Effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton

Abstract Copepod reproductive success largely depends on food quality, which also reflects the prey trophic mode. As such, modelling simulations postulate a trophic enhancement to higher trophic levels when mixotrophy is accounted in planktonic trophodynamics. Here, we tested whether photo-phagotrop...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Claudia Traboni, Albert Calbet, Enric Saiz
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d35ddb9b679347d0b426ecb5670b46a7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d35ddb9b679347d0b426ecb5670b46a7
record_format	dspace
spelling	oai:doaj.org-article:d35ddb9b679347d0b426ecb5670b46a72021-12-02T16:26:37ZEffects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton10.1038/s41598-020-69174-w2045-2322https://doaj.org/article/d35ddb9b679347d0b426ecb5670b46a72020-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-69174-whttps://doaj.org/toc/2045-2322Abstract Copepod reproductive success largely depends on food quality, which also reflects the prey trophic mode. As such, modelling simulations postulate a trophic enhancement to higher trophic levels when mixotrophy is accounted in planktonic trophodynamics. Here, we tested whether photo-phagotrophic protists (mixoplankton) could enhance copepod gross-growth efficiency by nutrient upgrading mechanisms compared to obligate autotrophs and heterotrophs. To validate the hypothesis, we compared physiological rates of the copepod Paracartia grani under the three functional nutrition types. Ingestion and egg production rates varied depending on prey size and species, regardless of the diet. The gross-growth efficiency was variable and not significantly different across nutritional treatments, ranging from 3 to 25% in the mixoplanktonic diet compared to autotrophic (11–36%) and heterotrophic (8–38%) nutrition. Egg hatching and egestion rates were generally unaffected by diet. Overall, P. grani physiological rates did not differ under the tested nutrition types due to the large species-specific variation within trophic mode. However, when we focused on a single species, Karlodinium veneficum, tested as prey under contrasting trophic modes, the actively feeding dinoflagellate boosted the egestion rate and decreased the copepod gross-growth efficiency compared to the autotrophic ones, suggesting possible involvement of toxins in modulating trophodynamics other than stoichiometric constraints.Claudia TraboniAlbert CalbetEnric SaizNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-14 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Claudia Traboni Albert Calbet Enric Saiz Effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton
description	Abstract Copepod reproductive success largely depends on food quality, which also reflects the prey trophic mode. As such, modelling simulations postulate a trophic enhancement to higher trophic levels when mixotrophy is accounted in planktonic trophodynamics. Here, we tested whether photo-phagotrophic protists (mixoplankton) could enhance copepod gross-growth efficiency by nutrient upgrading mechanisms compared to obligate autotrophs and heterotrophs. To validate the hypothesis, we compared physiological rates of the copepod Paracartia grani under the three functional nutrition types. Ingestion and egg production rates varied depending on prey size and species, regardless of the diet. The gross-growth efficiency was variable and not significantly different across nutritional treatments, ranging from 3 to 25% in the mixoplanktonic diet compared to autotrophic (11–36%) and heterotrophic (8–38%) nutrition. Egg hatching and egestion rates were generally unaffected by diet. Overall, P. grani physiological rates did not differ under the tested nutrition types due to the large species-specific variation within trophic mode. However, when we focused on a single species, Karlodinium veneficum, tested as prey under contrasting trophic modes, the actively feeding dinoflagellate boosted the egestion rate and decreased the copepod gross-growth efficiency compared to the autotrophic ones, suggesting possible involvement of toxins in modulating trophodynamics other than stoichiometric constraints.
format	article
author	Claudia Traboni Albert Calbet Enric Saiz
author_facet	Claudia Traboni Albert Calbet Enric Saiz
author_sort	Claudia Traboni
title	Effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton
title_short	Effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton
title_full	Effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton
title_fullStr	Effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton
title_full_unstemmed	Effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton
title_sort	effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/d35ddb9b679347d0b426ecb5670b46a7
work_keys_str_mv	AT claudiatraboni effectsofpreytrophicmodeonthegrossgrowthefficiencyofmarinecopepodsthecaseofmixoplankton AT albertcalbet effectsofpreytrophicmodeonthegrossgrowthefficiencyofmarinecopepodsthecaseofmixoplankton AT enricsaiz effectsofpreytrophicmodeonthegrossgrowthefficiencyofmarinecopepodsthecaseofmixoplankton
_version_	1718384018880200704

Effects of prey trophic mode on the gross-growth efficiency of marine copepods: the case of mixoplankton

Ejemplares similares