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The defensive behavioral patterns of captive white-lipped and collared peccary (Mammalia, Tayassuidae): an approach for conservation of the species
(Springer, 2017-06-01)
Defensive behavioral patterns in response to human-induced rapid environmental change can affect animals' fitness and may play a role in species conservation status. To test this hypothesis, we compared the risk assessment ...
Effects of intra-PAG infusion of ovine CRF on defensive behaviors in Swiss-Webster mice
(Elsevier B.V., 2007-01-25)
The midbrain dorsal periaqueductal gray (DPAG) is part of the brain defensive system involved in active defense reactions to threatening stimuli. Corticotrophin releasing factor (CRF) is a peptidergic neurotransmitter that ...
Effects of intra-PAG infusion of ovine CRF on defensive behaviors in Swiss-Webster mice
(Elsevier B.V., 2007-01-25)
The midbrain dorsal periaqueductal gray (DPAG) is part of the brain defensive system involved in active defense reactions to threatening stimuli. Corticotrophin releasing factor (CRF) is a peptidergic neurotransmitter that ...
Defensive behavior of africanized honeybees (Hymenoptera: Apidae) in Dourados-Mato Grosso do Sul, Brazil
(Soc Colombiana Entomologia-socolen, 2014-07-01)
African bees were introduced in Brazil in 1956, in an attempt to improve honey production. The accidental hybridization between African and European breeds originated africanized bees, which are very well adapted to the ...
An Inescapable Cat Odor Exposure Protocol for Studying Innate and Contextual Threat Conditioning in Rats
(2021)
Animals respond to threatening situations by exhibiting a number of defensive behaviors, including avoidance, freezing, and risk assessment. An animal model with an ethological approach offers a deeper insight into the ...
Interpopulation Comparisons of Antipredator Defense Behavior of the Thorn-Tailed Rayadito (Aphrastura spinicauda)
(Wiley, 2013-12)
The high impact of predators on breeding success has favored the evolution of diverse behavioral strategies that enhance both individual survivorship and reproductive success. Self- and nest-defense against predators are ...
The periaqueductal gray and its potential role in maternal behavior inhibition in response to predatory threats
(ELSEVIER SCIENCE BV, 2010)
Animals faced with conflicting cues, such as predatory threat and a given rewarding stimulus, must make rapid decisions to engage in defensive versus other appetitive behaviors. The brain mechanisms mediating such responses ...
Blockade of NMDA or NO in the dorsal premammillary nucleus attenuates defensive behaviors
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
The dorsal premammillary nucleus (PMd) is a hypothalamic structure that plays a pivotal role in the processing of predatory threats. Lesions of this nucleus virtually eliminate the expression of defensive responses to ...
Worker Defensive Behavior Associated with Toxins in the Neotropical Termite Neocapritermes braziliensis (Blattaria, Isoptera, Termitidae, Termitinae)
(2019-01-01)
Termite societies are abundant in the tropics, and are therefore exposed to multiple enemies and predators, especially during foraging activity. Soldiers constitute a specialized defensive caste, although workers also ...
Male behavior of Mischocyttarus cerberus (Hymenoptera, Vespidae) during attacks on the nest by ants
(2006-09-26)
The objectives of the present study were to verify if the males of the wasp Mischocyttarus cerberus participate in defense of the nest as they react to attack by ants, and to observe if they use chemical defense. First, ...