• 제목/요약/키워드: Parasitism rate

검색결과 33건 처리시간 0.02초

Species Composition and Seasonal Distribution of the Endoparasitoids on Acronicta rumicis (Lepidoptera, Noctuidae)

  • Cho, Young-Ho;Kwon, Oh-Seok;Nam, Sang-Ho
    • Journal of Ecology and Environment
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    • 제29권1호
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    • pp.55-60
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    • 2006
  • Forty six individuals out of 200 Acronicta rumicis larva were parasitized (23 %) in 2000, 14 individuals out of 60 (23.33 %) in 2001, and 14 individuals out of 62 (22.58 %) in 2002. The mean parasitism rate was $22.97{\pm}0.38%$. The parasitism rate was 36.36 % in May and 52.78 % in October, 2000, 75 % and 50% in May and October 2001, 71.4% and 47.37% in May and October 2002 and it was much higher than other months. Parasitism was occurred from May to October 2000, but it was not in June and August 2001 and June 2002. There was no difference in the monthly mean parasitism rate, but the rate was the highest in May and October. The parasitoid of the larva of A. rumicis was the highest by 77.02% of parasitic wasps, and 13.51% of parasitic flies. It was found that multiparasitism was 4.05 % and hyperparasitism was 5.41 %. In case of parasitic wasps whose parasitism rate is the highest, the rate of Braconidae and Ichneumonidae was 70.18 % and 29.82 % respectively. That is, the former has much higher parasitism rate. The parasitism rate of the larva of A. rumicis was found that Microplitis sp. is $5.28{\pm}0.63%$, Glyptapanteles liparidis $8.62{\pm}3.70%$, and Diadegma sp. $4.02{\pm}1.28%$ respectively.

중국에서 알기생봉 Anastatus orientalis (Hymenoptera: Eupelmidae)의 꽃매미 Lycorma delicatula (Hemiptera: Fulgoridae) 알에 대한 기생율 (Parasitism Rate of Egg Parasitoid Anastatus orientalis (Hymenoptera: Eupelmidae) on Lycorma delicatula (Hemiptera: Fulgoridae) in China)

  • 최만영;;;;;김정환;변영웅
    • 한국응용곤충학회지
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    • 제53권2호
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    • pp.135-139
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    • 2014
  • 꽃매미(Lycorma delicatula)의 천적인 벼룩좀벌 일종(Anastatus orientalis Yang et Gibson(Hymenoptera : Eupelmidae))의 자연 상태에서 기생율을 조사한 결과: (1) 산동성 Yantai 에서 가장 높은 69.0%의 꽃매미 난괴가 기생 당하였고; (2) 최고 기생율은 33.0%로 북경시 하이디엔(Haidian) 지역에서 관찰되었고; (3) 기생봉의 알은 산시성의 양링(Yangling)에서 가장 빨리 부화하였으며, 천진시의 옌타이(Yantai)와 광앙(Guangang) 지역, 하북성의 친황다오(Qinhuangdao), 하이디엔(Haidian)에서 약간의 차이를 보였으며; (4) 성비는 채집된 지역에 따라 1.3에서 1.9로 다양하였고; (5) 꽃매미 난괴에 대한 기생율은 기주식물인 Populus sp., Salix sp. Toona sinensis에서 유의할 만한 차이가 관찰되지 않았으며, 최고기생율은 T. sinensis에서 64.3%로 나타났고, Ailanthus altissima에서는 27.4%로 가장 낮았다. (6) 꽃매미 알에 대해서도 꽃매미 알이 발견된 기주식물별로 차이가 없었고, 평균 30.0%의 기생율을 나타냈다.

