In Arabidopsis, a calmodulin-binding transcriptional

regulator called IQD1 mediates of defense responses against insect herbivory. IQD1 binds calmodulin, a major Ca2+-binding protein

TLS Online TPP Program

#Id: 5506

#XL - T Zoology

If individuals in one patch go extinct, other individuals in other patches survive, and they supply individuals

TLS Online TPP Program

#Id: 5507

#XL - T Zoology

The proportion of occupied patches will stabilize over time to 1− (x/m) x is the extinction rate of populations in patches per unit time m is the rate of movement between patches

TLS Online TPP Program

#Id: 5508

#XL - T Zoology

                                                                                                                                               

TLS Online TPP Program

#Id: 5509

#XL - T Zoology

Different kinds of metapopulations

TLS Online TPP Program

#Id: 5510

#XL - T Zoology

TLS Online TPP Program

#Id: 5511

#XL - T Zoology

Populations of some species are prone to extinction for two reasons

1. The landscapes they live in are patchy (making dispersal between populations difficult).

2. Environmental conditions often change in a rapid and unpredictable manner.