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Full-Text Articles in Biology

Acoustic Telemetry Provides Insights For Improving Conservation And Management At A Spawning Aggregation Site Of The Endangered Nassau Grouper (Epinephelus Striatus), Richard S. Nemeth, Elizabeth Kadison, Jonathan Jossart, Mahmood Shivji, Bradley Wetherbee, Jordan Matley Mar 2023

Acoustic Telemetry Provides Insights For Improving Conservation And Management At A Spawning Aggregation Site Of The Endangered Nassau Grouper (Epinephelus Striatus), Richard S. Nemeth, Elizabeth Kadison, Jonathan Jossart, Mahmood Shivji, Bradley Wetherbee, Jordan Matley

Biology Faculty Articles

Nassau grouper (Epinephelus striatus, Serranidae) were one of the most important fishery species in the Caribbean, but are now listed as critically endangered. Population collapse in most places occurred primarily by fishers targeting their spawning aggregation sites, where thousands of fish gathered during full moon periods from December to April. Identifying management options for protecting this vulnerable period is crucial for their survival. In the US Virgin Islands, we tagged 24 Nassau grouper with acoustic transmitters at a fish spawning aggregation (FSA) site called the Grammanik Bank, a 1.5 km2, marine protected area (MPA) closed each year from …


Genomes Of Endangered Great Hammerhead And Shortfin Mako Sharks Reveal Historic Population Declines And High Levels Of Inbreeding In Great Hammerhead, Michael J. Stanhope, Kristina M. Ceres, Qi Sun, Minghui Wang, Jordan D. Zehr, Nicholas J. Marra, Aryn P. Wilder, Cheng Zou, Andrea M. Bernard, Paulina D. Pavinski Bitar, Mitchell G. Lokey, Mahmood Shivji Jan 2023

Genomes Of Endangered Great Hammerhead And Shortfin Mako Sharks Reveal Historic Population Declines And High Levels Of Inbreeding In Great Hammerhead, Michael J. Stanhope, Kristina M. Ceres, Qi Sun, Minghui Wang, Jordan D. Zehr, Nicholas J. Marra, Aryn P. Wilder, Cheng Zou, Andrea M. Bernard, Paulina D. Pavinski Bitar, Mitchell G. Lokey, Mahmood Shivji

Biology Faculty Articles

Despite increasing threats of extinction to Elasmobranchii (sharks and rays), whole genome-based conservation insights are lacking. Here, we present chromosome-level genome assemblies for the Critically Endangered great hammerhead (Sphyrna mokarran) and the Endangered shortfin mako (Isurus oxyrinchus) sharks, with genetic diversity and historical demographic comparisons to other shark species. The great hammerhead exhibited low genetic variation, with 8.7% of the 2.77 Gbp genome in runs of homozygosity (ROH) > 1 Mbp and 74.4% in ROH >100 kbp. The 4.98 Gbp shortfin mako genome had considerably greater diversity and 1 Mbp. Both these sharks experienced precipitous declines in …