Experimental studies have revealed that neonicotinoids pose potential risks for the nervous systems of non-target species, but the brain regions responsible for their behavioral effects remain incompletely understood. This study aimed to assess the neurobehavioral effects of clothianidin (CTD), a later neonicotinoid developed in 2001 and widely used worldwide, and to explore the target regions of neonicotinoids in the mammalian brain.
Striking, widespread and widely recognised, thanks in part to the Harry Potter books, the Snowy Owl Bubo scandiacus was previously listed as Least Concern, the lowest threat category of the IUCN Red List. However, this assessment was based on earlier figures that estimated the global population to number around 200,000 individuals, and the absence of evidence of significant declines.
Chilika lake is a brackish water lagoon, spread over the Puri, Khurda and Ganjam districts of Odisha state on the east coast of India, at the mouth of the Daya River, flowing into the Bay of Bengal, covering an area of over 1,100 km2. It is the largest coastal lagoon in India. The number of migratory birds has declined by 53,729 in Odisha’s Chilika and Nalabana Bird Sanctuary this winter as compared to previous year, the annual bird census revealed.
Despite $1 million worth of conservation efforts, U.S. Fish and Wildlife Service officials say Florida grasshopper sparrows (Ammodramus savannarum) are facing challenges in growing its population both in the wild and in captivity. The sparrow is largely endangered because of its dependence on its natural habitat: the dry prairies of central Florida. The subspecies was first discovered in 1902. However, it faced a population decline in the 1970s as prairie grasslands were converted to improve cattle pastures, sod production and other agricultural purposes.
In the summer of 2010, Henk Tennekes from Experimental Toxicology Services Nederland at Zutphen warned that the accumulation of neonicotinoids in the environment would not only decimate useful insects but also have a knock-on effect on other species, including birds (Curr. Biol. (2011) 21, R137–R139). At the time, Tennekes did not find much support for his views and went on to publish his warnings as a book — The Systemic Insecticides: A Disaster in the Making.
A 2015 study co-authored by Paul Ehrlich, professor emeritus of biology, and colleagues showed that Earth has entered an era of mass extinction unparalleled since the dinosaurs died out 66 million years ago. The specter of extinction hangs over about 41 percent of all amphibian species and 26 percent of all mammals, according to the International Union for Conservation of Nature (IUCN), which maintains a list of threatened and extinct species.
Three species of reptile on Christmas Island in Australia have been declared extinct in the wild, according to a study released on Tuesday. Lister's gecko (Lepidodactylus listeri), , the blue-tailed skink (Cryptoblepharus egeriae) and the Christmas Island forest-skink (Emoia nativitatis) were downgraded from "critically endangered" to "extinct in the wild" in the International Union for the Conservation of Nature's (IUCN) latest report. "The extinctions ...
The number of turtle dove (Streptopelia turtur) breeding pairs in the UK has dropped to a record low of 14,000, making an 84 percent drop since 1995."The turtle dove is the fastest declining bird in the country [England] and within ten years we could lose this icon of the British countryside completely,” said a spokesman for the Royal Society for the Protection of Birds. Turtle doves in the United Kingdom are found in just a few areas of Southern England and migrate during the winter toward Africa.
Though unnoticed by the world at large, a whole giant ecosystem is collapsing. It has taken us a lot of time to understand this catastrophe for two reasons: one cultural, one scientific. Firstly, we generally do not care for insects (bees and butterflies excepted). In the population as a whole there is little sympathy for the fate of the chitin-skeletoned little things that creep and crawl; our default reaction is a shudder. Fewer bugs in the world? Many would cheer.