• 수산해양기술연구
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• 제56권3호
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• pp.202-212
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• 2020

In order to replace sardine baits for octopus pot, an efficacy experiment to lure with alternative bait (fermented skate or chicken skin in artificial crab or northern clam) pots and sardine pot were conducted in a circular water tank. The soaking time of the sardine bait was divided into two categories: six days or less and seven days or more. The behavioral response of octopus to the artificial bait pots and sardine pot were investigated. In the comparison of the luring effects between pots with fermented skate inside artificial crab or northern clam and sardine pot, the pot with artificial crab + fermented skate had better results than the other pots in the section distribution (31.6%) and the number of times the pot was entered into (20.0%) (p > 0.05). In the comparison of the luring effects between pots with chicken skin inside artificial crab or northern clam and sardine pot, the pot with northern clam + chicken skin had better results than the other pots in the section distribution (22.6%) and number of times the pot was entered into (55.6%) (p < 0.05). The results were also better compared to those of pot with artificial crab + fermented skate. From these results, it seems that in the luring effect aspect, sardine bait can be replaced with artificial bait consisting of chicken skin inside northern clam.

• 수산해양기술연구
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• 제55권3호
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• pp.190-197
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• 2019

This study investigated the luring effect of the sardine bait, which is used to catch octopus with pot, as the preliminary study for the development of alternative bait for octopus pot. The soaking time for bait was divided into "5 days or less" and "11 days or longer" The number of times octopus entered the pot with bait and the empty pot was investigated under dark adaptation and light adaptation processes and the distribution of tank section was investigated under light adaptation process. The case of "11 days or longer" sardine soaking time showed higher rate of distribution in the section of pot with bait compared to the case of "5 days or less" In the case of "5 days or less" soaking time, the number of times the octopus entered the pot with bait was similar to that it entered the pot without it even during dark adaptation and light adaptation. However, in the case of "11 days or longer", the octopus entered the pot with bait more quickly than the pot without bait and more frequently during dark adaptation hours. There were cases where the octopus did not enter any pot. In the case of "5 days or less", with less decomposition of baits, the octopus entered the empty pot more during light adaptation process, and it appeared that the pot was used as a hideout.

• 수산해양기술연구
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• 제44권4호
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• pp.282-293
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• 2008

