Diet of the Copepod Calanus Sinicus Brodsky, 1962 (Copepoda, Calanoida, Calanidae) in Northern Coastal Waters of Taiwan During the Northeast Monsoon Period

Chen, Ming–Ren; Ka, Samba Laha; Hwang, Jiang‐Shiou

doi:10.1163/001121610x504360

Cited by 20 publications

(4 citation statements)

References 40 publications

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“…Our results support earlier laboratory and field studies that provide direct evidence of feeding interactions between marine snow and euphausiids (Dilling et al 1998, Dilling & Brzezinski 2004, ostracods and amphipods (Lampitt et al 1993b), as well as copepods (Steinberg 1995, Koski et al 2007, Chen et al 2010, Wilson & Steinberg 2010. A few studies provided, as we have here, indirect evidence of feeding interactions through close spatial associations between zooplankton and marine snow aggregates (Shanks & Edmondson 1990, Bochdansky & Herndl 1992, Green & Dagg 1997, Shanks & del Carmen 1997, Malkiel et al 2006.…”

Section: Trophic Interactions Between Marine Snow and Zooplanktonsupporting

confidence: 91%

Marine snow, zooplankton and thin layers: indications of a trophic link from small-scale sampling with the Video Plankton Recorder

Moeller

John²,

Temming

et al. 2012

Mar. Ecol. Prog. Ser.

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Marine aggregates of biogenic origin, known as marine snow, are considered to play a major role in the ocean's particle flux and may represent a concentrated food source for zooplankton. However, observing the marine snow−zooplankton interaction in the field is difficult since conventional net sampling does not collect marine snow quantitatively and cannot resolve so-called thin layers in which this interaction occurs. Hence, field evidence for the importance of the marine snow−zooplankton link is scarce. Here we employed a Video Plankton Recorder (VPR) to quantify small-scale (metres) vertical distribution patterns of fragile marine snow aggregates and zooplankton in the Baltic Sea during late spring 2002. By using this non-invasive optical sampling technique we recorded a peak in copepod abundance (ca. 18 ind. l −1 ) associated with a pronounced thin layer (50 to 55 m) of marine snow (maximum abundance of 28 particles l −1 ), a feature rarely resolved. We provide indirect evidence of copepods feeding on marine snow by computing a spatial overlap index that indicated a strong positively correlated distribution pattern within the thin layer. Furthermore we recorded images of copepods attached to aggregates and demonstrating feeding behaviour, which also suggests a trophic interaction. Our observations highlight the potential significance of marine snow in marine ecosystems and its potential as a food resource for various trophic levels, from bacteria up to fish.

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Section: Trophic Interactions Between Marine Snow and Zooplanktonsupporting

confidence: 91%

Marine snow, zooplankton and thin layers: indications of a trophic link from small-scale sampling with the Video Plankton Recorder

Moeller

John²,

Temming

et al. 2012

Mar. Ecol. Prog. Ser.

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“…Laboratory experiments with C. helgolandicus demonstrated that, in general, males moulted to adult and died in culture sooner than the females (Mullin and Brooks 1967). Male Temora longicornis were less sensitive (exhibited slower swimming velocities) to the presence of food than females (Moison et al 2013) and gut fullness ratios were lowest in male Calanus sinicus (Chen et al 2010), indicating that male copepods simply do not forage or ingest as much food as females. Calanus finmarchicus (Ohman et al 2004) and Calanus pacificus (Ohman and Hsieh 2008) male mortality rates were explained by atrophied mouth-parts and reduced feeding rates of adult males, leading to an exhaustion of lipid reserves.…”

