Derek William Yalden B.Sc., Ph.D. | |
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![]() Yalden at the BTO Conference in 2010 | |
Born | Surrey, England | 4 November 1940
Died | 5 February 2013 72) | (aged
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Nationality | British |
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Occupations | |
Employer(s) | University of Manchester, School of Biological Sciences |
Known for | President of The Mammal Society |
Derek William Yalden (4 November 1940 – 5 February 2013) [1] was an eminent British zoologist and academic. He was an honorary header at the University of Manchester. [2]
After obtaining a 1st Class B.Sc. University College London in 1962, he completed his PhD on carpal bones in mammals at Royal Holloway College, under P. M. Butler, in 1965. [3] He then worked as an Assistant Lecturer, and eventually Senior Lecturer, at the University of Manchester, School of Biological Sciences, [4] teaching vertebrate zoology. [5] He retired from there in 2005, after 40 years' service. [5]
He was president of The Mammal Society [5] [6] from 1997 until his death, and edited their journal, Mammal Review from 1980–2002. [4] He authored or co-authored over 200 scientific publications. [5]
Leptopelis yaldeni , (grassland forest tree frog, named by M. Largen in 1977), and Desmomys yaldeni (Yalden's desmomys, a rodent named by L. Lavrenchenko in 2003) are named in his honour. [5] Both are endemic to Ethiopia.
An expert in the mammals of the UK and of Ethiopia, Yalden also took hundreds of students on field courses. To honour his memory, a fund has been set up to provide undergraduates from limited income families with financial support to help fund their field trips whilst studying at Manchester. [7]
Yalden listed his research interests as:
The stoat, also known as the Eurasian ermine or ermine, is a species of mustelid native to Eurasia and the northern regions of North America. Because of its wide circumpolar distribution, it is listed as Least Concern on the IUCN Red List. The name ermine is used especially in its pure white winter coat of the stoat or its fur. Ermine fur was used in the 15th century by Catholic monarchs, who sometimes used it as the mozzetta cape. It has long been used on the ceremonial robes of members of the United Kingdom House of Lords. It was also used in capes on images such as the Infant Jesus of Prague.
The glossy ibis is a water bird in the order Pelecaniformes and the ibis and spoonbill family Threskiornithidae. The scientific name derives from Ancient Greek plegados and Latin, falcis, both meaning "sickle" and referring to the distinctive shape of the bill.
The weasel war dance or mustelid war dance is a colloquial term for the behavior of excited ferrets and other members of the weasel subfamily. Naturalists speculate that weasels in the wild use the dance to confuse or disorient prey.
The wildcat is a species complex comprising two small wild cat species: the European wildcat and the African wildcat. The European wildcat inhabits forests in Europe, Anatolia and the Caucasus, while the African wildcat inhabits semi-arid landscapes and steppes in Africa, the Arabian Peninsula, Central Asia, into western India and western China. The wildcat species differ in fur pattern, tail, and size: the European wildcat has long fur and a bushy tail with a rounded tip; the smaller African wildcat is more faintly striped, has short sandy-gray fur and a tapering tail; the Asiatic wildcat is spotted.
The klipspringer is a small antelope found in eastern and southern Africa. The sole member of its genus and subfamily/tribe, the klipspringer was first described by German zoologist Eberhard August Wilhelm von Zimmermann in 1783. The klipspringer is a small, sturdy antelope; it reaches 43–60 centimetres at the shoulder and weighs from 8 to 18 kilograms. The coat of the klipspringer, yellowish gray to reddish brown, acts as an efficient camouflage in its rocky habitat. Unlike most other antelopes, the klipspringer has a thick and coarse coat with hollow, brittle hairs. The horns, short and spiky, typically measure 7.5–9 cm.
The least weasel, little weasel, common weasel, or simply weasel is the smallest member of the genus Mustela, family Mustelidae and order Carnivora. It is native to Eurasia, North America and North Africa, and has been introduced to New Zealand, Malta, Crete, the Azores, and São Tomé. It is classified as least concern by the IUCN, due to its wide distribution and large population throughout the Northern Hemisphere.
Manchester Museum is a museum displaying works of archaeology, anthropology and natural history and is owned by the University of Manchester, in England. Sited on Oxford Road (A34) at the heart of the university's group of neo-Gothic buildings, it provides access to about 4.5 million items from every continent. It is the UK’s largest university museum and serves both as a major visitor attraction and as a resource for academic research and teaching. It has around 430,000 visitors each year.
