Euphausiids of central zone of Chile, Juan Fernández Archipelago and Desventuradas Islands

Armando Mujica, Constanza Pavez


DOI: https://doi.org/10.3856/vol36-issue2-fulltext-10

The species composition, geographical distribution and abundance of the euphausiids, captured in 64 sampling stations between Valparaiso (33º0’S, 71º40’W), Juan Fernández Archipelago (33º37’S, 68º49’W) and Desventuradas Islands (26º20’S, 80º00W) between September and October 2000, were described. Between euphausiids adults, a total of 22 species belonging to six genera were identified (Euphausia, Nematobrachion, Nematoscelis, Stylocheiron, Thysanoessa and Thysanopoda). The higher abundance was found near Valparaiso (6,238 ind 1000 m-3), only integrated by Euphausia mucronata (62,3%). The captures were influenced by the diel vertical migration, which generated a horizontal discontinuity in the distribution of most of the euphausiids, due to the sampling depth (0-200 m). An inverse correlation was established between the abundance of E. mucronata and Nematoscelis megalops and the dissolved oxygen concentration.

Mujica A, Pavez C. Euphausiids of central zone of Chile, Juan Fernández Archipelago and Desventuradas Islands. Lat. Am. J. Aquat. Res.. 2008;36(2): 283-300. Available from: https://lajar.cl/index.php/rlajar/article/view/vol36-issue2-fulltext-10 [Accessed 3 Dec. 2024].
Mujica, A., & Pavez, C. (2008). Euphausiids of central zone of Chile, Juan Fernández Archipelago and Desventuradas Islands. Latin American Journal of Aquatic Research, 36(2), 283-300. Retrieved from: https://lajar.cl/index.php/rlajar/article/view/vol36-issue2-fulltext-10 3 Dec. 2024