국내 애멸구 (Laodelphax striatellus Fallen) (노린재목: 멸구과)의 시기별 날개형 및 기생율 (Wing Morphs and Parasitism Rates of the Small Brown Planthopper, Laodelphax striatellus (Hemiptera: Delphacidae) in Korea)

  • 손병인;정종국;이준호
    • 한국응용곤충학회지
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    • 제53권4호
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    • pp.497-501
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    • 2014
  • 애멸구(Laodelphax striatellus (Fall$\acute{e}$n))는 벼줄무늬잎마름병을 매개하여 심각한 피해를 야기하는 벼 해충으로 국내에서 월동하는 토착종이며 중국에서 국내 서해안지역으로 비래하기도 한다. 본 연구는 애멸구의 분산과 개체군 동태의 기초자료로 활용하기 위해 국내 16지역에서 2014년 4월과 7월에 애멸구를 채집하여 발생시기에 따른 날개형태의 비율과 홍집게벌 기생율 현황을 파악하였다. 수컷은 4월보다 7월에 단시형의 비율이 유의미하게 낮았고, 암컷 단시형 비율은 차이가 없었다. 회귀분석 결과 4월의 단시형 비율이 위도가 증가함에 따라 증가하는 경향을 보였다. 약충 및 성충의 기생율은 7월보다 4월에 높았다. 또한 서해안지역의 약충 기생율이 대체적으로 높은 경향을 보였다.

Parasitoid Complex of the Gypsy Moth (Lymantria dispar) in the Increase-phase Populations in Korea

  • Lee, Jang-Hoon;Pemberton, Robert W.
    • Journal of Ecology and Environment
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    • 제32권2호
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    • pp.75-81
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    • 2009
  • The species composition of the parasitoid complex and the degree of parasitism by each species were analyzed for gypsy moth (Lymantria dispar) populations in the increasing phase. Total of 7,826 mid-late instar larvae and pupae were collected and reared from two collection sites in Gangwon Province, Korea. Two tachinid flies (Blepharipa schineri and Parasetigena silvestris), and the ichneumonid wasp (Coccygomimus disparis) were the most abundant parasitoids, in the order of decreasing importance. Other parasitoids occurring included Coteisa melanoscelus, Cotesia scheaferi, Glyptapanteles liparidis, Brachymeria lasus, and Exorista spp. The low incidence of the NPVirus is hypothesized to be an important factor in determining degree of parasitism rate by P. silvestris and B. schineri, and their relative dominance in the parasitoid complex.

인천지역에서 사육하는 개의 내부 기생충 감염실태 조사 (A survey on the prevalence of internal parasitism in dog of Inchon area.)

  • 박진수;황현순;김종훈;손봉환;이원창
    • 한국동물위생학회지
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    • 제20권1호
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    • pp.95-102
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    • 1997
  • Author investigated internal parasitism for the feces of dog's training center, breeding-dog farm, dairy farm, home by 120 indoor breeding dog and 566 outdoor one in Inchon area. This survey was done from February in 1994 to December in 1995. 1. As a result of total 686 samples, positives were 373(54.4%). Among them, indoor and outdoor breeding dogs were 21(3.1%) 352(51.3%), respectively. 2. According to breeding, it was manifested that 21samples (17.5%) of 120 indoor breeding dogs were positive, and 352 samples(62.2%) of outdoor breeding were positive. 3. The infection rate of dogs for food in dairy farm, breeding dogs in the farm, dog of training center and dog of house is high in order. 4. Infection rate of parasites in 24 dogs breeds, Mongrel dogs were 81.3%, Shepherds were 80.0%, Tosas were 78.4%, Akida and Siberian huskys were 76.2%, Jindos were 55.5%, Pointers were 50.0%, although Afghan hound, Spanial, Shin-tzu, Maltis and Buldog were examined as aparasites negative. 5. After administration with vermicide parasites infection rate were 43.0% in two months. In four months, it were 66.7%, and dogs without vermicide were 87.0%. It seemed like that further research about dosage of vermicide is needed. 6. The rate of single-infection was 37.6% and that of mixed-infection was 16.8%. Among classified 13 types, Ancylostoma caninum 35.6%, Toxocara cams 11.2%, Isospora sp 9.3%, Toxascaris leonina 5.1%, Trychuris vulpis 4.4% were investigated.

