• Title/Summary/Keyword: fighting behavior

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Courtship, Fighting Behaviors and Sexual Dimorphism of the Salamander, Hynobius leechii (한국산 도롱뇽의 구애 행동, 싸움행동 및 신체적 특징)

  • 박시룡;박대식;양서영
    • The Korean Journal of Zoology
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    • v.39 no.4
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    • pp.437-446
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    • 1996
  • The courtship and fighting behaviors and the sexual dimorphism of the salamander Hynohius leechil were studied. The parameters, snout vent length, body length (from snout to tail tip), and proportion of snout vent length to body size were larger in the female than the male. Five physical parameter in males were significantly correlated with one another, body length, snout vent length, head width, tail vent length, and tall depth, while all, except tail depth, were significantly correlated in females. Sexual behavior of H. leechIl involved external fertilization and consisted of three stages, identifying the female, aifrading the female, and insemination. The identification stage consisted of a positive advance by the male toward the female and display of snout contact. The male attracted the female with chin rubbing, tail undulation, smelling, and digging displays. The insemination process consisted of four phases, amplex, separating egg sacs from the female's cloacal, fertilizing eggs, and post fertilization. liighting behaviors were quite simple. The attacking male would generally bite the opposite male's upper chin or hind limbs and then shakes his head two or three times. The bitten male, which in most cases was of a dissimilar body size, quicidy escaped from the attacking male. After fighting, winning male usually displayed rapid tail undulation.

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A Study on the Psychopharmacological Actions of Panax ginseng in Animals (인삼의 향정신작용에 관한 연구)

  • Hong, Sa-Ack;Kim, Myeong-Seok;Jang, Hyeon-Gap
    • Journal of Ginseng Research
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    • v.1 no.1
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    • pp.33-50
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    • 1976
  • As a continuation of series of works on the pharmacological actions of Panax ginseng. three kinds of behavioral experiments were carried out using rats and mice. The occurrence of component Posterns of general behavioral activity in rat was examined by visual scanning using the ting sample method in the ad lib. And he hunger deprivated situation. In normal ad lib. situation, the eating behavior of rat treated with 100mg/kg of ginseng saponin was significantly more frequent than that of saline control at the night and throughout the 24 hr period. But grooming was less frequent than the control at the same period. In the hunger situation followed by 90~120 hrs of feed deprivation, the locomotive activity and rearing awe significantly more often and sleeping was less frequent in the two dosage g roups of ginseng saponin (10 and 100 mg/kg) than in the saline group though out the observation period. Training of avoidance conditioning in rats was done in a two-way shuttle box. The number of conditioned response (CR) in which the animal avoided sucessfully an electric shock by running in to the other compartment of the hex was regarded as an index of learning performance. Ginseng saponin in doses of 2.5 mg/kg Produced a significantly increased CR in total avoidance tria1s compared with the control. Although other dosage groups of ginseng saponin (5.0, 50mg and 100 mg/kg) showed no significant statistical difference from the normal control, it tended to increase in CR in the ginseng groups than in the control. An aggressive behavior in mice was observed in n shock-generating fighting box. The occurrence of reflexive fighting between two animals induced by an electric shock applied to the feet war checked as an index of aggression. The occurrence of reciprocal fighting episode immediately after the onset. Of the shock was significantly decreased in the dosage group of 400 mg/kg ginseng saponin, but it did net differ in the 100 mg/kg group of ginseng saponin from the control group. The dose, 400 mg/kg of ginseng saponin, inhibited fighting behavior in more than 80% of the Pairs. but 100 mg/kg of ginseng did inhibit it in less than 20% of the pairs.

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Creep Feed: Effects of Feed Flavor Supplementation on Pre- and Post-weaning Performance and Behavior of Piglet and Sow

  • Yan, L.;Jang, H.D.;Kim, I.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.24 no.6
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    • pp.851-856
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    • 2011
  • This study was conducted to evaluate the effects of flavor supplementation on pre- and post-weaning performance and behavior of piglets and sows. A total of 30 sows (Landrace${\times}$Yorkshire) and their litters were employed in this study. Sows were randomly assigned to 3 dietary treatments (10 replications per treatment). Dietary treatments included: i) CON, basal diet; ii) TRT1, CON+0.1% vanilla supplement; iii) TRT2, CON+0.1% cheese supplement. The behavior of sows (nursery, eating and standing) and piglets (eating, sleeping and fighting) in each treatment was monitored throughout experiment. Each piglet was weighted at 5, 10, 15 and 21 d after birth to evaluate the average daily gain. Sows and piglets were bled on the weaning d to evaluate the blood characteristics. Back fat and estrus interval were investigated. In this study, there were no differences (p>0.05) in diarrhea score and blood characteristics among treatments. Likewise, the behavior was not influenced (p>0.05) by the dietary flavor supplementation. However, administration of flavor increased (p<0.05) the pre-weaning feed intake, post-weaning average daily gain (ADG) and gain/feed (G/F) ratio. No significant difference was observed (p>0.05) on the blood characteristics, behavior, backfat loss and estrus interval among treatments. In conclusion, administration of flavor could increase creep feed intake pre-weaning and piglet ADG post-weaning, whereas inclusion of flavor had no influence on blood characteristics and performance in sow and piglets.

