{"title":"挪威大鼠,褐家鼠(Berkenhout)的岛屿种群,用雌激素类固醇治疗的生殖","authors":"A.B. Lazarus, F.P. Rowe","doi":"10.1016/0304-3746(82)90015-4","DOIUrl":null,"url":null,"abstract":"<div><p>A population of Norway rats, <em>Rattus norvegicus</em> (Berkenhout), living on a small island was sampled on four occasions in 1974. Breeding began in the spring and ceased in late autumn. Sub-adult rats (< 150 g) were absent in March but they comprised 45.5% of the sample taken in June; they were even more numerous in September (65.9%) but their numbers were declining by December (36.9%). Pregnant and lactating females were trapped in June and September only.</p><p>The population was treated with a synthetic oestrogen reproduction inhibitor for 1 week in March 1975. The compound, the 3-cyclopentyl ether of 17α-hexa-1′3′-diynyloestra-1,3,5(10)-trien-17β-ol (BDH 10131), was included at 0.05% in oatmeal bait.</p><p>Further samples of rats were taken after the treatment, in April, July and September 1975 and in January 1976. Fertility was found to have been impaired; no sub-adult animals were caught and no actively breeding females were found. The capture of fewer individuals at post-treatment (29) than at pre-treatment (143) was a further indication that rat numbers remained low following the treatment.</p><p>In May 1976, 14 months after the BDH 10131 treatment, both sub-adult and pregnant animals were again present, providing evidence of renewed breeding and of population growth.</p></div>","PeriodicalId":100066,"journal":{"name":"Agro-Ecosystems","volume":"8 1","pages":"Pages 59-67"},"PeriodicalIF":0.0000,"publicationDate":"1982-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0304-3746(82)90015-4","citationCount":"4","resultStr":"{\"title\":\"Reproduction in an island population of Norway rats, Rattus norvegicus (Berkenhout), treated with an oestrogenic steroid\",\"authors\":\"A.B. Lazarus, F.P. Rowe\",\"doi\":\"10.1016/0304-3746(82)90015-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A population of Norway rats, <em>Rattus norvegicus</em> (Berkenhout), living on a small island was sampled on four occasions in 1974. Breeding began in the spring and ceased in late autumn. Sub-adult rats (< 150 g) were absent in March but they comprised 45.5% of the sample taken in June; they were even more numerous in September (65.9%) but their numbers were declining by December (36.9%). Pregnant and lactating females were trapped in June and September only.</p><p>The population was treated with a synthetic oestrogen reproduction inhibitor for 1 week in March 1975. The compound, the 3-cyclopentyl ether of 17α-hexa-1′3′-diynyloestra-1,3,5(10)-trien-17β-ol (BDH 10131), was included at 0.05% in oatmeal bait.</p><p>Further samples of rats were taken after the treatment, in April, July and September 1975 and in January 1976. Fertility was found to have been impaired; no sub-adult animals were caught and no actively breeding females were found. The capture of fewer individuals at post-treatment (29) than at pre-treatment (143) was a further indication that rat numbers remained low following the treatment.</p><p>In May 1976, 14 months after the BDH 10131 treatment, both sub-adult and pregnant animals were again present, providing evidence of renewed breeding and of population growth.</p></div>\",\"PeriodicalId\":100066,\"journal\":{\"name\":\"Agro-Ecosystems\",\"volume\":\"8 1\",\"pages\":\"Pages 59-67\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1982-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0304-3746(82)90015-4\",\"citationCount\":\"4\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Agro-Ecosystems\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0304374682900154\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agro-Ecosystems","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0304374682900154","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Reproduction in an island population of Norway rats, Rattus norvegicus (Berkenhout), treated with an oestrogenic steroid
A population of Norway rats, Rattus norvegicus (Berkenhout), living on a small island was sampled on four occasions in 1974. Breeding began in the spring and ceased in late autumn. Sub-adult rats (< 150 g) were absent in March but they comprised 45.5% of the sample taken in June; they were even more numerous in September (65.9%) but their numbers were declining by December (36.9%). Pregnant and lactating females were trapped in June and September only.
The population was treated with a synthetic oestrogen reproduction inhibitor for 1 week in March 1975. The compound, the 3-cyclopentyl ether of 17α-hexa-1′3′-diynyloestra-1,3,5(10)-trien-17β-ol (BDH 10131), was included at 0.05% in oatmeal bait.
Further samples of rats were taken after the treatment, in April, July and September 1975 and in January 1976. Fertility was found to have been impaired; no sub-adult animals were caught and no actively breeding females were found. The capture of fewer individuals at post-treatment (29) than at pre-treatment (143) was a further indication that rat numbers remained low following the treatment.
In May 1976, 14 months after the BDH 10131 treatment, both sub-adult and pregnant animals were again present, providing evidence of renewed breeding and of population growth.