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Reconstruction of larval origins based on genetic relatedness and biophysical modeling

Journal Article · · Scientific Reports
 [1];  [2];  [3];  [4];  [5];  [4];  [6]
  1. National Museum of Natural History, Fort Pierce, FL (United States). Smithsonian Marine Station
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Fish and Wildlife Research Inst., St. Petersburg, FL (United States)
  4. Fish and Wildlife Research Inst., Marathon, FL (United States)
  5. Florida Atlantic Univ., Fort Pierce, FL (United States). Harbor Branch Oceanographic Inst.
  6. National Museum of Natural History, Fort Pierce, FL (United States). Smithsonian Marine Station; Rare, Arlington, VA (United States)
+ Show Author Affiliations

The assessment of the mechanisms and patterns of larval connectivity between geographically separated populations leads to a better understanding of benthic marine population dynamics, especially in commercially valuable species. This study investigated for the first time the fine-scale temporal genetic variability of new settlers and their origins in a benthic marine organism with one of the longest pelagic larval phases, the Caribbean spiny lobster (Panulirus argus). We genotyped newly settled postlarvae in the Florida Keys and adults of spiny lobster from the Florida Keys and throughout the Caribbean Sea. We identified strong larval connectivity between Dominican Republic, Belize, Nicaragua, the Florida Keys, and West-Florida. the larval dispersal modeling suggests that Florida’s lobster population could receive recruits from within and from other areas outside its state and national maritime boundaries. The genetic analyses refine the oceanographic model indicating that the connectivity patterns described could also result from unknown parental populations sourcing adults and postlarvae in different spawning seasons to the Florida Keys. We discuss the importance of small temporal scales to identify patterns in larval export. Our findings are significant on two levels. From the larval dispersal perspective, genetic results and biophysical modeling identify patterns of gene flow enhancing persistence of local populations. From an economic and fishery perspective, P. argus is the most important commercial species in the Caribbean and our results inform how considering larval source and sink dynamics across international boundaries could improve management plans at local, national, and regional levels.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE; National Oceanic and Atmospheric Administration (NOAA); ISG Summit Foundation
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1763366
Report Number(s):
PNNL-SA--143464
Journal Information:
Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 9; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

Checklist, Bibliography and Quantitative Data of the Arthropods of Hispaniola journal March 2020
Data from: Reconstruction of larval origins based on genetic relatedness and biophysical modeling dataset January 2019

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59 BASIC BIOLOGICAL SCIENCES
Florida
biophysical model
genetic
larval dispersal
molecular ecology
population dynamics
spiny lobster