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| DOI | 10.1016/j.ecss.2024.108629 |
| First insights into the influence of temperature on reproduction in Antarctic fish: The case of Notothenia coriiceps | |
| 发表日期 | 2024 |
| ISSN | 0272-7714 |
| EISSN | 1096-0015 |
| 起始页码 | 297 |
| 卷号 | 297 |
| 英文摘要 | Understanding the reproductive biology of Antarctic notothenioid fish species is crucial for effective management and conservation efforts. This study investigates the reproductive biology of Notothenia coriiceps, focusing on the location of spawning grounds and the influence of environmental factors on this process. Sampling included 120 specimens caught at Potter Cove, South Shetland Islands, from November to late March of years 2016-2018 (austral spring -summer season). Gonadal macroscopic, histologic and physiologic features are reported. Histological analysis revealed two distinct groups of oocytes in the ovaries: a leading clutch of vitellogenic oocytes for the upcoming reproductive event and a second remnant clutch of smaller oocytes in cortical alveoli and primary growth stages. Photoperiod phases significantly associate with variations in the gonadosomatic index throughout ovarian development, indicating the influence of this parameter on fish reproduction at high latitudes. Elevated plasma levels of estradiol during vitellogenesis support its role in stimulating yolk precursor synthesis and incorporation into oocytes. In March, an increase in testosterone levels during late vitellogenesis suggests the proximity of final maturation, ovulation, and spawning. A sharp increase in both sex steroids and accelerated gonadal development of N. coriiceps was particularly evident after water temperature reached maximum values (similar to 2 degrees C), suggesting that high temperature acts as a driver of the physiological mechanisms that allow to complete vitellogenesis and reach the ovulation. Our results show that (1) N. coriiceps females captured in mid-March at Potter Cove were in late developing, suggesting that spawning likely start on April; (2) Potter Cove is likely a spawning ground for N. coriiceps in part due to its thermal regime, emphasizing the importance of inshore areas as spawning grounds for Antarctic notothenioids. Thus, this study underscores the necessity of investigating the impact of water temperature changes on notothenioids reproductive patterns in the context of global warming at West Antarctic Peninsula region. |
| 英文关键词 | Sex steroids; Spawning ground; Reproductive ecology; Potter Cove; South Shetland Islands; Notothenioidei |
| 语种 | 英语 |
| WOS研究方向 | Marine & Freshwater Biology ; Oceanography |
| WOS类目 | Marine & Freshwater Biology ; Oceanography |
| WOS记录号 | WOS:001165133600001 |
| 来源期刊 | ESTUARINE COASTAL AND SHELF SCIENCE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/304252 |
| 作者单位 | Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); National Fisheries Research & Development Institute (INIDEP); Instituto Antartico Argentino; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Museo Argentino de Ciencias Naturales Bernardino Rivadavia (MACN) |
| 推荐引用方式 GB/T 7714 | . First insights into the influence of temperature on reproduction in Antarctic fish: The case of Notothenia coriiceps[J],2024,297. |
| APA | (2024).First insights into the influence of temperature on reproduction in Antarctic fish: The case of Notothenia coriiceps.ESTUARINE COASTAL AND SHELF SCIENCE,297. |
| MLA | "First insights into the influence of temperature on reproduction in Antarctic fish: The case of Notothenia coriiceps".ESTUARINE COASTAL AND SHELF SCIENCE 297(2024). |
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