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Advances in the aquatic sciences
RESEARCH ARTICLE

Low survival rather than breeding success explains little penguin population decline on Granite Island

Diane Colombelli-Négrel
+ Author Affiliations
- Author Affiliations

School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide, SA 5001, Australia. Email: diane.colombelli-negrel@flinders.edu.au

Marine and Freshwater Research 66(11) 1057-1065 https://doi.org/10.1071/MF14098
Submitted: 8 April 2014  Accepted: 14 December 2014   Published: 23 April 2015

Abstract

Over the past decade, populations of little penguins (Eudyptula minor) have been seriously declining across South Australia for reasons still not fully understood. In the present study, I investigated breeding performance and return rates of little penguins on Granite Island for 17 years in relation to patterns of population decline. I focussed on the impacts of human disturbance, breeding site, abandonment and predation on breeding success. The average breeding success was 1.05 ± 0.12 fledglings per pair; and breeding success increased since 1990, despite population decline. Breeding site was the main factor affecting breeding success. I found no effect of predation or abandonment on breeding success, but there was a negative effect of predation on the number of dead chicks found. In addition, I found a negative effect of human disturbance. Despite the observed increase in breeding success, return rates were extremely low for both adults (16.3%) and fledglings (2.3%). Population modelling confirmed the observed population decline on Granite Island, with subadult survival being the most critical variable affecting population growth. The present study thus highlighted the need for further studies into factors affecting survival of adults and subadults.


References

Allen, W. J., Helps, F. W., and Molles, L. E. (2011). Factors affecting breeding success of the Flea Bay white-flippered penguin (Eudyptula minor albosignata) colony. New Zealand Journal of Ecology 35, 199–208.

Bennett, P. M., and Owens, I. P. F. (2002). ‘Evolutionary Ecology of Birds: Life Histories, Mating Systems, and Extinction.’ (Oxford University Press: Oxford, UK.)

Böhning-Gaese, K., Taper, M. L., and Brown, J. H. (1993). Are declines in North American insectivorous songbirds due to causes on the breeding range? Conservation Biology 7, 76–86.
Are declines in North American insectivorous songbirds due to causes on the breeding range?Crossref | GoogleScholarGoogle Scholar |

Bool, N. M., Page, B., and Goldsworthy, S. D. (2007). What is causing the decline of little penguins (Eudyptula minor) on Granite Island, South Australia? SARDI Research Report Series number 217, Adelaide.

Braidwood, J. (2009). Breeding biology and threats to the blue penguin (Eudyptula minor) in South Westland, New Zealand. M.Sc. Thesis, Lincoln University, Lincoln, New Zealand.

Braidwood, J., Kunz, J., and Wilson, K. J. (2011). Effect of habitat features on the breeding success of the blue penguin (Eudyptula minor) on the west coast of New Zealand. New Zealand Journal of Zoology 38, 131–141.
Effect of habitat features on the breeding success of the blue penguin (Eudyptula minor) on the west coast of New Zealand.Crossref | GoogleScholarGoogle Scholar |

Brooks, R. J., Brown, G. P., and Galbraith, D. A. (1991). Effects of a sudden increase in natural mortality of adults on a population of the common snapping turtle (Chelydra serpentina). Canadian Journal of Zoology 69, 1314–1320.
Effects of a sudden increase in natural mortality of adults on a population of the common snapping turtle (Chelydra serpentina).Crossref | GoogleScholarGoogle Scholar |

Bull, L. (2000). Fidelity and breeding success of the blue penguin Eudyptula minor on Matiu-Somes Island, Wellington, New Zealand. New Zealand Journal of Zoology 27, 291–298.
Fidelity and breeding success of the blue penguin Eudyptula minor on Matiu-Somes Island, Wellington, New Zealand.Crossref | GoogleScholarGoogle Scholar |

Cannell, B., Krasnec, K., Campbell, K., Jones, H., Miller, R., and Stephens, N. (2013). The pathology and pathogenicity of a novel Haemoproteus spp. infection in wild little penguins (Eudyptula minor). Veterinary Parasitology 197, 74–84.
The pathology and pathogenicity of a novel Haemoproteus spp. infection in wild little penguins (Eudyptula minor).Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BC3snks1Kjtw%3D%3D&md5=87053bc0b3d4e481bd1f6fd2bae00826CAS | 23683654PubMed |

Caswell, H. (2001). ‘Matrix Population Models.’ (Sinauer Associates, Inc.: Sunderland, MA.)

Chiaradia, A. F., and Kerry, K. R. (1999). Daily nest attendance and breeding performance in the little penguin Eudyptula minor at Phillip Island, Australia. Marine Ornithology 27, 13–20.

