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Chemical communication in tilapia: a comparison of Oreochromis mossambicus with O. niloticus

2014-10-01Journal article Open access
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dc.contributor.authorHubbard, Peter
dc.contributor.authorMota, Vasco
dc.contributor.authorKeller-Costa, Tina
dc.contributor.authorSilva, José P. da
dc.contributor.authorCanario, Adelino V. M.
dc.date.accessioned2014-12-12T12:09:37Z
dc.date.available2014-12-12T12:09:37Z
dc.date.issued2014-10-01
dc.description.abstractIn allopatric speciation species differentiation generally results from different selective pressures in different environments, and identifying the traits responsible helps to understand the isolation mechanism(s) involved. Male Mozambique tilapia (Oreochromis mossambicus) use urine to signal dominance; furthermore, 5-pregnane-3,17,20-triol-3-glucuronide (and its -epimer, 5-pregnane-3,17,20-triol-3-glucuronide), in their urine is a potent pheromone, the concentration of which is correlated with social status. The Nile tilapia (O. niloticus) is a close relative; species divergence probably resulted from geographical separation around 6 million years ago. This raises the question of whether the two species use similar urinary chemical cues during reproduction. The olfactory potency of urine, and crude extracts, from either species was assessed by the electro-olfactogram and the presence of the steroid glucuronides in urine from the Nile tilapia by liquid-chromatography/mass spectrometry. Both species showed similar olfactory sensitivity to urine and respective extracts from either species, and similar sensitivity to the steroid glucuronides. 5-pregnan-3,17,20-triol-3-glucuronide was present at high concentrations (approaching 0.5 mM) in urine from Nile tilapia, with 5-pregnan-3,17,20-triol-3-glucuronide present at lower concentrations, similar to the Mozambique tilapia. Both species also had similar olfactory sensitivity to estradiol-3-glucuronide, a putative urinary cue from females. Together, these results support the idea that reproductive chemical cues have not been subjected to differing selective pressure. Whether these chemical cues have the same physiological and behavioural roles in O. niloticus as O. mossambicus remains to be investigated.por
dc.identifier.doihttp://dx.doi.org/10.1016/j.ygcen.2014.06.022
dc.identifier.issn0016-6480
dc.identifier.otherAUT: ACA00258
dc.identifier.urihttp://hdl.handle.net/10400.1/5681
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://ac.els-cdn.com/S001664801400255X/1-s2.0-S001664801400255X-main.pdf?_tid=ec59f354-81f5-11e4-b664-00000aacb35f&acdnat=1418385576_79ac76128b8ff7d461690e7279023fd6por
dc.subjectCichlidpor
dc.subjectPheromonepor
dc.subjectSteroidpor
dc.subjectUrinepor
dc.subjectOlfactionpor
dc.subjectSpeciationpor
dc.titleChemical communication in tilapia: a comparison of Oreochromis mossambicus with O. niloticuspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage20por
oaire.citation.startPage13por
oaire.citation.titleGeneral and comparative endocrinologypor
oaire.citation.volume207por
person.familyNameHubbard
person.familyNameMota
person.familyNameKeller-Costa
person.familyNameSilva
person.familyNameCanario
person.givenNamePeter
person.givenNameVasco
person.givenNameTina
person.givenNameJosé Paulo da
person.givenNameAdelino
person.identifier143624
person.identifier.ciencia-id951F-BA4B-A21F
person.identifier.ciencia-id9319-A7D5-5335
person.identifier.ciencia-id3413-C4F4-73F7
person.identifier.ciencia-id1F1E-D3B3-F804
person.identifier.orcid0000-0002-3007-4647
person.identifier.orcid0000-0002-9718-6440
person.identifier.orcid0000-0003-3702-9192
person.identifier.orcid0000-0002-6458-7328
person.identifier.orcid0000-0002-6244-6468
person.identifier.ridB-2823-2008
person.identifier.ridE-2905-2019
person.identifier.ridA-4606-2008
person.identifier.ridC-7942-2009
person.identifier.scopus-author-id7005928467
person.identifier.scopus-author-id56255184300
person.identifier.scopus-author-id7201733236
person.identifier.scopus-author-id56568523700
rcaap.rightsopenAccesspor
rcaap.typearticlepor
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