Tag

Population Recovery

All articles tagged with #population recovery

Rougheye rockfish: a 200-year swimmer reshaping aging science and fisheries
science1 month ago

Rougheye rockfish: a 200-year swimmer reshaping aging science and fisheries

Rougheye rockfish in the deep North Pacific can live over 200 years. A 2021 Science study linked their extreme lifespan to both environmental factors (cold, deep water, large body size) and genetic factors, identifying 137 longevity-associated genes—many involved in DNA repair and insulin signaling—while noting the species matures around age 20 and can produce up to 700,000 eggs per year for up to 150 years. This slow life history makes them unusually vulnerable to overfishing, and removing the oldest individuals can hinder population recovery for centuries, underscoring the need for careful management.

Oregon Sea Stars Show Signs of Recovery After Disease-Induced Decline
environment8 months ago

Oregon Sea Stars Show Signs of Recovery After Disease-Induced Decline

Ochre sea stars along the Oregon coast are recovering after a decade of decline caused by a mysterious wasting disease, with recent studies showing a significant increase in young sea stars and a return to their ecological role as predators, although their size and population stability have not fully returned to pre-epidemic levels.

Unraveling the Enigma: The Mysterious Recovery of the Endangered Devils Hole Pupfish
environment3 years ago

Unraveling the Enigma: The Mysterious Recovery of the Endangered Devils Hole Pupfish

The rare and endangered Devils Hole pupfish, which resides in a small rocky pool in Death Valley National Park, has seen a population recovery in recent years. After hitting a low of 35 fish in 2013, the population has now stabilized at around 175 fish. The reasons behind this recovery remain somewhat of a mystery, but it may be attributed to disturbance events such as flash floods and earthquakes that have brought new nutrients and cleaned the rocky shelf that supports the fish. Wildlife managers have also provided supplemental food and shelter to aid in their survival. The Devils Hole pupfish is an iconic species and has played a significant role in water conservation and rights in the western United States.