Abstract
The biological oceanography of waters adjacent to Australia's North West Cape (21° 49′ S, 114° 14′ E) was studied during the austral summers of 1997/98 and 1998/99. We measured egg production rate (EPR) by the small paracalanid copepods that dominated the calanoid community. Bottle incubation experiments were conducted at a shallow (∼20 m) station in the mouth of Exmouth Gulf, and at a shelf-break station (∼80 m). In 1997/98, we measured EPR by Paracalanus aculeatus, P. indicus, Acrocalanus gracilis and Bestiolina similis, but in 1998/99, we concentrated on P. indicus. Maximal observed EPRs by Paracalanus and Acrocalanus species were ∼ 30 eggs female−1 d−1, but B. similis attained only 17 eggs female−1 d−1. Sporadic measurements of EPR by P. aculeatus minor (maximum ∼ 4 eggs female−1 d−1) and Parvocalanus crassirostris (∼ 9 eggs female−1 d−1) were also made. However, maximal EPRs were seldom achieved and were often less than 10 eggs female−1 d−1. There was no difference between EPR of either P. indicus or B. similis in 1997/98 and 1998/99, despite differences in temperature. Trophic resources severely limit copepod egg production in this area. We suggest that variability and skewness of egg production data derived from individual incubations may be used to judge the degree of food limitation of the population and the variability in feeding success between individuals. The dominance of small copepods and the invariance in their EPR suggest that pulses in physical forcing and subsequent primary production will be severely damped by trophodynamic processes before reaching larval fish.
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References
Ayukai, T. & D. Miller, 1998. Phytoplankton biomass, production and grazing mortality in Exmouth Gulf, a shallow embayment on the arid, tropical coast of Western Australia. J. exp. mar. Biol. Ecol. 225: 239–251.
Bamstedt, U., 1988. Ecological significance of individual variability in copepod bioenergetics. Hydrobiologia 167/168: 43–59.
Carlotti, F., C. Rey, A. Javanshir & S. Nival, 1997. Laboratory studies on egg and faecal pellet production of Centropages typicus: effect of age, effect of temperature, individual variability. J. Plankton. Res. 19: 1143–1165.
Chisholm, L. A. & J. C. Roff, 1990. Abundances, growth rates and production of tropical neritic copepods off Kingston, Jamaica. Mar. Biol. 106: 79–89.
Dagg, M., 1977. Some effects of patchy food environments in copepods. Limnol. Oceanogr. 22: 99–107.
Davis, C. S., 1987. Components of the zooplankton production cycle in the temperate ocean. J. mar. Res. 45: 947–983.
Furnas, M. J. & A. W. Mitchell, 1986. Phytoplankton dynamics in the central Great Barrier Reef - I. Seasonal changes in biomass and community structure and their relation to intrusive activity. Cont. Shelf Res. 6: 363–384.
Gó mez-Gutiérrez, J. & W. T. Peterson, 1999. Egg production rates of eight calanoid copepod species during summer 1997 off Newport, Oregon, U.S.A. J. Plankton Res. 21: 637–658.
Hay, S., 1995. Egg production and secondary production of common North Sea copepods: field estimates with regional and seasonal comparisons. ICES J. mar. Sci. 52: 315–327.
Holloway, P. E., S. E. Humphries, M. Atkinson & J. Imberger, 1985. Mechanisms for nitrogen supply to the Australian North West Shelf. Aust. J. mar. Freshwat. Res. 36: 753–764.
Hopcroft, R. R. & J. C. Roff, 1998. Zooplankton growth rates: the influence of female size and resources on egg production of tropical marine copepods. Mar. Biol. 132: 79–86.
Hopcroft, R. R., J. C. Roff & D. Lombard, 1998. Production of tropical copepods in Kingston Harbour, Jamaica: the importance of small species. Mar. Biol: 130 pp.
Huntley, M. & M. D. G. Lopez, 1992. Temperature-dependent production of marine copepods: a global synthesis. Am. Nat. 140: 201–242.
Ianora, A., 1990. The effect of reproductive condition on egg production rates in the planktonic copepod Centropages typicus. J. Plankton Res. 12: 885–890.
Ianora, A. & I. Buttino, 1990. Seasonal cycles in population abundances and egg production rates in the planktonic copepods Centropages typicus and Acartia clausi. J. Plankton Res. 12: 473–481.
Ianora, A., M. G. Mazzocchi & R. Grottoli, 1992. Seasonal fluctuations in fecundity and hatching success in the planktonic copepod Centropages typicus. J. Plankton Res. 14: 1483–1494.
Ianora, A., B. Scotto Di Carlo & P. Mascellaro, 1989. Reproductive biology of the planktonic copepod Temora stylifera. Mar. Biol. 101: 187–194.
Kimmerer, W. J., 1984. Spatial and temporal variability in egg production rates of the calanoid copepod Acrocalanus inermis. Mar. Biol 78: 165–169.
Kimmerer, W. J. & A. D. McKinnon, 1989. Zooplankton in a marine bay. III. Evidence for influence of vertebrate predation on distributions of two common copepods. Mar. Ecol. Prog. Ser. 53: 21–35.
Kiø rboe, T., F. Mohlenberg & H. U. Riisgard, 1985. In situ feeding rates of planktonic copepods: a comparison of four methods. J. exp. mar. Biol. Ecol. 88: 67–81.
Kleppel, G. S., C. A. Burkart & L. Houchin, 1998. Nutrition and the regulation of egg production in the calanoid copepod Acartia tonsa. Limnol. Oceanogr. 43: 1000–1007.
