translate English to French: Direct observations of the secondary water tubes of marsupial gills constructed during periods of larval incubation confirmed their role as temporary lumina for water transport during gravid periods.
L'observation directe des tubes aquifères secondaires des branchies marsupiales formés au cours des périodes d'incubation larvaire confirme leur rôle de citernes temporaires servant au transport de l'eau au cours des périodes d'incubation.