2009
DOI: 10.3354/ab00180
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Abstract: During downstream transport from rivers to estuaries, early larval stages of the Amazon River prawn Macrobrachium amazonicum (Heller 1862) are likely exposed to planktonic food limitation. In the laboratory, we studied the effects of presence or absence of food on larval survival, moulting and biomass (dry mass, and content of carbon, hydrogen and nitrogen). Unfed larvae developed successfully from hatching of the Zoea I (Z I) to the third zoeal stage (Z III). Complete absence of starvation effects indicated o… Show more

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Cited by 48 publications
(41 citation statements)
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“…Macrobrachium amazonicum have between 9 and 11 larval stages under laboratorial conditions in which salinity and temperature are kept, respectively, around at 10 and 29°C (Guest and Durocher, 1979;Vega Perez, 1984;Anger and Hayd, 2009). We observed in the present work an abbreviation of the larval stage once almost all zoeae VIII kept on brackish water of 6, 12 or 18 underwent metamorphosis directly to post-larvae.…”
Section: Discussionsupporting
confidence: 62%
“…Macrobrachium amazonicum have between 9 and 11 larval stages under laboratorial conditions in which salinity and temperature are kept, respectively, around at 10 and 29°C (Guest and Durocher, 1979;Vega Perez, 1984;Anger and Hayd, 2009). We observed in the present work an abbreviation of the larval stage once almost all zoeae VIII kept on brackish water of 6, 12 or 18 underwent metamorphosis directly to post-larvae.…”
Section: Discussionsupporting
confidence: 62%
“…Furthermore, Pantanal Zoea I larvae were facultativly lecithotrophic but Zoea III (and beyond) larvae completely planktotrophic. Amazonian estuarine larvae, which require salinity (optimally 10 ppt) to reach and continue into zoeal stages, can survive without food through Zoea III, occasionally molting to Zoea IV after which obligate planktotrophy begins (Anger & Hayd, 2009, 2010. The greater dependence on lecithotrophy in Amazonian larvae is likely an adaptation to the very long drift times in moving river water from upstream hatching sites to coastal estuaries.…”
Section: Transfer Of Larvae From Freshwater To the Seamentioning
confidence: 99%
“…Estos estudios, a nivel experimental y de cultivo, demuestran que su fisiología digestiva se relaciona con la estrategia de alimentación y desarrollo larvario, proporcionando información de base para adecuar los protocolos de alimentación en un cultivo comercial (Jones et al, 1997). Un ejemplo de ello corresponde a estudios realizados en estados tempranos de larvas de crustáceos de agua dulce del género Macrobrachium, en que se ha determinado que los primeros estados de desarrollo larvario, dependen muy poco del alimento externo, completando el estado de zoea 1 con la utilización sólo de las reservas vitelinas, mientras que el estado de zoea 2 presenta un comportamiento lecitotrófico facultativo, siendo completamente planctotróficas sólo en estados más avanzados (Roustain et al, 1999;Pereira & Valenti, 2003;Anger & Hayd, 2009). También, en estudios realizados con larvas de camarones peneidos, se ha observado que las protozoeas muestran mejor respuesta enzimática digestiva cuando se adiciona microalgas en la dieta, mejorando así su crecimiento y supervivencia.…”
Section: Discussionunclassified