Population Interaction

Interspecific interactions arise from the interaction of populations of two different species. They could be beneficial, detrimental, or neutral (neither harm nor benefit) to one of the species or both. 

Population Interactions :

⮚Mutualism: Both species benefit.

⮚Competition:  In their interactions with each other, both species lose.

⮚Both Parasitism &  Predation: Only one species benefits.

⮚Commensalism: The interaction where one species benefits and the other is neither benefited nor harmed.

⮚Amensalism : One species is harmed, whereas the other is unaffected.

Note : Predation, parasitism, and commensalism share a common characteristic– the interacting species live closely together.

Table: Population Interactions

Species A	Species B	Name of Interaction
+	+	Mutualism
-	-	Competition
+	-	Predation
+	-	Parasitism
+	0	Commensalism
-	0	Amensalism

Assigning a ‘+’ sign for beneficial interaction, ‘-’ sign for detrimental, and 0 for neutral interaction.