Humpback whales found in the Arabian Sea are likely a distinct subspecies, having evolved in isolation for tens of thousands of years, according to a newly published genetic analysis. “Arabian Sea humpback whales have long been an enigma to the scientific community,” lead author Rita Amaral, from the Wildlife Conservation Society (WCS), said in a press release. “Their ecology is unlike that of any other known humpback whale population, and this new genetic work represents an important milestone in understanding how that uniqueness developed.” Humpback whales (Megaptera novaeangliae) are found throughout the world’s oceans, typically migrating from warm waters near the equator, where they breed, to the colder poles, where they feed. To date, scientists recognize three subspecies: the North Atlantic (M. n. novaeangliae), Southern Hemisphere (M. n. australis), and North Pacific (M. n. kuzira) humpback whales. Unlike most humpbacks, however, the population living in the Arabian Sea doesn’t migrate, remaining in tropical and subtropical waters all year. Researchers compared mitochondrial DNA, which mothers pass to their babies, collected from 2,285 humpback whales globally, including those from the Arabian Sea coast of Oman. The analysis showed considerable genetic differentiation between the latter population and the other subspecies. The researchers also found the Arabian Sea population had the lowest genetic diversity observed across any global ocean basin. The study estimates humpback whales in the Arabian Sea diverged from the other populations between roughly 43,000 and 113,000 years ago, suggesting a long history of isolation. Such isolation also makes them vulnerable to…This article was originally published on Mongabay

More than half of the world’s wild tulip species assessed so far are threatened with extinction, reports Mongabay’s Shreya Dasgupta. “For a flower this famous, it may surprise people how rare its wild relatives have become,” Brett Wilson, co-founder of the Wild Tulip Specialist Group at the IUCN, the global nature conservation authority, told Mongabay in an interview. Researchers have so far assessed the conservation status of 62 wild tulip species for the IUCN Red List, Wilson said. Of these, 32 are threatened with extinction. Most of the assessed species, 53, occur in Central Asia; five are critically endangered, seven endangered, 15 vulnerable, and 14 classified as near threatened. These at-risk wild tulips are concentrated in the massive Central Asian mountain systems of Tien Shan and Pamir-Alay, which Wilson calls the single richest region on Earth for tulip diversity. The biggest threats to most wild tulips are livestock overgrazing and climate change. Tulips grow underground as dormant bulbs in cold, harsh conditions, before emerging and flowering in spring. Grazing animals can trample tulip bulbs and eat the flowers before they produce seeds, Wilson said. Meanwhile, “a warming, drying climate is squeezing mountain species upslope with nowhere left to go while more unpredictable weather can lead to landslides and floods,” he added. Other threats including mining, infrastructure development, and overharvesting of bulbs from the wild, which affect specific species. The “classic victims of overcollection,” Wilson said, are the big, showy red-flowered species growing close to settlements. “Tulipa fosteriana in Uzbekistan and…This article was originally published on Mongabay

The reported death of a 28-year-old laboratory technician in eastern Siberia has triggered regional quarantines and international attention over fears of the cause of death and a lack of transparency. According to local media reports, Darya Shipilova, a technician employed at the Irkutsk Anti-Plague Research Institute of Siberia and the Far East, died on Oct. 2 at a regional hospital in the nearby town of Shelekhov. She had been diagnosed with pneumonia of “unknown” origin, according to Rospotrebnadzor, Russia’s public health agency. Local Russian media reported that Shipilova told medical staff she had accidentally dropped a test tube containing live bacteria while collecting samples. Rospotrebnadzor refuted claims of a biosafety reach, maintaining that tests detected no professional pathogens and there had been no complaints from other staff at the institute regarding infectious diseases in the past 10 days, Russian newspaper Kommersant reports. Russian authorities have reportedly quarantined the hospital and anyone who came into contact with the employee, according to the Associated Press (AP). AP also reports that Anna Popova, the head of Rospotrebnadzor, flew to Irkutsk for an emergency anti-epidemic meeting with the region’s Governor Igor Kobzev, who called the case a “particularly dangerous infection”. Local media have reported that more than 60 staff members at the Anti-Plague Institute were isolated inside their workplace. Unofficial reports, including those from the independent Russian media outlet Liudi Baikala, said that nearly 200 people were placed under medical observation or isolation. “Attention must be paid to the reported illness and death of…This article was originally published on Mongabay