Why does Calanus sinicus prosper in the shelf ecosystem of the Northwest Pacific Ocean?

Zooplankton spatial and diurnal variations in the Changjiang River estuary before operation of the Three Gorges Dam

“…In addition, temperature may be more important than salinity for C. sinicus. Although laboratory experiments revealed that the lower and upper thermal limits for the embryonic development of C. sinicus were 5°C and 23°C, respectively (Uye, 1988), its biomass was low at lower temperatures and gradually increased to a maximum at around 20°C (Uye, 2000). At temperatures above 23°C, the population may be thermally stressed, thereby resulting in a decreasing population.…”

“…Calanus sinicus can survive over a wide salinity range, and their occurrence in the plankton has been confirmed at salinities as low as 15 (Imabayashi et al, 1986). Based on its extended distribution in the Pacific Ocean off northeast Japan, 35 may be the upper limit for C. sinicus (Uye, 2000). In addition, temperature may be more important than salinity for C. sinicus.…”

Reduced up-regulation of gene expression in response to elevated temperatures in the mid-Atlantic population of Calanus finmarchicus

“…Planktonic marine copepods of the genus Calanus (Crustacea: Copepoda: Calanoida: Calanidae) largely dominate the zooplankton biomass in the global ocean (up to 70%) (Conover, 1988;Head et al, 2003;Uye, 2000). They play a key role in energy transfer from the primary production level to higher trophic levels (Beaugrand, 2009;Falk-Petersen et al, 2007), with many ecologically and commercially important fishes (e.g., Gislason and Astthorsson, 2002;Søreide et al, 2008;Uye, 2000), as well as invertebrates, birds and marine mammals (Michaud and Taggart, 2007;Skjoldal et al, 2004;Weslawski et al, 1999) depending on Calanus as a food source.…”

“…They play a key role in energy transfer from the primary production level to higher trophic levels (Beaugrand, 2009;Falk-Petersen et al, 2007), with many ecologically and commercially important fishes (e.g., Gislason and Astthorsson, 2002;Søreide et al, 2008;Uye, 2000), as well as invertebrates, birds and marine mammals (Michaud and Taggart, 2007;Skjoldal et al, 2004;Weslawski et al, 1999) depending on Calanus as a food source. In the North Atlantic Ocean, Calanus finmarchicus (Gunnerus, 1770) is the dominant Calanus species where it plays a central role in trophic dynamics (Falk-Petersen et al, 2007;Hirche and Kosobokova, 2007), and has been the focus of several basinscale research programs (Gifford et al, 2010;Melle et al, 2014;Tande and Miller, 2000).…”

Short-term variation in the <i>Calanus sinicus</i> ammonium excretion rate during the post-capture period

“…Recently, highly sensitive ammonium analytical methods were successfully applied to estimate the ammonium excretion rate by Antarctic krill with short-term incubation times ( 3 h), while only a few similar attempts have been made thus far with respect to excretion by copepods. In the present study, we applied a highly sensitive analytical method to a planktonic copepod, Calanus sinicus, which is the major macrozooplankton component in Japanese coastal areas (e.g., Uye 2000), in order to examine short-term variations in their ammonium excretion rates under experimental conditions.…”