Abstract
The small cyclopoid copepod Oithona is widely occurring in polar areas; however, knowledge of its biology and ecology is very limited. Here, we investigate the population dynamics, vertical distribution, and reproductive characteristics of Oithona spp. from late winter to summer, in a subarctic fjord of West Greenland. During winter–early spring, the abundance of Oithona spp. was low (1.8 × 103 ind. m−2) and the population was mainly composed of late copepodites and adults, whereas in summer, abundance peaked and younger stages dominated (1.1 × 106 ind. m−2). In general, all stages of Oithona spp. remained in the upper 100 m, with nauplii exhibiting a shallower distribution. Although no general seasonal migration was found, a deeper distribution of the adult females in winter was observed. The mean clutch size of Oithona spp. varied from 16 to 30 eggs per female, peaking in summer. Egg production rates (EPR) were low in winter–early spring (0.13 ± 0.03 eggs female−1 day−1) and reached maximum values in summer (1.6 ± 0.45 eggs female−1 day−1). EPR of Oithona spp. showed a significantly positive relationship with both temperature and protozooplankton biomass, and the development of the population seemed to be appreciably affected by temperature. Oithona spp. remained active throughout the study, stressing the key importance of these small copepods in high-latitude ecosystems, especially in periods when larger copepods are not present in the surface layer.
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Arendt KE, Juul-Pedersen T, Mortensen J, Blicher ME, Rysgaard S (2013) A 5-year study of seasonal patterns in mesozooplankton community structure in a sub-Arctic fjord reveals dominance of Microsetella norvegica (Crustacea, Copepoda). J Plankton Res 35:105–120
Ashjian CJ, Campbell RG, Welch HE, Butler M, Van Keuren D (2003) Annual cycle in abundance, distribution, and size in relation to hydrography of important copepod species in the western Arctic Ocean. Deep Sea Res Part I 50:1235–1261. doi:10.1016/s0967-0637(03)00129-8
Atienza D, Calbet A, Saiz E, Alcaraz M, Trepat I (2006) Trophic impact, metabolism, and biogeochemical role of the marine cladoceran Penilia avirostris and the co-dominant copepod Oithona nana in NW Mediterranean coastal waters. Mar Biol 150:221–235. doi:10.1007/s00227-006-0351-z
Atkinson A (1995) Omnivory and feeding selectivity in five copepod species during spring in the Bellingshausen Sea, Antarctica. ICES J Mar Sci J du Conseil 52:385–396. doi:10.1016/1054-3139(95)80054-9
Atkinson A (1998) Life cycle strategies of epipelagic copepods in the Southern Ocean. J Mar Syst 15:289–311. doi:10.1016/S0924-7963(97)00081-X
Atkinson A, Sinclair J (2000) Zonal distribution and seasonal vertical migration of copepod assemblages in the Scotia Sea. Pol Biol 23:46–58
Berggreen U, Hansen B, Kiørboe T (1988) Food size spectra, ingestion and growth of the copepod Acartia tonsa during development: implications for determination of copepod production. Mar Biol 99:341–352
Bollens SM, Frost BW (1989) Predator-induced diel vertical migration in a planktonic copepod. J Plankton Res 11:1047–1065. doi:10.1093/plankt/11.5.1047
Bunker AJ, Hirst AG (2004) Fecundity of marine planktonic copepods: global rates and patterns in relation to chlorophyll a, temperature and body weight. Mar Ecol Prog Ser 279:161–181. doi:10.3354/meps279161
Castellani C, Irigoien X, Harris RP, Lampitt RS (2005) Feeding and egg production of Oithona similis in the North Atlantic. Mar Ecol Prog Ser 288:173–182. doi:10.3354/meps288173
Castellani C, Irigoien X, Harris RP, Holliday NP (2007) Regional and temporal variation of Oithona spp. biomass, stage structure and productivity in the Irminger Sea, North Atlantic. J Plankton Res 29:1051–1070
