Gross anatomy of the craniolateral antebrachial muscles in kinkajou ( Potos flavus , Carnivora): Intra‐ and interspecific variants within the family Procyonidae

2021 ◽  
Author(s):  
Juan Fernando Vélez‐García ◽  
Daniela Chunganá‐Caicedo ◽  
Sebastián Saavedra‐Montealegre
Keyword(s):  
Gross Anatomy ◽  
The Family ◽  
Potos Flavus

Some Aspects on the Anatomy and Histology of the Alimentary Canal of Hydrocyon lineatus, White Nile, Sudan

2020 ◽  
Author(s):  
Faiza Ahmed
Keyword(s):  
South America ◽  
Alimentary Canal ◽  
Gross Anatomy ◽  
Species Number ◽  
Diagnostic Feature ◽  
Carnivorous Fish ◽  
The Family ◽  
White Nile ◽  
General Organization ◽  
Mucosal Fold

<p>The present study is an attempt to describe the gross anatomy and histology of the alimentary canal of the economically important Nile fish, <em>Hydrocyon lineatus</em>, which is exclusively a carnivorous fish. The genus <em>Hydrocyan</em> is a member of the family Characidae. The family Characidae is a very generalized group confined to the fresh waters of Africa and South America. The species number about 500, of which only one-fifth are African. Of the twenty African genera only eight are represented in the Nile system. Living specimens of <em>Hydrocyon lineatus</em> were used during this work to study some aspects of the anatomy and histology of the alimentary canal. The general organization and structure of the different layers was found to confirm to the case found in general chordate organization. Nonetheless, it was thought pertinent to conclude that similarity in structure of the caeca to that of the intestine would justify replacement of the old nomenclature from pyloric caeca to intestinal caeca. Again, the presence of an intestinal mucosal fold could possibly be a characteristic diagnostic feature of the group in as much as it could be pleisiomorphic characteristic only occurring in lower groups of chordates.</p>

Kranz cells and mesophyll in the Chenopodiales

1978 ◽  
Vol 26 (5) ◽  
pp. 683 ◽  
Author(s):  
RC Carolin ◽  
SWL Jacobs ◽  
M Vesk
Keyword(s):  
Relative Abundance ◽  
Gross Anatomy ◽  
Taxonomic Significance ◽  
Mesophyll Cells ◽  
Starch Grains ◽  
The Family

Kranz anatomies found in members of the order Chenopodiales are described except those found in the family Chenopodiaceae which have been described previously. Illustrations are provided of the gross anatomy of the leaf and of the ultrastructure of the Kranz cells. The structure of the meso- phyll and the relative abundance of starch grains in mesophyll cells indicate that in some species the mesophyll may be functionally differentiated. It is suggested that these species show partial Kranz syndromes. Comments are made on the taxonomic significance of the Kranz syndrome within the order.

Gross Anatomy of the Wing Muscles in the Family Corvidae

1955 ◽  
Vol 53 (1) ◽  
pp. 1 ◽  
Author(s):  
George E. Hudson ◽  
Patricia J. Lanzillotti
Keyword(s):  
Gross Anatomy ◽  
The Family

Meeting the Family: Promoting Humanism in Gross Anatomy

2012 ◽  
Vol 24 (1) ◽  
pp. 49-54 ◽  
Author(s):  
Sheila M. Crow ◽  
Dan O'Donoghue ◽  
Jerry B. Vannatta ◽  
Britta M. Thompson
Keyword(s):  
Gross Anatomy ◽  
The Family

Digestive function in Australian magpie geese (Anseranas semipalmata)

2000 ◽  
Vol 48 (3) ◽  
pp. 265 ◽  
Author(s):  
Terence J. Dawson ◽  
Peter J. Whitehead ◽  
Adam McLean ◽  
F. D. Fanning ◽  
William R. Dawson
Keyword(s):  
Energy Requirement ◽  
Gross Anatomy ◽  
Short Chain Fatty Acids ◽  
Rice Grain ◽  
Average Value ◽  
The Family ◽  
The Mean ◽  
Maintenance Energy Requirement ◽  
Ileocaecal Junction ◽  
Australian Magpie

