著者

赤嶺 淳

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.12, no.3, pp.4-5, 2007-11-25

著者

小寺 祐二 神崎 伸夫 金子 雄司 常田 邦彦

出版者

「野生生物と社会」学会

雑誌

野生生物保護 : Wildlife conservation Japan (ISSN:13418777)

巻号頁・発行日

vol.6, no.2, pp.119-129, 2001-07-31

被引用文献数

18 10

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Habitat selection of Japanese wild boars, Sus scrofa leucomystax, was studied by radio-tracking and analyses of activity sign distributions in Iwami district, Shimane Prefecture. Four radio-collared wild boars were located once a day during daytime from October 1994 to August 1997. All animals significantly preferred broad-leaved forest. On the other hand, three significantly avoided coniferous plantation. Activity signs were counted seasonally at 5 vegetation types during August 1996 to February 1999. At abandoned paddy number of rooting sites were found significantly more than other vegetation types, while those at coniferous plantation were significantly fewer through the year. Number of rooting site at bamboo thickets was also significantly more, but that at broad-leaved forest was significantly fewer in all seasons except fall. Population decrease and workers who progressively became old have caused increase of less managed broad-leaved forests and abandoned paddies in hilly and mountainous area, which provide favorable food and resting places for this animal. The socio-economic change may be one of the reasons of recent rapid expansion of wild boar in Shimane prefecture.

著者

和田 一雄

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.6, no.2, pp.67-73, 2000-12-22

被引用文献数

1

著者

和田 一雄

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.9, no.3, pp.62-63, 2004-12-01

著者

安田 章人

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.17, no.2, pp.24-25, 2013-01-31

著者

小川 潔 本谷 勲

出版者

「野生生物と社会」学会

雑誌

野生生物保護 : Wildlife conservation Japan (ISSN:13418777)

巻号頁・発行日

vol.6, no.1, pp.1-14, 2001-02-28

被引用文献数

2

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A follow-up survey of dandelion plants (Taraxacum) in 1990-1992, ten years after the initial survey using the same site designation methods in the southern Kanto district, revealed the following facts. Firstly, in the Tokyo urban area, the occurrence of both dandelion species had little changed; that is, the introduced one dominated there. Secondly, in the suburban areas, the number of lots in the recent survey where the native diploid species dominated had decreased compared with the previous survey, whereas the number of lots where the introduced species dominated had increased. Third, analysis of land-use in the two surveys revealed that a sharp decrease in cultivated fields, which are preferred by the native diploid species, caused a 48.7% drop in this dandelion's occurrence in the suburban areas. The count of the introduced dandelions also dropped by 3.5% in southern Tama, one suburb area. This species decreased in sites such as roadsides and vacant areas that have diminished, and increased on areas such as parking lots and children's playgrounds that have been expanded over the last ten years. These findings clarified the fact that decreases in habitat resulted in the retreat of ranges and declines in the frequency of occurrence for both dandelion species in the urban and suburban areas.

著者

神崎 伸夫 見宮 歩 丸山 直樹

出版者

「野生生物と社会」学会

雑誌

野生生物保護 : Wildlife conservation Japan (ISSN:13418777)

巻号頁・発行日

vol.8, no.1, pp.1-9, 2003-02-21

被引用文献数

11

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To evaluate the condition of agricultural damages by Japanese wild boars (Sus scrofa) and Japanese monkeys (Macaca fuscata), and farmers' attitude toward it, a questionnaire was conducted in Yamanashi Prefecture in 1998. There were 338 respondents, and the response rate was 56.3%. Both wild boars' damages, mostly to rice, potatoes, and corns, and monkeys' damages, mostly to persimmon, pumpkin, soybean, and potatoes, increased rapidly in the Heisei era (1988-). Most of the farmers hoped to decrease or exterminate boar and monkey populations, and few of them supported the idea to make compensation system or to build fences around their farms. Respondents who would maintain their farming consist 41.7%, however 32.5% would shrink their activity and 25.1% would abandon it. Respondents suffering damages thought to shrink or abandon their activity significantly more than the other respondents (X^2-test, p<0.05).

著者

大澤 正喜

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.15, no.1, pp.36-37, 2010-08-10

著者

小寺 祐二 神崎 伸夫

出版者

「野生生物と社会」学会

雑誌

野生生物保護 : Wildlife conservation Japan (ISSN:13418777)

巻号頁・発行日

vol.6, no.2, pp.109-117, 2001-07-31

被引用文献数

9

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To analyze food habits, nutritional condition and these relationships of Japanese wild boar (Sus scrofa leucomystax), 260 stomach contents were collected between September 1994 and April 1995 in Iwami district, Shimane Prefecture, western Japan. They were analyzed using point frame methods (Leader-Williams et al. 1981). Dicotyledons was the most abundant food item in September and October (36.7%, 35.9% volumes respectively), however acorn became the principal food in October and November (26.3%, 25.3%). Root and tuber were the most preferred food between December and April (43.2-62.2%). Percentages of crude protein of stomach content were between 7.8% and 18.2%, which were beyond the optimal level specified for swine (National Research Council 1979) except February. Percentages of crude fat was 9.0% in September, increased to 17.7% in October, and then gradually decreased to 5.3% in February. Kidney fat index was also low in September (22.6%), increased to 48.2% in November, and then decreased to 25.3% in April. Acorn availability was thought to influence the nutritional condition of wild boars.