In order to develop the substitutive materials for natural baits of swimming crab pots, the attracting effects of swimming crab such as the preference of baits which were made of the by-products of marine and stock raising through the water tank experiments and fishing experiments. On the investigation of mean entrapped catch number to the pot by the baits after putting the 4 kinds of baits, mackerel(M), mackerel with grinded mackerel s internals($MM_I$), mackerel with tuna s internals$MM_I$) and makerel with grinded krill(MK) each in one pot by turns, $MM_I$ and MK were entrapped mean 3.9(13.0%) and they were a little more comparing to M, and $MT_I$ is least with mean 2.1(7.0%)(F=12.913, P < 0.05). Otherwise, on the preference investigation of swimming crabs by the baits after putting the 4 kinds of baits in the 4 pots each, M was entrapped mean 3.0(10%), but $MM_I$, $MT_I$ and MK were mean 1.2(4.0%), 1.0(3.3%) and 1.5(5.0%) each and they were only 30-50% of M(F=13.398, P < 0.05). On the preference investigation of swimming crabs by the 5 kinds of baits, mackerel(M), and krill(K), manila clam($M_C$), pig s fat($P_F$) and chicken s head($C_H$) which were used in substitutive baits, M was entrapped mean 3.2(10.7%), but K was about 50% of catch of M with mean 1.6(5.3%), and $M_C$, $P_F$ and $C_H$ were very few with mean 0.1-0.2(0.3-0.7%)(F=89.186, P < 0.05). On the preference investigation of swimming crabs by the pots which were put each the 3 kinds of baits, original krill(K), grinded krill with gluten and soybean oil cake($K_GGS$) and grinded krill with gluten, soybean oil cake and glycine($K_GGSG_L$) in the blue fluorescent hexahedral plastic bait cages(BF), and which were put the mackerel(M) in the non-fluorescent hexahedral red plastic bait cage($RF_N$), it was entrapped mean 3.0(10.0%) in the pot which was put the mackerel in the $RF_N$, and the same level in the pots which were put the K and $K_GGSG_L$ in the BF, but it was mean 2.0(6.7%) in the pots which was put the $K_GGS$ in BF and it was decreased by 30% of catch comparing to $RF_N$(F=3.750, P < 0.05). On the preference investigation of swimming crab by the pots which was put grinded tuna with gluten, soybean oil cake and glycine($T_IGSG_L$) in the blue fluorescent hexahedral plastic bait cage(BF), and which was put mackerel(M) in the nonfluorescent hexahedral red plastic bait cage($RF_N$), it was entrapped mean 3.3(11.0%) in the pot which was put mackerel in $RF_N$, and mean 2.7(9.0%) in the pot which was put $T_IGSG_L$ in BF and it was about 15% less comparing to use bait M(t=1.387, P < 0.05). As a results of fishing experiments, a plan for enhancing catching efficiency of $T_IGSG_L$ will be required because catching efficiency of $T_IGSG_L$, alternative bait, was half of fish catching efficiency of natural bait using mackerel. Fishing experiments were conducted 3 times using reinforced substitutive artificial bait that is reinforced attractive effect of $T_IGSG_L$ and composed of tuna intestine, grinded mackerel, gluten, soybean cake, glycine and alanine($T_IM_GGSG_LA$). Catching efficiency of $T_IM_GGSG_LA$ was about 80% of that of natural bait made of mackerel.

• 한국어류학회지
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• 제20권2호
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• pp.105-111
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• 2008

다랑어낚시 및 사용미끼에 따른 어획률을 비교하기 위해, 2006년 9~10월간 태평양 중동부 해역에서 다랑어연승 시험조사가 수행되었다. 일반선형모형(GLM)을 이용하여 재래식 다랑어낚시 1종(J4)와 환형낚시 3종(C15, C16, C18), 미끼 5종(고등어(CM), 전갱이(JM), 밀크피쉬(MF), 정어리(SD), 오징어(SQ)) 및 낚시심도를 나타내는 낚시 순번들이 눈다랑어 어획률(1,000낚시당 마리수)에 미치는 효과를 평가하였다. 총 28회 조업에서 낚시순번 간 눈다랑어 어획률에는 유의한 차이가 인정되었다. GLM분석에서 낚시순번에 의한 눈다랑어 어획률 편차는 33%로 나타났다. 미끼 종류 간 어획률 차이는 그 편차가 2.7%로 적게 나타났고, 낚시형 4종 간 그 차이는 매우 적어 유의하지 않게 나타났다. 따라서, 낚시형 및 미끼 종류의 선택은 다랑어 연승어업에서 눈다랑어 어획률 차이에 영향을 주지 않는 것으로 평가되었으나, 어획수심을 나타내는 낚시순번은 눈다랑어 어획률에 영향을 주는 요인으로 판단되었다.

• 농약과학회지
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• 제17권4호
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• pp.454-459
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• 2013

