Перейти к содержимому

Birds: North America Lost 3 Billion Birds — The Species Behind It Are Not the Ones You’d Guess

AMERICAN WILDLAND

0:00 / 0:00

Birds: North America Lost 3 Billion Birds — The Species Behind It Are Not the Ones You’d Guess

27 просмотров · 9 дней назад
AMERICAN WILDLAND
32 подписчика
27 просмотров · 9 дней назад
Birds: North America Lost 3 Billion Birds — The Species Behind It Are Not the Ones You’d Guess. By the early 1990s the Florida panther was down to a few dozen animals in a single population, and biologists were documenting something beyond low numbers: kinked tails, heart murmurs, reproductive abnormalities, and immune problems appearing consistently across the remaining cats. The population was not just small. It was running out of genetic variation. This investigation covers the intervention and the argument around it: what inbreeding depression physically does to a large carnivore, how the historical connection to Texas cougar populations shaped the decision, how the eight released females were selected and monitored, what happened to the defect rates in the generations that followed, and the objection that the resulting animals are no longer the same subspecies. 📍 In this investigation: • The specific defects that were being recorded, and how consistently • Why Texas, and why eight • What the follow-up genetic monitoring found • How the population responded numerically over the following decades • The subspecies objection, and how managers answer it 📚 Sources: Florida Fish and Wildlife Conservation Commission, US Fish and Wildlife Service, published conservation genetics research. Full list below. #FloridaPanther #GeneticRescue #Florida