Chiaradia, A., and Nisbet, I. C. T. (2006). Plasticity in parental provisioning and chick growth in little penguins Eudyptula minor in years of high and low breeding success. Ardea 94, 257–270.

Chiaradia, A., Ropert-Coudert, Y., Kato, A., Mattern, T., and Yorke, J. (2007). Diving behaviour of little penguins from four colonies across their whole distribution range: bathymetry affecting diving effort and fledging success. Marine Biology 151, 1535–1542.
Diving behaviour of little penguins from four colonies across their whole distribution range: bathymetry affecting diving effort and fledging success.Crossref | GoogleScholarGoogle Scholar |

Collins, M., Cullen, J. M., and Dann, P. (1999). Seasonal and annual foraging movements of little penguins from Phillip Island, Victoria. Wildlife Research 26, 705–721.
Seasonal and annual foraging movements of little penguins from Phillip Island, Victoria.Crossref | GoogleScholarGoogle Scholar |

Colombelli-Négrel, D., and Kleindorfer, S. (2014). Penguin monitoring and conservation activities in Gulf St Vincent between July 2013 and June 2014. Report to the Adelaide and Mount Lofty Ranges NRM Board, Adelaide.

Cormack, R. (1964). Estimates of survival from the sighting of marked animals. Biometrika 51, 429–438.
Estimates of survival from the sighting of marked animals.Crossref | GoogleScholarGoogle Scholar |

Dann, P. (1988). An experimental manipulation of clutch size in the little penguin Eudyptula minor. Emu 88, 101–103.
An experimental manipulation of clutch size in the little penguin Eudyptula minor.Crossref | GoogleScholarGoogle Scholar |

Dann, P. (1991). Distribution, population trends and factors influencing the population size of little penguins Eudyptula minor on Phillip Island, Victoria. Emu 91, 263–272.
Distribution, population trends and factors influencing the population size of little penguins Eudyptula minor on Phillip Island, Victoria.Crossref | GoogleScholarGoogle Scholar |

Dann, P. (1994). The abundance, breeding distribution and nest sites of blue penguins in Otago, New Zealand. Notornis 41, 157–166.

Dann, P., and Cullen, J. (1990). Survival, patterns of reproduction, and lifetime reproductive output in Little Blue Penguins (Eudyptula minor) on Phillip Island, Victoria, Australia. In ‘Penguin Biology’. (Eds L. S. Davis and J. T. Darby.) pp. 63–84. (Academic Press: San Diego, CA.)

Dann, P., and Norman, F. I. (2006). Population regulation in little penguins (Eudyptula minor): the role of intraspecific competition for nesting sites and food during breeding. Emu 106, 289–296.
Population regulation in little penguins (Eudyptula minor): the role of intraspecific competition for nesting sites and food during breeding.Crossref | GoogleScholarGoogle Scholar |

Dann, P., Norman, F. I., Cullen, J. M., Neira, F. J., and Chiaradia, A. (2000). Mortality and breeding failure of little penguins, Eudyptula minor, in Victoria, 1995–96, following a widespread mortality of pilchard, Sardinops sagax. Marine and Freshwater Research 51, 355–362.
Mortality and breeding failure of little penguins, Eudyptula minor, in Victoria, 1995–96, following a widespread mortality of pilchard, Sardinops sagax.Crossref | GoogleScholarGoogle Scholar |

Dawson, J. (2007). Status of the Endangered Population of Little Penguins Eudyptula minor at Manly. Report to Department of Environment and Climate Change, Sydney, NSW.

Doherty, P. F., Schreiber, E. A., Nichols, J. D., Hines, J. E., Link, W. A., Schenk, G. A., and Schreiber, R. W. (2004). Testing life-history predictions in a long lived seabird: a population matrix approach with improved parameter estimation. Oikos 105, 606–618.
Testing life-history predictions in a long lived seabird: a population matrix approach with improved parameter estimation.Crossref | GoogleScholarGoogle Scholar |

Ellenberg, U., Mattern, T., Seddon, P. J., and Jorquera, G. L. (2006). Physiological and reproductive consequences of human disturbance in Humboldt penguins: the need for species-specific visitor management. Biological Conservation 133, 95–106.
Physiological and reproductive consequences of human disturbance in Humboldt penguins: the need for species-specific visitor management.Crossref | GoogleScholarGoogle Scholar |

Ezard, T., Becker, P., and Coulson, T. (2006). The contributions of age and sex to variation in common tern population growth rate. Journal of Animal Ecology 75, 1379–1386.
The contributions of age and sex to variation in common tern population growth rate.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DC%2BD28ngtFarsQ%3D%3D&md5=18b31133520f9ed2825ded07b2a648a3CAS | 17032370PubMed |

Fortescue, M. (1999). Temporal and spatial variation in breeding success of the little penguin Eudyptula minor on the east coast of Australia. Marine Ornithology 27, 21–28.

