Gonadal development and intersex condition of marbled lungfish, Protopterus aethiopicus (Heckel, 1851), in contaminated sites in Lake Victoria, Uganda

2020 ◽  
Vol 55 (4) ◽  
pp. 292-302
Author(s):  
Inuwa Badamasi ◽  
Robinson Odong ◽  
Charles Masembe
Keyword(s):  
Lake Victoria ◽  
Gonadal Development ◽  
Contaminated Sites ◽  
Intersex Condition ◽  
Protopterus Aethiopicus

Genetic variation in the marbled lungfish Protopterus aethiopicus in Lake Victoria and introduction to Lake Baringo, Kenya

2006 ◽  
Vol 69 (sb) ◽  
pp. 189-199 ◽  
Author(s):  
S. Garner ◽  
T. P. Birt ◽  
C. M. Mlewa ◽  
J. M. Green ◽  
A. Seifert ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Lake Victoria ◽  
Protopterus Aethiopicus

Phosphates in red cells of two lungfish: the South American, Lepidosiren paradoxa, and the African, Protopterus aethiopicus

1978 ◽  
Vol 56 (4) ◽  
pp. 882-886 ◽  
Author(s):  
Grant R. Bartlett
Keyword(s):  
Blood Cells ◽  
Adenine Nucleotide ◽  
Lake Victoria ◽  
Alpha Helix ◽  
Water Soluble ◽  
Red Cells ◽  
South American ◽  
The South ◽  
Inositol Polyphosphates ◽  
Protopterus Aethiopicus

Measurements were made of water-soluble phosphates in red blood cells of two lungfish, the South American, Lepidosiren paradoxa, and the African, Protopterus aethiopicus. Lepidosiren was studied on the research vessel Alpha Helix on the Amazon River and P. aethiopicus was obtained at Lake Victoria, Kenya. The red cells of both species contained moderate amounts of ATP and GTP, with the former predominant. Also present were higher concentrations of the uridine mononucleotides, UDP and UTP, than had been seen in other kinds of red cells. Of special interest was the discovery in red cells of both fish of a previously unreported inositol diphosphate. No other inositol polyphosphates were found. The red cells of P. aethiopicus had two phosphate compounds (one an adenine nucleotide), which are still unidentified

Decline of the African lungfish ( Protopterus aethiopicus ) in Lake Victoria (East Africa)

2002 ◽  
Vol 40 (1) ◽  
pp. 42-52 ◽  
Author(s):  
Kees (P. C.) Goudswaard ◽  
Frans Witte ◽  
Lauren J. Chapman
Keyword(s):  
East Africa ◽  
Lake Victoria ◽  
African Lungfish ◽  
Protopterus Aethiopicus

DIHYDROTESTOSTERONE IN ADOLESCENT MALE PLASMA WITH NORMAL AND ABNORMAL GONADAL DEVELOPMENT

1971 ◽  
Vol 68 (1_Supplb) ◽  
pp. S68
Author(s):  
D. Gupta ◽  
Eileen M. McCafferty ◽  
K. Rager ◽  
K. Jendricke ◽  
J. Bierich
Keyword(s):  
Gonadal Development ◽  
Adolescent Male

Postnatal growth rate and gonadal development in circadian tau mutant hamsters reared in constant dim red light

Reproduction ◽  
2000 ◽  
pp. 327-330 ◽  
Author(s):  
RJ Lucas ◽  
JA Stirland ◽  
YN Mohammad ◽  
AS Loudon
Keyword(s):  
Time Course ◽  
Red Light ◽  
Somatic Growth ◽  
Postnatal Growth ◽  
Gonadal Development ◽  
Testicular Development ◽  
Wild Type ◽  
Similar Time ◽  
Syrian Hamsters ◽  
Body Weights

The role of the circadian clock in the reproductive development of Syrian hamsters (Mesocricetus auratus was examined in wild type and circadian tau mutant hamsters reared from birth to 26 weeks of age under constant dim red light. Testis diameter and body weights were determined at weekly intervals in male hamsters from 4 weeks of age. In both genotypes, testicular development, subsequent regression and recrudescence exhibited a similar time course. The age at which animals displayed reproductive photosensitivity, as exhibited by testicular regression, was unrelated to circadian genotype (mean +/- SEM: 54 +/- 3 days for wild type and 59 +/- 5 days for tau mutants). In contrast, our studies revealed a significant impact of the mutation on somatic growth, such that tau mutants weighed 18% less than wild types at the end of the experiment. Our study reveals that the juvenile onset of reproductive photoperiodism in Syrian hamsters is not timed by the circadian system.

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