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제주 감귤원에서 귤굴나방에 대한 포식 기생자 천적의 자연 기생율 (Natural parasitism of parasitoids on Phyllocnistis citrella (Lepidoptera: Gracillaridae) in Jeju citrus orchards in Korea)

  • 현승용;임언택;김동순
    • 한국응용곤충학회지
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    • 제58권4호
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    • pp.299-303
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    • 2019
  • 본 연구는 감귤의 해충인 귤굴나방(Phyllocnistis citrella Stainton) 의 포식 기생자 천적의 종류와 기생률을 조사하기 위하여 수행하였다. 2013~2014 제주 감귤원에서 발견된 귤굴나방 포식 기생자 천적은 좀벌상과에 속한 총 7종을 발견되었다. 그 중 좀벌과에 속한 Sympiesis striatipes가 73%, Quadrastichus sp.가 22%로 우점하였다. 나머지 종은 Neochrysocharis sp., Ageniaspis sp., Pnigalio sp., Holcopelte sp., Trichomalopsis sp. (Pteromalidae) 등이었다. 천적의 평균 기생률은 관행방제 과원에서 10.7%, 무농약 과원에서는 32.2% 이었다.

남부지방에 있어서 끝동매미충 난기생봉의 종류 및 기생율에 관한 조사연구 (Egg Parasitism of Green Rice Leafhopper, Nephotettix cincticeps Uhler by Gonatocerus sp. and Paracentrobia andoi in Southern Rice Cultural Areas)

  • 장영덕
    • 한국응용곤충학회지
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    • 제19권2호
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    • pp.109-112
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    • 1980
  • 본답후기인 8중-9상순에 걸쳐 끝동매미충 난에 기생하는 기생봉의 종류와 이들의 기생율을 남부 4개 지역에서 재래품종과 통일계통 품종 포장에서 조사한 결과는 다음과 같다. 1. 난에 기생하는 실적으로 Gonatocerus sp. 2종과 Paracentrobia andoi 그리고 Anagrus sp. 1종 등 모두 4종의 난기생봉이 분포하고 있음이 밝혀졌다. 2. 기생율 조사 결과 Gonatocerus sp.의 평균 난괴기생율과 난립기생율은 각각 $58.8\%$$41.0\%$였고 Paracentrobia andoi의 경우에는 각각 $6.2\%$$5.3\%$로서 Gonatocerus sp.가 Paracentrobia andoi의 기생율 보다 훨씬 높안 우점종을 이루어 있었으며 이들 두 종이 같은 난괴에 혼재하는 율은 $5.4\%$였다.

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국내서식 야외 고양이의 기생충 감염 조사 (Intestinal parasite Infections in Stray Cats)

  • 강문일;한동운
    • 한국임상수의학회지
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    • 제20권3호
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    • pp.413-418
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    • 2003
  • This survey of endoparasite infections among stray cats in Korea has been carried out during November 1995 to October 1997. A total of 215 stray cats were collected from SeoulㆍGyeonggi (54), Gangwon (38), Chungchong (34), Jeonla (38), and Gyeoungsang (51) areas. The positive rate of endoparasites was 184 (85.6%) cats among 215. Of isolated parasites, nematodes were the most often detected parasites especially Toxocara cati (102 cats), Ancylostoma tubaeformae (9 cats). The next most often detected parasites were cestodes (60/215; 27.9%) sepecially Spirometra erinaecei (34 cats), Taenia taeniaformis (26 cats). Opisthorchis tenuicollis was found in bile duct (9 cats) and Isospora spp. were identified in 41 cats (19.1 %). In mixed parasite infection, the rate of infections of nematodes, trematodes and protozoas was 3.3%, nematodes and cestodes with 8.8%, nematodes and protozoa with 4.2%, cestodes and protozoa with 1.9%. In parasitic infection by a considering age category, age from 2 to 4 years had the highest infection (92.3%), 1-2 years were 87.6%, over 4 years was 80.0%. 79.6 percents of the stray cats in SeoulㆍKyounggi areas were ranked the 1st in parasite infection. The next was Kyoungsang 76.5%, Kangwon 65.8%, Cholla 63.2% and Chungchong 61.8% in order. Considering age categories from birth to greater than 4 years, parasite infections were most prevalent in cats 2 to 4 years old; other ages seemed to have no effect on prevalence of parasitism. Also sex seemed to have no effect on prevalence of parasitism. In endoparasite infection, nematode and cestode infections were most frequently found, trematode infections were low, coccidiosis was showed very often.

