• Title/Summary/Keyword: cabbage butterfly

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A Study on Difficulties Experienced by Pre-service Elementary School Teachers in Carrying out a Research on 'the Life Cycle of a Common Cabbage Butterfly' (초등 예비교사들이 '배추흰나비 한살이' 탐구 수행과정에서 겪는 어려움)

  • Kim, Dong-Ryeul
    • Journal of Korean Elementary Science Education
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    • v.33 no.2
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    • pp.306-321
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    • 2014

  • This study aims to analyze difficulties that pre-service elementary teachers experience in investigating the life cycle of a common cabbage butterfly in person. As difficulties they face during the process of this research, they pointed out collecting eggs, observing molting, creating environments for a breeding cage, feeding, building a breeding cage, and making butterfly specimens. Out of all the environmental difficulties related to their school fields, they pointed out a difficulty of time management most of all, followed by placing a breeding cage in the classroom and the lack of microscopes for observation. In regard to difficulties related to their evaluations on students' activities, they found it difficult to evaluate students' activity with the life cycle of an insect in the aspect of knowledge and even to set evaluation criteria. Besides, many of them responded that it would be appropriate to evaluate a research on the life cycle of an insect through a portfolio or an observation journal. In regard to difficulties in terms of teachers' knowledge, they found it difficult to understand insect molting, metamorphoses, complete metamorphoses, incomplete metamorphoses, the structure of an insect body, and how to distinguish a female insect from a male one. In regard to the application of class models, they knew it is important for students to have various experiences through direct observation, so the experience-based learning model was proper for the process of observing the life cycle of a common cabbage butterfly. However, they found it difficult for students to observe each stage of the life cycle in person.

  • https://doi.org/10.15267/keses.2014.33.2.306 인용 PDF KSCI

A Study on Knowledge Conversion Types in Pre-service Elementary Teachers Inquiring 'The Life Cycle of Cabbage Butterfly' (초등 예비교사들의 '배추흰나비 한살이' 탐구에서 나타난 지식변환 유형 탐색)

  • Kim, Dong-Ryeul
    • Journal of Korean Elementary Science Education
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    • v.38 no.4
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    • pp.484-495
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    • 2019

  • This study divided pre-service elementary school teachers' knowledge conversion into four types, socialization, externalization, combination and internalization, based on their inquiry activities on the life cycle of cabbage butterfly. As research subjects, this study collected results from 24 pre-service elementary school teachers who carried out inquires on the life cycle of cabbage butterfly for about 2 months. The type of socialization indicates the conversion of tacit knowledge into tacit knowledge, and this study found out that pre-service elementary school teachers acquired and accumulated tacit knowledge from their fellow pre-service teachers, professors and even acquaintances inside and outside the lab. However, there appeared no process that they shared their tacit knowledge with other pre-service teachers or delivered it to them. The type of externalization indicates the conversion of tacit knowledge into explicit knowledge, and this study discovered some cases that pre-service elementary school teachers expressed their inner tacit knowledge into explicit knowledge. However, there was no case found that they converted the verbally-unexpressed tacit knowledge of their fellow teachers or experts into well-defined explicit knowledge. The type of combination indicates the conversion of explicit knowledge into explicit knowledge, and this study discovered some cases that they collected explicit knowledge and converted it into new explicit knowledge for the acquisition, integration and delivery or distribution of explicit knowledge. However, there were few cases that they creatively devised new explicit knowledge by acquiring new knowledge through direct observation and supplementing the existing explicit knowledge. The type of internalization indicates the conversion of explicit knowledge into tacit knowledge, and this study discovered both explicit knowledge embodied through personal experiences and explicit knowledge embodied through simulations and experiments that formed tacit knowledge in process of examining the existing explicit knowledge.

  • https://doi.org/10.15267/keses.2019.38.4.484 인용 PDF KSCI

Establishment of the Successive Rearing Method of Cabbage Butterfly, Pieris rapae L. in a Room Condition (배추흰나비의 실내 계대사육법 확립)

  • 설광열;김남정
    • Korean journal of applied entomology
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    • v.40 no.2
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    • pp.131-136
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    • 2001

