this migratory monarch butterfly (Danaus plexippus plexippusKnown for its spectacular annual voyage of up to 4,000 kilometers across the Americas), it has entered the International Union for Conservation of Nature’s (IUCN) ‘Red List of Threatened Species’ category.Endangered‘. The destruction of its habitat and climate change are the main reasons for the dramatic decline of this species..
The Red List currently contains 147,517 species, of which 41,459 are endangered. “Today’s Red List update highlights the fragility of nature’s wonders“It’s like the unique spectacle of monarch butterflies migrating thousands of kilometers,” said Bruno Oberle, Director-General of IUCN.
“To preserve the rich diversity of nature, we need protected and protected areas that are effectively and fairly managed. decisive action to respond to climate change and restore ecosystems. In turn, it supports communities by providing essential services such as biodiversity conservation, food, water and sustainable jobs,” he added.
The migratory monarch butterfly is a subspecies of the monarch butterfly (Danaus plexipus). Known for its winter migrations from Mexico and California to summer breeding grounds in the United States and Canada, the indigenous population has declined from 22% to 72% over the past decade.
Legal and illegal logging and deforestation Making room for agriculture and urban development has already destroyed most of the butterfly’s winter shelters in Mexico and California. pesticides and herbicides Kills milkweed, the host plant used in intensive farming by butterflies and monarch butterfly larvae throughout its species range.
Species on the brink of collapse
this climate change The migratory monarch has a significant impact and poses a serious threat. this drought limits the growth of milkweed and increases its frequency catastrophic forest fires.
Moreover, extreme temperatures trigger earlier migrationsWhile severe weather events killed millions of milkweed, before milkweed was found.
this western population species higher danger of extinctionAccording to the IUCN, from about 10 million to 1,914 individuals between 1980 and 2021, a decrease of 99.9%.
this eastern populationmajor also decreased by 84% between 1996 and 2014. There are questions as to whether there are enough butterflies left to sustain the population and prevent extinction.
“It is painful to see monarch butterflies and their extraordinary migration. on the verge of collapsebut there signs of hope. Many individuals and organizations have come together to protect this butterfly and its habitats,” said Anna Walker, a member of the IUCN-SSC Butterfly and Moth Expert Group and head of species survival at the New Mexico BioPark Association.
argued domestic milkweed plant, reduce pesticide uses, to support the protection of winter areas and social science. “We can all play a role in making sure this iconic insect is fully recovered,” he said.
It’s not the only animal in danger. A global reassessment reveals The 26 sturgeon species still existing in the world are already in danger of extinction.In 2009 it rose to 85%. Evaluations show that their decline over the past three generations has been steeper than previously thought.
Sturgeon endangered
this Yangtze sturgeon (acipenser dabryanus) upgraded from ‘Critically Endangered’ to ‘extinct in the wild‘, 17 species are now ‘Critically Endangered’, three are ‘Endangered’ and five are ‘Vulnerable’ on the IUCN Red List. The reassessment also confirmed the extinction of the Chinese shovelfish. (Psephurus gladius).
sturgeon over-harvested for their meat and caviar for centuries. Although protected by international law, poaching continues to affect more than half of sturgeon speciesand more strictly enforced regulations on the illegal sale of meat and caviar According to the IUCN, it is “essential” to halt further population loss of this animal.
Room Tiger It was re-evaluated with new figures revealing that there are currently 3,726 to 5,578 individuals in the wild worldwide. This 40% increase since the last tiger assessment in 2015, improvements in monitoring techniquesshows that more tigers remain than previously thought, and global numbers appear to be stable or increasing.
Again tiger still ‘Endangered’ Demographic trends on the IUCN Red List indicate that projects such as the IUCN Integrated Tiger Habitat Conservation Program have been successful and a recovery is possible as long as conservation efforts continue.
The main threats include: poaching poaching and legal hunting of tigers, their prey, and fragmentation and destruction of their habitat due to increased pressures from agriculture and human settlements.