흡혈 박쥐(Desmodus rotundus)집단에 있어서의 서열관계

  • 박시룡
    • The Korean Journal of Zoology
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    • v.31 no.4
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    • pp.243-250
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    • 1988
  • 남미산 흡혈박쥐구esmodus rohndusl의 서열관계에 대해 자연상태와 유사한 조건하에서 사육상태의 집단을 연구하였다. 이들의 서열은 먹이장소에서 2마리의 성체들이 만났을때 4가지로 서로 다른 행동들(도망가기, 날아가기, 기다리기, 피하기)에 의해 결정했다. 공격행동(싸움후 도망가기)은 관찰된 전체행동들 가운데 16호로 비교적 적게 나타났다. 암컷들의 서열은 일부 먹이 서열에 의해서도 반영되었다. Harem수컷은 non-harem수컷들에 대해서 우위를 차지하였으며 열세 행동을 보여 주었다. 그러나 이 harem 수컷은 그의 성적 파트너에 대해서는 공격행동을 보이지 않았다. Dominance relationship was investigated in a captive of Desmodus rotundus, a neotopical sangivorous bat, under seminaturalistic conditions. The hierarchy was determined from four different behaviors (flee, fly-out, avoid, wait) by the encounter of ho adult bats on the feeding site. The aggressive action (flee after fighting) was relatively low (16%) compare to the other three observed behaviors. The hierarchy of the females reflected sometimes in the feeding order The harem male dominated the non-harem males and exhibited his territorial behavior. However, to his sex partners he didn't show aggressions.

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A Study on Preschool Child's Imaginative Play and Play Materials (유아의 상상놀이 (Imaginative Play)와 놀이감에 관한 연구)

  • 이숙재
    • Journal of the Korean Home Economics Association
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    • v.20 no.4
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    • pp.185-192
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    • 1982
  • The purpose of this study was to examine preschool children's participation tendency and use of play materials in imaginative play. The subjects for the study included 22 boys and girls in nursery school. These children were observed for 110-3-minutes of play behavior during free play at nursery school, especially in block area and housekeeping area. The results obtained from the study were as follows. 1. There was a significant association between paricipation tendency in imaginative play and age or sex, Boys engaged in more social imaginative play than girls, and four-year-olds engaged in more social imaginative play than three-year-olds. 2. There was sex difference in the content of imaginative play and use of play materials. That is, boys usually chose masculine kinds of toys such as block, cars, trucks, and manipulative materials. And the boys' common fantasies were about car, robert and fighting. Girls usually chose play dough, kitchen sets, and blocks and there were maines stories of family life and cooking. 3. Children preferred to use more realistic toys in imaginative plays and there were few cases of imaginative plays with no materials.

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Rearing characteristics of fattening Hanwoo steers managed in different stocking densities

  • Ha, Jae Jung;Yang, Ka Young;Oh, Dong Yep;Yi, Jun Koo;Kim, Jong Joo
    • Asian-Australasian Journal of Animal Sciences
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    • v.31 no.11
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    • pp.1714-1720
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    • 2018
  • Objective: This study was conducted to analyze the effects of stocking density on growth and carcass quality, and behavior of Hanwoo cattle to conform with global trends, targeting animal welfare production through the practice of environmentally friendly condition. Methods: Thirty six steers were randomly assigned to three treatment groups (C: 5 heads, T1: 4 heads, T2: 3 heads) and reared in separate pens with a constant stocking density of $50m^2$ (C: $10m^2/head$, T1: $12.5m^2/head$, T2: $16.67m^2/head$) per group from 12 to 30 month of age. Growth performance, behavior and carcass quality traits of each steer were recorded and compared between the treatment groups. Results: In general, the average daily gain during the fattening period was lower in group T2 than in T1 and the control groups. However, carcass weight and dressing percentage was lower in the control group than in T1 or T2 groups (p<0.05). Also, marbling score at 30 months of age was the lowest in the control group (p<0.05), while the three heads group (T2) had the greatest longissimus muscle area and marbling score (p<0.05). The behavior of walking time was the greatest in T2 group, while self-grooming and fighting occurred with the most frequency in the control group (p<0.05). Conclusion: Our results show that the steers in more spacious stocking density had better carcass quality and wellbeing related behaviors, indicating that a lower density has a positive effect on raising management and carcass quality. Thus it is a need to install appropriate pens fitted to welfare-oriented management practices from growing to fattening period in Hanwoo cattle.

