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Biology

   

Pest Significance

             
Excellent senses of touch, taste, smell and hearing.  Poor vision.  Agile, and active climber.  Omnivorous, with a preference for fruit, nuts, grains and vegetables.  Usually eats 25 - 28g  per day.  Historically  associated with shipping, this species is decreasingly prominent in the UK.  
            
 

Rattus rattus

The Black or Ship Rat - Rattus rattus

The Black or Ship Rat

 
             
  Greatly decreased in western Europe in modern times.  This is most likely due to competition from increasing populations of R. norvegicus which has been increasing it's distribution over the same period.
         
   
   
   
   
   
   
   
   
   
   

Habitat

 
BODY LENGTH: 14.4 - 20 CM
TAIL LENGTH: 25 CM
WEIGHT: 225g (100 - 300)
COLOUR: VARIABLE
SEXUALLY MATURE: 12 - 16 WEEKS
GESTATION PERIOD: 21 - 22 DAYS
AV. LITTER SIZE: 6 - 10
LITTERS / YEAR: 3 - 5
WEANING PERIOD 3 - 4 WEEKS
 

Control

              
Restricted in modern times in the UK to only a few areas.  When found in buildings, the Black rat is most often sighted on roofs.   Pipes, cables and beams offer means of distribution to this agile mammal which can jump over a meter in height from standing start.  
          
   
        
  When necessary, means of control are similar to those for R. norvegicus
           
   
   
   
   
   
   
   
   
   

               

                                

 


   

 

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