Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication
10 pages, 8 figures
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Elsevier
2006-07
|
| Subjects: | Eel, Ovulation, Spermatogenesis, Plasma steroids, Steroid release, Olfaction, Pheromone, |
| Online Access: | http://hdl.handle.net/10261/20686 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
dig-icm-es-10261-20686 |
|---|---|
| record_format |
koha |
| spelling |
dig-icm-es-10261-206862020-11-12T09:06:07Z Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication Huertas, Mar Scott, Alexander P. Hubbard, Peter C. Canario, Adelino V. M. Cerdà, Joan Eel Ovulation Spermatogenesis Plasma steroids Steroid release Olfaction Pheromone 10 pages, 8 figures This study was aimed to investigate whether sexual maturation of immature male eels could be stimulated indirectly by placing them in contact with either male (Minj) or female (Finj) eels in which sexual maturation had been stimulated directly by weekly injections of human chorionic gonadotropin (hCG) or salmon pituitary extract (SPE), respectively. Untreated males were placed either in the same tank or in a separate tank that was linked to the injected fish via a recirculation system. The hormonal treatments stimulated spermatogenesis and spermiation in Minj, and ovulation in Finj as well as an increase of the ocular (Io) and gonadosomatic (GSI) indices in both sexes. Plasma levels of testosterone (T) and 11-ketotestosterone (11-KT) increased in Minj and T and 17β estradiol (E2) in Finj. A small peak of plasma 17,20β-dihydroxypregn-4-en-3-one (17,20βP) occurred during ovulation, while the plasma levels of 17α-hydroxypregn-4-ene-3,20-dione (17P) were undetectable in both males and females. The water conditioned by Minj and Finj induced significant, though relatively minor, increases in Io and GSI in uninjected males. In addition, uninjected fish showed small changes in plasma T and 11-KT levels, apparently related to the timing of spermiation and ovulation of Minj and Finj, respectively, as well as an activation of spermatogenesis (but not spermiation). Injected fish released free and conjugated T, 11-KT and E2 into the water, although immature eels were unable to smell (by electro-olfactogram) any of these steroids or prostaglandin F2 . However, immature males were highly sensitive to water extracts conditioned by spermiating Minj and pre-ovulatory and ovulated Finj. These preliminary results suggest the existence of chemical communication between maturing eels and immature males that stimulates gonad development, although the putative pheromone(s) involved has/have not yet been identified. This work was supported by grants from the Reference Center in Aquaculture (Generalitat de Catalunya, Spain) to J.C., and from Fundação para a Ciência e a Tecnologia (Portugal; POCTI/BSE/38815/2001, funded by European Union FSE/FEDER, and Ministério da Ciência e do Ensino Superior) to P.C.H., M.H., was recipient of a fellowship from the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA, Spain). Peer reviewed 2010-02-04T11:21:44Z 2010-02-04T11:21:44Z 2006-07 artículo http://purl.org/coar/resource_type/c_6501 General and Comparative Endocrinology 147(3): 304–313 (2006) 0016-6480 http://hdl.handle.net/10261/20686 10.1016/j.ygcen.2006.01.017 en https://doi.org/10.1016/j.ygcen.2006.01.017 none 22195 bytes application/pdf Elsevier |
| institution |
ICM ES |
| collection |
DSpace |
| country |
España |
| countrycode |
ES |
| component |
Bibliográfico |
| access |
En linea |
| databasecode |
dig-icm-es |
| tag |
biblioteca |
| region |
Europa del Sur |
| libraryname |
Biblioteca del ICM España |
| language |
English |
| topic |
Eel Ovulation Spermatogenesis Plasma steroids Steroid release Olfaction Pheromone Eel Ovulation Spermatogenesis Plasma steroids Steroid release Olfaction Pheromone |
| spellingShingle |
Eel Ovulation Spermatogenesis Plasma steroids Steroid release Olfaction Pheromone Eel Ovulation Spermatogenesis Plasma steroids Steroid release Olfaction Pheromone Huertas, Mar Scott, Alexander P. Hubbard, Peter C. Canario, Adelino V. M. Cerdà, Joan Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication |
| description |
10 pages, 8 figures |
| format |
artículo |
| topic_facet |
Eel Ovulation Spermatogenesis Plasma steroids Steroid release Olfaction Pheromone |
| author |
Huertas, Mar Scott, Alexander P. Hubbard, Peter C. Canario, Adelino V. M. Cerdà, Joan |
| author_facet |
Huertas, Mar Scott, Alexander P. Hubbard, Peter C. Canario, Adelino V. M. Cerdà, Joan |
| author_sort |
Huertas, Mar |
| title |
Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication |
| title_short |
Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication |
| title_full |
Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication |
| title_fullStr |
Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication |
| title_full_unstemmed |
Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication |
| title_sort |
sexually mature european eels (anguilla anguilla l.) stimulate gonadal development of neighbouring males: possible involvement of chemical communication |
| publisher |
Elsevier |
| publishDate |
2006-07 |
| url |
http://hdl.handle.net/10261/20686 |
| work_keys_str_mv |
AT huertasmar sexuallymatureeuropeaneelsanguillaanguillalstimulategonadaldevelopmentofneighbouringmalespossibleinvolvementofchemicalcommunication AT scottalexanderp sexuallymatureeuropeaneelsanguillaanguillalstimulategonadaldevelopmentofneighbouringmalespossibleinvolvementofchemicalcommunication AT hubbardpeterc sexuallymatureeuropeaneelsanguillaanguillalstimulategonadaldevelopmentofneighbouringmalespossibleinvolvementofchemicalcommunication AT canarioadelinovm sexuallymatureeuropeaneelsanguillaanguillalstimulategonadaldevelopmentofneighbouringmalespossibleinvolvementofchemicalcommunication AT cerdajoan sexuallymatureeuropeaneelsanguillaanguillalstimulategonadaldevelopmentofneighbouringmalespossibleinvolvementofchemicalcommunication |
| _version_ |
1777665719229480960 |