Phospholipase that plays a critical role during oogenesis, ovulation, and/or embryogenesis. a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1-acyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) Mutant animals generate fewer progeny and slower larval development. Belongs to the patatin family.