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Title: Population genomic response to geographic gradients by widespread and endemic fishes of the Arabian Peninsula

Journal Article · · Ecology and Evolution
DOI:https://doi.org/10.1002/ece3.6199· OSTI ID:1815918
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]; ORCiD logo [5];  [6]; ORCiD logo [7]; ORCiD logo [8]; ORCiD logo [9]; ORCiD logo [10];  [11]; ORCiD logo [12]; ORCiD logo [13];  [14];  [15];  [16]
  1. King Abdullah University of Science and Technology (KAUST), Thuwal (Saudi Arabia); Curtin Univ., Perth, WA (Australia); Australian Museum Research Institute, Sydney (Australia)
  2. King Abdullah University of Science and Technology (KAUST), Thuwal (Saudi Arabia); Universidad Austral de Chile, Valdivia, (Chile)
  3. King Abdullah University of Science and Technology (KAUST), Thuwal (Saudi Arabia); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Univ. of Canterbury, Christchurch (New Zealand)
  5. Hawai‘i Institute of Marine Biology, Kāne‘ohe, HI, (United States)
  6. James Cook University, Townsville, QLD (Australia)
  7. California Academy of Sciences, San Francisco, CA (United States)
  8. California Academy of Sciences, San Francisco, CA (United States); Univ. of Central Florida, Orlando, FL (United States)
  9. Curtin Univ., Perth, WA (Australia); Univ. of Queensland, Brisbane, QLD (Australia)
  10. King Abdullah University of Science and Technology (KAUST), Thuwal (Saudi Arabia); Australian Institute of Marine Science, Townsville, QLD (Australia)
  11. Curtin Univ., Perth, WA (Australia)
  12. Univ. of Queensland, St. Lucia, QLD (Australia)
  13. King Abdullah University of Science and Technology (KAUST), Thuwal (Saudi Arabia); Univ. of Washington, Seattle, WA (United States)
  14. Univ. of Windsor, ON (Canada)
  15. John G. Shedd Aquarium, Chicago, IL (United States)
  16. King Abdullah University of Science and Technology (KAUST), Thuwal (Saudi Arabia)
+ Show Author Affiliations

Genetic structure within marine species may be driven by local adaptation to their environment, or alternatively by historical processes, such as geographic isolation. The gulfs and seas bordering the Arabian Peninsula offer an ideal setting to examine connectivity patterns in coral reef fishes with respect to environmental gradients and vicariance. The Red Sea is characterized by a unique marine fauna, historical periods of desiccation and isolation, as well as environmental gradients in salinity, temperature, and primary productivity that vary both by latitude and by season. The adjacent Arabian Sea is characterized by a sharper environmental gradient, ranging from extensive coral cover and warm temperatures in the southwest, to sparse coral cover, cooler temperatures, and seasonal upwelling in the northeast. Reef fish, however, are not confined to these seas, with some Red Sea fishes extending varying distances into the northern Arabian Sea, while their pelagic larvae are presumably capable of much greater dispersal. These species must therefore cope with a diversity of conditions that invoke the possibility of steep clines in natural selection. Here, we test for genetic structure in two widespread reef fish species (a butterflyfish and surgeonfish) and eight range-restricted butterflyfishes across the Red Sea and Arabian Sea using genome-wide single nucleotide polymorphisms. We performed multiple matrix regression with randomization analyses on genetic distances for all species, as well as reconstructed scenarios for population subdivision in the species with signatures of isolation. We found that (a) widespread species displayed more genetic subdivision than regional endemics and (b) this genetic structure was not correlated with contemporary environmental parameters but instead may reflect historical events. We propose that the endemic species may be adapted to a diversity of local conditions, but the widespread species are instead subject to ecological filtering where different combinations of genotypes persist under divergent ecological regimes.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1815918
Journal Information:
Ecology and Evolution, Vol. 10, Issue 10; ISSN 2045-7758
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Population genomic response to geographic gradients by widespread and endemic fishes of the Arabian Peninsula other January 2021
Population genomic response to geographic gradients by widespread and endemic fishes of the Arabian Peninsula other January 2021
Population genomic response to geographic gradients by widespread and endemic fishes of the Arabian Peninsula dataset January 2020

Linked Research (1)

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Related Subjects

59 BASIC BIOLOGICAL SCIENCES
butterflyfishes
coral reefs
ddRAD
Indo-West Pacific
single nucleotide polymorphism
vicariance