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Mating strategies in two species of monogamously breeding colonial birds in captivity.

机译：在圈养中一夫一妻地繁殖的两种鸟类的交配策略。

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摘要

Relatedness information is important in understanding and predicting social interactions and is essential in managing breeding programs. In captivity, insights from behavioral and genetic research guide managers in providing animals with the best experience possible. I studied behavioral and genetic aspects of reproduction in two captive colonies of ibis (Waldrapp Ibis, Geronticus eremita, and Scarlet Ibis, Eudocimus ruber). I addressed two questions about their mating strategies: (1) Do extra-pair copulations (EPCs) occur in captive colonies, and if so, can they be predicted? In the Scarlet This colony, EPCs did occur, but males guarded their mates from extra-pair fertilization. Unpaired females engaged in EPCs, but they did not reproduce. Scarlet This copulations, during four breeding seasons, increased starting in early April through mid-June and decreased from the mid-June through early August, coinciding with two peaks of nesting behavior. In general, copulation was low, with only 362 pair copulations and 175 EPCs during 800 hours of colony observation. EPCs peaked during egg laying and incubation. Despite a rate of 0.5 EPCs per pair copulation, DNA profiles indicate no extra-pair offspring resulted. (2) Does mate fidelity or nest site fidelity play a more important role in reproduction success? Results from 13 years of breeding data indicated that Waldrapp Ibis rarely switched mates without switching nests as well; birds switched mates on average every two years. Males had significantly higher reproductive success if they remained with their mate and at the same nest. Females had no significant reproductive success effect from switching mates or nest site.;Genetic diversity is important in maintaining healthy breeding populations, but genetic identity of founders is rarely known. I used band sharing data from DNA fingerprints and traditional pedigrees to examine genetic similarity of birds known to be related and birds known to be unrelated, e.g. acquired from different source populations. For both ibis species, presumed related birds had significant band sharing values; band sharing values for birds from the same source populations were not significant. Exhibit design, genetic composition, and individual mating behavior all impact the dynamics of monogamous, colonial-nesting ibis in captivity.
机译：关联性信息对于理解和预测社会互动非常重要，对于管理育种计划也至关重要。在圈养中，来自行为和遗传研究的见识可指导管理人员为动物提供最佳体验。我研究了两个宜必思殖民地（Waldrapp Ibis，Geronticus eremita和Scarlet Ibis，Eudocimus ruber）的繁殖行为和遗传方面。我针对它们的交配策略回答了两个问题：（1）圈养菌落中是否存在超配对交配（EPC），如果是，可以预测它们吗？在猩红色的这个殖民地，确实发生了EPC，但雄性保护其配偶免受超配对受精。未成对的雌性从事EPC，但没有繁殖。猩红的交配在四个繁殖季节中，从4月初到6月中旬开始增加，从6月中旬到8月初减少，与两个筑巢行为高峰相吻合。通常，交配率很低，在800个小时的菌落观察中只有362对交配和175个EPC。 EPC在产卵和孵化期间达到顶峰。尽管每对交配的EPC比率为0.5，但DNA谱图表明未产生超对后代。 （2）交配保真度或巢位保真度在繁殖成功中起更重要的作用吗？ 13年繁殖数据的结果表明，Waldrapp Ibis很少在不切换巢的情况下切换伴侣。鸟类平均每两年更换一次伴侣。如果雄性与伴侣同窝，则它们的生殖成功率将大大提高。雌性没有因交配或筑巢而产生明显的生殖成功效果。；遗传多样性对于维持健康的繁殖种群很重要，但创始人的遗传特性却鲜为人知。我使用了来自DNA指纹和传统谱系的波段共享数据来检查已知有亲缘关系的鸟类和已知无缘关系的鸟类（例如从不同的来源人群获得。对于这两种宜必思物种，假定的相关鸟类具有明显的谱带共享值；来自相同来源种群的鸟类的波段共享值并不显着。展品的设计，遗传组成和个体交配行为都会影响一夫一妻制，殖民地嵌套的宜必思人工饲养的动态。

著录项

  • 作者

    Elbin, Susan Baumgartner.;

  • 作者单位

    Rutgers The State University of New Jersey - New Brunswick.;

  • 授予单位 Rutgers The State University of New Jersey - New Brunswick.;
  • 学科 Ecology.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 184 p.
  • 总页数 184
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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