Fowler, G. S. (1999). Behavioral and hormonal responses of Magellanic penguins Spheniscus magellanicus to tourism and nest site visitation. Biological Conservation 90, 143–149.
Behavioral and hormonal responses of Magellanic penguins Spheniscus magellanicus to tourism and nest site visitation.Crossref | GoogleScholarGoogle Scholar |

Gaillard, J. M., and Yoccoz, N. G. (2003). Temporal variation in survival of mammals: a case of environmental canalization? Ecology 84, 3294–3306.
Temporal variation in survival of mammals: a case of environmental canalization?Crossref | GoogleScholarGoogle Scholar |

Gales, R. (1987). Growth strategies in blue penguins Eudyptula minor minor. Emu 87, 212–219.
Growth strategies in blue penguins Eudyptula minor minor.Crossref | GoogleScholarGoogle Scholar |

Giese, M. (1996). Effects of human activity on adelie penguin Pygoscelis adeliae breeding success. Biological Conservation 75, 157–164.
Effects of human activity on adelie penguin Pygoscelis adeliae breeding success.Crossref | GoogleScholarGoogle Scholar |

Gilbert, N. (2007). Encounter bay penguin breeding monitoring program 2005–2007. Report to Department for Environment and Heritage, Adelaide.

Gilbert, N. (2010). Encounter bay penguin breeding monitoring program 2009–2010. Report to Department for Environment and Heritage, Adelaide.

Giling, D., Reina, R. D., and Hogg, Z. (2008). Anthropogenic influence on an urban colony of the little penguin Eudyptula minor. Marine and Freshwater Research 59, 647–651.
Anthropogenic influence on an urban colony of the little penguin Eudyptula minor.Crossref | GoogleScholarGoogle Scholar |

Gutowsky, S., Janssen, M. H., Arcese, P., Kyser, T. K., Ethier, D., Wunder, M. B., Bertram, D. F., McFarlane Tranquilla, L., Lougheed, C., and Norris, D. R. (2009). Concurrent declines in nestling diet quality and reproductive success of a threatened seabird over 150 years. Endangered Species Research 9, 247–254.
Concurrent declines in nestling diet quality and reproductive success of a threatened seabird over 150 years.Crossref | GoogleScholarGoogle Scholar |

Harrigan, K. E. (1991). Causes of mortality of little penguins Eudyptula minor in victoria. Emu 91, 273–277.
Causes of mortality of little penguins Eudyptula minor in victoria.Crossref | GoogleScholarGoogle Scholar |

Igual, J., Forero, M., Gomez, T., Orueta, J., and Oro, D. (2006). Rat control and breeding performance in Cory’s shearwater (Calonectris diomedea): effects of poisoning effort and habitat features. Animal Conservation 9, 59–65.
Rat control and breeding performance in Cory’s shearwater (Calonectris diomedea): effects of poisoning effort and habitat features.Crossref | GoogleScholarGoogle Scholar |

Jansen van Renburg, M. (2010). Parasitism, disease and breeding ecology of the little blue penguin (Eudyptula minor) on Tiritiri Matangi Island, New Zealand. M.Sc. Thesis, Massey University, Auckland, New Zealand.

Johannesen, E., Perriman, L., and Steen, H. (2002). The effect of breeding success on nest and colony fidelity in the little penguin (Eudyptula minor) in Otago, New Zealand. Emu 102, 241–247.
The effect of breeding success on nest and colony fidelity in the little penguin (Eudyptula minor) in Otago, New Zealand.Crossref | GoogleScholarGoogle Scholar |

Johannesen, E., Houston, D., and Russell, J. (2003). Increased survival and breeding performance of double breeders in little penguins Eudyptula minor, New Zealand: evidence for individual bird quality? Journal of Avian Biology 34, 198–210.
Increased survival and breeding performance of double breeders in little penguins Eudyptula minor, New Zealand: evidence for individual bird quality?Crossref | GoogleScholarGoogle Scholar |

Jolly, G. (1965). Explicit estimates from capture-recapture data with both death and immigration-stochastic model. Biometrika 52, 225–247.
Explicit estimates from capture-recapture data with both death and immigration-stochastic model.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DyaF2M7ks1WktQ%3D%3D&md5=16cd75bf20e5f1f4bce52d25502b7ef5CAS | 14341276PubMed |

