2 results match your criteria: "and Earth Sciences The University of Southern Mississippi Hattiesburg Mississippi USA.[Affiliation]"
Gene expression, evolution, and the genetics of electrosensing in the smalltooth sawfish, .
Ecol Evol
May 2024
School of Biological, Environmental, and Earth Sciences The University of Southern Mississippi Hattiesburg Mississippi USA.
Article Synopsis
- Sawfishes are large, endangered rays recognized for their unique tooth-studded rostrums, with the smalltooth sawfish experiencing the most drastic habitat decline, now confined to about 20% of its original range.
- Recent research collected transcriptomic data from various tissue types of sawfishes and compared this to other elasmobranch species to better understand their genetics.
- Positive selection was found in 79 genes linked to growth factors and body symmetry, indicating these genes may play a role in sawfish adaptation to environmental factors and their advanced electrosensory systems.
From rivers to ocean basins: The role of ocean barriers and philopatry in the genetic structuring of a cosmopolitan coastal predator.
Ecol Evol
February 2023
Oceans and Atmosphere, CSIRO Hobart Tasmania Australia.
Article Synopsis
- The study examines the population structure of Bull Sharks globally, revealing reproductive isolation among different ocean basins and distinct island populations, such as those in Japan and Fiji.
- Through advanced DNA analysis, researchers found that Bull Sharks use shallow coastal waters for dispersal, while geographical barriers limit gene flow, which impacts their conservation.
- The findings highlight the vulnerability of local Bull Shark populations to overfishing, particularly among females that return to specific breeding areas, emphasizing the need for targeted management strategies to prevent local declines.