Limnetic feeding in eleginops maclovinus (valenciennes, 1830) in the valdivia river, Chile

IF 0.4 4区 综合性期刊 Q4 ECOLOGY Interciencia Pub Date : 2005-03-01 DOI:10.4067/S0717-65382010000100008
H. Pavés, G. Pequeño, C. Bertrán, Luis Vargas
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引用次数: 33

Abstract

Eleginops maclovinus (Valenciennes, 1830) es un pez comun en el litoral, estuarios y tambien rios, preferentemente donde afectan las mareas, del sur de America del Sur, incluyendo las islas Malvinas. Se conoce su alimentacion en los dos primeros habitats, donde consume principalmente animales de ambiente marino y estuarino, donde se alimenta de fauna autoctona (mejillones, crustaceos, poliquetos, etc.). Sin embargo, se desconoce su alimentacion en ambientes limneticos, suponiendose que deberia consumir presas propias de aquellos lugares. En este estudio se analizaron 114 ejemplares de E. maclovinus, de los cuales 98 poseyeron estomagos con contenido. Se ratifico la tendencia zoofagica de la especie, pero tambien se comprobo que en ambientes limneticos consume animales propios de bajas salinidades o salinidades limneticas. El pez se presenta como una especie extraordinariamente versatil en sus capacidades troficas, con una fisiologia que le permite cubrir un amplio abanico ormorregulatorio a nivel digestivo, probablemente uno de las mas variados en el suborden Notothenioidei, de supuesto origen antartico.
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智利瓦尔迪维亚河中马氏线虫(valciennes, 1830)的磁性摄食
在南美洲南部,包括福克兰群岛,它是一种常见的鱼类,分布在海岸、河口和河流,最好是受潮汐影响的地方。众所周知,它在前两个栖息地觅食,主要吃海洋和河口环境的动物,在那里它以本地动物(贻贝、甲壳类、多毛类等)为食。然而,它在淤泥环境中的进食是未知的,假设它应该在这些地方吃自己的猎物。在本研究中,我们分析了114个maclovinus标本,其中98个具有胃内容物。该物种的动物食性倾向得到了证实,但也证明了在淤泥环境中食用低盐度或淤泥盐度的动物。在营养能力方面,鱼是一种非常多才多艺的物种,其生理机能使其在消化水平上覆盖广泛的形态调节范围,可能是Notothenioidei亚目中最多样化的物种之一,假定起源于南极洲。
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来源期刊
Interciencia
Interciencia 综合性期刊-生态学
CiteScore
0.80
自引率
25.00%
发文量
1
审稿时长
4-8 weeks
期刊介绍: Interciencia is the monthly multidisciplinary publication of the INTERCIENCIA Association. It is dedicated to stimulate scientific research, its humanitarian use and the study of its social context, specially in Latin America and the Caribbean and to promote communication between the scientific and technological communities of the Americas. Interciencia has been published uninterruptedly since 1976. Its Founding Director, Marcel Roche (endocrinologist and sociologist of science) was editor until 2008, and thereafter Miguel Laufer (neurobiologist) has been in charge. It has been included since 1978 in the Science Citation Index and other international indexes, and since 2008 it maintains an open access electronic version with material from 2005 onwards. The priority areas of the journal, without exclusion of other areas, are Agronomy, Arid Lands, Food and Nutrition, Biotechnology, Ecology and Environment, Energy, Innovation and Technology Transfer, Marine Resources, Non-renewable Resources, Science Education, Science Policy, Study and Sociology of Science, and Tropical Forests. Interciencia publishes in Spanish, Portuguese and English research and review articles, communications and essays, all of which are subjected to peer review. Additionally, it includes non-refereed sections such as Editorial, Letters to the Editor, Open Town Hall, Book Reviews and Upcoming Events. All the material submitted to the journal for publication and accepted by the Editorial Committee in view of its quality and pertinence is subjected to review by peer specialists in the corresponding fields of knowledge. Neither the INTERCIENCIA Association, nor the journal or the institutions to which the authors belong carry responsibility for the contents. Signing authors are responsible for the material published under their names.
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