Protogynous hermaphroditism in the wrasse Choerodon azurio.

Demographic Variation between Colour Patterns in a Temperate Protogynous Hermaphrodite, the Ballan Wrasse Labrus bergylta

Fish populations are often treated as homogeneous units in typical fishery management, thereby tacitly ignoring potential intraspecific variation which can lead to imprecise management rules. However, intraspecific variation in life-history traits is widespread and related to a variety of factors. We investigated the comparative age-based demography of the two main colour patterns of Labrus ber...

Hermaphroditism

Identifying Conservation Strategies for Group-Spawning Coral Reef Fish in the Indo-Pacific, Using a Case Study of a Protogynous Giant Wrasse

Fish reproducing in group-spawning aggregations face intense fisheries during spawning events due to increased ease of capture. Other traits often associated with group spawning, such as late sexual maturation and sequential hermaphroditism, cause group-spawning species to be especially vulnerable to population declines, either because fishermen target large, reproductively mature specimens or ...

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...