Diminutive Freshwater Fish in the Santa CruzRiver System, Laguna, Philippines

IF 0.4 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES

Journal of Environmental Science and Management Pub Date : 2022-06-30 DOI:10.47125/jesam/2022_1/06

Loucel Cui, Rafael Guerrero III, A. De Lara, C. Rebancos, D. Faustino-Eslava

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引用次数: 0

Abstract

Diminutive freshwater fishes are small vertebrate species, maturing at sizes equal or less than 50-100 mm. The distribution and diversity status of these fishes are poorly known because they are difficult to observe in the wild due to their small size and remote location, especially in selected crater lakes, mountain streams, and waterfalls. The study provides baseline data for the diminutive freshwater fishes in the Santa Cruz River System in Laguna, Philippines. The survey was conducted in the upstream, midstream, and downstream for three quarters in 2016-2017. A total of 1,474 individuals belonging to nine families, 12 genera and 15 species were collected. Of the nine families, Gobiidae was the most abundant (47%) followed by Poeciliidae (18%) and Eleotridae (11%). Shannon-Weiner diversity indices ranged from 0.59 to 1.73. Dominance and Evenness ranged from 0.20 -0.75 and 0.23 to 0.99 respectively. The study recommends preventive approaches over restorative actions for the conservation and protection of the diminutive fishery resource.

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菲律宾拉古纳圣克鲁斯河水系中日渐减少的淡水鱼

小型淡水鱼是小型脊椎动物，成熟时大小等于或小于50-100毫米。这些鱼类的分布和多样性状况鲜为人知，因为它们体积小，位置偏远，很难在野外观察到，尤其是在选定的火山口湖、山溪和瀑布中。该研究提供了菲律宾拉古纳圣克鲁斯河水系小型淡水鱼的基线数据。该调查于2016-2017年在上游、中游和下游进行了三个季度。共采集到1474个个体，隶属于9科12属15种。在这九个科中，食蚊科的数量最多（47%），其次是小食蚊科（18%）和Eleotride科（11%）。Shannon Weiner多样性指数在0.59到1.73之间。优势度和均匀度分别为0.20～0.75和0.23～0.99。该研究建议采取预防性方法，而不是恢复性行动，以养护和保护这种小型渔业资源。

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

Journal of Environmental Science and Management ENVIRONMENTAL SCIENCES-

CiteScore

0.90

自引率

0.00%

发文量

审稿时长

2 months

期刊介绍： The Journal of Environmental Science and Management (JESAM) is an international scientific journal produced semi-annually by the University of the Philippines Los Baños (UPLB). JESAM gives particular premium to manuscript submissions that employ integrated methods resulting to analyses that provide new insights in environmental science, particularly in the areas of: environmental planning and management; protected areas development, planning, and management; community-based resources management; environmental chemistry and toxicology; environmental restoration; social theory and environment; and environmental security and management.