There is shared responsibility of parental care and territorial defense.

When resources are at low density, the gains from excluding others may not be sufficient to pay for the cost of territorial defense.

There is also little evidence that other species cooperate in complex pursuits such as trade and territorial defense.

Mariano thought the natives needed to be trained in territorial defense.

Horizon 2, the transition stage to territorial defense, is set to take effect by 2012.

Advertising the presence of a strong bond is advantageous in territorial defense.

It was to supply logistics support to the units on its territory and to provide territorial defense.

"Both are convicted criminals who did their time and volunteered for the territorial defense."

In 2001 the District passed the operational unit focused on territorial defense.

He then worked with the aerial territorial defense, of which he took command in May 1961.