The European hedgehog, also known as the West European hedgehog or common hedgehog, is a hedgehog species native to Europe from Iberia and Italy northwards into Scandinavia and westwards into the British Isles. It is a generally common and widely distributed species that can survive across a wide range of habitat types. It is a well-known species, and a favourite in European gardens, both for its endearing appearance and its preference for eating a range of garden pests. While populations are currently stable across much of its range, it is declining severely in Great Britain where it is now Red Listed, meaning that it is considered to be at risk of local extinction. Outside its native range, the species was introduced to New Zealand during the late nineteenth and early twentieth centuries.
The American mink is a semiaquatic species of mustelid native to North America, though human introduction has expanded its range to many parts of Europe, Asia, and South America. Because of range expansion, the American mink is classed as a least-concern species by the IUCN. The American mink was formerly thought to be the only extant member of the genus Neovison following the extinction of the sea mink (N. macrodon), but recent studies, followed by taxonomic authorities, have reclassified it and the sea mink within the genus Neogale, which also contains a few New World weasel species. The American mink is a carnivore that feeds on rodents, fish, crustaceans, frogs, and birds. In its introduced range in Europe it has been classified as an invasive species linked to declines in European mink, Pyrenean desman, and water vole populations. It is the animal most frequently farmed for its fur, exceeding the silver fox, sable, marten, and skunk in economic importance.
The marsh mongoose, also called water mongoose is a medium-sized mongoose species native to sub-Saharan Africa that inhabits freshwater wetlands. It has been listed as Least Concern on the IUCN Red List since 2008.
The lesser white-toothed shrew is a small species of shrew with a widespread distribution in Africa, Asia and Europe. Its preferred habitat is scrub and gardens and it feeds on insects, arachnids, worms, gastropods, newts and small rodents, though its diet usually varies according to the biotope where it lives. The closely related Asian lesser white-toothed shrew was once included in this species, but is now considered to be a separate species.
African vlei rats (Otomys), also known as groove-toothed rats, live in many areas of sub-Saharan Africa. Most species live in marshlands, grasslands, and similar habitats and feed on the vegetation of such areas, occasionally supplementing it with roots and seeds. The name "vlei" refers to the South African term for intermittent, seasonal, or perennial bodies of standing water.
Desmomys is a genus of rodent in the family Muridae endemic to Ethiopia. It contains the following species:
Yalden's rat is a species of rodent in the family Muridae, found only in Ethiopia, where its natural habitat is the montane forests. It is threatened by habitat loss.
Leptopelis yaldeni is a species of frog in the family Arthroleptidae. It is endemic to Ethiopia and occurs in the montane highlands in Gojjam. Its range might be limited by the deep gorges of the Blue Nile. It is named in honour of Derek Yalden, a British zoologist who collected some of the types. Common names Yalden's tree frog and grassland forest treefrog have been coined for this species.
The Ethiopian hare is a species of mammal in the family Leporidae. It was first described in 1903, by the British mammalogist Oldfield Thomas. The dorsal pelage is brownish buff, and is finely grizzled with black. The ventral pelage is fluffy and white in colour. Endemic to Ethiopia, it is found in the Afromontane Biozone of Ethiopia, and in the borders of the Sudanian Savanna Biozone. It is rated as a least concern species by the International Union for Conservation of Nature.
The North African elephant is an extinct subspecies of the African bush elephant, or possibly a separate elephant species, that existed in North Africa, north of the Sahara, until it died out in Roman times. These were the famous war elephants used by Carthage in the Punic Wars, their conflict with the Roman Republic. Although the subspecies has been formally described, it has not been widely recognized by taxonomists. Other names for this animal include the North African forest elephant, Carthaginian elephant, and Atlas elephant. Its natural range probably extended along the coast of the Red Sea, in what is now Egypt, Sudan, and Eritrea, but it may have extended further across northern Africa.
William Brunsdon Yapp was an English zoologist and author who worked as a senior lecturer in zoology at the University of Birmingham. Among his major works was a study of the birds illustrated in medieval English works including the Bayeux Tapestry.
A polecat–ferret hybrid is a hybrid between a wild European polecat and a domesticated ferret. Offspring of such a cross between the two animals typically have a distinct white throat patch, white feet and white hairs interspersed among the fur. It is currently impossible to distinguish pure polecats from hybrids through DNA analysis, as the two forms are too closely related and inter-mixed to be separated through current (2010) genetic methods.
Arvicanthini is a tribe of muroid rodents in the subfamily Murinae. Almost all recent species in this tribe are or were found in Africa aside from one species, the Indian bush rat, which is found in South Asia and Iran. However, some fossil Golunda species from India and the genus Parapelomys are thought to have also occurred outside Africa, and one species in the fossil genus Saidomys may have also occurred in Afghanistan.