Secret life of rare antelope revealed

29 September 2018

Image copyright CHESTER ZOO

The world's largest forest antelope has been caught on camera in Uganda for the first time.

The elusive striped antelope, known as the lowland bongo, was snapped in dense forest near the border with the Democratic Republic of Congo.

Scientists say there could be more new discoveries in the remote, unexplored, lowland rainforest.

The forest-dwelling antelope is classed as Near Threatened on the extinction list, due to habitat loss and hunting.

Populations in central and western Africa have declined to about 30,000 individuals.

Continued

One-Quarter of Grouper Species Being Fished to Extinction

ScienceDaily (May 9, 2012) — Groupers, a family of fishes often found in coral reefs and prized for their quality of flesh, are facing critical threats to their survival. As part of the International Union for Conservation of Nature (IUCN) Species Survival Commission, a team of scientists has spent the past ten years assessing the status of 163 grouper species worldwide. They report that 20 species (12%) are at risk of extinction if current overfishing trends continue, and an additional 22 species (13%) are Near Threatened.

These findings were published online on April 28 in the journal Fish and Fisheries.

"Fish are one of the last animal resources commercially harvested from the wild by humans, and groupers are among the most desirable fishes," said Dr. Luiz Rocha, Curator of Ichthyology at the California Academy of Sciences, and one of the paper's authors. "Unfortunately, the false perception that marine resources are infinite is still common in our society, and in order to preserve groupers and other marine resources we need to reverse this old mentality."

The team estimates that at least 90,000,000 groupers were captured in 2009. This represents more than 275,000 metric tonnes of fish, an increase of 25% from 1999, and 1600% greater than 1950 figures. The Caribbean Sea, coastal Brazil, and Southeast Asia are home to a disproportionately high number of the 20 Threatened grouper species. (A species is considered "Threatened" if it is Critically Endangered, Endangered, or Vulnerable under IUCN criteria.)

Read on:  http://www.sciencedaily.com/releases/2012/05/120509154240.htm

Timor Bush-warbler rediscovered

Timor Bush-warbler - Courtesy of Birdlife

December 2011. There had been no confirmed field observations of Timor Bush-warbler Bradypterus timorensis since two specimens were collected on Mount Mutis, West Timor, in 1932. A paper published online in BirdLife's journal, Bird Conservation International(BCI), reports the rediscovery of the Timor Bush-warbler in Timor-Leste (East Timor) in 2009, prompted by the discovery of a previously unknown population of bush-warbler on the island of Alor, Indonesia, to the north.

Bush-warblers
Timor Bush-warbler was first recognised as a full species in 2000, when along with Russet Bush-warbler B. mandelli and Java Bush-warbler B. montis it was split from Benguet Bush-warbler B. seebohmi. The authors of the BCI paper assign all these species to the genus Locustella.

Loud singing
On Alor at least 13 male bush warblers were heard singing from shrub and grass beneath woodland and forest edge at 859-1,250 m. On Timor, at least 40 males were heard from tall grassland at 1,720-2,100 m.

The songs are loud and can be readily heard from at least 100 m. However, the birds on both islands were skulking and hard to observe, even while singing. Brief direct views on Alor noted a large, buff-brown, long-tailed bush-warbler. Birds were observed to walk or scurry, mouse-like, on the ground on thin shrub and grass stems. Although they can fly, they do so rarely and probably mostly under cover.

There were substantial differences in habitat use by bush-warblers on Alor and on Timor, presumably resulting from island-specific differences in habitat availability, elevation and land-use pressure. High grazing pressure and repeated fires ensure that there is little or no suitable habitat over much of Timor's montane habitat, except on steep slopes. There are few known threats to bush-warbler habitat on Alor, but ongoing assessments are needed.

Timor Bush-warbler
Timor Bush-warbler is considered Near Threatened by BirdLife on behalf of the IUCN Red List, but will now require re-evaluation. The Alor population is currently well isolated from Timor (c.100 km between sites), and these islands have never been connected. The populations have little chance of interbreeding and the authors of the BCI paper say they should be considered as independent, evolutionarily significant units. Further field surveys are needed on both Timor and Alor to capture birds, clarify taxonomic relationships using molecular approaches, and further define habitat use and conservation status.