽  
Biscayne Bay ◽  
Artificial Culture ◽  
The Subject

Since the Report on the subject of the Artificial Culture of Sponges was published, some further information of importance relating to the subject has been courteously supplied by the Acting Commissioner of the United States Commission of Fish and Fisheries. This information is in the form of a letter to the United States Commission from Mr. Ralph M. Monroe, of Cocoanut Grove, Biscayne Bay, Florida, to whom the Acting Commissioner refers as “an intelligent and energetic man, whose statements, we think, can be given entire credence” wherein this gentleman gives a detailed account of some experiments conducted by himself at Biscayne Bay, during the years 1889, 1890 and 1891.

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