Brazil's tourism ambassador has threatened to choke Emmanuel Macron and called his wife Brigitte “ugly” amid a continuing war of words between the French president and the Brazilian government over the fires in the Amazon rainforest.

In a video posted on social media, Renzo Gracie accused Mr Macron, who has criticised Brazil’s response to the devastating blazes, of “talking rubbish” about his country.

“The only fire going on is the fire inside Brazilian hearts and our president’s heart, you clown. Come over here you’ll be caught by the neck, that chicken neck. You don’t fool me,” said Mr Gracie, a 52-year-old mixed martial arts fighter appointed to public office last month by Jair Bolsonaro, Brazil's far-right president.

In a subsequent interview with Brazilian news outlet UOL, Mr Gracie complained tourism appeared to be declining in the country due to the “false fires”, claiming without evidence that the burning of the rainforest was at normal levels.

“That gang of clowns only open their mouths to speak badly about our country,” Mr Gracie said, referring to Mr Macron. “"Of course many will be astonished, they will think I called him a female chicken because his manhood is questionable, but no. I've met many gays more manly than this imbecile.”

Amazon rainforest swept by fires: In pictures Show all 25 1 /25 Amazon rainforest swept by fires: In pictures Amazon rainforest swept by fires: In pictures Fire rages in the Amazon rainforest in the Brazilian state of Rondonina on August 23 Reuters Amazon rainforest swept by fires: In pictures Smoke billlows from burning tracts of the Amazon rainforest in the Brazilian state of Para on August 23 AFP/Getty Amazon rainforest swept by fires: In pictures Fire rages in the Amazon rainforest in the Brazilian state of Rondonina on August 23 EPA Amazon rainforest swept by fires: In pictures Land in the Amazon rainforest left scorched in the fires in the Brazilian state of Rondonina on August 23 AFP/Getty Amazon rainforest swept by fires: In pictures Smoke billows during a fire in an area of the Amazon rainforest in the state of Rondonia, Brazil on August 23 AFP Amazon rainforest swept by fires: In pictures Fire tears through a farm in the Brazilian state of Mato Grosso AP Amazon rainforest swept by fires: In pictures An area of the Amazon rainforest left scorched in the fires in the Brazilian state of Amazonas on August 24 AFP/Getty Amazon rainforest swept by fires: In pictures Satellite images show a series of fires in the southwest Brazilian state of Rondonia on August 15 AP Amazon rainforest swept by fires: In pictures Smoke billows during a fire in an area of the Amazon rainforest in the state of Rondonia, Brazil Reuters Amazon rainforest swept by fires: In pictures A satellite image released by NASA shows the active fires that have been detected in the Amazon region EPA Amazon rainforest swept by fires: In pictures Smoke billows during a fire in an area of the Amazon rainforest in the state of Amazonas, Brazil Reuters Amazon rainforest swept by fires: In pictures Smoke billows during a fire in an area of the Amazon rainforest in the state of Rondonia, Brazil Reuters Amazon rainforest swept by fires: In pictures Smoke billows during a fire in an area of the Amazon rainforest in the state of Rondonia, Brazil Reuters Amazon rainforest swept by fires: In pictures Smoke billows during a fire in an area of the Amazon rainforest in the state of Amazonas, Brazil Reuters Amazon rainforest swept by fires: In pictures Indigenous people from the Mura tribe wallk in a deforested area inside the Amazon rainforest in the Brazilian state of Amazonas on August 20 Reuters Amazon rainforest swept by fires: In pictures Fire tears through a farm in the Brazilian state of Mato Grosso AP Amazon rainforest swept by fires: In pictures Smoke billows from a stretch of fire in the Amazon rainforest in the Brazilian state of Rondonia on 23 August AFP/Getty Amazon rainforest swept by fires: In pictures Smoke billows during a fire in an area of the Amazon rainforest in the state of Amazonas, Brazil Reuters Amazon rainforest swept by fires: In pictures Indigenous people from the Mura tribe wallk in a deforested area inside the Amazon rainforest in the Brazilian state of Amazonas on August 20 Reuters Amazon rainforest swept by fires: In pictures Smoke billows from a stretch of fire in the Amazon rainforest in the Brazilian state of Rondonia on 23 August AFP/Getty Amazon rainforest swept by fires: In pictures A view of logs felled illegally in the Amazon rainforest are seen in sawmills in the Brazilian state of Amazonas on August 22 Reuters Amazon rainforest swept by fires: In pictures A scorched patch of land in the state of Mato Grosso in Brazil on 20 August EPA Amazon rainforest swept by fires: In pictures Several fires are seen burning in the Amazon rainforest in this satellite image taken by NASA on 11 August AFP/Getty Amazon rainforest swept by fires: In pictures Smoke billows from a stretch of fire in the Amazon rainforest in the Brazilian state of Rondonia on 23 August AFP/Getty Amazon rainforest swept by fires: In pictures The sunsets behind clouds and smoke from fires in the Amazon rainforest in the Brazilian state of Rondonia on 18 August EPA

Mr Gracie’s homophobic outburst came a week after Mr Macron condemned Mr Bolsonaro for “extraordinarily disrespectful comments” about his wife.

In a post on Mr Bolsonaro's Facebook page, a user insulted the 66-year-old French first lady by comparing her appearance with that of Mr Bolsonaro’s wife, Michelle, implying the younger woman was more attractive.

The supporter suggested Mr Macron was jealous, and that that was why he was “persecuting” the Brazilian leader. Mr Bolsonaro hit “like” on the post, writing: "Don't humiliate the guy ... ha ha."

Asked about alleged derogatory comments he himself had made about Brigitte, Mr Gracie called Mr Macron's wife a “dragon”.

"I'll ask you a question, is his wife pretty or ugly? Would you do her? If you criticise our country, get ready to listen to a load of bulls***, and also about your relatives. The fact that he is sleeping with the dragon does not make him a fire expert. She’s ugly, my brother,” he said.

Despite belated efforts to stop deforestation – the major source of Brazil’s fires – there were more than 2,000 fire outbreaks in the Amazon in the 48 hours after the government on Thursday imposed a burning ban, according to the country’s National Space Research Institute.

The escalating environmental crisis led G7 countries last month to pledge $20m (£16.3) in aid, an offer which Mr Bolsonaro initially rejected but later said he would consider if Mr Macon “withdraws his insults”.

Those perceived insults came at a G7 summit in France, during which the French president sought to build international consensus for action in the Amazon, amid fears Mr Bolsonaro’s policies prioritise economic growth even if it comes at the expense of the rainforest.