Life History Traits of the Snapping Shrimp Alpheus carlae (Decapoda: Alpheidae) from the South-eastern Coast of Brazil.

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-10-29 eCollection Date: 2021-01-01 DOI:10.6620/ZS.2021.60-62

Bianca Ghizelli-Fraga, Rogerio C Costa, Régis A Pescinelli

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Abstract

The life history traits of the snapping shrimp Alpheus carlae were investigated. We evaluated the relative growth, morphological sexual maturity, sexual dimorphism, handedness, fecundity, and egg volume. Sampling was performed monthly in an estuarine region of Cananéia, in the south-eastern coast of Brazil. The following structures were measured to perform the relative growth analysis: length of carapace and second pleonal pleuron, length, width and height of major cheliped propodus, and length of appendix interna and appendix masculina. Juveniles and adults males and females have different growth patterns, indicating distinct strategies of energy allocation. The estimated carapace length at the onset of morphological sexual maturity of females and males was 5.6 mm and 6.2 mm, respectively. The sexual dimorphism of specific body structures was evident, mainly in the appendix interna of females and major cheliped of males. There was no evidence of handedness in females or males. The mean fecundity of females was 364 ± 204 eggs (mean ± SD) eggs and was positively correlated with the carapace length. The egg volume differed between developmental stages I and II, and I and III, with an overall volume increase of 73.23% and 95.45%, respectively. The results contribute to the knowledge about A. carlae and its life history in natural environment.

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巴西东南海岸鳄虾 Alpheus carlae（十足目：Alpheidae）的生活史特征。

我们研究了卡氏鳄的生活史特征。我们评估了相对生长、形态性成熟、性双态性、手性、繁殖力和卵量。我们每月在巴西东南海岸卡纳内亚河口地区取样。为进行相对生长分析，对以下结构进行了测量：躯干和第二胸膜的长度，主要螯足的长度、宽度和高度，盲肠内侧和盲肠外侧的长度。雌雄幼体和成体具有不同的生长模式，表明它们采取了不同的能量分配策略。雌性和雄性形态性成熟时的估计体长分别为 5.6 毫米和 6.2 毫米。特定身体结构的性二态特征明显，主要表现在雌性的腹内盲肠和雄性的主要螯足。雌性和雄性都没有手性的迹象。雌性的平均繁殖力为 364 ± 204 个卵（平均 ± 标差），与躯干长度呈正相关。卵体积在发育阶段 I 和 II、I 和 III 之间存在差异，总体体积分别增加了 73.23% 和 95.45%。这些结果有助于了解胭脂鱼及其在自然环境中的生活史。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.