Evidence for the secondary sexual development of the anal fin in female kokanee salmon Oncorhynchus nerka

2015 ◽  
Vol 88 (2) ◽  
pp. 448-458 ◽  
Author(s):  
M. W. Thorn ◽  
Y. E. Morbey
Keyword(s):  
Sexual Development ◽  
Oncorhynchus Nerka ◽  
Kokanee Salmon ◽  
Secondary Sexual

scholarly journals Mouse Fem1b interacts with the Nkx3.1 homeoprotein and is required for proper male secondary sexual development

2008 ◽  
Vol 237 (10) ◽  
pp. 2963-2972 ◽  
Author(s):  
Xi Wang ◽  
Nishita Desai ◽  
Ya-Ping Hu ◽  
Sandy M. Price ◽  
Cory Abate-Shen ◽  
...  
Keyword(s):  
Sexual Development ◽  
Secondary Sexual

scholarly journals An XO-X ring X chromosome mosaicism in an individual with normal secondary sexual development.

1966 ◽  
Vol 3 (2) ◽  
pp. 129-133 ◽  
Author(s):  
A M Bishop ◽  
C E Blank ◽  
K Simpson ◽  
C J Dewhurst
Keyword(s):  
X Chromosome ◽  
Sexual Development ◽  
Chromosome Mosaicism ◽  
Secondary Sexual

PRECOCIOUS GROWTH OF SEXUAL HAIR WITHOUT OTHER SECONDARY SEXUAL DEVELOPMENT; "PREMATURE PUBARCHE," A CONSTITUTIONAL VARIATION OF ADOLESCENCE

PEDIATRICS ◽  
1952 ◽  
Vol 10 (4) ◽  
pp. 426-432
Author(s):  
SAMUEL H. SILVERMAN ◽  
CLAUDE MIGEON ◽  
EUGENIA ROSEMBERG ◽  
LAWSON WILKINS
Keyword(s):  
Sexual Development ◽  
Present Report ◽  
Bone Age ◽  
Vaginal Smears ◽  
Laboratory Findings ◽  
Sexual Precocity ◽  
Precocious Adrenarche ◽  
Premature Pubarche ◽  
Urinary Estrogens ◽  
Secondary Sexual

GROWTH of sexual hair in a young child suggests the possibility that adrenal tumor or hyperplasia may be causing virilization or that true sexual precocity may be beginning. However, neither of these relatively serious conditions may exist. Approximately 10 years ago workers in the Endocrine Clinic of the Harriet Lane Home became aware of the fact that sexual hair may appear in early life long before there is any other secondary sexual development dependent upon either androgen or estrogen. Although this syndrome has been referred to briefly in textbooks as "precocious adrenarche" and "premature pubarche," no detailed studies of a series of cases have been recorded. The present report is based on a study of 29 children who developed sexual hair before the age of 8 years. It was possible to follow a number of these patients long enough to demonstrate that the condition is a benign variation in the pattern of sexual development and is followed later by normal adolescence. It seems important to bring the findings to the attention of pediatricians who may not be familiar with the syndrome and to discuss its differential diagnosis and probable etiology. Methods Urinary 17-ketosteroids (17-KS) were determined by a modification of the method of Callow, Callow and Emmons previously described, urinary estrogens were measured as the "fluorogenic phenols" by the method of Jailer. Vaginal smears stained by the method of Shorr were interpreted as described elsewhere. The "bone age" was based on the average epiphysial development at all the joints. Clinical and Laboratory Findings

Feminizing/demasculinizing effects of polychlorinated biphenyls on the secondary sexual development of Xenopus laevis

2007 ◽  
Vol 84 (3) ◽  
pp. 321-327 ◽  
Author(s):  
Zhan-Fen Qin ◽  
Xiao-Fei Qin ◽  
Lei Yang ◽  
Han-Ting Li ◽  
Xing-Ru Zhao ◽  
...  
Keyword(s):  
Xenopus Laevis ◽  
Polychlorinated Biphenyls ◽  
Sexual Development ◽  
Secondary Sexual

scholarly journals Meier-Gorlin syndrome: Growth and secondary sexual development of a microcephalic primordial dwarfism disorder

2012 ◽  
Vol 158A (11) ◽  
pp. 2733-2742 ◽  
Author(s):  
Sonja A. de Munnik ◽  
Barto J. Otten ◽  
Jeroen Schoots ◽  
Louise S. Bicknell ◽  
Salim Aftimos ◽  
...  
Keyword(s):  
Sexual Development ◽  
Gorlin Syndrome ◽  
Primordial Dwarfism ◽  
Secondary Sexual

Elevation of plasma cortisol during the spawning migration of landlocked kokanee salmon (Oncorhynchus nerka kennerlyi)

2000 ◽  
Vol 127 (2) ◽  
pp. 123-131 ◽  
Author(s):  
Laura L Carruth ◽  
Robert M Dores ◽  
Tammy A Maldonado ◽  
David O Norris ◽  
Tina Ruth ◽  
...  
Keyword(s):  
Plasma Cortisol ◽  
Oncorhynchus Nerka ◽  
Spawning Migration ◽  
Kokanee Salmon

Impact of the Introduction of Kokanee (Oncorhynchus nerka) and Opossum Shrimp (Mysis relicta) on a Subalpine Lake

1978 ◽  
Vol 35 (12) ◽  
pp. 1572-1579 ◽  
Author(s):  
Mark D. Morgan ◽  
Stephen T. Threlkeld ◽  
Charles R. Goldman
Keyword(s):  
Population Dynamics ◽  
Lake Trout ◽  
Oncorhynchus Nerka ◽  
Food Sources ◽  
Mysis Relicta ◽  
Kokanee Salmon ◽  
Opossum Shrimp ◽  
Cladoceran Species ◽  
Subalpine Lake ◽  
The Impact

Introductions of opossum shrimp (Mysis relicta) and kokanee salmon (Oncorhynchus nerka) are common management tools for improvement of local sport fisheries. This paper summarizes published information from varied sources and presents supplemental data on the impact of these introductions on the Lake Tahoe zooplankton and fish communities. Concomitant with peak spawning runs of kokanee and the establishment and high densities of Mysis was the disappearance of the three pelagic cladoceran species in the lake. Population dynamics analysis of the cladoceran populations indicate that their elimination was due to increasing death rates (related to Mysis and kokanee predation) and decreasing birth rates (possibly related to cultural eutrophication). Changes have also been observed in the fish populations. Lake trout have altered their food habits to include large quantities of Mysis, but this has been done to the exclusion of other prey types. Thus, improvement in lake trout condition has been indicated only in years when Mysis is abundant. Recent evidence of a sustained decline in the mysid population suggests that unless lake trout shift back to more traditional food sources, their condition could deteriorate to below pre-mysid levels. Finally, mean weight and abundance of kokanee spawners have declined since the cladoceran disappearance, suggesting a negative impact on the whole population which fed heavily on cladocerans. Key words: opossum shrimp, kokanee salmon, population dynamics, cladoceran decline, introductions, subalpine lake

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