Age under-estimation in New Zealand porbeagle sharks (Lamna nasus
): is there an upper limit to ages that can be determined from shark vertebrae?
longimanus), porbeagle (Lamna nasus
), species of hammerhead shark (the
In cases of importation of shark species enumerated in CITES, namely sawfish (Pristidae spp), whale shark (Rhincodon typus), great hammerhead (Sphyrna mokarran), scalloped hammerhead (Sphyrna lewini), smooth hammerhead (Sphyrna zygaena), oceanic whitetip shark (Carcharinus longimanus), porbeagle (lamna nasus
), basking shark (Cetorhinus maximus), great white shark (Carcharodon carcharias), and manta rays (Manta spp), an export or re-export certificate from the administrative authority in the exporting country and an import valid certificate issued by the Ministry of Climate Change and Environment must be secured.
Reproduction, embryonic development, and growth of the porbeagle shark, Lamna nasus
, in the Southwest Pacific Ocean.
Along with blue sharks, porbeagles - Lamna nasus
in Latin - are the most common species of shark in UK waters.
Trade in and conservation of two Shark Species, Porbeagle (Lamna nasus
) and Spiny Dogfish (Squalus acanthias).
In the Atlantic, the porbeagle shark (Lamna nasus
) has a similar appearance to the white shark.
Porbeagle shark (Lamna nasus
), which lives in temperate waters and whose population has shrunk by 80% in recent decades, was the only one of the four commercial shark species for which stronger protection had been proposed to the CITES - in particular by the European Union - to make it through the committee procedure.
In addition to life history characteristics, night sharks exhibit population parameters that fall between those of the blue and porbeagle, Lamna nasus
For example young porbeagles (Lamna nasus
) are sometimes mistaken for shortfin makos because their teeth lack cusplets, and young white sharks are mistaken for porbeagles because their teeth partially lack serrated edges and show cusplets.
Abstract--The porbeagle (Lamna nasus
) is a slow-growing, late-maturing, long-lived pelagic shark that inhabits cold temperate waters.