The first shark in the world born by parthenogenesis, it happened in the aquarium of Cala Gonone

The first shark in the world born by parthenogenesis, it happened in the aquarium of Cala Gonone
The first shark in the world born by parthenogenesis, it happened in the aquarium of Cala Gonone

The announcement was made by the managers of the facility and confirmed by the Experimental Zooprophylactic Institute of Piedmont, Liguria and Valle d’Aosta, which has completed the genetic analyzes on biological samples.

NUORO. A female shark of the Palombo species was born by parthenogenesis, ie without the fertilization of a male specimen, in the aquarium of Cala Gonone where Ispera was baptized. This is the first case in the world of a shark born without male fertilization. The news was announced by the aquarium managers of the Sardinian coastal center and confirmed by the experimental zooprophylactic institute of Piedmont, Liguria and Valle d’Aosta, which has completed the genetic analyzes on biological samples. «It is the first case in the world of scientifically documented virginal reproduction in this species – is written in the joint note of the press offices of the Cala Gonone aquarium and the Zooprophilatic Institute of northern Italy -. Last May, Ispera had come to light in the large pelagic tank of the Aquarium of Cala Gonone, which, in addition to groupers, amberjacks, and many other Mediterranean species, has been home to two adult female dogfish for about 10 years. To confirm the parthenogenesis and to define with certainty from which of the two females Ispera was born – which weighed 1200 grams and was 45 centimeters long – specific ‘microsatellite markers for this species’ were used.

Also in 2020 in the Sardinian aquarium another birth by parthenogenesis of a female shark took place, which unfortunately had not survived, but from which some biological material had been preserved. “But the extraordinary news – continues the press release – is that it was not Ispera’s mother who gave birth to the baby born in 2020, that is a year before Ispera, but the other adult female housed in the pelagic tank. So in the aquarium of Cala Gonone – underlines the note – there have been two cases of reproduction by parthenogenesis and this makes the event even more exceptional ». The birth of Ispera is excellent news for the scientific world “because the species, due to overfishing, is at serious risk of extinction, so much so that it has been included in the red list of the International Union for the conservation of nature (Iucn ) as a vulnerable species “. (Handle).

Source

shark world born parthenogenesis happened aquarium Cala Gonone

PREV people are going- Corriere.it
NEXT Betty White, the ‘Golden girl’ actress of American TV, was about to turn 100