Evolution of development type in benthic octopuses: holobenthic or pelago-benthic ancestor?
Author
dc.contributor.author
Ibáñez, C. M.
Author
dc.contributor.author
Peña, F
es_CL
Author
dc.contributor.author
Pardo Gandarillas, María Cecilia
es_CL
Author
dc.contributor.author
Méndez, M. A.
es_CL
Author
dc.contributor.author
Hernández, C. E.
es_CL
Author
dc.contributor.author
Poulin, Elie
Admission date
dc.date.accessioned
2014-12-30T03:15:38Z
Available date
dc.date.available
2014-12-30T03:15:38Z
Publication date
dc.date.issued
2014
Cita de ítem
dc.identifier.citation
Hydrobiologia (2014) 725:205–214
en_US
Identifier
dc.identifier.other
DOI: 10.1007/s10750-013-1518-5
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/119876
General note
dc.description
Artículo de publicación ISI
en_US
Abstract
dc.description.abstract
Octopuses of the family Octopodidae are
singular among cephalopods in their reproductive
behavior, showing two major reproductive strategies:
the first is the production of few and large eggs
resulting in well-developed benthic hatchlings (holobenthic
life history); the second strategy is the
production of numerous small eggs resulting in freeswimming
planktonic hatchlings (pelago-benthic life
history). Here, we utilize a Bayesian-based phylogenetic
comparative method using a robust molecular
phylogeny of 59 octopus species to reconstruct the
ancestral states of development type in benthic octopuses,
through the estimation of the most recent
common ancestors and the rate of gain and loss in
complexity (i.e., planktonic larvae) during the evolution.
Wefound a high probability that a free-swimming
hatchling was the ancestral state in benthic octopuses,
and a similar rate of gain and loss of planktonic larvae
through evolution. These results suggest that in benthic
octopuses the holobenthic strategy has evolved from an
ancestral pelago-benthic life history. During evolution,
the paralarval stage was reduced to well-developed
benthic hatchlings, which supports a ‘‘larva-first’’
hypothesis. We propose that the origin of the holobenthic
life history in benthic octopuses is associated with
colonization of cold and deep sea waters.
en_US
Patrocinador
dc.description.sponsorship
This work was partially funded by grants
to C.I. FONDECYT 3110152 and to E.P. ICM P05-002 and
PFB-23. Support to M.C. Pardo-Gandarillas by a MECESUPChile