The amino acids for which the Class I synthetases are specific tend to be larger and more hydrophobic than those for Class II synthetases.

TLS Online TPP Program

#Id: 9140

#Unit 10. Ecological Principles

Brood parasitism is a specific kind of kleptoparasitism in which individuals manipulate others to feed and look after their young.

TLS Online TPP Program

#Id: 9141

#Unit 10. Ecological Principles

Mafia hypothesis – In Brood parasitism

Cuckoos or cowbirds check their host’s nests and destroy all eggs if their owner is not present. If the parasite egg has been removed, they destroy the host’s nest and kill or injure the nestlings.

TLS Online TPP Program

#Id: 9142

#Unit 10. Ecological Principles

Five necessary attributes

General adaptability to the environment. 

High searching capacity for hosts. 

High rate of increase relative to the hosts. 

Good dispersal ability. 

Minimal time lag effects in responding to changes in host numbers.

TLS Online TPP Program

#Id: 9143

#Unit 10. Ecological Principles

Host-Parasite Models

TLS Online TPP Program

#Id: 9144

#Unit 10. Ecological Principles

Rp > 1 disease is to spread

Rp = 1 disease is constant

Rp < 1, disease dies out

TLS Online TPP Program

#Id: 9145

#Unit 10. Ecological Principles

Critical threshold density (NT) where Rp = 1