Percy Alexander Hulley | |
|---|---|
| Born | 23 February 1941 |
| Nationality |  South African |
| Alma mater | University of Cape Town |
| Known for | Describing the taillight shark |
| Spouse | Jane Charlotte Roberts [1] |
| Children | 3 [1] |
| Scientific career | |
| Fields | Zoology Ichthyology |
| Theses | |
Percy Alexander Hulley (born 23 February 1941) is a South African zoologist and ichthyologist. [2] . He is a research associate at the South African Museum and has described many species of fish including the taillight shark. [3]
Hulley completed his MSc in 1967 from the University of Cape Town with a thesis entitled: Studies on the anatomy of some South African Mytilidae (Bivalvia) with notes on their ecology and distribution. He submitted his PhD thesis in 1971 entitled: The origin, interrelationship and distribution of Southern African Rajidae (Chondrichthyes, Batoidei)
He has worked at the South African Museum since 1965, where he was deputy director (research) and curator of fishes at the South African Museum until 2005. From 2006, Hulley has worked at the South African Museum in an honorary capacity as a research associate. [4]
The comprehensive Mesopelagic Fish Collection of the South African museum was assembled primarily by Hulley. The collection contains fish that live between 200m and 1 000m below the surface. Mesopelagic fish constitutes 95% of the world’s fish biomass. [5]
Hulley has authored or co-authored more than 100 articles, reports and chapters for academic works, including:
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Hulley is honoured in the naming of a legskate and other fishes: [3]
Hulley discovered and named several other sharks and fish, amongst others:
Deep-sea fish are fish that live in the darkness below the sunlit surface waters, that is below the epipelagic or photic zone of the sea. The lanternfish is, by far, the most common deep-sea fish. Other deep sea fishes include the flashlight fish, cookiecutter shark, bristlemouths, anglerfish, viperfish, and some species of eelpout.
Barracudinas are any member of the marine mesopelagic fish family Paralepididae: 50 or so extant species are found almost worldwide in deep waters. Several genera are known only from fossils dating back to the Ypresian epoch.
Lanternfishes are small mesopelagic fish of the large family Myctophidae. One of two families in the order Myctophiformes, the Myctophidae are represented by 246 species in 33 genera, and are found in oceans worldwide. Lanternfishes are aptly named after their conspicuous use of bioluminescence. Their sister family, the Neoscopelidae, are much fewer in number but superficially very similar; at least one neoscopelid shares the common name "lanternfish": the large-scaled lantern fish, Neoscopelus macrolepidotus.
Ridgeheads, also known as bigscales, are a family of small, deep-sea stephanoberyciform fish. The family contains approximately 37 species in five genera; their distribution is worldwide, but ridgeheads are absent from the Arctic Ocean and Mediterranean Sea. Although the family is one of the most widespread and plentiful of deep-sea families, none of its members are of interest to commercial fishery.
Pelagic fish live in the pelagic zone of ocean or lake waters—being neither close to the bottom nor near the shore—in contrast with demersal fish that do live on or near the bottom, and reef fish that are associated with coral reefs.
Henry Bryant Bigelow was an American oceanographer and marine biologist.
The taillight shark is a little-known species of shark in the family Dalatiidae and the only member of its genus. It is known from only four specimens collected from deep oceanic waters in the southern Atlantic Ocean and Pacific Ocean. A small shark with a laterally compressed body and a bulbous snout, this species has unusual adaptations that indicate a specialized lifestyle: its pectoral fins are paddle-like and may be used for propulsion, unlike other sharks and it has a pouch-like gland on its abdomen that emits clouds of luminescent blue fluid. This shark is likely aplacental viviparous and a formidable predator for its size.
The bigthorn skate is a species of fish in the family Rajidae. It is found in Equatorial Guinea, Gambia, Ghana, Guinea, Guinea-Bissau, Mauritania, Morocco, Namibia, Senegal, Sierra Leone, South Africa, Western Sahara, possibly Angola, possibly Benin, possibly Cameroon, possibly the Republic of the Congo, possibly Ivory Coast, possibly Gabon, possibly Liberia, possibly Nigeria, and possibly Togo. Its natural habitat is open seas.
The deep scattering layer, sometimes referred to as the sound scattering layer, is a layer in the ocean consisting of a variety of marine animals. It was discovered through the use of sonar, as ships found a layer that scattered the sound and was thus sometimes mistaken for the seabed. For this reason it is sometimes called the false bottom or phantom bottom. It can be seen to rise and fall each day in keeping with diel vertical migration.
Notoscopelus bolini is a species of lanternfish in the family Myctophidae. It is found in the North Atlantic Ocean and the Mediterranean Sea. It was first described in 1975 by the American ichthyologist Basil Nafpaktitis and named in honour of the American marine biologist Rolf Ling Bolin who had reviewed the genus in 1959.
Lampadena speculigera is a species of lanternfish in the subfamily Lampanyctinae. It is a mesopelagic fish that is found in the Atlantic, Indian, and Pacific Oceans. Its vernacular name is mirror lanternfish.
The headlight fish is a species of lanternfish in the family Myctophidae. It is also sometimes referred to as the headlight lanternfish, or even the lanternfish, though it is not the only species to be called this.
Schnakenbeck's searsid is a species of fish in the family Platytroctidae (tubeshoulders).
Cocco's lantern fish, also called Gemellar's lanternfish, is a species of lanternfish.
A micronekton is a group of organisms of 2 to 20 cm in size which are able to swim independently of ocean currents. The word 'nekton' is derived from the Greek νήκτον, translit. nekton, meaning "to swim", and was coined by Ernst Haeckel in 1890.
Gerhard Krefft was a German ichthyologist and herpetologist.
Accompanied by Stehmann and P. Alexander Hulley (Table 1), Krefft used the opportunity to complement his former Atlantic midwater transects by conducting two more transects along 50° W and 40° W from the latitude of Montevideo to the ...
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