I am currently teaching my students the A:3 exam piece, L'autunno by Vivaldi (i think that it how you spell it

). There is no direction or footnotes suggesting it should be played staccato, only that the original was composed for strings. I assumed therefore, that it should be played normally, not too legato or staccato. However, one of my students purchased the cd that comes with the exam book aswell, and if you listen to the recording of it, the notes are fairly staccato, as is if you listen to any version on youtube. How should i teach this? Staccato (as played on the cd) or regularly (as suggested by no mentions of staccato playing on the music)?
Help would be appreciated
Emily