Age and growth of larval Pacific flagfin mojarra (Eucinostomus currani) in coastal Ecuador based on otolith analysis

IF 0.5 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Ciencias Marinas Pub Date : 2024-03-22 DOI:10.7773/cm.y2024.3448

Michelle Schuiteman, Andre R Dos Santos, Luis E Domínguez-Granda, A. Kinziger, José R. Marín Jarrín

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引用次数: 0

Abstract

The flagfin mojarra (Eucinostomus currani) is an important subsistence fishery resource in local Ecuadorian markets; however, very little is known about the early life history and reproductive biology of this species. In 2016 and 2017, E. currani larvae were collected at 3 sandy beaches in the Gulf of Guayaquil, Ecuador, and identified using DNA barcoding. Standard lengths ranged from 4.00–15.78 mm. We also collected otoliths to better understand the early life history of E. currani. Otoliths were used to estimate the age, population growth rate (±SE), hatch dates, and reproductive period. On average, the fish were 16.5 ± 4.5 days old, while the average growth rate was 0.70 ± 0.05 and 0.22 ± 0.16 mm per day in March and May, respectively. In the Gulf of Guayaquil, most hatch dates and the presumed reproductive activity of E. currani occurred during the wet season (December–April) when warmer water prevailed. To our knowledge, this is the first study to estimate the hatch dates and larval growth rate for a species of the family Gerreidae in the Pacific Ocean.

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根据耳石分析厄瓜多尔沿海太平洋旗鳍鲯鳅（Eucinostomus currani）幼虫的年龄和生长情况

旗鳍鲯鳅（Eucinostomus currani）是厄瓜多尔当地市场上一种重要的生计渔业资源；然而，人们对该物种的早期生活史和繁殖生物学知之甚少。2016 年和 2017 年，我们在厄瓜多尔瓜亚基尔湾的 3 个沙滩上采集了 E. currani 幼虫，并使用 DNA 条形码进行了鉴定。标准长度为 4.00-15.78 毫米。我们还收集了耳石，以更好地了解 E. currani 的早期生活史。耳石用于估计鱼龄、种群增长率（±SE）、孵化日期和繁殖期。鱼龄平均为 16.5 ± 4.5 天，3 月和 5 月的平均生长速度分别为每天 0.70 ± 0.05 毫米和 0.22 ± 0.16 毫米。在瓜亚基尔湾，E. currani 的大多数孵化日期和推测的繁殖活动都发生在水温较高的雨季（12 月至 4 月）。据我们所知，这是首次对太平洋海蛇科物种的孵化日期和幼体生长率进行估计的研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ciencias Marinas 生物-海洋与淡水生物学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： A bilingual open-access publication, Ciencias Marinas (CM) is an international peer-reviewed journal that contains original research findings in all areas of marine science. It is published quarterly by the Autonomous University of Baja California, Mexico, and all its contents are publicly available on our journal website. Though a limited number of copies are still printed, the journal is mainly distributed in its electronic format. CM was conceived in 1973 as part of an academic project aimed to entice local researchers to publicly disclose their findings by adopting the culture of peer-review publishing. This academic project evolved into an international journal after accepting papers from researchers in the United States and, eventually, other parts of the world. Because of the diversity in authorship, CM issues were initially published in either Spanish or English, and occasionally in both languages. It was not until 1984 when CM included both language versions of all its contents, and it then became the fully bilingual journal it still is today. At CM we believe our inclusive format allows us not only to address a wider range of submissions from international authors but also to make published findings available to a wider international audience. So whether you are looking for information on the redfish in Icelandic waters or the physical and biological properties of the Gulf of California, feel free to peruse CM contents. You may find them to provide source material for your research.