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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Evolution of spermatophore transfer mechanisms in cephalopods

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Amoroso Rodriguez Marian, Jose Eduardo [1]
Total Authors: 1
[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, Sao Paulo - Brazil
Total Affiliations: 1
Document type: Review article
Source: Journal of Natural History; v. 49, n. 21-24, SI, p. 1423-1455, APR 30 2015.
Web of Science Citations: 7

Spermatophores from coleoid cephalopods are capable of functioning autonomously during mating, attaching themselves to the female body through the ``spermatophoric reaction{''}. In decapodiforms this attachment involves some varying degree of implantation into female tissue, herein divided into shallow and deep implantation. This paper reviews the literature concerning the phenomenon of spermatophore implantation, and presents evidence corroborating a theoretical model ascribing the role of implantation to the ejaculatory apparatus, an invaginated tube found in the spermatophore oral region. In light of parsimonious character optimizations performed on published phylogenetic trees, two hypotheses for the evolution of spermatophore transfer mechanisms are tested. One hypothesis assumes that deep implantation arose first, shallow implantation evolving later associated with the emergence of specialized receptacles. The second hypothesis assumes that shallow implantation emerged first, deep implantation arising later, possibly associated with the adoption of deep-water lifestyles. Support for each hypothesis is dependent upon the phylogeny under consideration. (AU)

FAPESP's process: 04/13212-7 - Reproductive biology of Loligo plei Blainville, 1823 (Cephalopoda: Loliginidae): descriptive and functional anatomy of the male and female reproductive systems and histological evidence
Grantee:José Eduardo Amoroso Rodriguez Marian
Support type: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 13/02653-1 - Evolution of sperm transfer mechanisms in cephalopods: adaptative convergences associated with habitat shifts in the marine environment?
Grantee:José Eduardo Amoroso Rodriguez Marian
Support type: Scholarships in Brazil - Post-Doctorate