  • Cabbage butterfly, Pieris rapae was reared in a room to establish a year-round rearing system. The eggs oviposited by the parent fed on host plant showed 89.2% of hatchability and hatched in 3.9 days after oviposition. The larval period was 18.1 days under high temperature, long day condition ($25^{\circ}C$, 16L : 8D), showing 97.8% pupal ratio and emergence rate. However, under low temperature, short day condition ($21^{\circ}C$, 10L : 14D) the larval period extended to 23.6 days and the pupal ratio was 70%. All of those pupae went into diapause. The oviposition preference experiment on different hosts (Chinese cabbage, cabbage, tulip and kale) showed that hot-water extract was preferred over methanol extracts or squeezed raw juices. The host preference showed that Chinese cabbage was less preferred than the other three. The artificial ovipositing kit was constructed for the oviposition in a room. The 48-hours old eggs could be stored for 7 days at$ 5^{\circ}C$ and showed 70% of hatchability. Non-diapausing pupae could be stored for 30 days at 5 to $15^{\circ}C$, showing 85% of emergence rate. However, the pupae stored at $5^{\circ}C$ showed longer storage period and higher emergence rate. The systematic successive rearing method of cabbage butterfly in a room was completed, based on the above experiments.

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An Ultrastructural Study on the Nerve Cell Bodies of Subesophageal Ganglion from the Cabbage Butterfly, Pieris rapae L. (배추흰나비 식도하신경절(食道下神經節)의 신경세포(神經細胞)에 관(關)한 미세구조적(微細構造的) 연구(硏究))

  • Kim, Woo-Kap;Lee, Bong-Hee
    • Applied Microscopy
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    • v.11 no.1
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    • pp.1-9
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    • 1981

  • The study on the nerve cells in the subesophageal ganglion of 5-day-old cabbage butterfly, Pieris rapae L., was performed to observe their ultrastructures and classify them on the basis of the differences in size, shape and relative distribution of cell organelles. 1. Type I neurons: These cells are neurosecretory granules ranging 100 to 300 nm in size. 2. Type II neurons: As giant neurons averaging 25 to $30{\mu}m$ in size, such as mitochondria and Golgi apparatus. 3. Type III neurons: These spindle-shaped cells range 9 to $15{\mu}m$ in width. 4. Type IV neurons: These cells have a range of diameter from 12 to $16 {\mu}m$. The cells are abundantly observed in the subesophageal ganglion. 5. Type V neurons: These cells are very small nerve cells with 4.5 to $8.0{\mu}m$ in size and have a prominent nucleus.

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Induction and Purification of Antibacterial Proteins in Larval Haemolymph of Cabbage Butterfly, Artogeja rapae (배추흰나비의 유충 혈림프로 부터 항균단백질의 유도와 분리)

  • 여성문;방인석;장병수;조은정
    • The Korean Journal of Zoology
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    • v.38 no.3
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    • pp.305-312
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    • 1995

  • The Injection of viable Escherichia coli K-12 with fifth instar larvae of cabbage butterfly, Artogeia rapae, induced at least five groups of proteins with the antibacterial activity against certain Gram-negative and/or Gram-positive bacteria in the haemolymph. These antibacterial proteins were separated and one was purified by different types of chromatography. The purified protein was heat-stable and basic peptide, and its molecular weight was approximately 4 kDa. We propose the name hinnavins for this antibacterial peptide.

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Immunocytochemical Mapping of Serotonergic Neurons in Postembrvonic Brains of Cabbage Butterfly Pieris rcpce (배추흰나비 유충, 용, 성충의 뇌에 분포하는 세로토닌 면역반응성 신경원)

  • 이봉희;심재원
    • The Korean Journal of Zoology
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    • v.35 no.4
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    • pp.428-438
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    • 1992

  • The serotonin-immunoreactive (5-HTil neurons have been investigated in the brains of lanra, pupa and adult from Pieris ropae. There are ca. 54 5-HTi neurons in 5-instar larva, ca. 20 in 2-dav-old pupa and ca. 118 in 1-day-old adult, respectively. Most of these 5-HTi neurons are interneurons, but efferent and afferent 5-HTi neurons were also observed. Most of the 5-HTi neurons project into the central neuropils of postembrvonic brains. The larval brain contains abundant 5-HTi processes in the central neuropils, including those in three cerebral commissures. But in the pupal brain the 5-HTi processes are restricted in small numbers to the given regions of central neuropil. The adult brain contains a large number of 5-HTi processes in mushroom body, central body complex, lateral protocerebrum, protocerebral bridge, antennal lobe, and tritocerebral and suboesophageal neuropils. However, the 5-HTi processes are not found in the optic lobe of the brains. One prominent feature of the 5-HTi fibers in the postembrvonic brains is the fact that they are greatly arborized.

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