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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.)

ONTOGENETIC AND EVOLUTIONARY CHANGE OF EXTERNAL MORPHOLOGY OF THE NEOTROPICAL SHRIMP POTIMIRIM (HOLTHUIS, 1954) EXPLAINED BY A MOLECULAR PHYLOGENY OF THE GENUS

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Author(s):
Torati, Lucas Simon [1] ; Mantelatto, Fernando L. [2]
Total Authors: 2
Affiliation:
[1] EMBRAPA Fisheries & Aquaculture, BR-77015012 Palmas, TO - Brazil
[2] Univ Sao Paulo, Lab Bioecol & Crustacean Systemat, Fac Philosophy Sci & Letters Ribeirao Preto FFCLR, Postgrad Program Comparat Biol, Dept Biol, BR-14040901 Ribeirao Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF CRUSTACEAN BIOLOGY; v. 32, n. 4, p. 625-640, JUL 2012.
Web of Science Citations: 10
Abstract

A phylogenetic analysis of a fragment of the mitochondrial gene 16S was used to test the monophyletic status of Potimirim. Existing doubts on the taxonomic status of brasiliana (once P glabra) and P potimirim (once P mexicana) were clarified. Potimirim mexicana and P potimirim are distinct species according to molecular data and appendix masculina morphology. A new species (Potimirim sp. 1) from Puerto Rico was revealed with molecular data, and it is evolutionarily related to P potimirim and P mexicana according to our analysis. We found out three distinct species under the name P glabra. Then, we recommend the application of the name P glabra for the populations of the Pacific slope of Central America and revalidation of P brasiliana for the Brazilian ones. The need for a new name to those ``P glabra{''} of the Caribbean is highlighted, and it was provisionally referred as Potimirim sp. 2. The ontogenetic (juveniles to adults) development of the appendix masculina of P brasiliana was observed and compared to the other species of Potimirim (adults). In the light of our phylogenetic hypothesis, we postulate a pattern of character addition for the evolution of the appendix masculina of Potimirim. This hypothesis is plausible for two key reasons. First. Potimirim is a monophyletic group according to our hypothesis. Second, the shape of appendix masculina found in adults of P. americana is similar and comparable to those found in the earliest juvenile stages of P brasiliana, a derived species according to our phylogeny (P americana, ((P mexicana, Potimirim sp. 1. P potimirim), (P glabra, (brasiliana, Potimirim sp. 2)))). As so, the basal P americana retain the ancestral morphological state of the appendix masculina when compared to the other species of Potimirim. In our interpretation the ontogeny of the appendix masculina recapitulated the proposed phylogeny, giving further support to it. (AU)

FAPESP's process: 09/54931-0 - Improvement and management of biological specimen collections at the Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo
Grantee:Carlos Alberto Garofalo
Support type: Research Infrastructure Program - Biological specimen collections
FAPESP's process: 10/50188-8 - Decapod crustaceans: multi-disciplinary characterization of the sea biodiversity of the State of São Paulo (taxonomy, spermiotaxonomy, molecular biology and population dynamics)
Grantee:Fernando Luis Medina Mantelatto
Support type: BIOTA-FAPESP Program - Thematic Grants