Aggressive behavior of Male Rats following Hippocampal Ablation (뇌 해마를 떼어버린 흰쥐의 공격적 행동)

  • Park, Rho-Soon;Kim, Chul
    • The Korean Journal of Physiology
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    • v.1 no.2
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    • pp.169-175
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    • 1967
  • An experiment was designed to see if the hippocampus exerts any influence upon the aggressive behavior of male rats. Fighting between rats was observed for the estimation of aggressiveness. Seventeen rats in which the hippocampus was almost totally removed through a small hole with a diameter around 3 mm made in the neocortex at the boundary between the parietal and occipital lobes (hippocampal group), 8 rats with similar neocortical damage alone (operated control group), and 17 normal control rats (normal group) were prepared and subjected to the experiment 3 months after the operation. Applying electric shock of short duration to the feet in a box with grid floor, a fight was provoked between an animal belonging to the hippocampal group and one belonging to the nor-mal group, between a rat of the hippocampal group and one of the operated control group, and also between a rat of the operated control group and one of the normal group. Three observers judged the performance of each animal independently and described it as winning, defeated, tied, or non-fighting. Fifteen shocked trials were administered to each pair of animals with around 2 minutes' interval between each trial. An animal received a 'judging score' of 3 when it won more frequently than was defeated, a judging score of 2 when it won as frequently as was defeated, when all fights were tied, or when no fighting occurred, while it received a judging score of 1 when it won less frequently than was defeated. Group differences in performances were analyzed in terms of judging score using Kolmogorov-Smirnov test for one sample. The results obtained were as follows: 1. In the fights between the hippocampal and the normal groups, the hippocampal animals made significantly better judging scores than the normal animals did (Table 1). 2. There was no significant difference between the hippocampal and the operated control group as to the judging scores they made in the course of fights between the two groups. However, the hippocampal animals tended to dominate over the operated control group as judged by comparing the total 'winning' of the former (30) to that of the latter (14) (Table 2). 3. The total judging score made by the operated control group in the course of the fights against the normal group was not significantly superior to that made by the normal group (Table 3). It was inferred from the above results that, though inconspicuous, the hippocampus tended to exert an inhibitory influence upon the aggressive behavior of male rats.

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Direction of Fire Safety Development through Analysis of Previous Firefighting-Related Research (소방분야 선행연구 분석을 통한 소방안전 발전방향)

  • Jeong, Mu Heon;Lee, Sun Jai;Park, In-Seon
    • Fire Science and Engineering
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    • v.33 no.5
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    • pp.103-108
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    • 2019
  • The purpose of this study is to suggest the development direction of fire safety through the analysis of previous researches in the field of fire fighting. To this end, 929 papers published in the Journal of Korean Institute of Fire Science and Engineering have been sorted by field of study and analyzed for frequency. Accordingly, it was confirmed that researches were conducted in the order of fire chemistry and physics, detection and extinguishing system, fire safety design and management, evacuation and human behavior. In contrast, very little research has been conducted on human behavior, fire safety education, or training. This result is discussed in the article, and suggestions for future research objectives are made.

Virtual-Constructive Simulation Interoperation for Aircombat Battle Experiment (Virtual-Constructive 시뮬레이션 연동을 활용한 공중전 전투 실험)

  • Kim, Dongjun;Shin, Yongjin;An, Kyeong-Soo;Kim, Young-Gon;Moon, Il-Chul;Bae, Jang Won
    • Journal of the Korea Society for Simulation
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    • v.30 no.1
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    • pp.139-152
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    • 2021
  • Simulations enable virtually experiencing rare events as well as analytically analyzing such events. Defense modeling and simulation research and develops the virtual and the constructive simulations to support these utilizations. These virtual and constructive(VC) simulations can interoperate to simultaneously virtual combat experience as well as evaluations on tactics and intelligence of combat entities. Moreover, recently, for artificial intelligence researches, it is necessary to retrieve human behavior data to proceed the imitation learning and the inverse reinforcement learning. The presented work illustrates a case study of VC interoperations in the aircombat scenario, and the work analyze the collected human behavior data from the VC interoperations. Through this case study, we discuss how to build the VC simulation in the aircombat area and how to utilize the collected human behavior data.

Model for the Structural Relationships of Behavioral Attitude, Subjective Norm and Perceived Behavioral Control to Safety Intention and Safety Behavior in 119 Emergency Medical Technicians (119구급대원의 행위태도, 주관적 규범 및 지각된 행위 통제가 안전의도, 안전행동에 미치는 영향에 관한 구조적 관계 모형)

  • Moon, Tae-Young;Choi, Mi-Young
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.9
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    • pp.215-224
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    • 2018
  • The purpose of the this study was to verify a model for the structural relationships of the behavioral attitude, subjective norm and perceived behavioral control of 119 emergency medical technicians to their safety attitude and safety behavior. A survey was conducted on 373 male and female 119 emergency medical technicians who were working as fire-fighting officers in Seoul, Inheon, Gangwon Province, Daegu, South Chungcheong Province, North Gyeongsang Province and Busan. The collected data were statistically analyzed by SPSS 20.0 and AMOS 16.0. The findings of the study were as follows: First, the behavioral attitude of the 119 emergency medical technicians was found to have affected and safety behavior(t=.32, p<.001). Second, the subjective norm of the 119 emergency medical technicians was found to have exerted an influence on their safety attitude and safety behavior(t=.27, p<.001). Third the perceived behavioral control of the 119 emergency medical technicians was found to have influenced their safety attitude and safety behavior(t=.28, p<.001). Fourth, the safety attitude of the 119 emergency medical technicians was found to have had an impact on their safety behavior(t=.39, p<.001).