著者

小寺 祐二 神崎 伸夫 金子 雄司 常田 邦彦

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.5, no.4, 2000-08-28

著者

横畑 泰志

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.9, no.3, 2004-12-01

著者

覚張 進 丸山 直樹

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.14, no.1, pp.16-18, 2009 (Released:2017-11-03)

著者

池田 敬

出版者

「野生生物と社会」学会

雑誌

野生生物と社会 (ISSN:24240877)

巻号頁・発行日

vol.11, pp.79-85, 2023 (Released:2023-11-09)

参考文献数

27

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Sika deer populations must be reduced to control their distribution expansion and decrease damage to agricultural crops and ecosystems. However, due to aging hunters, wildlife managers need to capture deer efficiently. Considering these aspects, capture by feeding has been proposed, but there is no information on the attractiveness of mineral salts to male or female deer. Therefore, we conducted feeding experiments from May to September 2019 to evaluate the attractiveness of mineral salt based on sex. Our results showed that the feeding frequency of mineral salts was higher than that of the other three baits, and the feeding frequency in female deer was higher than that in males. By contrast, we found no differences in the staying time of mineral salts between male and female deer, and the feeding frequency of mineral salts for males increased with time from the start of the attraction. Therefore, mineral salts may sufficiently attract male and female deer, especially during the initial phase of attraction, and may selectively attract females later. To efficiently attract females using mineral salts, it is necessary to know the herd composition in the target area and verify their attractiveness of mineral salts.

著者

關 義和

出版者

「野生生物と社会」学会

雑誌

野生生物と社会 (ISSN:24240877)

巻号頁・発行日

vol.10, pp.21-25, 2022 (Released:2022-06-24)

参考文献数

36

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This study aimed to investigate the distribution of Japanese serows (Capricornis crispus) in Hakone, Kanagawa, Japan, which has not been confirmed since the Meiji era. A total of 15 automatic cameras were set up from October 2017 to September 2020 (12047.6 camera-days) in the Hakone Nature Forest of Tamagawa University. Japanese serows were observed on four occasions (October 31, 2017, and June 3, June 4, and September 14, 2019) at two sites, providing the first reliable record of the presence of serows in Hakone. Although the previously confirmed areas inhabited by Japanese serows were at a distance > 10 km from the present study area, the recorded distance was considerably larger than the diameter of the home ranges (which was assumed to be circular in shape) and the dispersal distances of Japanese serows. The findings of this study suggest that Japanese serows may be continuously distributed from the study area to the previously confirmed inhabited areas.

著者

Shunta Ando Toru Oi

出版者

「野生生物と社会」学会

雑誌

野生生物と社会 (ISSN:24240877)

巻号頁・発行日

vol.11, pp.23-29, 2023 (Released:2023-04-13)

参考文献数

28

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Management of wild mammals in urban green areas is a growing issue of concern in Japan, because some dangerous mammals have begun to use such areas as habitats or travel pathways. We investigated the mammal fauna in the linear green area located within the urban zone of Kanazawa City, Japan between June and December 2018. Using camera traps, we observed 11 mammal species or species-groups in the green area, the majority of which were medium-sized facultative omnivores. The long forest edge of the green area may have had positive effects on the otherwise low population-carrying capacity for some species. Large mammals did not inhabit the green area permanently, but the area may function as a travel pathway for these species into the city center. Further studies are required to clarify the essential characteristics of the green area, which harbors the mammal fauna revealed by the present survey, and to develop concrete management plans.

著者

吉田 英利佳 崎山 智樹 片平 浩孝

出版者

「野生生物と社会」学会

雑誌

野生生物と社会 (ISSN:24240877)

巻号頁・発行日

vol.11, pp.43-48, 2023 (Released:2023-04-27)

参考文献数

26

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国立公園では,利用者の増加に伴い野生生物とのトラブルや環境悪化など様々な問題が生じている.今回我々は,大雪山国立公園内の岩塊堆積地に生息するエゾナキウサギ(Ochotona hyperborea yesoensis)の生息地において,散乱しているごみの存在に気づいた.そこで利用客が多く訪れる生息地を対象に,ごみの数や品目を明らかにすることを目的として,目視による回収調査を実施した.2021年7月30日から8月6日にかけて,大雪山国立公園内の5地点(十勝岳望岳台探勝路・駒止湖・東ヌプカウシヌプリ・白雲山・岩石山)で計11.2時間(平均2.2 h/地点)探索し,合計26個のごみを発見した(発見効率2.3個/h).これらのうちプラスチック製品が多くを占め,空き缶やタバコの空き箱も含まれた.ごみは岩の隙間に落ちているケースが多く,いずれもエゾナキウサギの観察を目的としたレクリエーション時に由来すると推察された.20年以上の長期にわたり残存し続けてきたと思われる缶ごみもあり,周辺環境へ化学物質が溶出している可能性も疑われる.今後のより良い公園利用のために,関係行政主導の定期的な清掃や利用者意識を高める働きかけはもちろん,ごみに気づいた者が率先して持ち帰るような互助的行動の普及が望まれる.

