The life-history of Pleistophora gigantea, Thélohan (Glugea gigantea Thél.)

Parasitology ◽  
1911 ◽  
Vol 4 (4) ◽  
pp. 345-363 ◽  
Author(s):  
N. H. Swellengrebel
Keyword(s):  
Life History ◽  
Nuclear Fusion ◽  
Vegetative Stage ◽  
Vegetative Period ◽  
Sporogonic Stage ◽  
History Of

The parasite which I have here described has a life-history containing two distinct stages: a vegetative stage and a sporogonic stage. During the vegetative period multinucleate individuals divide by irregular schizogony producing young uni- or paucinucleate individuals. During the sporogonic period, a number of trophozoites unite to form an aggregation which becomes encysted. In the encysted individuals (the pansporoblasts) there is an increase of nuclear substance and a reduction of plasmatic substance. The nuclei become arranged in pairs and by successive unequal divisions the pansporoblasts produce the sporoblasts which contain a pair of nuclei each. During the formation of the sporoblasts there is an increase of protoplasmatic substance. The sporoblasts become spores by the thickening of their pelliculae.At first the spores contain two nuclei, finally they become mononucleate. This must be explained by the fusion of the two nuclei.This nuclear fusion is probably to be interpreted as a paedogamous autogamy (in accordance with the nomenclature of Hartmann, 1909).

Experimental life history of Echinostoma cinetorchis

1990 ◽  
Vol 28 (1) ◽  
pp. 39 ◽  
Author(s):  
S H Lee ◽  
J Y Chai ◽  
S T Hong ◽  
W M Sohn
Keyword(s):  
Life History ◽  
History Of

Queering Gender Identity Work: A Life History of a Black Transgender Woman

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
Esethu Monakali
Keyword(s):  
Life History ◽  
Gender Identity ◽  
Public Spaces ◽  
Identity Work ◽  
Social Identities ◽  
Gender And Sexuality ◽  
Ongoing Effort ◽  
History Of ◽  
The Individual

This article offers an analysis of the identity work of a black transgender woman through life history research. Identity work pertains to the ongoing effort of authoring oneself and positions the individual as the agent; not a passive recipient of identity scripts. The findings draw from three life history interviews. Using thematic analysis, the following themes emerge: institutionalisation of gender norms; gender and sexuality unintelligibility; transitioning and passing; and lastly, gender expression and public spaces. The discussion follows from a poststructuralist conception of identity, which frames identity as fluid and as being continually established. The study contends that identity work is a complex and fragmented process, which is shaped by other social identities. To that end, the study also acknowledges the role of collective agency in shaping gender identity.

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