Elasmobranch species in the artisanal fishery of Sucre State, Venezuela

IF 0.5 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY Ciencias Marinas Pub Date : 2019-12-20 DOI:10.7773/cm.v45i4.3018
R. Márquez, R. Tavares, Luis Ariza
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引用次数: 4

Abstract

espanolEn Venezuela existe una importante diversidad de especies de elasmobranquios. Sin embargo, existe escasa informacion con relacion a estos en la mayor parte de las regiones costeras. Los objetivos del presente estudio fueron determinar la composicion de especies en la captura de la pesca artesanal del estado Sucre, Venezuela, y analizar la estructura de tallas por sexo para las especies mas comunes. Durante el periodo de estudio (enero de 2016–septiembre de 2017) se realizaron visitas a las principales areas de comercializacion de la ciudad de Cumana, estado de Sucre, y se cuantificaron un total de 2,167 elasmobranquios pertenecientes a 24 especies (15 tiburones y 9 rayas). Las especies de elasmobranquios mas frecuentemente capturadas fueron Mustelus higmani (36.2%), Mustelus canis (18.0%), Hypanus guttatus (15.1%) y Hypanus americanus (7.1%). Los intervalos de tallas (longitud total [LT], diametro de disco [DD]) registrados para estas especies fueron 29.3–73.7 cm LT, 34.0–86.0 cm LT, 17.0–138.0 cm DD y 48.0–108.0 cm DD, respectivamente. Segun las evaluaciones de conservacion a nivel nacional (criterios de la Union Internacional para la Conservacion de la Naturaleza), 7 de las especies registradas en el area de estudio ( M. higmani , Carcharhinus limbatus , Carcharhinus falciformis , Isurus oxyrinchus , Alopias superciliosus , Prionace glauca y Aetobatus narinari ) se encuentran en estado vulnerable, mientras que el resto de las especies ( n = 17) no han sido evaluadas. En Venezuela, actualmente, existe una gran deficiencia en materia de conservacion debido al colapso de las instituciones encargadas de la administracion pesquera. Ello conlleva el incumplimiento de las normativas de pesca disenadas para los elasmobranquios. En el futuro se debera hacer un gran esfuerzo para continuar generando informacion; sin embargo , los avances futuros en materia de investigacion cientifica y conservacion dependeran, en gran medida, de la recuperacion de la estabilidad economica y politica del pais. EnglishA wide diversity of elasmobranch species has been reported for waters off Venezuela; however, information regarding this group is lacking for most coastal regions. This study aimed to determine the species composition in catches made by the artisanal fishery of Sucre State, Venezuela, and to analyze size structure by sex for the most common species. During the study period (January 2016–September 2017), visits were made to the main fish markets in the city of Cumana, Sucre State, and a total of 2,167 elasmobranchs belonging to 24 species (15 sharks and 9 rays) were quantified. The most frequently captured elasmobranch species were Mustelus higmani (36.2%), Mustelus canis (18.0%), Hypanus guttatus (15.1%), and Hypanus americanus (7.1%). The size ranges for these species were 29.3–73.7 cm total length (TL), 34.0–86.0 cm TL, 17.0–138.0 cm disc diameter (DD), and 48.0–108.0 cm DD, respectively. Considering national conservation assessments (following International Union for Conservation of Nature criteria), 7 of the species reported for the study area ( M. higmani , Carcharhinus limbatus , Carcharhinus falciformis , Isurus oxyrinchus , Alopias superciliosus , Prionace glauca , and Aetobatus narinari ) are listed as vulnerable, and the remaining species ( n = 17) have not been assessed. Current conservation efforts in Venezuela are deficient given the collapse of government institutions responsible for the management of fisheries. This has led to noncompliance with fishing regulations designed for elasmobranchs. In the future, great effort must be made to continue generating information; however, future advances in scientific research and conservation will depend largely on the recovery of the economic and political stability in Venezuela.
