Temperature driven changes in the diet preference of omnivorous copepods: no more meat when it's hot?

Boersma, Maarten; Mathew, K. Avarachen; Niehoff, Barbara; Schoo, Katherina L.; Franco-Santos, Rita Melo; Meunier, Cédric L.

doi:10.1111/ele.12541

Cited by 93 publications

(120 citation statements)

References 49 publications

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“…We tested consumption rates and diet selection at three temperatures (15-25°C) which may be a relatively narrow range of temperatures compared to temperatures naturally experienced by aquatic snails. However, our chosen testing temperatures lie well within the range of those of other experimental studies revealing a diet switch from animal prey to plant food in aquatic ectotherms, for instance a marine fish tested at 12-27°C (Behrens & Lafferty, 2007) and copepods tested at 10-24°C (Boersma et al, 2016). In both studies, the observed diet switch was also visible within the 15-25°C temperature range.…”

Section: Discussionmentioning

confidence: 53%

“…One potential strategy to reduce the mismatch is to consume a diet with more carbohydrates which can be easily utilized for energy (Lee et al, 2015). This would imply selection for a more carbon-based diet with increasing temperatures and, hence, more plants and less meat for omnivorous ectotherms (Boersma et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…An increasing strength of plantherbivore interactions has been found to coincide with rising temperatures (Barton et al, 2009;O'Connor, 2009;Shurin et al, 2012). Compared to the amount of studies currently investigating the effects of global warming on trophic interactions, there seems to be only relatively few studies investigating the role of omnivores in this situation (e.g., Boersma et al (2016)). Our study indicates with increasing temperatures more plant consumption is expected by ectotherm omnivores due to increased consumption rates, not increased plant preference.…”

Section: Discussionmentioning

confidence: 99%

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The effect of temperature on herbivory by the omnivorous ectotherm snail Lymnaea stagnalis

et al. 2016

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Rising temperatures likely affect the trophic interactions in temperate regions as global warming progresses. An open question is how a temperature rise may affect consumer pressure and plant abundance in shallow aquatic ecosystems, where most consumers are omnivorous. Interestingly, herbivory (plant-eating) is more prevalent toward low latitudes in ectotherms such as fish and aquatic invertebrates, and this may be temperature driven. We used pond snails (Lymnaea stagnalis L.) as a model aquatic ectotherm species and tested their consumption of both animal prey (Gammarus pulex L.) and plant material (Potamogeton lucens L.) at three different temperatures (15, 20, and 25°C). Higher temperatures led to higher consumption rates by the omnivore on both plant food and animal prey when fed separately. When the food was offered simultaneously, the pond snails consistently preferred animal prey over plant material at all tested temperatures. However, the omnivore did consume plant material even though they had enough animal prey available to them. Based on our experiments, we conclude that with increasing temperatures, L. stagnalis will only increase their consumption rates but not change food preference. Further studies are needed to test the generality of our findings across aquatic species to predict the effect of warming on aquatic plant consumption.

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Section: Discussionmentioning

confidence: 53%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The effect of temperature on herbivory by the omnivorous ectotherm snail Lymnaea stagnalis

et al. 2016

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“…Sin embargo, en zonas tropicales con influencia de procesos de surgencia estacional, la variación temporal de la temperatura puede tener un intervalo de variación de entre 8 a 10 ºC en los primeros 50 m de profundidad (Giraldo et al, 2008;Rodríguez-Rubio & Giraldo, 2011;Valencia et al, 2013), como lo encontrado en nuestros resultados para Bahía Cupica. Estos dos parámetros oceanográficos generalmente influyen en la abundancia y el recambio de especies de copépodos, así como también, pueden modular la demanda metabólica, tasas de reproducción, talla, y preferencia alimentaria (Christou, 1998;Murcia & Giraldo, 2007;Rakhesh et al, 2013;Garzke, Ismar, & Sommer, 2015;Boersma et al, 2016;Horne, Hirst, Atkinson, Neves, & Kiørboe, 2016;Medellín-Mora et al, 2016). En nuestro caso es importante resaltar que la comunidad cambia en su estructura debido al efecto del ascenso de la termoclina y haloclina, producto de la influencia del proceso de surgencia de la Ensenada de Panamá.…”

Section: Discussionunclassified

Copépodos epipelágicos en Bahía Cupica, Pacífico colombiano: composición de especies, distribución y variación temporal