The Australian magpie goose (Anseranas semipalmata) is not really a ‘goose’ but an aberrant species representing the monotypic family Anseranatidae. It is herbivorous but its ability to utilise dietary fibre is uncertain. We examined digestive processes in tame birds fed natural forages in metabolism cages and in wild birds. An examination of the gross anatomy of the gut showed features similar to those in waterfowl of the family Anatidae, the true ducks and geese. In a total-collection feeding trial geese were fed either unhusked rice grain or fresh aquatic grass. The aquatic grass was high in fibre (neutral detergent fibre (NDF) was 74% of dry matter) and magpie geese could not maintain energy or nitrogen balance on this feed. The maintenance energy requirement of the caged magpie geese, as estimated on the rice diet, was 573 kJ kg–1 day–1, which was similar to that found for other species of geese. The maintenance nitrogen requirement was 0.44 g N kg–1 day–1 or 0.52 g N kg–0.75 day–1, which also was similar to the average value for birds. Fibre digestion on both diets was small, 19% and 27% of NDF for rice and grass respectively. Rates of passage of fibrous digesta through the gut of magpie geese varied with diet. The mean retention time for fibre was longer when feeding on the aquatic grass than on unhusked grain, 7.7 3.0 h v. 3.7 0.6 h Data from wild magpie geese clarified the process of digestion. The patterns of pH and short-chain fatty acids along the gut pointed to acid and enzymic digestion occurring in most of the tract, down to the ileocaecal junction. Fermentation appeared restricted to the caeca, rectum and cloaca, though, of note, the caeca contained little fibre, 5% NDF. Higher levels of fibre digestion were indicated in wild geese but fibre still was not a major contributor to the energy intake of these birds. The digestive capabilities of the magpie geese were considered in relation to their impact on the feeding and reproductive biology of these ‘geese’ in monsoonal, northern Australia

Triassic sponges (Sphinctozoa) from Hells Canyon, Oregon

1988 ◽  
Vol 62 (03) ◽  
pp. 419-423 ◽  
Author(s):  
Baba Senowbari-Daryan ◽  
George D. Stanley
Keyword(s):  
Endemic Species ◽  
Upper Triassic ◽  
Island Arc ◽  
Tropical Island ◽  
The Family ◽  
Wallowa Terrane ◽  
Unique Condition ◽  
Hells Canyon

Two Upper Triassic sphinctozoan sponges of the family Sebargasiidae were recovered from silicified residues collected in Hells Canyon, Oregon. These sponges areAmblysiphonellacf.A. steinmanni(Haas), known from the Tethys region, andColospongia whalenin. sp., an endemic species. The latter sponge was placed in the superfamily Porata by Seilacher (1962). The presence of well-preserved cribrate plates in this sponge, in addition to pores of the chamber walls, is a unique condition never before reported in any porate sphinctozoans. Aporate counterparts known primarily from the Triassic Alps have similar cribrate plates but lack the pores in the chamber walls. The sponges from Hells Canyon are associated with abundant bivalves and corals of marked Tethyan affinities and come from a displaced terrane known as the Wallowa Terrane. It was a tropical island arc, suspected to have paleogeographic relationships with Wrangellia; however, these sponges have not yet been found in any other Cordilleran terrane.

Electron Microscopy of Mycoplasma Pneumoniae

1971 ◽  
Vol 29 ◽  
pp. 258-259 ◽  
Author(s):  
E. S. Boatman ◽  
G. E. Kenny
Keyword(s):  
Electron Microscopy ◽  
Light Microscopy ◽  
Growth Phase ◽  
Hela Cells ◽  
Sulfonic Acid ◽  
Gamma Globulin ◽  
Horse Serum ◽  
Morphological Aspects ◽  
The Family

Information concerning the morphology and replication of organism of the family Mycoplasmataceae remains, despite over 70 years of study, highly controversial. Due to their small size observations by light microscopy have not been rewarding. Furthermore, not only are these organisms extremely pleomorphic but their morphology also changes according to growth phase. This study deals with the morphological aspects of M. pneumoniae strain 3546 in relation to growth, interaction with HeLa cells and possible mechanisms of replication.The organisms were grown aerobically at 37°C in a soy peptone yeast dialysate medium supplemented with 12% gamma-globulin free horse serum. The medium was buffered at pH 7.3 with TES [N-tris (hyroxymethyl) methyl-2-aminoethane sulfonic acid] at 10mM concentration. The inoculum, an actively growing culture, was filtered through a 0.5 μm polycarbonate “nuclepore” filter to prevent transfer of all but the smallest aggregates. Growth was assessed at specific periods by colony counts and 800 ml samples of organisms were fixed in situ with 2.5% glutaraldehyde for 3 hrs. at 4°C. Washed cells for sectioning were post-fixed in 0.8% OSO4 in veronal-acetate buffer pH 6.1 for 1 hr. at 21°C. HeLa cells were infected with a filtered inoculum of M. pneumoniae and incubated for 9 days in Leighton tubes with coverslips. The cells were then removed and processed for electron microscopy.

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