The world's last male northern white rhino, Sudan, has died after “age-related complications” in Kenya, conservationists looking after his care have announced.

A statement from the Ol Pejeta Conservancy where Sudan lived said the 45-year-old rhino, who was suffering from muscle and bone deterioration and extensive skin wounds, was euthanised on Monday after his condition “worsened significantly”, leaving him unable to stand.

The rhino had spent two weeks in late February and early March lying in his pen due to discomfort from a deep wound on his right hind leg.

He had been part of an ambitious effort to save the subspecies from extinction with the help of its two surviving females, 27-year-old Najin and 17-year-old Fatu.

After all attempts at getting him to mate naturally failed, conservationists last year put Sudan on dating app Tinder, hoping to raise enough money to pay for a $9m (£6.4m) fertility treatment.

Sudan had previously lived at the Dver Kralove Zoo in the Czech Republic before being transported to Ol Pejeta where he lived with the last two females of his species.

Western Black Rhino declared extinct Show all 12 1 /12 Western Black Rhino declared extinct Western Black Rhino declared extinct 113809428.jpg The International Union for Conservation of Nature says the Western Black Rhino (pictured) is extinct and two other species of rhino are "possibly" extinct. Getty Images Western Black Rhino declared extinct Southern White Rhino subspecies _Ceratotherium simum simum_Dr Richard Emslie (2).JPG The Southern White Rhino of central Africa is now "possibly extinct" in the wild and firmly placed on the Red List of Threatened Species. Western Black Rhino declared extinct Summers Poison Frog_Ranitomeya summers_Jason Brown.jpg The Blessed Poison Frog (Ranitomeya benedicta) is currently listed as Vulnerable and the Summers' Poison Frog (pictured) (Ranitomeya summersi) is Endangered. Western Black Rhino declared extinct Tarzans Chameleon_ Calumma tarzan_Jörn Köhler.jpg The current Red List reveals that an alarming 40% of Madagascar’s terrestrial reptiles are threatened. The 22 Madagascan species currently identified as Critically Endangered, which include chameleons, geckoes, skinks and snakes, are now a conservation challenge. Encouragingly, there are new conservation areas being designated in Madagascar that will help conserve a significant proportion of Critically Endangered species, such as Tarzan’s Chameleon (Calumma tarzan) (pictured), the Bizarre-nosed Chameleon (Calumma hafahafa) and the Limbless Skink (Paracontias fasika). Western Black Rhino declared extinct Paroedura masobe_Franco Andreone.jpg The Paroedura masobe gecko is classed as "endangered" by the IUCN. Western Black Rhino declared extinct Giant Manta Ray_Manta birostris_Andrea Marshall.jpg Giant Manta Ray (Manta birostris), the largest species of rays, is also on the conservation group's Red List of Threatened Species and classed as "vulnerable". Western Black Rhino declared extinct Reef Manta Ray_Manta alfredi_Andrea Marshall.JPG The Reef Manta Ray is also on the conservation group's Red List of Threatened Species. Western Black Rhino declared extinct Coco der Mer_Lodoicea maldivica_Jean-Christophe Vie (2).JPG The majority of endemic flowering plants in the granitic Seychelles islands have been assessed and current studies show that of the 79 endemic species, 77% are at risk of extinction. Most of these are new assessments but one species, the infamous Coco de Mer (Lodoicea maldivica) has been uplisted from Vulnerable to Endangered. Known for its supposed aphrodisiac properties, the Coco de Mer faces threats from fires and illegal harvesting of its kernels. Western Black Rhino declared extinct Chinese Water Fir_Glyptostrobus pensilis_Philip Thomas.jpg The Chinese Water Fir (Glyptostrobus pensilis), which was formerly widespread throughout China and Viet Nam, has been upgraded from Endangered to Critically Endangered. Western Black Rhino declared extinct Begonia seychellensis_Justin Gerlach.JPG The Begonia seychellensis is one of the many tropical plant species at risk. Western Black Rhino declared extinct The Blessed Poison Frog_Ranitomeya benedicta_Jason Brown (1).jpg The Blessed Poison Frog (Ranitomeya benedicta) is currently listed as Vulnerable. Western Black Rhino declared extinct Przewalski's Horse_ Equus ferus_Patricia D Moehlman.jpg The Przewalski's Horse (Equus ferus) is another success story, improving its status from Critically Endangered to Endangered.

“He was a great ambassador for his species and will be remembered for the work he did to raise awareness globally of the plight facing not only rhinos, but also the many thousands of other species facing extinction as a result of unsustainable human activity,” said the conservancy's CEO Richard Vigne.

Sudan was something of a celebrity in his lifetime and attracted thousands of visitors to Dver Kralove and Ol Peteja.