Different effects of increased water temperature on egg production of Calanus finmarchicus and C. glacialis

Pasternak, A. F.; Арашкевич, Е. Г.; Grothe, U.; Никишина, А. Б.; Solovyev, K. A.

doi:10.1134/s0001437013040085

Cited by 16 publications

(16 citation statements)

References 33 publications

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“…Instead, we use a dome-shaped relationship between growth and fecundity and temperature. Similar responses have now been established for a number of zooplankton species (White and Roman, 1992;Koski and Kuosa, 1999;Halsband-Lenk et al, 2002;Holste and Peck, 2006;Holste et al, 2009;Rhyne et al, 2009;Pasternak et al, 2013).…”

Section: Discussionsupporting

confidence: 63%

Spatial Modeling of Calanus finmarchicus and Calanus helgolandicus: Parameter Differences Explain Differences in Biogeography

2016

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The North Atlantic copepods Calanus finmarchicus and C. helgolandicus are moving north in response to rising temperatures. Understanding the drivers of their relative geographic distributions is required in order to anticipate future changes. To explore this, we created a new spatially explicit stage-structured model of their populations throughout the North Atlantic. Recent advances in understanding Calanus biology, including U-shaped relationships between growth and fecundity and temperature, and a new model of diapause duration are incorporated in the model. Equations were identical for both species, but some parameters were species-specific. The model was parameterized using Continuous Plankton Recorder Survey data and tested using time series of abundance and fecundity. The geographic distributions of both species were reproduced by assuming that only known interspecific differences and a difference in the temperature influence on mortality exist. We show that differences in diapause capability are not necessary to explain why C. helgolandicus is restricted to the continental shelf. Smaller body size and higher overwinter temperatures likely make true diapause implausible for C. helgolandicus. Known differences were incapable of explaining why only C. helgolandicus exists southwest of the British Isles. Further, the fecundity of C. helgolandicus in the English Channel is much lower than we predict. We hypothesize that food quality is a key influence on the population dynamics of these species. The modeling framework presented can potentially be extended to further Calanus species.

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Section: Discussionsupporting

confidence: 63%

Spatial Modeling of Calanus finmarchicus and Calanus helgolandicus: Parameter Differences Explain Differences in Biogeography

2016

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“…Furthermore, in areas where sea ice usually does not form at all, an increase in ocean temperature may initiate an earlier but shorter lasting spring bloom. This could negatively affect the abundance of Arctic Calanus, as high food levels to support offspring growth and development would then be available for only a short period of time (Pasternak et al 2013;Usov et al 2013). Also, despite their ability to employ a capital breeding strategy, less sea ice, and hence a decreased availability of ice algae, may substantially shorten the reproductive period of Arctic Calanus and decrease the number of eggs produced (e.g., Durbin and Casas 2013).…”

Section: Model Resultsmentioning

confidence: 99%

Climate warming decreases the survival of the little auk (Alle alle), a highArctic avian predator

Hovinen

Welcker

Descamps

et al. 2014

Ecology and Evolution

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Delayed maturity, low fecundity, and high adult survival are traits typical for species with a long-life expectancy. For such species, even a small change in adult survival can strongly affect the population dynamics and viability. We examined the effects of both regional and local climatic variability on adult survival of the little auk, a long-lived and numerous Arctic seabird species. We conducted a mark-resighting study for a period of 8 years (2006-2013) simultaneously at three little auk breeding sites that are influenced by the West Spitsbergen Current, which is the main carrier of warm, Atlantic water into the Arctic. We found that the survival of adult little auks was negatively correlated with both the North Atlantic Oscillation (NAO) index and local summer sea surface temperature (SST), with a time lag of 2 and 1 year, respectively. The effects of NAO and SST were likely mediated through a change in food quality and/or availability: (1) reproduction, growth, and development of Arctic Calanus copepods, the main prey of little auks, are negatively influenced by a reduction in sea ice, reduced ice algal production, and an earlier but shorter lasting spring bloom, all of which result from an increased NAO; (2) a high sea surface temperature shortens the reproductive period of Arctic Calanus, decreasing the number of eggs produced. A synchronous variation in survival rates at the different colonies indicates that climatic forcing was similar throughout the study area. Our findings suggest that a predicted warmer climate in the Arctic will negatively affect the population dynamics of the little auk, a high Arctic avian predator.