난방제 해충의 하나인 파밤나방의 생물적 방제를 위하여 곤충병원성 곰팡이를 수집, 분리하여 파밤나방에 고병원성인 곰팡이를 선발하는 연구를 수행하였다. 곤충병원성 곰팡이의 수집은 친환경 농업지역인 경기도 양평 지역의 수집된 토양 샘플에 갈색거저리를 넣어 감염된 곤충에서 곰팡이를 분리, 수집하는 insect-bait법을 활용하였다. 분리한 곤충병원성 곰팡이를 파밤나방 3령 유충에 처리한 결과, FT83균주가 파밤나방에 병원성이 높았으며, 현미경을 이용한 형태학적 분석과 18srRNA의 ITS sequencing을 통한 분자생물학적 방법을 이용하여 동정한 결과 Metarhizium anisopliae로 동정되었다. 선발한 M. anisopliae FT83의 온도별 균사생장속도는 $15^{\circ}C$에서 $30^{\circ}C$까지는 온도가 증가할수록 균사의 생장이 촉진되었으나 35에서는 균사가 생장하지 않았다. 선발 균주의 농도별 살충율은 $1{\times}10^6$ conidia/ml에서 $81.6{\pm}9.3%$, $1{\times}10^7$ conidia/ml에서 100%, $1{\times}10^8$conidia/ml에서 100%로 $1{\times}10^7$ conidia/ml 농도가 경제적인 처리농도였다.

• Journal of the Korean Wood Science and Technology
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• 제50권6호
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• pp.458-474
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• 2022

Many methods have been explored to increase the palatability of pine (Pinus merkusii), the most common wood used for termite baiting. However, because of the undersupply of pine in Indonesia, it is crucial to vary the wood species for termite baiting and look for potential alternatives. Furthermore, various studies have shown that baiting time influences the intensity and pattern of termite attacks. Therefore, the present research aimed to study the preferences of subterranean termites and find the ideal baiting time among community wood species from Bogor, West Java, as a baiting alternative to pine. The woods tested were Acacia mangium (acacia), Falcataria moluccana (sengon), Anthocephalus cadamba (jabon), Maesopsis eminii (manii), Swietenia mahagoni (mahogany), Hevea brasiliensis (rubberwood), and P. merkusii (pine). Field tests were carried out based on the American Society for Testing and Materials D 1758-06 at the Arboretum, Faculty of Forestry and Environment, IPB University, with a baiting time of one to six months. The results led to the identification of four species of termites, namely Microtermes sp., Macrotermes sp., Shedorhinotermes sp., and Capritermes sp.. The frequency of termite attacks on the test site reached 93.1%. Rubberwood was the most potential wood bait for subterranean termites, indicated by the highest average weight loss value (65.8%) with a shorter optimal baiting time (up to one month) than that of other tested woods.

• 한국균학회지
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• 제46권4호
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• pp.479-490
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• 2018

고추의 주요 병해충인 총채벌레(Thrips palmi)와 탄저병(Colletotrichum acutatum)을 방제하기 위해 다양한 화학농약이 사용되고 있지만, 농약의 오남용으로 인하여 이에 대한 저항성이 발생하여 방제가 힘들어지고 환경오염을 초래하는 문제가 있다. 그리하여 본 연구에서는 이러한 문제를 극복하고자 총채벌레에 대한 살충효과와 탄저병에 항균력이 우수한 균주를 선발하여 동시 방제의 가능성을 확인하고자 하였다. 토양으로부터 분리한 곤충병원성 곰팡이 13균주($1{\times}10^7conidia/mL$)를 오이총채벌레 성충과 약충에 처리하여 70~100%의 우수한 살충률을 나타내는 6균주를 선발하였다. 선발한 6균주의 항균활성을 검정하기 위하여 고추 탄저병균에 대치 배양한 결과, 항균력이 우수한 FT333 균주를 최종 선발할 수 있었다. 최종 선발된 균주를 형태학적 조사와 internal transcribed spacer, ${\beta}-tubulin$ 영역의 염기서열 분석을 통하여 Isaria javanica로 동정하였고, I. javanica FT333으로 명명하였다. I. javanica FT333 (KACC93316P)의 고추 탄저병균에 대한 방제 효과를 기내에서 검정한 결과($1{\times}10^5$, $1{\times}10^6$, $1{\times}10^7conidia/mL$) 95% 이상의 방제효과를 나타내었다. 이러한 결과들을 바탕으로 I. javanica FT333 균주가 고추 탄저병균과 미소해충인 오이총채벌레를 동시에 방제하기 위한 미생물제제로서 이용될 수 있는 가능성을 제시하였다.