Protogynous hermaphroditism in the sand diver Trichonotus filamentosus.

Hermaphroditism

A Case of Hermaphroditism in the Mouse *

In a recent article Hooker and Strong described a hermaphrodite mouse which was a member of the C57 black strain. They also reviewed the cases of hermaphroditism in rodents which have been recorded in the literature.8 An additional case occurred recently in our laboratory in a mouse of the dilute brown strain. This animal was a descendant of a line in which sexual abnormalities have occurred pr...

Sex and hermaphroditism in the Penna model

I compared sexual(SX) and hermaphroditic(HA) reproduction schemes within the Penna model[1]. A fixed set of parameters was used, to make the results comparable with recent simulations[2]. I also reproduced the results for a selfemerging dominance[2] in an independant simulation for both hermaphroditic and sexual cases. A variation on partner selection was also implemented, this shifted stable p...

Gonad developmental cycle of Puntius filamentosus

In the present reprobiological study on Puntius filamentosus the spawning months of November and April coincided with North-East Monsoon (November) and South-West Monsoon (April) in India. The gross morphology of P. filamentosus showed 6 ovarian stages. The histological appearance of the ovaries showed ten stages (oogonia to atretic oocytes). The testes of Puntius filamentosus showed five morph...

Child with True Hermaphroditism

True hermaphrodites possess both ovarian and testicular tissues which may be present in separate gonads or combined in an ovotestis. External and internal genitalia are ambiguous and variable, though a prominent penial structure is usual. Chromosome examination of true hermaphroditism has revealed an XX sex chromosome complement in the majority of cases, but the XY complement and different mosa...