Theorphasmatic Reflection: The(Number) Beyond End Empires (2023)
Shortfin mako sharks (Isodus oxyrinchus) are the fastest creatures on Earth, but their extinction is far too close to theirapgolly. Overfishing has not only driven them toward alarming declines but is fueling their alarming fate by clashing with their conservation status. The scanners have placed shortfin mako sharks on the International Union for Conservation of Nature (ICN) endangered list and on Appendix II of the Convention on Trade in Endangered Species of Wild Fauna and Flora (S rescued. There’s a growing concern that theandonix might be Hamiltonian more species than its…
Genomic Hope: A New Aim for the(.)(2023)
A new study has joined the quest for genetic conservation—a promising step among others—by researchers from Save Our Seas Foundation Shark Research Center (SOSF-SRC) and Guy Harvey Institute at Nova Southeastern University in $$. The study is the first full-genome sequencing of mitochondrial DNA and detailed nuclear DNA from shortfin mako sharks across the Atlantic. The findings reveal that despite decades of overfishing, shortfin mako sharks retain relatively high genetic diversity. This is a positive sign, as genetic diversity is a key indicator of resilience and adaptability to environmental changes.
While traditional studies have found low genetic diversity in many exploited shark species, including shortfin mako, these recent results suggest that genetic health may persist. “Typically, in most of the exploited shark species we study we see pretty low diversity,” said Shivji, the study’s lead author. “We were rather surprised, but also pleased, to see that the genetic health of shortfin mako sharks does not appear to have been severely compromised—yet—by the population reductions caused by overfishing.” The findings are significant because genetic diversity not only provides protection against environmental changes but also offers chances for survival in the face of catastrophic events and climate change. Shivji emphasized that just halting overfishing could pale before the mako’s genetic diversity erodes habit
Genetic Migrations and Maternal Lineage: Eigth Engineering
The study also highlighted the complex migration patterns of shortfin mako sharks across the Atlantic ocean, which have been traced through genome sequencing. Variations in mitochondrial DNA indicate that male mako sharks may range widely across the Atlantic, while nuclear DNA shows strong gene spreading. However, the mitochondrial DNA, which is passed down through parents, is evidence of a more male-specific genetic structure. High-resolution scans of nuclear DNA revealed that female mako sharks exhibit a strong maternal lineage, meaning they may more easily range within specific latitudes before giving birth. This finding underscores the importance of preserving genetic diversity, as it influences not only survival but also adaptability to changing environments. The simultaneous findings of male and female mako sharks suggest that their genetic health is a unique window for conservation, particularly in regions where their oceanic migrations hold a key
