Yes, spells remain for their duration unless otherwise stated they are dispelled, cancelled or surpressed.
This is inferred by the Main FAQ that even casting a spell that depends on type would remain when polymorphed. I recall a similar FAQ question for Enlarge Person but stopped digging when I found this.
If, while under the effect of a spell that depends on type (such as hold person), my character is transformed into a different creature type by polymorph, does the spell’s effect remain?
Yes. A spell only checks to see if you are a legal target when it is cast. If you become an illegal target later (such as via the polymorph spell), the spell remains in effect.
*The question and answer uses “polymorph” to refer specifically to spells that rely on the polymorph or alter self spell to adjudicate their effect (including alter self, polymorph, polymorph any object, and shapechange), psionic powers based on the metamorphosis power (including metamorphosis and greater metamorphosis), and any other effect based on either of these lists.