Data/hora: 13/06/2024 18:34:25

Provedor de dados: | 20
País: | Belgium

Título:

Estimación de tasas de ingestión de Mnemiopsis leidyi (Ctenophora: Lobata) en condiciones de laboratorio

Estimate of intake rates of Mnemiopsis leidyi (Ctenophora: Lobata) under laboratory conditions

Autores: | Bertelo, M.I.; Giberto, D.A.; Schiariti, A.; Bianca, F.; Suárez, J.; Mianzan, H.W.
Data: | 2014-06-09
Ano: | 2013
Palavras-chave: | Artificial feeding; Recruitment; Fish eggs; Controlled conditions; Zooplankton.
Resumo: | The first results in the development of a standardized methodology to estimate Mnemiopsis leidyi intake rates and their impact on fish recruitment are presented. M. leidyi capability to consume lyophilized fish eggs and level of consumption of such type of preys, Artemia nauplii and rotifera were assessed. Although M. leidyi can consume lyophilized fish eggs, intake rates were extremely low, often null and in all cases lower than those estimated for the other types of preys offered. The increase of feeding rate on each prey was proportional to ctenophores size growth. The results observed suggest that consumption of fish eggs would not affect recruitment. However, there is not a uniform methodology in the literature that allows for standardized comparisons. The results obtained underline the need to define a standard methodology to address M. leidyi feeding pattern and its potential effect on fish recruitment. The development of a standard prey type to allow for comparative studies will represent a step forward in that sense. To that end, it will be necessary to repeat the experiments presented here using live as well as lyophilized eggs.
Tipo: | Journal Contribution
Idioma: | Espanhol

Identificador:

Revista de Investigación y Desarrollo Pesquero, 22, p. 5-14

0325-6375

http://hdl.handle.net/1834/5485

Fonte: | http://creativecommons.org/licenses/by-nc/3.0/