A globally threatened shark, Carcharias taurus, shows no population decline in South Africa
نویسندگان
چکیده
منابع مشابه
Mechanical properties of sand tiger shark (Carcharias taurus) vertebrae in relation to spinal deformity.
Approximately 35% of sand tiger sharks (Carcharias taurus) in public aquaria exhibit spinal deformities ranging from compressed vertebrae and loss of intervertebral space to dislocated spines with vertebral degeneration and massive spondylosis caused by excessive mineralization both within vertebrae and outside the notochordal sheath. To identify the mechanical basis of these deformities, verte...
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Sand tiger sharks (Carcharias taurus) have an unusual mode of reproduction, whereby the first embryos in each of the paired uteri to reach a certain size ('hatchlings') consume all of their smaller siblings during gestation ('embryonic cannibalism' or EC). If females commonly mate with multiple males ('behavioural polyandry') then litters could initially have multiple sires. It is possible, how...
متن کاملThe complete mitochondrial genome of the sand tiger shark, Carcharias taurus (Chondrichthyes, Odontaspididae).
The complete mitochondrial genome of the sand tiger shark consists of 16,773 bp and including 13 protein-coding genes, 2 ribosomal RNA, 22 transfer RNA genes, 1 replication origin region and 1 control region. The mitochondrial gene arrangement of the sand tiger shark is the same as the one observed in most vertebrates. Base composition of the genome is A (31.8%), T (28.7%), C (26.3%) and G (13....
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White sharks (Carcharodon carcharias) are apex predators that play an important role in the structure and stability of marine ecosystems. Despite their ecological importance and protected status, white sharks are still subject to lethal control to reduce the risk of shark bites for recreational water users. The Shark Spotters program, pioneered in Cape Town, South Africa, provides a non-lethal ...
متن کاملObservations on a lesser-known monogenean, Udonella myliobati, from a copepod parasite, Lepeophtheirus nataiensis, parasitizing the spotted ragged-tooth shark, Carcharias taurus, from South African waters
P.A.S. OLIVIER, S.M. DIPPENAAR, L.F. KHALIL & N.M . MOKGALONG. 2000. Observations on a lesser-known monogenean, Udonella myliobati, from a copepod parasite, Lepeophtheirus natalensis, parasitizing the spotted ragged-tooth shark, Carcharias taurus, from South African waters. Onderstepoort Journal of Veterinary Research, 67: 135-140 The phylogeny of the genus Udonella has been disputed for quite ...
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ژورنال
عنوان ژورنال: Scientific Reports
سال: 2020
ISSN: 2045-2322
DOI: 10.1038/s41598-020-75044-2