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O ladrão mascarado: Saí-azul Dacnis cayana (Passeriformes, Thraupidae) rouba material de nidificação de um ninho de Caneleiro-de-chapéu-preto Pachyramphus validus (Passeriformes, Tityridae) no sudeste do Brasil 蒙面小偷:巴西东南部的蓝趾Dacnis cayana(雀形目,Thraupidae)从黑帽鸭Pachyramphus validus(雀形目,Tityridae)的巢穴中窃取筑巢材料
Pub Date : 2023-10-17 DOI: 10.17648/heringeriana.v17i1.918029
Elsie L. Rotenberg, Lucas Botelho, Edelcio Muscat
Este estudo relata o primeiro caso registrado de cleptoparasitismo de ninho na família Thraupidae, envolvendo o saí-azul (Dacnis cayana) e um ninho de caneleiro-de-chapéu-preto (Pachyramphus validus). O cleptoparasitismo é um comportamento no qual um indivíduo rouba comida ou recursos de outro, e o cleptoparasitismo de ninho refere-se especificamente ao roubo de material de nidificação. O saí-azul roubou com sucesso material de nidificação do ninho do caneleiro-de-chapéu-preto sem ser notado. Esse comportamento oferece vantagens como redução do esforço na busca de material e diminuição do risco de predação, mas também traz riscos como a defesa dos donos do ninho e a possibilidade de carregar patógenos. Esta observação expande nossa compreensão dos comportamentos cleptoparasitários nessas espécies de aves.
本研究报告了第一例有记录的Thraupidae盗巢寄生病例,涉及蓝喉鸟(Dacnis cayana)和黑帽鸟(Pachyramphus validus)的巢。盗贼寄生是指一个人从另一个人那里窃取食物或资源的行为,而巢盗贼寄生专门指窃取筑巢材料。蓝鸟成功地从黑帽小鸡的巢中偷走了筑巢材料而没有被注意到。这种行为的好处是减少了寻找材料的努力,降低了被捕食的风险,但也带来了风险,如巢主的防御和携带病原体的可能性。这一观察扩展了我们对这些鸟类盗窃寄生行为的理解。
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引用次数: 0
Synopsis of the genus Mapania (Cyperaceae, Mapanioideae, Hypolytreae) in the Colombian Amazon 哥伦比亚亚马逊河流域的Mapania属(柏科,Mapania总科,Mapania总科)概述
Pub Date : 2023-09-22 DOI: 10.17648/heringeriana.v17i1.918031
Jeffry Atuesta
Mapania is a genus placed in the tribe Hypolytreae, subfamily Mapanioideae of the family Cyperaceae. It includes about 100 species worldwide, widely distributed throughout the tropics. In South America, this genus is represented by 14 species, five of them in Colombia. Its presence in the Colombian Amazon is uncertain due to lack of knowledge of the group and dubious records. The aim of this study is to present a taxonomic synopsis of Mapania for the Colombian Amazon. Specimens from COAH and COL herbaria as well as online databases were revised. Presence of five species is reported: Mapania effusa whose occurrence in Colombia is confirmed, M. pycnocephala and M. pycnostachya new records for the Amazon region, M. maguireana and M. theobromina new records for the Colombian flora. Morphological descriptions, information about the habitat, geographic distribution, notes, and photographs for these species are presented along with a key to identify the Colombian species of this genus.
柏树属是柏科柏树亚科柏树亚科的一个属。它包括全球约100种,广泛分布在热带地区。在南美洲,这个属有14种,其中5种在哥伦比亚。由于缺乏对该组织的了解和可疑的记录,它在哥伦比亚亚马逊地区的存在是不确定的。本研究的目的是为哥伦比亚亚马逊地区的Mapania提供一个分类概要。对COAH和COL植物标本馆的标本以及在线数据库进行了修订。报告了5种:已证实在哥伦比亚有分布的Mapania effusa,亚马逊地区有M. pycecephala和M. pycnostachya新记录,哥伦比亚植物区系有M. magureana和M. theobromina新记录。介绍了这些物种的形态描述、栖息地信息、地理分布、注释和照片,以及识别该属哥伦比亚物种的钥匙。
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引用次数: 0
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Heringeriana
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