著者

藤井 太一 村上 真善 南 基泰

出版者

「野生生物と社会」学会

雑誌

野生生物と社会 (ISSN:24240877)

巻号頁・発行日

vol.11, pp.11-22, 2023 (Released:2023-04-03)

参考文献数

35

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A survey of mammal fauna using a total 26 automatic digital camera traps on an abandoned railway and a series of tunnels belonging to the former Japanese National Railway was conducted from March 2, 2015 to December 19, 2019 in Kasugai, Aichi Prefecture in Central Japan. A total of 74,807 informative photographs were obtained over 41,052 camera days. Of the 15 mammals that were photo-captured, the most frequently photographed was Sus scrofa (relative abundance index: 15.1 photographs/100 camera-days), followed by Paguma larvata (6.2), Felis catus (5.6), Vulpes vulpes (1.4), Nyctereutes procyonoides (1.2), Lepus brachyurus (0.7), Martes melampus (0.2), Procyon lotor (0.2), Capricornis crispus (0.2), Cervus nippon (0.1), Mustela sp. (0.1), Sciurus lis (< 0.1), Macaca fuscata (< 0.1), Meles anakuma (< 0.1), Myocastor coypus (< 0.1), in order. The study area, which is located in the eastern foothills of Aichi Prefecture, supports populations of local wildlife species that are representative of medium- and large–sized mammals (S. scrofa, V. vulpes, N. procyonoides and L. brachyurus, M. melampus, C. crispus, and C. nippon) and is considered to contribute positively towards the conservation of regional biodiversity. Since the activity of S. scrofa and the administrators of the abandoned railway and tunnels overlap during the twilight hours (i.e., one hour before and after sunrise and sunset), caution is necessary to prevent encounters between S. scrofa and humans.

著者

末次 優花 日置 佳之

出版者

「野生生物と社会」学会

雑誌

野生生物と社会 (ISSN:24240877)

巻号頁・発行日

vol.11, pp.49-63, 2023 (Released:2023-09-01)

参考文献数

39

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Roadkill associated with transportation infrastructure exerts a negative impact on the natural environment and driving; hence, it should be prevented to conserve wildlife and promote safe driving. In this study, drivers in Tottori Prefecture were surveyed regarding their recognition and attitudes toward roadkill. The survey was conducted in September 2020, and online questionnaires were collected from 500 respondents aged 20 to 60. A total of 406 respondents (81.2%) answered that they know what roadkill is and that they had seen it most commonly on roads. More than 90% of those who were aware of roadkill felt that roadkill should not occur, primarily out of sympathy for animals and traffic accident danger. In addition, there was a difference in consciousness depending on the animal species. Roadkill prevention consciousness for large mammals stemmed from a concern to avoid driving dangers, while the reason given for preventing endangered species from becoming roadkill was the need for conservation. Many respondents thought that amphibians, reptiles, and insects are small and collisions are inevitable. Also, more than 80% of respondents thought that roadkill is a problem for both humans and animals. This information on drivers' attitudes toward roadkill prevention in Tottori Prefecture is valuable as a resource for roadkill policies in the future.

著者

斎藤 和範 八谷 和彦

出版者

「野生生物と社会」学会

雑誌

野生生物保護 (ISSN:13418777)

巻号頁・発行日

vol.7, no.2, pp.67-74, 2002-03-29 (Released:2017-10-18)

参考文献数

16

被引用文献数

4

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The Tokyo Daruma Pond Frog (Rana (Rana) porosa porosa) was assumed to have invaded from Honshu into Hokkaido before the 1990's (Saito et al.1998). However, it has become clear that the distribution of this pond frog is even now restricted to a small paddy area around Iwamizawa in central Hokkaido. Population density was high especially at old style paddy fields and shallow earth ditches. The restricted distribution of the pond frog could be related to the following: 1) As a result of field improvement, irrigation and drainage systems were changed from shallow earth brooks and ditches to deep, concrete-sided ones whose walls are too high for pond frogs to jump over; 2) Weeding out of footpaths around paddy fields and canals resulted in a decrease of food insects for the frogs; 3) Improvement of paddy field drainage limited the pond frog habitat after the irrigation season. Fortunately, paddy field improvement is considered an effective barrier of distributional expansion of pond frogs whose habitat was earthen brooks and ditches. It is ironic that the invasive frogs' activity is restricted by unnatural artificial paddy field improvements.

著者

葛西 真輔

出版者

「野生生物と社会」学会

雑誌

ワイルドライフ・フォーラム (ISSN:13418785)

巻号頁・発行日

vol.17, no.1, pp.36-37, 2012-07-31 (Released:2017-11-03)