圈养繁殖揭示了水生和陆地生殖模式之间的杂交,并在加拉河鲵中逆转了生殖转变

IF 1 4区 生物学 Q3 ZOOLOGY Amphibia-Reptilia Pub Date : 2023-06-07 DOI:10.1163/15685381-bja10143
G. Velo‐Antón, Clara Figueiredo-Vázquez, Lucía Alarcón-Ríos
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引用次数: 0

摘要

双峰生殖物种为研究生殖转变的进化提供了极好的机会,但在脊椎动物中极为罕见。Salamandra Salamandra是两种双峰两栖动物之一,表现出两种胎生模式:水生(幼虫)和陆生(产褥)模式。虽然幼虫和产仔谱系之间的杂交发生在自然接触区,但它们的生殖输出是未知的。本文采用人工圈养繁殖方法,将岛雌和大陆雄进行杂交。我们首先确认了雌性的生殖输出,并通过亲子分析确认了后代的父母,从而得到了一组水生幼虫。我们报告,首次直接证据的F1杂交之间的宇称模式和宇称模式反转的情况下,在个体水平。我们的研究强调salamandra是一种双峰生殖物种,为了解胎生的进化提供了特殊的机会。
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Captive breeding unveils hybridisation between aquatic and terrestrial reproductive modes and a reversal reproductive shift within Salamandra salamandra gallaica
Bimodal reproductive species offer an excellent opportunity to study the evolution of reproductive shifts, yet are extremely rare among vertebrates. Salamandra salamandra is one of two bimodal amphibian species, showing two viviparity modes: an aquatic (larviparity) and a terrestrial (pueriparity) mode. Although hybridization between larviparous and pueriparous lineages occurs in natural contact zones, their reproductive output is unknown. We conducted a captive breeding experiment to cross pueriparous insular females and larviparous continental males of S. s. gallaica. We first confirmed the reproductive output of the females and used parentage analysis to confirm the parents of the offspring, which resulted in a single group of aquatic larvae. We report, for the first time, direct evidence of F1 hybrids between parity modes in urodeles and a case of parity mode reversal at the individual level. Our study highlights S. salamandra as a bimodal reproductive species that offers exceptional opportunities to understand the evolution of viviparity.
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来源期刊
Amphibia-Reptilia
Amphibia-Reptilia 生物-动物学
CiteScore
3.10
自引率
6.20%
发文量
39
审稿时长
6-12 weeks
期刊介绍: Amphibia-Reptilia is a leading European multi-disciplinary journal devoted to most of the aspects of herpetology: ecology, behaviour, evolution, conservation, physiology, morphology, paleontology, genetics, and systematics. Amphibia-Reptilia publishes high quality original papers, short-notes, reviews, book reviews and news of the Societas Europaea Herpetologica (SEH). The Societas Europaea Herpteologica (SEH) website is located at: www.seh-herpetology.org.
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