title: Reply to "Comment on 'Locomotion of a microorganism in weakly viscoelastic liquids' ".
abstract: In the present reply we show that the comments casting doubts on the results of our recent paper [M. De Corato et al., Phys. Rev. E 92, 053008 (2015)PLEEE81539-375510.1103/PhysRevE.92.053008] are based on a misinterpretation of the second-order fluid constitutive equation. Nevertheless, we show that, by considering alternative constitutive equations for the viscoelastic stress, we recover, to first-order in the Deborah number, the same results already obtained by De Corato et al. [Phys. Rev. E 92, 053008 (2015)PLEEE81539-375510.1103/PhysRevE.92.053008], thus dissipating any possible doubt about their validity.
authors.affiliation: Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom.
authors.forename: M
authors.initials: M
authors.lastname: De Corato
authors.affiliation: Istituto di Ricerche sulla Combustione, IRC-CNR, P.le Tecchio 80, 80125 Naples, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Greco
authors.affiliation: Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, Universit  di Napoli Federico II P.le Tecchio 80, 80125 Naples, Italy.
authors.forename: P L
authors.initials: PL
authors.lastname: Maffettone