A tree money grows on: the first inclusive molecular phylogeny of the economically important pink shrimp (Decapoda : Farfantepenaeus) reveals cryptic diversity
Laura Timm A D , Joan A. Browder B , Shaina Simon A , Thomas L. Jackson B , Ian C. Zink B C and Heather D. Bracken-Grissom A
+ Author Affiliations
- Author Affiliations
A Florida International University, Biscayne Bay Campus, 3000 NE 151st Street, Miami, FL 33181, USA.
B NOAA National Marine Fisheries Service, Southeast Fisheries Science Center, 75 Virginia Beach Drive, Miami, FL 33149, USA.
C University of Miami RSMAS CIMAS, 4600 Rickenbacker Causeway, Miami, FL 33149, USA.
D Corresponding author. Email: ltimm004@fiu.edu
Invertebrate Systematics 33(2) 488-500 https://doi.org/10.1071/IS18044
Submitted: 19 May 2018 Accepted: 7 November 2018 Published: 11 April 2019
Abstract
Species of Farfantepenaeus support economically important shrimp fisheries throughout the Western Hemisphere, necessitating proper fisheries management. To be effective, species management should be informed of the potential presence of cryptic species and of the evolutionary forces driving biodiversity. This is best accomplished through a robust phylogenetic framework and evidence-based species delimitation. This study represents the first comprehensive molecular phylogeny and species delimitation analyses of shrimps belonging to the genus Farfantepenaeus. Targeting three mitochondrial genes (12S, 16S, and COI), gene trees and a phylogeny for the genus were inferred using maximum likelihood and Bayesian approaches. In general, the phylogenetic relationships inferred here largely agree with those recovered from morphological data, including the most recent designation of F. isabelae as sister to F. subtilis. Molecular divergence was found between northern and southern populations of F. brasiliensis, suggesting the existence of unrecognised subspecies. However, previous recognition of F. duorarum and F. notialis as two distinct species was not supported by this study. The phylogeny inferred here also uncovers a phylogeographic signal of latitudinal speciation in the genus. The study presented here provides valuable insight into the evolutionary history of Farfantepenaeus, improving our ability to effectively manage these economically important species.
Additional keywords: fisheries management, genetics, penaeid.
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