Repository logo
 
Publication

Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: possible involvement of chemical communication

2006Journal article Restricted access
Simple item page
dc.contributor.authorHuertas, Mar
dc.contributor.authorScott, A. P.
dc.contributor.authorHubbard, Peter
dc.contributor.authorCanario, Adelino V. M.
dc.contributor.authorCerda, J.
dc.date.accessioned2014-05-15T09:33:01Z
dc.date.available2014-05-15T09:33:01Z
dc.date.issued2006
dc.date.updated2014-05-13T09:39:31Z
dc.description.abstractThis 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 Wsh 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 17 -estradiol (E2) in Finj. A small peak of plasma 17,20 -dihydroxypregn-4-en-3-one (17,20 P) occurred during ovulation, while the plasma levels of 17 -hydroxypregn-4- ene-3,20-dione (17P) were undetectable in both males and females. The water conditioned by Minj and Finj induced signiWcant, though relatively minor, increases in Io and GSI in uninjected males. In addition, uninjected Wsh 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 Wsh 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 identiWed.por
dc.identifier.citationHuertas, M.; Scott, A. P.; Hubbard, P. C.; Canario, A. V. M.; Cerda, J. Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: Possible involvement of chemical communication, General and Comparative Endocrinology, 147, 3, 304-313, 2006.por
dc.identifier.doihttp://dx.doi.org/10.1016/j.ygcen.2006.01.017
dc.identifier.issn0016-6480
dc.identifier.otherAUT: ACA00258;
dc.identifier.urihttp://hdl.handle.net/10400.1/3946
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.subjectOlfactionpor
dc.subjectPheromonepor
dc.subjectSteroid releasepor
dc.subjectPlasma steroidspor
dc.subjectSpermatogenesispor
dc.subjectOvulationpor
dc.subjectEelpor
dc.titleSexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males: possible involvement of chemical communicationpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage313por
oaire.citation.issue3por
oaire.citation.startPage304por
oaire.citation.titleGeneral and Comparative Endocrinologypor
oaire.citation.volume147por
person.familyNameHuertas
person.familyNameHubbard
person.familyNameCanario
person.givenNameMar
person.givenNamePeter
person.givenNameAdelino
person.identifier143624
person.identifier.ciencia-id951F-BA4B-A21F
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.orcid0000-0002-8042-086X
person.identifier.orcid0000-0002-3007-4647
person.identifier.orcid0000-0002-6244-6468
person.identifier.ridB-2898-2008
person.identifier.ridB-2823-2008
person.identifier.ridC-7942-2009
person.identifier.scopus-author-id7005928467
person.identifier.scopus-author-id56568523700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication230dcb48-8044-4986-ae3e-a76447972f40
relation.isAuthorOfPublicationf599b3ac-806b-4f65-9eb6-f70e68bcb142
relation.isAuthorOfPublication5f6e51ee-9113-469e-8b9e-f30f2d452521
relation.isAuthorOfPublication.latestForDiscovery5f6e51ee-9113-469e-8b9e-f30f2d452521

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Sexually mature European eels (Anguilla anguilla L.) stimulate gonadal development of neighbouring males Possible involvement of chemical communication.pdf
Size:
577.63 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.61 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

CCM2-Artigos (em revistas ou actas indexadas)