Consulta: subjectFacets:"Defense behavior"
Registros recuperados: 4
Data/hora: 09/06/2024 10:40:02

ALARM PHEROMONES AND THE INFLUENCE OF PUPAL ODOR ON THE AGGRESSIVENESS OF Polybia paulista (IHERING) (HYMENOPTERA: VESPIDAE)
Provedor de dados: 79
Autores: MANZOLI-PALMA,M.F.; GOBBI,N.; PALMA,M.S.
Field bioassays were used to demonstrate that aggressive behavior of Polybia paulista (Ihering) workers is elicited by alarm pheromones present in the venom reservoirs of nest defenders and that the brood care pheromone (pupal odor) produced by the young inside the nest also plays an important defensive role. Pupal odor was extracted from the surface of pupa bodies with methanol. When bioassayed alone, the pupal odor elicited only attractiveness of workers towards the odor source, but no stinging attacks were observed. However, in the presence of alarm pheromones, the brood care pheromone potentiated the effect caused by the pupal odors, increasing the number of stinging attacks during an action of colony defense. Thus, the presence of pupae within the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Wasps; Brood; Defense behavior; Venom reservoirs.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301998000100006

A possible territorial or recognition behavior of Leptoglossus zonatus (Dallas) (Heteroptera, Coreidae)
Provedor de dados: 92
Autores: Panizzi,Antônio R.
The coreid Leptoglossus zonatus (Dallas, 1852) is commonly found in corn (Zea mays L.) fields in Brazil, and it has been observed flying and landing on objects or persons near these fields. During January, 1995, this behavior was studied in corn plantations. Results indicated that the bugs concentrated on objects (plastic cylinders traps) introduced into their habitat and that their number increased during the first 24 hs. However, as time passed (8 days), this possible territorial or recognition behavior gradually decreased, and tended to disappear.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coreidae; Defense behavior; Flight; Zea mays.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262004000400022

Predation of an American fruit-eating bat (Artibeus sp.) by an Amazon tree boa (Corallus hortulanus) in the northern Brazilian Amazon
Provedor de dados: 36
Autores: CARVALHO,William Douglas de; SILVESTRE,Saulo Meneses; MUSTIN,Karen; HILÁRIO,Renato Richard; TOLEDO,José Júlio de.
ABSTRACT We report an observation of predation by an Amazon tree boa, Corallus hortulanus, on an American fruit-eating bat, Artibeus sp., in an area of seasonal forest close to a small stream in the northern Brazilian Amazon. While bats appear to be one of the main food items of C. hortulanus, our observation is only the fourth such event to be recorded in the Brazilian Amazon. The Artibeus sp. individual was observed making distress (agony) calls continuously over a period of three hours, much longer than recorded on previous observations. Records of this type are important to further our knowledge on bat predators, and the defensive behavior of bats.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Amazonian savanna; Defense behavior; PPBio; Lavrados of Roraima.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000100024

Defense reaction induced by a metabotropic glutamate receptor agonist microinjected into the dorsal periaqueductal gray of rats
Provedor de dados: 56
Autores: Molchanov,M.L.; Guimarães,F.S.
The behavioral effects of trans-(±)-1-amino-1,3-cyclopentanedicarboxylic acid (t-ACPD), a metabotropic glutamate receptor (mGluR) agonist, or 0.9% (w/v) saline, injected into the dorsal periaqueductal gray (DPAG), was investigated. Male Wistar rats showed defense reactions characterized by jumps toward the top edges of the cages (saline = 0 vs t-ACPD = 6.0, medians P&amp;lt;0.05) and gallops (saline = 0 vs t-ACPD = 10.0, medians P&amp;lt;0.05) during the 60-s period after the beginning of the injection. In another experiment animals were placed inside an open arena for 5 min immediately after injection. Their behavior was recorded by a video camera and a computer program analyzed the videotapes. Eleven of fifteen rats injected with t-ACPD showed a...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Periaqueductal gray; Metabotropic glutamate receptors; Defense behavior; T-ACPD; Open-field; Rats.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999001200013