Costal upwelling and other oceanographic features exert important effects on neritic and benthic communities, causing variations in the reproduction and survival of organisms. Here, we assessed the population structure, sex ratio, recruitment, and reproduction of the caridean shrimp Nematopalaemon schmitti near the Cabo Frio upwelling area in southeastern Brazil. In total, 759 individuals were captured. N. schmitti exhibited a unimodal size–frequency distribution pattern with larger females, and the binomial test indicated a significantly female‐biased sex ratio. The time‐series analysis showed synchrony between ovigerous females and juveniles that revealed continuous reproduction and the possible existence of recruitment areas. Our findings indicate that reproductive parameters are influenced by the environmental factors of the region studied here. We advocate that the influence of the sedimentary composition of the soft bottom and upwelling system of Cabo Frio is the predominant factors influencing the reproductive parameters in N. schmitti.

中文翻译：

---

上升流系统对西大西洋白ide虾对虾Nematopalaemon schmitti（Holthuis，1950）生殖参数评估的影响

沿海上升流和其他海洋学特征对底栖生物和底栖生物群落产生重要影响，导致生物体繁殖和生存的变化。在这里，我们评估了巴西东南部卡波弗里奥上涌区附近的car虾对虾Nematopalaemon schmitti的种群结构，性别比，募集和繁殖。总共捕获了759个人。施密特猪笼草表现出具有更大雌性的单峰大小-频率分布模式，二项式检验表明，女性的性别比明显偏高。时间序列分析显示，雌雄同体的雌雄同体，这表明持续繁殖和可能存在征募地区。我们的发现表明，生殖参数受此处研究区域环境因素的影响。我们认为，Cabo Frio软底和上涌系统的沉积物组成的影响是影响施密猪笼草繁殖参数的主要因素。