海牛(海牛和儒艮)生殖内分泌学。

IF 2.1 3区 医学 Q3 ENDOCRINOLOGY & METABOLISM General and comparative endocrinology Pub Date : 2024-06-20 DOI:10.1016/j.ygcen.2024.114575
Elizabeth Brammer-Robbins , Jonathan R. Cowart , Monica Calderon , Elizabeth A. Burgess , Iskande V. Larkin , Christopher J. Martyniuk
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引用次数: 0

摘要

生殖激素对哺乳动物的交配系统、行为、生育能力、妊娠、分娩和哺乳至关重要,了解激素在这些过程中的作用对物种保护至关重要。海牛是一种独特的海洋哺乳动物,包括海牛、儒艮和已经灭绝的斯特勒海牛。由于栖息地丧失、寒冷压力、船只撞击创伤、有害藻华毒性、缠绕和非法捕猎等原因,现存的海牛物种都被列为易危物种。因此,成功的繁殖对维持和增加海马的数量至关重要。了解海马的繁殖行为、内分泌学和交配策略将有助于保护和管理工作,为成功繁殖提供适当的条件。本综述的目的是综合目前有关海马类动物生殖周期和内分泌学的知识,并确定未来调查的知识差距。目前有关海马生殖生理的文献报道了生殖季节性、性成熟、发情周期和非周期性、妊娠和性别差异。然而,在促性腺激素的周期性和脉冲式释放、雌性的成熟以及整个妊娠期的妊娠激素特征方面,仍然存在很大的知识差距。迄今为止,尚无法解释卵巢非周期性的模式,也不了解海牛体内大量附属黄体的功能。对更多野生海牛种群进行纵向和死后研究是重要的第一步。总之,了解这些脆弱和濒危物种的生殖内分泌学对政策和管理决策至关重要,以便更好地为保护措施提供信息。
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Sirenian (manatees and dugongs) reproductive endocrinology

Reproductive hormones are essential to mating systems, behavior, fertility, gestation, parturition, and lactation in mammals and understanding the role of hormones in these processes is essential for species conservation. Sirenia is a unique order of marine mammals that include manatees, dugongs, and the extinct Steller’s sea cow. Extant Sirenian species are all listed as vulnerable due to habitat loss, cold stress, boat strike trauma, harmful algal bloom toxicity, entanglements, and illegal hunting. Therefore, successful reproduction is essential to maintaining and increasing Sirenian populations. Understanding Sirenian reproductive behavior, endocrinology, and mating strategies will aid conservation and management efforts to protect and provide the proper conditions for successful reproduction. The objectives of this review were to synthesize the current knowledge regarding reproductive cycles and endocrinology of Sirenians and identify knowledge gaps for future investigation. The current literature on Sirenian reproductive physiology reports reproductive seasonality, sexual maturation, estrous cyclicity and acyclicity, pregnancy, and sex differences. However, there remain significant knowledge gaps on the cyclicity and pulsatile release of gonadotropins, maturation in females, and characterization of pregnancy hormone profiles throughout gestation. To date, there is no explanation for confirmed pattern for ovarian acyclicity, nor understanding of the function of the numerous accessory corpus luteum described in manatees. Research including a greater number of longitudinal and postmortem studies on a wider variety of wild manatee populations are important first steps. Taken together, understanding the reproductive endocrinology of these vulnerable and threatened species is critical for policy and management decisions to better inform protection initiatives.

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来源期刊
General and comparative endocrinology
General and comparative endocrinology 医学-内分泌学与代谢
CiteScore
5.60
自引率
7.40%
发文量
120
审稿时长
2 months
期刊介绍: General and Comparative Endocrinology publishes articles concerned with the many complexities of vertebrate and invertebrate endocrine systems at the sub-molecular, molecular, cellular and organismal levels of analysis.
期刊最新文献
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