Section: Comparing Mortality Rates Between Sexesmentioning

confidence: 97%

“…This paper aims to elucidate mortality rates together with attribution to the causes, and to explore the temporal dynamics of the mortality of the copepod species Calanus helgolandicus. This temperate copepod, inhabiting the North Eastern Atlantic and fringing shelves, is experiencing an expanding distribution which has been linked to various factors, including environmental warming (Chust et al 2014). It is an important contributor to the zooplankton biomass in these regions (Beaugrand et al 2003(Beaugrand et al , 2009Bonnet et al 2005), and is considered an important prey source for commercially important fish species (Heath 2007).…”

mentioning

confidence: 99%

Mortality of Calanus helgolandicus: Sources, differences between the sexes and consumptive and nonconsumptive processes

Maud

Hirst

Atkinson

et al. 2018

Limnology & Oceanography

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While losses from mortality are as important as gains from reproduction in zooplankton population dynamics, the former are more challenging to quantify. We used two approaches to provide complementary insights into the mortality of a biomass-dominant copepod, Calanus helgolandicus, at Station L4 in the English Channel. Using a neutral-red staining method, we found that dead carcasses represented a mean of 9% of the C. helgolandicus copepodites sampled. The resulting nonconsumptive mortality rates are the first that have been derived for C. helgolandicus; and estimates suggest a contribution of 0-54% (median of 4.4%) to the total mortality rate. Consumptive mortality (i.e., that due to removal by predation), dominated for most of the year and contributed a mean of 89% to total mortality. Nonconsumptive mortality increased during summer and winter, and was positively related to maximum wind speed during the preceding 72 h, indicating that extreme weather events may lead to increased mortality. Using the Vertical Life Table approach, mortality rates across the CV-adult male stage pair were on average 2.5 times greater than those of CV-adult females. Adult male consumptive mortality rates were 6 times greater than those for females; adult male nonconsumptive rates were twice those of females, suggesting that predation is of greater significance to male loss rates. Summer CV-adult mortality rates were positively correlated to temperature, and to the abundance of predatory chaetognaths and siphonophores, suggesting that the gelatinous predator assemblage is the dominant agent for population control of late stage copepodites of C. helgolandicus at L4.

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“…Zooplankton consumes phytoplankton and plays important roles in transferring carbon and energy to upper trophic levels in the food web (Dahms et al 2012). Planktonic copepods in turn are dominant taxa among zooplankton assemblages (Tseng et al 2008dChen et al 2010;Hsiao et al 2011;Chou et al 2012). Their feeding behaviors deeply affect fluxes of carbon and energy Vandromme et al 2010;Wu et al 2010Wu et al , 2011.…”

Section: Introductionmentioning

confidence: 99%

Geospatial variability in the autumn community structure of epipelagic zooplankton in the upper layer of the northern South China Sea

et al. 2013

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Background: For the present study, we collected mesozooplankton in the upper layer (above 100 m in depth) of four stations in the northern South China Sea (SCS) to determine the influence of different water masses on their distribution and abundance from 27 September to 2 October 1999. Results: In total, 18 major zooplankton taxa were recovered from the samples. Calanoid copepods, Noctilucales, and chaetognaths were dominant and together comprised 65.90% of the overall zooplankton counts. Zooplankton densities ranged from 102.19 to 1,285.24 individuals per cubic meters (ind./m

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Diet of the Copepod Calanus Sinicus Brodsky, 1962 (Copepoda, Calanoida, Calanidae) in Northern Coastal Waters of Taiwan During the Northeast Monsoon Period

Abstract: The calanoid copepod, Calanus sinicus is transported into Taiwanese waters during the northeast (NE) monsoon season, during which time cold waters make incursions into Taiwanese coastal areas.

Cited by 20 publications

References 40 publications

Marine snow, zooplankton and thin layers: indications of a trophic link from small-scale sampling with the Video Plankton Recorder

Marine snow, zooplankton and thin layers: indications of a trophic link from small-scale sampling with the Video Plankton Recorder

Mortality of Calanus helgolandicus: Sources, differences between the sexes and consumptive and nonconsumptive processes

Geospatial variability in the autumn community structure of epipelagic zooplankton in the upper layer of the northern South China Sea

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