Rediscovering hermaphroditism in Grammatidae with the description of the testicular gland in Brazilian Basslet Gramma brasiliensis
Abstract Many aspects of sex change in reef fishes have been studied, including behavior and social organization. However, gonad histology remains the most robust way to identify sexual patterns in fishes. Some uncommon tissues remain poorly described, such as the accessory gonadal structures found in species from the Gobiidae family, which are rare in other bony fishes. This is the first report of the testicular gland in Gramma brasiliensis and for the Grammatidae family. Between April 2011 and February 2012 eighty specimens were collected during four dive campaigns on the Taipus de Fora reef (13°56’20”S 38°55’32”W), Bahia, Northeast Brazil, and their sex was determined. Thirteen per cent of the active-females and 90% of the active-males had testicular gland tissue in their ovotestis. This discovery led to additional research into the characteristics of the gland tissue and its relationship with gonadal maturation. Three patterns of testicular gland development were found in Brazilian basslet ovotestis. Both ova and sperm-producing gonad contained testicular gland tissue, and the appearance of this tissue seems to be the first modification of ovotestis tissue marking the beginning of the protogynous sex-change process in G. brasiliensis.
Main Authors: | Leite,J. R., Freitas,M. O., Sanches,E. G., Gomes,M. L. M., Hostim-Silva,M., Cole,K. S. |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Instituto Internacional de Ecologia
2016
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842016000300743 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
First record of the basslet Gramma dejongi outside of Cuba
by: Lohr, K.E., et al.
Published: (2013) -
Grammatidae cabrilletas
Published: (2010) -
Histogénèse et structure de la glande hermaphrodite d'Helix pomatia (Linn.)
by: Ancel, Paul
Published: (1903) -
Rediscovering coffee culture
by: 98888 Neelakandan, M.A.
Published: (Abr ) -
The living marine resources of the western central atlantic. bony fishes (acipenseridae to grammatidae)
by: Carpenter, Kent E. (ed.)
Published: (2002)