Conover RJ (1988) Comparative life histories in the genera Calanus and Neocalanus in high latitudes of the northern hemisphere. Hydrobiol 167(168):127–142
Dvoretsky V, Dvoretsky A (2009) Life cycle of Oithona similis (Copepoda: Cyclopoida) in Kola Bay (Barents Sea). Mar Biol 156:1433–1446. doi:10.1007/s00227-009-1183-4
Edmondson W (1971) Reproductive rates determined directly from egg ratio. In: Edmondson WT, Winberg GG (eds) A manual on methods for assessment of secondary production in fresh waters. Blackwell, Oxford, pp 165–169
Eiane K, Ohman MD (2004) Stage-specific mortality of Calanus finmarchicus, Pseudocalanus elongatus and Oithona similis on Fladen Ground, North Sea, during a spring bloom. Mar Ecol Prog Ser 268:183–193. doi:10.3354/meps268183
Gislason A (2008) Vertical distribution and seasonal dynamics of mesozooplankton in the Iceland Basin. Mar Biol Res 4:401–413
Grainger E (1989) Vertical distribution of zooplankton in the central Arctic Ocean. In: Proceedings of the sixth conference of the Comité Arctique International, pp 48–60
Hansen FC, Mollmann C, Schutz U, Hinrichsen H-H (2004) Spatio-temporal distribution of Oithona similis in the Bornholm Basin (Central Baltic Sea). J Plankton Res 26:659–668. doi:10.1093/plankt/fbh061
Hirche H-J (1997) Life cycle of the copepod Calanus hyperboreus in the Greenland Sea. Mar Biol 128:607–618
Hirche H-J, Mumm N (1992) Distribution of dominant copepods in the Nansen Basin, Arctic Ocean, in summer. Deep Sea Res 39:S485–S505
Hopcroft R, Clarke C, Nelson R, Raskoff K (2005) Zooplankton communities of the Arctic’s Canada Basin: the contribution by smaller taxa. Pol Biol 28:198–206
Hygum B, Rey C, Hansen B (2000) Growth and development rates of Calanus finmarchicus nauplii during a diatom spring bloom. Mar Biol 136:1075–1085
Kiørboe T, Møhlenberg F, Riisgård HU (1985) In situ feeding rates of plantonic copepods: a comparison of four methods. J Exp Mar Biol Ecol 88:67–81
Klein Breteler WCM, Fransz HG, Gonzalez SR (1982) Growth and development of four calanoid copepod species under experimental and natural conditions. Neth J Sea Res 16:195–207
Lischka S, Hagen W (2005) Life histories of the copepods Pseudocalanus minutus, P. acuspes (Calanoida) and Oithona similis (Cyclopoida) in the Arctic Kongsfjorden (Svalbard). Pol Biol 28:910–921
Madsen SD, Nielsen TG, Hansen BW (2008) Annual population development and production by small copepods in Disko Bay, western Greenland. Mar Biol 155:63–77. doi:10.1007/s00227-008-1007-y
Metz C (1995) Seasonal variation in the distribution and abundance of Oithona and Oncaea species (Copepoda, Crustacea) in the southeastern Weddell Sea, Antarctica. Pol Biol 15:187–194
Møller EF, Nielsen TG, Richardson K (2006) The zooplankton community in the Greenland Sea: composition and role in carbon turnover. Deep Sea Res Part I 53:76–93. doi:10.1016/j.dsr.2005.09.007
Mortensen J, Lennert K, Bendtsen J, Rysgaard S (2011) Heat sources for glacial melt in a sub-Arctic fjord (Godthåbsfjord) in contact with the Greenland Ice Sheet. J Geophys Res Oceans 116:C01013
Narcy F, Gasparini S, Falk-Petersen S, Mayzaud P (2009) Seasonal and individual variability of lipid reserves in Oithona similis (Cyclopoida) in an Arctic fjord. Pol Biol 32:233–242. doi:10.1007/s00300-008-0524-y
Nielsen TG, Sabatini M (1996) Role of cyclopoid copepods Oithona spp. in North Sea plankton communities. Mar Ecol Prog Ser 139:79–93. doi:10.3354/meps139079
Nielsen TG, Moller EF, Satapoomin S, Ringuette M, Hopcroft RR (2002) Egg hatching rate of the cyclopoid copepod Oithona similis in arctic and temperate waters. Mar Ecol Prog Ser 236:301–306
Nishibe Y, Kobari T, Ota T (2010) Feeding by the cyclopoid copepod Oithona similis on the microplankton assemblage in the Oyashio region during spring. Plankton Benthos Res 5:74–78
Ohman MD (1990) The demographic benefits of diel vertical migration by zooplankton. Ecol Monogr 60:257–281
