First observations on reproductive characteristics on Chilean Patagonian populations inland water Calanoids Copepods
First observations on reproductive characteristics on Chilean Patagonian populations inland water Calanoids Copepods
Authors
De Los Ríos Escalante, Patricio
Carreño Abarzúa, Eriko
Carreño Abarzúa, Eriko
Authors
Date
2014-09-07
Datos de publicación:
http://dx.doi.org/10.4067/S0717-65382012000200005
Keywords
Copépodos - Zooplankton - Lagos Patagónicos
Collections
Abstract
Los copépodos calanoideos son abundantes en los ensambles zooplanctónicos de aguas continentales de la Patagonia, y en este contexto, se analizaron parámetros de fertilidad en cuatro especies de calanoideos representativos de aguas continentales de la Patagonia (37°-52° S) con el objetivo de determinar los parámetros de fertilidad en poblaciones de copépodos representativas de la Patagonia chilena. Para este propósito se consideraron dos a cuatro poblaciones de las siguientes especies: Boeckella gracilipes, B. michaelseni, B. poppei, y Tumeodiaptomus diabolicus, se consideraron individuos hembras con huevos a las que se midió el largo total, número de huevos y la razón entre número de huevos con el largo total. Los resultados mostraron que a nivel de especies B. poppei fueron significativamente diferentes para las otras tres especies. A nivel de poblaciones, se encontraron diferencias a nivel de poblaciones en algunas especies. Los resultados que los parámetros reproductivos variaron en función de los parámetros ambientales variaron en función de las condiciones ambientales de las poblaciones y estaría asociado con las condiciones ecológicas tales como estructuras poblacionales y las propiedades de las comunidades zooplanctónicas.
The calanoids copepods are abundant in zooplankton assemblages in Patagonian inland waters, and within context the aim of determine the fertility parameters on populations of copepods representative of different inland water of Chilean Patagonia (37°-52° S). For this purpose, it was considered two to four populations of the the following species: Boeckella gracilipes, B. michaelseni, B. poppei, and Tumeodiaptomus diabolicus, it was considered for female individuals the total length, eggs number, and ratio between total length. The results revealed at species level that B. poppei was significantly different in comparison to another species in all of the three species. At populations level it was found differences in three species considered. The results revealed that the reproductive parameters are variable in function of the environmental conditions of the populations. The results denoted that the reproductive parameters are markedly influenced by environmental conditions, and it would be associated with ecological consequences such as populational structures and properties of zooplankton community ecology.
The calanoids copepods are abundant in zooplankton assemblages in Patagonian inland waters, and within context the aim of determine the fertility parameters on populations of copepods representative of different inland water of Chilean Patagonia (37°-52° S). For this purpose, it was considered two to four populations of the the following species: Boeckella gracilipes, B. michaelseni, B. poppei, and Tumeodiaptomus diabolicus, it was considered for female individuals the total length, eggs number, and ratio between total length. The results revealed at species level that B. poppei was significantly different in comparison to another species in all of the three species. At populations level it was found differences in three species considered. The results revealed that the reproductive parameters are variable in function of the environmental conditions of the populations. The results denoted that the reproductive parameters are markedly influenced by environmental conditions, and it would be associated with ecological consequences such as populational structures and properties of zooplankton community ecology.