Marochi, Murilo Zanetti and Masunari, Setuko and Schubart, Christoph D. (2017) Genetic and Morphological Differentiation of the Semiterrestrial Crab Armases angustipes (Brachyura: Sesarmidae) along the Brazilian Coast. BIOLOGICAL BULLETIN, 232 (1). pp. 30-44. ISSN 0006-3185, 1939-8697
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The genetic and morphometric population structures of the semiterrestrial crab Armases angustipes from along the Brazilian coast were examined. The influence of the Central South Equatorial Current on larval dispersal of A. angustipes also was evaluated. Six populations were sampled from estuarine areas in Sao Luis do Maranhao, Maranhao; Natal, Rio Grande do Norte; Maceio, Alagoas; Ilheus, Bahia; Aracruz, Espirito Santo; and Guaratuba, Parana. Patterns of genetic differentiation were assessed using DNA sequence data corresponding to parts of the mitochondrial cytochrome c oxidase subunit 1. Geometric morphometric techniques were used to evaluate morphological variation in shape and size of the carapace and right cheliped propodus. Our results revealed low genetic variability and lack of phylogeographic structure; geometric morphometrics showed statistically significant morphological differentiation and geographic structuring. Our data indicate the absence of possible barriers to gene flow for this mobile species, and no clear correlation of morphological or genetic variation with ocean currents and/or geographic distance. Our results also suggest that historical geological and climatological events and/or possible bottleneck effects influenced the current low genetic variability among the populations of A. angustipes.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INDO-WEST PACIFIC; FIDDLER-CRAB; LARVAL DISPERSAL; MANGROVE CRAB; GEOMETRIC MORPHOMETRICS; MARINE-INVERTEBRATES; POPULATION-STRUCTURE; DNA POLYMORPHISM; SOUTH-AMERICA; 1852 DECAPODA; |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:01 |
| Last Modified: | 27 Feb 2019 11:52 |
| URI: | https://pred.uni-regensburg.de/id/eprint/412 |
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