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- Korean journal of applied entomology
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- v.34 no.1
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- pp.70-74
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- 1995
A study on seasonal changes in age structure and fecundity of Gryllotalpa africana Palisot de Beauvois was conducted in Suwon from 1991 through 194. It seemed that most of newly hatched nymphs emerge to adults in September and October, so have a life cycle a year, and some overwinter as nymphs and emerge to adults from August, so have a life cycle tow years. The mean number of eggs per cell was $36.00\pm$2.84 for egg cells laid in the laboratory, and $47.68\pm$4.35 for egg cells collected in the field. Mean and range of the numbers of egg cells produced per female were $1.17\pm$0.19 and 0~3.
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Kim, Doo;Ahn, So-jeo;Jeoung, Seok-young;Hwang, Jae-woong;Pak, Son-il
- Journal of Veterinary Clinics
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- v.21 no.2
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- pp.87-92
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- 2004
This study was undertaken to compare the serological response of dogs to four commercially available combination vaccines and three different vaccination schedules to canine distemper virus (CDV). A total of 120 healthy puppies (20 puppies per group) at 6 weeks of age were randomly assigned to one of four vaccines [C, G, K, and V (or V3) groups] and one of vaccination schedules [V2 and V4 groups]. At six, nine, and 12 weeks of age, puppies in each group were vaccinated with one of four combination vaccines subcutaneously. And puppies in V2 and V4 groups were vaccinated with V vaccine every 2 weeks and 4 weeks, respectively. The serological responses to CDV component of the vaccines were determined by measuring SN titers. The immunogenicity of V vaccine was superior to the other vaccines and optimum vaccination schedule was 3 times vaccination with 3 weeks-interval starting vaccination at 6 weeks of age. Although puppies were vaccinated at 6 weeks of age, the geometric mean CDV titers of puppies in all groups by 9 weeks of age were under the protective level. Therefore, prophylactic measures should include isolation of young dogs from the dog population until vaccination can be expected to provide protection.
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Kim, Doo;Jeoung, Seok-young;Ahn, So-jeo;Jung, Jong-ho;Park, Son-il
- Journal of Veterinary Clinics
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- v.21 no.1
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- pp.1-6
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- 2004
This study was undertaken to provide the appropriate vaccination protocol of canine parvovirus (CPV) vaccine for the companion dogs in Korea. A total of 120 healthy pups (20 pups per group) at 6 weeks of age were randomly assigned to one of four commercially available vaccines [C, G, K, and V groups] and one of vaccination schedules [V2 and V4 groups]. The serological responses to the CPV component of the vaccines were determined by measuring HI titers. The maternal antibodies was declined to under the protective level at 6 weeks of age. Therefore, it was considered that vaccination of pups for CPV should be started at 6 weeks of age. And when the combination vaccine was used, the immunogenicity of V vaccine was superior to the other vaccines and optimum vaccination schedule was 3 times vaccination with 3 weeks-interval starting vaccination at 6 weeks of age. Although pups were vaccinated at 6 weeks of age, the geometric mean CDV titers of pups in all groups by 9 weeks of age were under the protective level. So, hygienic measures including avoiding to exposure to the high risk areas were needed to prevent CPV infection in this period.
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