Jeréz-Guerrero

Criales-Hernández

Giraldo

2017

RBT

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Epipelagic copepods in Bahía Cupica, Colombian Pacific: species composition, distribution and temporal variation. The study of changes in abundance and composition of copepod species, at different temporal and spatial scales, help to understand the ecosystems function and how the oceanographic dynamics affects their variability and other resources abundances. Since very few studies have been developed on this group in Colombian Pacific coastal areas, the purpose of this study was to assess the spatial and temporal changes in the copepods community distribution at Cupica Bay, between December 2012 and February 2013. For this, oblique plankton hauls were performed along six transects perpendicular to the coast, in 22 stations, using a Bongo Net (30 cm diameter, 2.1 m large, with mesh size 250 µm and 500 µm) equipped with a flowmeter, during two contrasting oceanographic periods. The results showed significant changes in oceanographic conditions and superficial circulation patterns. Fifty two (52) copepods species were identified, from which thirty five (35) were new records for the Colombian Pacific. The biggest copepod abundance was recorded in February 2013 (28 604 ind. 100 m -3 ), and small copepods species were the most dominant. During December 2012, species of the order Poecilostomatida were the most abundant (58.2), but during February were the species of the order Calanoida (69.5 %). The community structure and species composition was characterized by five significant groups, three groups during December 2012 and two during February 2013, dividing the bay in different zones. A positive correlation between temperature and copepods assemblages was evident during both periods, but stronger during December 2012. The results suggested that community structure and species composition of resident copepods in North Colombian Pacific neritic zones, are modelled by the intensity of upwelling, superficial local pattern circulation, and continental freshwater discharges in the region. The results are helpful to understand the copepods community structure, and the future studies should attempt to examine other variables (e.g. effect of food available and oxygen concentration dissolved) to improve understanding of copepods structure in the Pacific coast region of Colombia. Rev. Biol. Trop. 65 (3): 1046-1061. Epub 2017 September 01.

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“…As copepodites are slower growing and nearing reproduction, their survival may be maximized by adapting to higher temperatures and P limitation using phosphorus more efficiently according to the metabolic efficiency theory (Cross et al 2015; Boersma et al 2016). Because of the abundance and importance of P. crassirostris as a larval fish food source (Sampey et al 2007; Kline and Laidley 2015), changes in the survival, growth, and stoichiometry of this copepod species with climate change may alter subtropical coastal food webs.…”

Section: Introductionmentioning

confidence: 99%

The effects of food stoichiometry and temperature on copepods are mediated by ontogeny

et al. 2018

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Climate change is warming the oceans, increasing carbon dioxide partial pressure and reducing nutrient recycling from deep layers. This will affect carbon (C) and phosphorus (P) availability in the oceans, thus, altering the balance between the nutrient content of consumers and their food resource. The combined effects of food quality and temperature have been investigated for adult copepods; however, nauplii, the early developmental stages of copepods, often far outnumber adults, grow more rapidly and have a higher phosphorus body content and demand than later life stages. Consequently, ontogeny may affect how copepods respond to the combined stressors of increasing temperature and altered food stoichiometry. We conducted temperature-controlled experiments (24, 28 and 32 °C) where Parvocalanus crassirostris was fed either a P-replete or a P-limited phytoplankton food source. Reduced survival of nauplii and copepodites at the highest temperature was ameliorated when fed P-replete food. At higher temperatures, copepodite growth remained stable, but internal C:P stoichiometry diverged in the direction of phytoplankton C:P, suggesting that increased temperature affected copepodite stoichiometric homeostasis. In contrast, naupliar P content increased with temperature and naupliar growth was P limited, suggesting nauplii required additional phosphorus at higher temperatures. We conclude that resource stoichiometry plays a key role in how copepod survival and growth are impacted by temperature, and that ontogeny mediates these responses. Our results suggest that as the extent of warming oceans and phytoplankton nutrient limitation increase, copepod survival and the growth of early life stages may decline.Electronic supplementary materialThe online version of this article (10.1007/s00442-018-4183-6) contains supplementary material, which is available to authorized users.

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Temperature driven changes in the diet preference of omnivorous copepods: no more meat when it's hot?

Cited by 93 publications

References 49 publications

The effect of temperature on herbivory by the omnivorous ectotherm snail Lymnaea stagnalis

The effect of temperature on herbivory by the omnivorous ectotherm snail Lymnaea stagnalis

Copépodos epipelágicos en Bahía Cupica, Pacífico colombiano: composición de especies, distribución y variación temporal

The effects of food stoichiometry and temperature on copepods are mediated by ontogeny

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