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Showing 1 to 13 of 13 for “"defensive behavior"”.
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Individual capture history affects site use and defensive behavior of foraging eastern copperheads at a recreational site
… suggests individuals allocate energy toward defensive behaviors equivalent to risk of predation. In this framework, repeat encounters with humans that do not reduce individual fitness could result in a decreased defensive response toward humans in subsequent encounters. I investigated the …
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Hostplant-Related Causes of Unequal Parasitoid Exploitation of Two Leafminers, Tildenia Georgei and Tildenia Inconspicuella (Lepidoptera: Gelechiidae), on Solanaceous Weeds (Defensive Behavior, Life History, Plant Trichomes, Species Richness, Enemy-Free Space)
Two leafminers (Tildenia georgei on groundcherry, Physalis heterophylla var. ambigua, and Tildenia inconspicuella on horsenettle, Solanum carolinense), sampled in a large old field in Mason Co., Illinois, U.S.A., June-August, 1977-1980, differed markedly in vulnerability to parasitoids. Only two …
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HIDE AND SEEK: AN EXPLORATION OF ANTIPREDATOR AND PREDATOR AVOIDANCE MECHANISMS IN ORTHOPODOMYIA SIGNIFERA IN RESPONSE TO PREDATION FROM TOXORHYNCHITES RUTILUS
… The first hypothesis states that larvae adapt behavioral changes that limit predation. The second hypothesis states thoracic setae serve as a physical defense that prevents <em>Tx. rutilus</em> from grasping <em>Or. signifera</em>. The third hypothesis states <em>Or. signifera </em>possess a …
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Stress Ecology of the Pacific Rattlesnakes (Crotalus oreganus and Crotalus helleri)
… periods thereafter, we sampled blood, venom, defensive behavior, and body temperature (T<sub>b</sub>). Thermal data logger implants recorded snake T<sub>b</sub> each hour. Snakes were tracked daily for one month, and detectability, defensive behavior, movement, home range size and thermal …
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Phenotypic Consequences of Gestation Temperature in the Northern Watersnake, Nerodia Sipedon
… morphology, locomotor speed, anti-predator behavior, and growth are known to be affected by developmental temperature and are likely to have important fitness consequences. I explored the influence of gestation temperature on offspring phenotypes produced by gravid Northern Watersnakes …
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Design and testing of a roadside traffic threat alerting mechanism
… mechanism designed specifically to induce defensive behavior on the part of the at-risk officers (or other roadside personnel), once a hazardous situation has been detected. The immediate objective of this research was to produce an effective alarm prototype for a high noise, low-light …
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Identificação dos núcleos pré-familiares em Mocó (Kerodon rupestris): citoarquitetura e imunoistoquímica para NOS
… is very important to the circuit that control defensive and agonistic behavior. In rodents, as rat and mouse, the PMV is a dropshaped compact group of neurons in a rostral level, but is rounded in a caudal level. The PMD is caudal and dorsal to the PMV and has a rectangular shape in a rostral …
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The Rating of Sexual and Nonsexual Cartoons as a Function of Repression-Sensitization
… R-S scale to an approach- avoidance continuum of defensive behavior. The few studies that have used sexual stimuli to produce a threat response have not obtained very consistent results. The present study has focused on the relationship between the R-S scale and the humor rating of cartoons. …
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Phenotypic consequences of adaptive toxin production and resistance in coevolutionary partners
… by measuring speed, endurance, and antipredator behavior in three Thamnophis species with an array of Nav genotypes and corresponding resistance phenotypes. We predicted that resistant snakes with weaker underlying skeletal muscles would be slower, with lower endurance, and they would rely on …
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Neuronal and Molecular Basis of Nociception and Thermosensation in Drosophila melanogaster
… living organisms. Most animals have nocifensive behaviors towards extreme temperatures, mechanical stimuli or irritant chemicals that are considered to be noxious. Nociception is defined as the neural encoding and processing of noxious stimuli. This process starts from the activation of pain …
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Variation in Defensive Behaviors of the Western Cottonmouth (Agkistrodon Piscivorus) as a Result of Temperature, Size, and Reproductive Condition
Defensive responses during predatory encounters may vary according to the cost and benefits associated with different predatory contexts. In snakes, defensive behaviors may be influenced by temperature, sex, body size, and reproductive state. In response to human antagonists, the cottonmouth …
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Understanding White-Tailed Deer Productivity: Population Ecology of Neonates
… characteristics in the region. We evaluated behavior, bed site selection, movement, home range use, survival, cause-specific mortality, and resource selection of white-tailed deer fawns from 2007–2009 in north-central South Dakota. Maternal investment plays a critical role in neonate …
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Mapping the neural circuits that underlie metabolic vs. emotional regulation of food-seeking behavior
<p>Flexibly adjusting food-seeking behaviors based on metabolic needs and environmental threats is crucial for animal survival. In humans, maladaptive food-seeking behaviors that contravene energy homeostasis, which is often driven by food-associated cues with hedonic reward values, lead to obesity …