As part of the university's Graduate Research Month, 21 postgraduate students took part in what was believed to be only the world's third university Twitter conference devoted to thesis-based research.
Twenty-five students took part last year in what Otago University officials said was the world's first official university Twitter conference of this kind.
The University of Canterbury held a second event in May.
Participants are asked to summarise their thesis in only six tweets, sent via smartphone or computer.
Running a computer-linked "virtual" conference meant a researcher in India, and another aboard a boat in Doubtful Sound could take part.
Otago graduate research services manager Claire Gallop has jokingly noted this is "the only conference you can attend in your pyjamas".
Otago zoology PhD student Grant Humphries initially opted for the pyjamas and later baked two loaves of bread at his Ravensbourne home while taking part in the conference.
This was while he prepared to send off his own tweeting summary of his research about the way records of the body weight of Titi or muttonbird chicks could be used to predict climate shifts.
Participating in the conference had been "eye-opening", he said.
Ms Gallop said new connections formed by students talking to each other about their research could give them a "massive boost".
Graduate Research Month aims to provide support for, and to celebrate postgraduate students.
