On Pelagiana trichodesmiae n.gen., n.sp., family Pandeidae, (Anthomedusae/Athecatae, Cnidaria), a new hydrozoan associated with the planktonic cyanophyte Trichodesmium thiebautii

1979 ◽  
Vol 57 (6) ◽  
pp. 1232-1237 ◽  
Author(s):  
Gary A. Borstad ◽  
Anita Brinckmann-Voss
Keyword(s):  
Green Alga ◽  
Blue Green Alga ◽  
The Family ◽  
Trichodesmium Thiebautii ◽  
The One

A new athecate hydroid and its young medusa are described, the hydranths of which are commonly found embedded in colonies of the planktonic blue-green alga Trichodesmium thiebautii Gomont in the tropical and subtropical Atlantic. The hydroid and its medusa, named Pelagiana trichodesmiae n.gen., n.sp., are placed tentatively in the family Pandeidae (order Anthomedusae/Athecatae) because of the structure of the medusa and the one circle of filiform tentacles on the hydroid. The medusa is known only from one specimen which was 0.3 mm wide and 0.4 mm high immediately after release. It is deep bell shaped with a stomach one-third of the subumbrella and two marginal tentacles with large triangular marginal bulbs.

Trichodesmium thiebautii; structure of a nitrogen-fixing marine blue-green alga (Cyanophyta)

PROTOPLASMA ◽  
1984 ◽  
Vol 119 (3) ◽  
pp. 188-196 ◽  
Author(s):  
Elisabeth Gantt ◽  
K. Ohki ◽  
Y. Fujita
Keyword(s):  
Green Alga ◽  
Blue Green Alga ◽  
Nitrogen Fixing ◽  
Trichodesmium Thiebautii

Extracellular release of photosynthetic products by a pelagic blue-green alga,Trichodesmium thiebautii

1978 ◽  
Vol 34 (5) ◽  
pp. 181-188 ◽  
Author(s):  
Sooji Shimura ◽  
Yukuya Yamaguchi ◽  
Yusho Aruga ◽  
Yoshihiko Fujita ◽  
Shun-ei Ichimura
Keyword(s):  
Green Alga ◽  
Blue Green Alga ◽  
Extracellular Release ◽  
Photosynthetic Products ◽  
Trichodesmium Thiebautii

Effect of Iron Limitation on the Ultrastructure of Agmenellum Quadruplicatum

1981 ◽  
Vol 39 ◽  
pp. 410-411
Author(s):  
L. P. Hardie ◽  
D. L. Balkwill ◽  
S. E. Stevens
Keyword(s):  
Growth Medium ◽  
Green Alga ◽  
Natural Habitat ◽  
Iron Limitation ◽  
Natural Environments ◽  
Blue Green Alga ◽  
Marine Cyanobacterium ◽  
Natural Systems ◽  
Thin Sectioning ◽  
Agmenellum Quadruplicatum

Agmenellum quadruplicatum is a unicellular, non-nitrogen-fixing, marine cyanobacterium (blue-green alga). The ultrastructure of this organism, when grown in the laboratory with all necessary nutrients, has been characterized thoroughly. In contrast, little is known of its ultrastructure in the specific nutrient-limiting conditions typical of its natural habitat. Iron is one of the nutrients likely to limit this organism in such natural environments. It is also of great importance metabolically, being required for both photosynthesis and assimilation of nitrate. The purpose of this study was to assess the effects (if any) of iron limitation on the ultrastructure of A. quadruplicatum. It was part of a broader endeavor to elucidate the ultrastructure of cyanobacteria in natural systemsActively growing cells were placed in a growth medium containing 1% of its usual iron. The cultures were then sampled periodically for 10 days and prepared for thin sectioning TEM to assess the effects of iron limitation.

Murder with Impunity: The Construction of Arab Masculinities and Honor Crimes

1970 ◽  
pp. 38-45
Author(s):  
May Abu Jaber
Keyword(s):  
Violence Against Women ◽  
Social Boundaries ◽  
Religious Institutions ◽  
The Social ◽  
The Family ◽  
The Media ◽  
The One ◽  
Male Authority ◽  
Cultural Networks ◽  
Gender Specific

Violence against women (VAW) continues to exist as a pervasive, structural,systematic, and institutionalized violation of women’s basic human rights (UNDivision of Advancement for Women, 2006). It cuts across the boundaries of age, race, class, education, and religion which affect women of all ages and all backgrounds in every corner of the world. Such violence is used to control and subjugate women by instilling a sense of insecurity that keeps them “bound to the home, economically exploited and socially suppressed” (Mathu, 2008, p. 65). It is estimated that one out of every five women worldwide will be abused during her lifetime with rates reaching up to 70 percent in some countries (WHO, 2005). Whether this abuse is perpetrated by the state and its agents, by family members, or even by strangers, VAW is closely related to the regulation of sexuality in a gender specific (patriarchal) manner. This regulation is, on the one hand, maintained through the implementation of strict cultural, communal, and religious norms, and on the other hand, through particular legal measures that sustain these norms. Therefore, religious institutions, the media, the family/tribe, cultural networks, and the legal system continually disciplinewomen’s sexuality and punish those women (and in some instances men) who have transgressed or allegedly contravened the social boundaries of ‘appropriateness’ as delineated by each society. Such women/men may include lesbians/gays, women who appear ‘too masculine’ or men who appear ‘too feminine,’ women who try to exercise their rights freely or men who do not assert their rights as ‘real men’ should, women/men who have been sexually assaulted or raped, and women/men who challenge male/older male authority.

Effects of amino acids on the blue-green alga (cyanobacteria) Tolypothrix scytonemoides (Gardner) Geitler

2006 ◽  
Vol 8 (3) ◽  
pp. 286-293
Author(s):  
Uma Maheshwari Rajendran ◽  
Elango Kathirvel ◽  
Anand Narayanaswamy
Keyword(s):  
Amino Acids ◽  
Green Alga ◽  
Blue Green Alga
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