ISSN:
1573-5133
Keywords:
Labrid
;
Protogynous hermaphroditism
;
Reproductive season
;
Courtship
;
Social structure
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Synopsis The reproductive biology of the concha wrasse, Nelabrichthys ornatus, at Tristan da Cunha in the South Atlantic Ocean is described. Histological evidence shows that the species is a monandric protogynous hermaphrodite. N. ornatus displays full permanent sexual dichromatism with all males occurring in the upper size classes of the population. Size specific habitat preference is described. Aspects of the mating system of the species resemble a lek although the possibility of mating site selection by females is not discounted. Spawning groups have a sex ratio of between 4 and 7 females per male.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00005215
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