Comparison of four methods to estimate meiobenthic copepod Amonardia normani ingestion rates

Souza-Santos, Lília P.; Castel, Jacques

doi:10.1007/s00227-013-2234-4

Mar Biol

2013

DOI: 10.1007/s00227-013-2234-4

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Comparison of four methods to estimate meiobenthic copepod Amonardia normani ingestion rates

Lília P. Souza-Santos

Jacques Castel

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Cited by 3 publications

References 34 publications

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Functional responses of aggregate‐colonizing copepods

Koski

Lombard

2022

Limnology & Oceanography

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Zooplankton consumption of aggregates, such as marine snow, is an important factor in determining the efficiency of the biological carbon pump. However, the feeding rates of aggregate-associated small harpacticoid and poecilostomatoid copepods are largely unknown, as are the factors that influence these rates. We measured the functional responses of pellet production (PP) of aggregate-feeding copepods on appendicularian houses, algal and detrital aggregates, and on Trichodesmium spp. tufts. The PP rates of all copepods increased with increasing aggregate concentrations, but the response varied depending on the aggregate type. The pelagic harpacticoid copepod Microsetella norvegica had the highest PP rates on algal aggregates, while the poecilostomatoid copepod Oncaea spp. and the benthic harpacticoid copepod Amonardia normanni PP rates were highest on appendicularian houses. The ingestion rates of M. norvegica and Oncaea spp. were typically 0.04-0.13 μg C ind. À1 d À1 , with the exception of ca. three times higher rates of Oncaea spp. on appendicularian houses and ca. 10 times higher rates of M. norvegica on algal aggregates. The ingestion rates of the larger species, A. normanni, were generally higher, 0.3-1.3 μg C ind. À1 d À1 on algal aggregates, and even ca. 10-fold higher on appendicularian houses. Our results suggest that the aggregate degradation rates by copepods can vary manyfold depending on the quality (origin) of the aggregate and the copepod species. This can have large consequences for the attenuation of vertical carbon flux.

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Functional responses of aggregate‐colonizing copepods

Koski

Lombard

2022

Limnology & Oceanography

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Molecular quantification of copepod Acartia erythraea feeding on different algae preys

Hu,

Li,

Huang

et al. 2023

Acta Oceanol. Sin.

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On the bioconversion of dietary carotenoids to astaxanthin in the marine copepod, Tigriopus californicus

Weaver

Cobine

Hill

2018

Journal of Plankton Research

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Red carotenoid-based coloration is widely distributed across marine and terrestrial animals and has taken a prominent role in studies of how phenotypic traits evolve in response to natural and sexual selection. Key to these studies is an understanding of the physiological mechanisms that give rise to red coloration, yet an ideal model system for such work has not been identified. The red marine copepod Tigriopus californicus is used as a model system for studies in ecotoxicology, genetics, and physiology, but the mechanisms involved in its bright red coloration have not been well studied. Like nearly all animals that display red carotenoid coloration, T. californicus likely convert yellow carotenoids present in their algal diet to red carotenoids. We conducted precursor/product feeding experiments to demonstrate that T. californicus bioconverts dietary carotenoids to the red carotenoid, astaxanthin. In separate treatment groups, copepods were fed carotenoids that are precursors to specific astaxanthin bioconversion pathways. We .

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Comparison of four methods to estimate meiobenthic copepod Amonardia normani ingestion rates

Cited by 3 publications

References 34 publications

Functional responses of aggregate‐colonizing copepods

Functional responses of aggregate‐colonizing copepods

Molecular quantification of copepod Acartia erythraea feeding on different algae preys

On the bioconversion of dietary carotenoids to astaxanthin in the marine copepod, Tigriopus californicus

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