Effect of Host Egg Color Dimorphism on Interactions Between the Vinous-throated Parrotbill (Paradoxornis webbianus) and Common Cuckoo (Cuculus canorus)

  • Yoo, Jeong-Chil;Lee, Jin-Won
    • Animal cells and systems
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    • 제8권2호
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    • pp.77-80
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    • 2004
  • To investigate the effect of host egg color dimorphism on the vinous-throated parrotbill (Paradoxornis webbianus) - common cuckoo (Cuculus canorus) interactions, we monitored breeding nests of vinous-throated parrotbills, and conducted model egg experiments, using two colors: white and blue. Of the 190 nests examined in this study, cuckoo parasitism occurred at 10 nests (8 blue and 2 white egg clutches, respectively), and only blue cuckoo eggs were found. This frequency was similar to the egg-color ratio of all host nests found (151 blue and 39 white egg clutches). Vinous-throated parrotbills showed high rejection rate towards both cuckoo eggs and model ones. There was a significant difference in rejection rates towards mimetic (blue) and non-mimetic (white) eggs in blue egg clutches. Mimetic eggs put in nests took significantly longer to be rejected than non-mimetic ones. The most common rejection method used by the hosts was egg ejection (puncture-ejection). The costs of ejecting non-mimetic eggs tended to be lower than those of ejecting mimetic eggs. These results indicate that egg-color dimorphism in this species favors the individuals having white egg clutches in terms of higher rejection rate and lower ejection costs of the parasitic eggs. This study also suggests that egg-color dimorphism of the vinous-throated parrotbill decreases the effect of cuckoo parasitism on host populations.

솔잎혹파리 확산지역에서 솔잎혹파리와 기생봉의 상호작용 (Interactions between Pine Needle Gall Midge, Thecodiplosis japonensis (Diptera: Cecidomyiidae), and its Parasitoids in Newly Invaded Areas)

  • 박영석;정여진;전태수;이범영;이준호
    • 한국응용곤충학회지
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    • 제40권4호
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    • pp.301-307
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    • 2001
  • 솔잎혹파리가 새로운 지역에 침입하여 극심한 피해를 일으킨 후 회복하는 과정에서 솔잎혹파리와 천적 기생봉의 상호작용을 분석하였다. 솔잎혹파리 확산 선단지 26개 지점에서 1975년부터 1997년까지 조사된 솔잎혹파리 충영형성율, 기생봉 밀도 및 기생율 자료를 분석한 결과, 솔잎혹파리 침입초기인 1975년의 충영형성율은 평균 34.8% 이었으나 1980년 이후 크게 감소하여 밀도가 안정화되었다. 기생봉의 기생율은 침입초기에는 1.9%로서 낮았으나 시간이 진행됨에 따라 기생율이 증가하여 솔잎혹파리에 의한 피해가 만성적으로 발생하는 1990년대에는 12% 이상으로 크게 증가하였다. 충영형성율과 기생봉 미도와의 관계는 초기에는 서로 상관성이 매우 낮았으나 솔잎혹파리의 침입후 약 10년 이후에는 충영형성율 증가에 따라 기생봉의 밀도도 점근적으로 증가하는 양상을 나타내었다. 또한 충영형성율에 따른 기생율도 초기에는 명확한 경향성이 없었지만 솔잎혹파리 침입 10년 후에는 보다 명확한 밀도역의존적 특성을 나타내었다. 이러한 결과는 솔잎혹파리와 기생봉의 상호작용이 설정되어 있지 않지만 침입 후 약 10년경부터 기주-기생자간의 전형적인 상호작용 양상을 보이며, 기생봉의 밀도조절 능력은 솔잎혹파리 피해가 많은 발생초기에는 미약하지만 솔잎혹파리 밀도가 낮은 피해회복지역에서는 높은 밀도조절 능력을 가지고 있다는 것을 제시하였다.

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