Pedersen SA, Ribergaard MH, Simonsen CS (2005) Micro- and mesozooplankton in Southwest Greenland waters in relation to environmental factors. J Mar Syst 56:85–112. doi:10.1016/j.jmarsys.2004.11.004
Sabatini M, Kiørboe T (1994) Egg production, growth and development of the cyclopoid copepod Oithona similis. J Plankton Res 16:1329–1351. doi:10.1093/plankt/16.10
Santer B, Lampert W (1995) Summer diapause in cyclopoid copepods: adaptive response to a food bottleneck? J Anim Ecol 64:600–613. doi:10.2307/5803
Satapoomin S (1999) Carbon content of some common tropical Andaman Sea copepods. J Plankton Res 21:2117–2123
Svensen C, Seuthe L, Vasilyeva Y, Pasternak A, Hansen E (2011) Zooplankton distribution across Fram Strait in autumn: are small copepods and protozooplankton important? Prog Oceanogr 91:534–544. doi:10.1016/j.pocean.2011.08.001
Tanimura A, Hattori H, Miyamoto Y, Hoshiai T, Fukuchi M (2008) Diel changes in vertical distribution of Oithona similis (Cyclopoida) and Oncaea curvata (Poecilostomatoida) under sea ice in mid-summer near Syowa Station, Antarctica. Pol Biol 31:561–567
Temperoni B, Viñas MD, Diovisalvi N, Negri R (2011) Seasonal production of Oithona nana Giesbrecht, 1893 (Copepoda: Cyclopoida) in temperate coastal waters off Argentina. J Plankton Res 33:729–740. doi:10.1093/plankt/fbq141
Thor P, Nielsen TG, Tiselius P (2008) Mortality rates of epipelagic copepods in the post-spring bloom period in Disko Bay, western Greenland. Mar Ecol Prog Ser 359:151–160. doi:10.3354/meps07376
Uye S, Sano K (1995) Seasonal reproductive biology of the small cyclopoid copepod Oithona davisae in a temperate eutrophic inlet. Mar Ecol Prog Ser 118:121–128
Uye S, Aoto I, Onbé T (2002) Seasonal population dynamics and production of Microsetella norvegica, a widely distributed but little-studied marine planktonic harpacticoid copepod. J Plankton Res 24:143–153. doi:10.1093/plankt/24.2.143
Varpe Ø, Jørgensen C, Tarling GA, Fiksen Ø (2007) Early is better: seasonal egg fitness and timing of reproduction in a zooplankton life-history model. Oikos 116:1331–1342
Ward P, Hirst A (2007) Oithona similis in a high latitude ecosystem: abundance, distribution and temperature limitation of fecundity rates in a sac spawning copepod. Mar Biol 151:1099–1110. doi:10.1007/s00227-006-0548-1
Zamora-Terol S, Nielsen TG, Saiz E (2013) Plankton community structure and role of Oithona similis on the western coast of Greenland during the winter-spring transition. Mar Ecol Prog Ser 483:85–102. doi:10.3354/meps10288
Acknowledgments
We thank the Greenland Institute of Natural Resources in Nuuk for excellent laboratory facilities; we also thank the captain and the crew on Lille Massik and on R/V Dana for their help during the samplings. We would also like to thank Karen Riisgaard, Birgit Søborg, Thomas Krog, Knud Kreutzmann, Henrik Philipsen and John Mortensen for help with logistics and equipment. This study was supported by the Greenland Climate Research Centre through the project 6505 to T.G. Nielsen. The research leading to these results has received funding from the European Commission FP7 EURO-BASIN (Grant Agreement: 264 933), and from the Spanish Ministry of Economy and Competitiveness through a Ph.D. fellowship (BES-2008-004231) to S. Zamora-Terol, and the project CTM2007-60052 to E. Saiz. We finally thank the 3 anonymous reviewers and Dieter Piepenburg for their comments on the manuscript.
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Zamora-Terol, S., Kjellerup, S., Swalethorp, R. et al. Population dynamics and production of the small copepod Oithona spp. in a subarctic fjord of West Greenland. Polar Biol 37, 953–965 (2014). https://doi.org/10.1007/s00300-014-1493-y
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DOI: https://doi.org/10.1007/s00300-014-1493-y