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委内瑞拉苏克雷州个体渔业中的Elasmobranch物种
在委内瑞拉,板鳃动物的种类繁多。然而,在大多数沿海地区,关于这些的信息很少。本研究的目的是确定委内瑞拉苏克雷州手工渔业捕获的物种组成,并分析最常见物种的性别大小结构。学习期间(2016年1月—2017年9月)访问了主要地区comercializacion Cumana,苏克雷市,共量化2,167软骨鱼属于9鲨鱼和鳐24个物种(15)。最常被捕获的板鳃动物种类为海马(36.2%)、犬马(18.0%)、沟马(15.1%)和美洲马(7.1%)。这些物种的大小范围(总长度[LT]、圆盘直径[DD])分别为29.3 - 73.7 cm LT、34.0 - 86.0 cm LT、17.0 - 138.0 cm DD和48.0 - 108.0 cm DD。根据全国基姆(国家标准评估国际联盟基姆性质),包括7种area (m . higmani记录在案,Carcharhinus limbatus, Carcharhinus falciformis, Isurus oxyrinchus, Alopias superciliosus, Prionace glauca和Aetobatus narinari)处于脆弱的条件,而其余的物种(n = 17)是怎么做的?在委内瑞拉,目前由于负责渔业管理的机构的崩溃,在保护方面存在着巨大的缺陷。这违反了为板鳃动物设计的捕鱼条例。今后应作出巨大努力,继续产生资料;然而,未来在科学研究和保护方面的进展将在很大程度上取决于该国恢复经济和政治稳定。据报道,在委内瑞拉以外的水域,板鳃科物种的广泛多样性;= =地理= =根据美国人口普查局的数据,该县总面积为,其中土地和(1.1%)水。本研究的目的是确定委内瑞拉苏克雷州手工渔业捕捞的鱼种组成,并按性别分析最常见鱼种的大小结构。在研究期间(2016年1月至2017年9月),访问了苏克雷州库马纳市的主要鱼类市场,共对24种(15种鲨鱼和9种鳐鱼)的2167种板鳃鱼进行了量化。最常被捕获的elasmobranch物种是Mustelus higmani(36.2%)、Mustelus canis(18.0%)、Hypanus guttatus(15.1%)和Hypanus americanus(7.1%)。这些物种的大小范围分别为29.3 - 73.7 cm (TL)、34.0 - 86.0 cm (TL)、17.0 - 138.0 cm (DD)和48.0 - 108.0 cm (DD)。虽然ngok national conservation评估(International Union for conservation of Nature标准)之后,7年累计for the study area of the species (m . higmani Carcharhinus limbatus, Carcharhinus falciformis, Isurus oxyrinchus, Alopias superciliosus, Prionace glauca, and Aetobatus narinari)列入了一点and the报告species (n = 17)尚未得到评估。由于负责渔业管理的政府机构崩溃,委内瑞拉目前的保护工作不足。这导致不遵守为板鳃鱼设计的捕鱼条例。今后,必须作出巨大努力,继续产生信息;然而,科学研究和保护的未来进展将在很大程度上取决于委内瑞拉经济和政治稳定的恢复。
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来源期刊
Ciencias Marinas
Ciencias Marinas 生物-海洋与淡水生物学
CiteScore
1.10
自引率
0.00%
发文量
9
审稿时长
>12 weeks
期刊介绍: A bilingual open-access publication, Ciencias Marinas (CM) is an international peer-reviewed journal that contains original research findings in all areas of marine science. It is published quarterly by the Autonomous University of Baja California, Mexico, and all its contents are publicly available on our journal website. Though a limited number of copies are still printed, the journal is mainly distributed in its electronic format. CM was conceived in 1973 as part of an academic project aimed to entice local researchers to publicly disclose their findings by adopting the culture of peer-review publishing. This academic project evolved into an international journal after accepting papers from researchers in the United States and, eventually, other parts of the world. Because of the diversity in authorship, CM issues were initially published in either Spanish or English, and occasionally in both languages. It was not until 1984 when CM included both language versions of all its contents, and it then became the fully bilingual journal it still is today. At CM we believe our inclusive format allows us not only to address a wider range of submissions from international authors but also to make published findings available to a wider international audience. So whether you are looking for information on the redfish in Icelandic waters or the physical and biological properties of the Gulf of California, feel free to peruse CM contents. You may find them to provide source material for your research.
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