Ichthyofauna in an ecological station in the Pantanal of Brazil: the hydrological cycle affecting species composition

資料紀錄

此資源出現紀錄的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。 核心資料表包含 74 筆紀錄。

此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。

版本

以下的表格只顯示可公開存取資源的已發布版本。

如何引用

研究者應依照以下指示引用此資源。:

Pains da Silva, H., Barbosa, A. P. D., Silva, L. N. L., Oliveira Jr, E. S., Corrêa, F., Kantek, D. L. Z., Muniz, C. C., 2020. Ichthyofauna in an ecological station in the Pantanal of Brazil: the hydrological cycle affecting species composition. Museu de Ciències Naturals de Barcelona. Dataset/Occurrence: https://doi.org/10.15470/jjpuuu

權利

研究者應尊重以下權利聲明。:

此資料的發布者及權利單位為 Museu de Ciències Naturals de Barcelona。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF 註冊

此資源已向GBIF註冊，並指定以下之GBIF UUID: 527885fc-bae8-48fd-8e13-349bb6dae9b8。  Museu de Ciències Naturals de Barcelona 發佈此資源，並經由GBIF Spain同意向GBIF註冊成為資料發佈者。

關鍵字

Diversity; Ichthyofauna; Wetland; Conservation Unit; Occurrence; Occurrence

聯絡資訊

地理涵蓋範圍

The Taiamã Ecological Station (TES) is located in the Pantanal of Mato Grosso (between W 57o 24' and W 45° 40'; and S 16° 48' and S 16° 58'; fig. 1), 165 km t from the municipality of Cáceres. The TES covers an area of 11,550 ha, comprising the islands of Taiamã and Sararé, and limited by a bifurcation of the Paraguay River

分類群涵蓋範圍

無相關描述

時間涵蓋範圍

計畫資料

The Pantanal is an extensive plain composed of a series of periodically flooded landscape units (Pozer and Nogueira, 2004), and covering a range of approximately 140,000 km² in the Midwest of Brazil (Da Silva et al., 2001; Lourenço et al., 2008). Within this area, 11,555 ha belong to the Taiamã Ecological Station (TES), delimited by the Paraguay River and containing a variety of aquatic environments. Southwest of the TES is a flood region named Campo. This region is a Conservation Unit and one of the most flooded areas of the Pantanal (Pereira et al., 2012; Castrillon et al., 2011). Fishery activity is now prohibited here (Resolução CEPESCA 02/2018) due to the region´s importance for ichthyofauna as an area for breeding, growth and feeding, and consequent high relevance for the conservation and maintenance of species. It is therefore important to determine the ichthyofauna present in the Conservation Unit in order to create a database of species that have a high probability of occurrence in the Northern Pantanal. Each week, hundreds of tourists explore the abundance of high commercial value fish in the regions near the Conservation Unit from the boat hotels and professional fishermen. Exploration of these resources has a strong impact on fisheries in the region, emphasizing the importance of determining the local biodiversity and aspects related to conservation. Besides the fish of high commercial value, such as Piaractus mesopotamicus (Holmberg, 1887), other smaller, less known species are also found in high abundance, such as Astyanax lacustris (Lütken, 1875). This species is commonly found below the macrophyte beds as a result of the production of detritus and shelter availability (Schiesari et al., 2003), and it is the base of the food chain of many species. The importance of maintaining the base of the food chain reflects the maintenance of larger species (Layman et al., 2015), consequently affecting the ecological process of an environment (Sanders et al., 2014). However, to understand the food chain and the ecological processes, studies comprising checklists are needed to provide information about the species composition and create a robust database that will aid management and conservation of aquatic ecosystems (Corrêa et al., 2015). Studies addressing lists of fish species in the Pantanal are scarce. We highlight the work of Súarez and Petrere (2007); Pains-Silva et al. (2010); Fernandes et al. (2015) in a system of bays connected to the Paraguay River – MT; Teresa et al. (2010) in the drainage system of the Miranda and Aquidauana rivers – MS; Súarez et al. (2013) in Porto Murtinho - MS; and Severo-Neto et al. (2015) in Medal Bay – MS. However, only one work has been conducted in protected areas, that is, the study by Polaz et al. (2014) who conducted research in the Pantanal National Park – MT. This current research describes the fish species in the Taiamã Ecological Station, in the Pantanal of Cáceres, Mato Grosso, Brazil. Furthermore, it provides an accretion of data that fills a gap about the ichthyofauna composition in the northern Pantanal, mainly referring to seasonal hydric variation.

參與計畫的人員:

取樣方法

We conducted three field excursions, in September 2014, February 2015, and May 2015. These three periods comprise the seasonal hydric periods of low waters (drought), decreasing waters (ebbing), and high waters (flooding). The study was approved by the Instituto Chico Mendes para a conservação da Biodiversidade–SISBIO num 46263-1).

方法步驟描述:

1. Fish samples were collected at three different points surrounding the TES. Fish capture were captured using a square metallic structure (1 m width x 2 m length x 1 m depth) with a 3 mm nylon net that was passed underneath the macrophyte beds three times. Netting of several mesh sizes and a dragging net (5 mm internode, 25 m length and 4 m high) were also passed once in the limnetic region of the water body. After the samples were collected, the fish were anesthetized with Eugenol (Keene et al., 1998; Fernandes et al., 2017) and fixed in formalin (concentration of 10 %) until identification.

引用文獻

1. Pains da Silva, H., Barbosa, A. P. D., Silva, L. N. L., Oliveira Jr, E. S., Corrêa, F., Kantek, D. L. Z., Muniz, C. C., 2020. Ichthyofauna in an ecological station in the Pantanal of Brazil: the hydrological cycle affecting species composition. Arxius de Miscel·lània Zoològica, 18: 183-193, Doi: https://doi.org/10.32800/amz.2020.18.0183 https://doi.org/10.32800/amz.2020.18.0183

額外的詮釋資料