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“…Dome-shaped responses between egg production rate and temperature have been observed for a large number of zooplankton species (Halsband-Lenk et al, 2002;Holste and Peck, 2006;Holste et al, 2009;Rhyne et al, 2009;Koski and Kuosa, 1999;Pasternak et al, 2013. ) Egg production and ingestion rates are strongly correlated in calanoid copepods (Peterson and Dam, 1996), therefore the dome-shaped response between ingestion rate observed in both species implies that there will also be a dome-shaped response between egg production rate and temperature in both species.…”

Section: Comparison Of Egg Production Rate In Both Speciesmentioning

confidence: 92%

“…The relationship between egg production rate and temperature appears to be dome-shaped for most zooplankton species where egg production rate is reported at a broad enough temperature range (e.g. Halsband-Lenk et al, 2002;Holste and Peck, 2006;Pasternak et al, 2013). In addition to Møller et al (2012), a dome-shaped response has been found between ingestion rate and temperature in other zooplankton species (e.g.…”

Section: Growth and Development Modelmentioning

confidence: 94%

On the surprising lack of differences between two congeneric calanoid copepod species, Calanus finmarchicus and C. helgolandicus

Wilson

Speirs

Heath

2015

Progress in Oceanography

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The important calanoid copepod species Calanus finmarchicus and C. helgolandicus have distinct geographic ranges which are changing under the influence of climate change. Understanding the mechanisms underlying their distributions is becoming increasingly important as a result of the possible ecological impacts of these range shifts. Here we review inter-species differences in key life cycle traits that influence each species’ geographic distribution, in particular development and growth, fecundity, feeding behaviour, vertical migration and overwintering behaviour. The distinct temperature niche of each species leads to an a priori assumption that the response of life cycle traits to temperature is a key determinant of their contrasting geographic distributions. A new development model was created to reconcile published experimental development times for each species. Model output indicates that at temperatures below approximately 12-13 ˚C, C. finmarchicus is the faster developing species, but above these temperatures C. helgolandicus develops more quickly. Conventionally Calanus development time is assumed to decrease monotonically with temperature; however our model indicates that the response of development time to temperature is instead U-shaped. Differences in life cycle aspects such as seasonality and vertical structuring are interpreted in light of this development model. Body size and lipid accumulation abilities could be significant influences on each species’ geographic distribution; however evidence is consistent with inter-species differences not existing for these traits. Published evidence shows that inter-species differences in egg production may exist, but do not follow a clear pattern. Diapause is an important and well studied life cycle adaptation of C. finmarchicus, but has received little attention in C. helgolandicus. We synthesised knowledge of diapause and suggest the hypothesis that C. helgolandicus is restricted to continental shelf regions as a result of an inability to diapause for significant periods. This synthesised view of each species’ respective life cycle traits is that response of growth and development to temperature is the only known difference between each species, which indicates a promising direction for the extension of population models of C. finmarchicus to C. helgolandicus

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Different effects of increased water temperature on egg production of Calanus finmarchicus and C. glacialis

Cited by 16 publications

References 33 publications

Spatial Modeling of Calanus finmarchicus and Calanus helgolandicus: Parameter Differences Explain Differences in Biogeography

Spatial Modeling of Calanus finmarchicus and Calanus helgolandicus: Parameter Differences Explain Differences in Biogeography

Climate warming decreases the survival of the little auk (Alle alle), a highArctic avian predator

On the surprising lack of differences between two congeneric calanoid copepod species, Calanus finmarchicus and C. helgolandicus

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