| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] Univ Sao Paulo, Dept Biol, LBSC, FFCLRP, Av Bandeirantes 3900, BR-14040901 Ribeirao Preto, SP - Brazil
[2] Univ Louisiana Lafayette, Dept Biol, Lafayette, LA 70504 - USA
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | JOURNAL OF CRUSTACEAN BIOLOGY; v. 39, n. 4, p. 386-395, JUL 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
The mangrove crab Ucides cordatus (Linnaeus, 1763) is a keystone species in mangroves, and recent changes in population sizes have been attributed primarily to overharvest, selective capture, and loss of habitat due to destruction of mangroves. We analyzed genetic variability and phylogeographic pattern among populations of U. cordatus along the western Atlantic coast in order to document levels of genetic differentiation, aiming to provide data to be used in future management and conservation strategies. MtDNA cytochrome oxidase I (COI) was analyzed and compared among populations. We computed a haplotype network, haplotype and nucleotide diversities, index of fixation, Mantel test, analysis of molecular variance (AMOVA), neutrality tests, and pairwise mismatch distributions under the sudden expansion model of demographic expansion; Maximum likelihood phylogenetic reconstruction was also undertaken for the haplotypes found. We found no geographic structure and no significant indication for restricted gene flow between populations from sites along a distance of 12,000 km, indicating that sampled individuals currently represent a single panmictic population. Demographic results revealed demographic expansion along the evolutionary history of U. cordatus, probably related to climatic biogeographic events. Although there is no current evidence of any substantial genetic break or of demographic reduction between the western Atlantic populations that we investigated, the genetic signal of regional population depletion warrants future monitoring in the course of resource management. (AU) | |
| FAPESP's process: | 18/13685-5 - Integrative analysis of the Brazilian fauna of decapod crustaceans: taxonomy, phylogenetic systematics, spermiotaxonomy, morphology of post-embryonic development, ecology and conservation |
| Grantee: | Fernando Luis Medina Mantelatto |
| Support Opportunities: | BIOTA-FAPESP Program - Thematic Grants |
| FAPESP's process: | 12/06299-5 - Populational variability among decapod crustacean species from mangroves: morphological and molecular analysis |
| Grantee: | Raquel Correa Buranelli |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 14/11659-6 - Population variability of mangrove crabs in North America: morphological and molecular analyzes |
| Grantee: | Raquel Correa Buranelli |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |
| 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 Opportunities: | 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 Opportunities: | BIOTA-FAPESP Program - Thematic Grants |