Kleppel, G. S., R. E. Pieper & G. Trager, 1988. Variability in the gut contents on individual Acartia tonsa from waters off Southern California. Mar. Biol. 97: 185–190.
Laabir, M., S. A. Poulet & A. Ianora, 1995. Measuring production and viability of eggs in Calanus helgolandicus. J. Plankton Res. 17: 1125–1142.
Lopez, M. D. G., M. E. Huntley & J. T. Lovette, 1993. Calanoides acutus in Gerlache Strait, Antarctica. I. Distribution of late copepodite stages and reproduction during spring. Mar. Ecol. Prog. Ser. 100: 153–165.
Mauchline, J., 1998. The biology of calanoid copepods. Academic Press, San Diego.
McKinnon, A. D., 1996. Growth and development in the subtropical copepod Acrocalanus gibber. Limnol. Oceanogr. 1438–1447.
McKinnon, A. D. & T. Ayukai, 1996. Copepod egg production and food resources in Exmouth Gulf, Western Australia. Mar. Freshwat. Res. 47: 595–603.
McKinnon, A. D. & S. R. Thorrold, 1993. Zooplankton community structure and copepod egg production in coastal waters of the central Great Barrier Reef lagoon. J. Plankton Res. 15: 1387–1411.
Montagnes, D. J. S., A. J. Poulton & T. M. Shammon, 1999. Mesoscale, finescale and microscale distribution of micro-and nanoplankton in the Irish Sea, with emphasis on ciliates and their prey. Mar. Biol. 134: 167–179.
Niehoff, B., U. Klenke, H.-J. Hirche, X. Irigoien, R. Head & R. P. Harris, 1999. A high frequency time series at Weathership M, Norwegian Sea, during the 1997 spring bloom: the reproductive biology of Calanus finmarchicus. Mar. Ecol. Prog. Ser. 176: 81–92.
Owen, R. W., 1989. Microscale and finescale variations of small plankton in coastal and pelagic environments. J. mar. Res. 47: 197–240.
Peterson, W. T., P. Tiselius & T. Kiø rboe, 1991. Copepod egg production, moulting and growth rates, and secondary production, in the Skagerrak in August 1988. J. Plankton Res. 13: 131–154.
Richardson, A. J. & H. M. Verheye, 1999. Growth rates of copepods in the southern Benguela upwelling system: the interplay between body size and food. Limnol. Oceanogr. 44: 382–392.
Rodriguez, V. & E. G. Durbin, 1992. Evaluation of synchrony of feeding behaviour in individual Acartia hudsonica (Copepoda, Calanoida). Mar. Ecol. Prog. Ser. 87: 7–13.
Rodríguez, V., F. Guerrero & B. Bautista, 1995. Egg production of individual copepods of Acartia grani Sars from coastal waters: seasonal and diel variability. J. Plankton Res. 17: 2233–2250.
Runge, J. A., 1988. Should we expect a relationship between primary production and fisheries? The role of copepod dynamics as a filter of trophic variability. Hydrobiologia 167/168: 61–71.
Runge, J. A. & J. C. Roff, 2000. The measurement of growth and reproductive rates. In Harris, R. P., P. H. Wiebe, J. Lenz, H. R. Skjoldal & M. Huntley (eds) ICES Zooplankton Methodology Manual. Academic Press, New York: 401–454.
Saiz, E., A. Calbet, I. Trepat, X. Irigoien & M. Alcaraz, 1997. Food availability as a potential source of bias in the egg production method for copepods. J. Plankton Res. 19: 1–14.
Strickland, J. D. H., 1965. Production of organic matter in the primary stages of the marine food chain. In J. P. Riley & G. Skirrow (eds), Chemical Oceanography Vol. 1. Academic Press, New York: 477–610.
Strickland, J. D. H. & T. R. Parsons, 1972. A practical handbook of seawater analysis. Fisheries Res. Bd. Canada Bulletin 167. 2nd edn. Ottawa.
Tester, P. A. & J. T. Turner, 1990. How long does it take copepods to make eggs? J. exp. mar. Biol. Ecol. 141: 169–182.
Tourangeau, S. & J. A. Runge, 1991. Reproduction of Calanus glacialis under ice in spring in Southeastern Hudson Bay, Canada. Mar. Biol. 108: 227–233.
Tranter, D. J., 1962. Zooplankton abundance in Australasian waters. Aust. J. mar. Freshwat. Res. 13: 106–142.
Uye, S. & N. Shibuno, 1992. Reproductive biology of the planktonic copepod Paracalanus sp. in the Inland Sea of Japan. J. Plankton Res. 14: 343–358.
Uye, S., T. Yamaoka & T. Fujisawa, 1992. Are tidal fronts good recruitment areas for herbivorous copepods? Fish. Oceanogr. 1: 216–226.
Webber, M. K. & J. C. Roff, 1995. Annual biomass and production of the oceanic copepod community off Discovery Bay, Jamaica. Mar. Biol. 123: 481–495.
Williamson, C. E. & N. M. Butler, 1987. Temperature, food and mate limitation of copepod reproductive rates: separating the effects of multiple hypotheses. J. Plankton Res. 9: 821–836.
Zar, J. H., 1984. Biostatistical Analysis. 2nd edn. Prentice-Hall, Inc., New Jersey.
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McKinnon, A.D., Duggan, S. Summer egg production rates of paracalanid copepods in subtropical waters adjacent to Australia's North West Cape. Hydrobiologia 453, 121–132 (2001). https://doi.org/10.1023/A:1013115900841
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DOI: https://doi.org/10.1023/A:1013115900841