diff --git a/UML/classes.puml b/UML/classes.puml
index e48eb5d..59124fb 100644
--- a/UML/classes.puml
+++ b/UML/classes.puml
@@ -27,7 +27,7 @@ namespace ecoparasite {
         InputFactory o--> RawData
 
         interface DataParsing {
-            + HashSet<Poisson> parse()
+            + HashSet<T> parse()
         }
 
         exception InputFileException {
@@ -41,6 +41,11 @@ namespace ecoparasite {
             + String getMessage()
         }
 
+        exception InvalidParsingException {
+            - int parsingId
+            - String parsingClass
+        }
+
     }
 
     namespace ecoparasite.poissons {
@@ -64,12 +69,54 @@ namespace ecoparasite {
             + Mackerel()
         }
 
-        abstract class PartiePoisson {
+        class PartiePoisson {
+            - String name
+            - Double infestation
+            + PartiePoisson(String name, Double infestation)
         }
 
         Poisson o--> PartiePoisson : # fishParts
     }
 
+    namespace ecoparasite.population {
+
+        class Population implements ecoparasite.input.DataParsing {
+            - String id
+            - HashMap<Integer,PopulationArgs> perYear
+            + Population()
+        }
+
+        Population o--> PopulationArgs : - total
+
+        class PopulationArgs {
+            - int year
+            - int number
+            - Double intensity
+            - Double abondance
+            + PopulationArgs()
+        }
+
+        PopulationArgs o--> PopulationArgInterval : - length
+        PopulationArgs o--> PopulationArgInterval : - width
+        PopulationArgs o--> PopulationArgInterval : - prevalence
+        PopulationArgs o--> PopulationArgInterval : - ic
+
+        class PopulationArgInterval {
+            - Double min
+            - Double max
+            - Double mean
+            + PopulationArgInterval()
+            + PopulationArgInterval()
+            + Double transformToDouble()
+            + {static} PopulationArgInterval fromString()
+        }
+
+        class PopulationParsing {
+            + {static} HashSet<Population> parseParasitesPeru()
+            - {static} void applyValueForParasitesPeru()
+        }
+    }
+
     namespace ecoparasite.unknown {
 
         note top of ecoparasite.unknown : Ce paquet est temporaire pour des classes / interfaces qui devront avoir plus de déclinaisons.