Kemp, A., and Dann, P. (2001). Egg size, incubation periods and hatching success of little penguins, Eudyptula minor. Emu 101, 249–253.
Egg size, incubation periods and hatching success of little penguins, Eudyptula minor.Crossref | GoogleScholarGoogle Scholar |

Klomp, N., Meathrel, C., Wienecke, B., and Wooller, R. (1991). Surface nesting by little penguins on Penguin Island, Western Australia. Emu 91, 190–193.
Surface nesting by little penguins on Penguin Island, Western Australia.Crossref | GoogleScholarGoogle Scholar |

Lack, D. (1954). ‘The natural regulation of animal numbers.’ (Oxford University Press: Oxford, UK.)

Miyazaki, M., and Waas, J. R. (2003). Correlations between body size, defensive behaviour and reproductive success in male little blue penguins Eudyptula minor: implications for female choice. Ibis 145, 98–105.
Correlations between body size, defensive behaviour and reproductive success in male little blue penguins Eudyptula minor: implications for female choice.Crossref | GoogleScholarGoogle Scholar |

Nisbet, I. C. T., and Dann, P. (2009). Reproductive performance of little penguins Eudyptula minor in relation to year, age, pair-bond duration, breeding date and individual quality. Journal of Avian Biology 40, 296–308.
Reproductive performance of little penguins Eudyptula minor in relation to year, age, pair-bond duration, breeding date and individual quality.Crossref | GoogleScholarGoogle Scholar |

Numata, M., Davis, L. S., and Renner, M. (2000). Prolonged foraging trips and egg desertion in little penguins (Eudyptula minor). New Zealand Journal of Zoology 27, 277–289.
Prolonged foraging trips and egg desertion in little penguins (Eudyptula minor).Crossref | GoogleScholarGoogle Scholar |

Numata, M., Davis, L. S., and Renner, M. (2004). Growth and survival of chicks in relation to nest attendance patterns of little penguins (Eudyptula minor) at Oamaru and Motuara Island, New Zealand. New Zealand Journal of Zoology 31, 263–269.
Growth and survival of chicks in relation to nest attendance patterns of little penguins (Eudyptula minor) at Oamaru and Motuara Island, New Zealand.Crossref | GoogleScholarGoogle Scholar |

Overeem, R.L., and Wallis, R. (2003). Little penguin Eudyptula minor at Middle Island, western Victoria: current status. Victorian Naturalist 120, 76–83.

Pascal, M., Lorvelec, O., Bretagnolle, V., and Culioli, J.-M. (2008). Improving the breeding success of a colonial seabird: a cost–benefit comparison of the eradication and control of its rat predator. Endangered Species Research 4, 267–276.
Improving the breeding success of a colonial seabird: a cost–benefit comparison of the eradication and control of its rat predator.Crossref | GoogleScholarGoogle Scholar |

Perriman, L., Houston, D., Steen, H., and Johannesen, E. (2000). Climate fluctuation effects on breeding of blue penguins (Eudyptula minor). New Zealand Journal of Zoology 27, 261–267.
Climate fluctuation effects on breeding of blue penguins (Eudyptula minor).Crossref | GoogleScholarGoogle Scholar |

Pledger, S., and Bullen, L. (1998). Tests for mate and nest fidelity in birds with application to little blue penguins (Eudyptula minor). Biometrics 54, 61–66.
Tests for mate and nest fidelity in birds with application to little blue penguins (Eudyptula minor).Crossref | GoogleScholarGoogle Scholar |

Preston, T. (2008). Water rats as predators of little penguins. The Victorian Naturalist 125, 165–168.

Priddel, D., Carlile, N., and Wheeler, R. (2008). Population size, breeding success and provenance of a mainland colony of little penguins (Eudyptula minor). Emu 108, 35–41.
Population size, breeding success and provenance of a mainland colony of little penguins (Eudyptula minor).Crossref | GoogleScholarGoogle Scholar |

Promislow, D. E. L., and Harvey, P. H. (1990). Living fast and dying young: a comparative analysis of life-history variation among mammals. Journal of Zoology 220, 417–437.
Living fast and dying young: a comparative analysis of life-history variation among mammals.Crossref | GoogleScholarGoogle Scholar |

Reilly, P., and Cullen, J. (1981). The little penguin Eudyptula minor in Victoria, II: breeding. Emu 81, 1–19.
The little penguin Eudyptula minor in Victoria, II: breeding.Crossref | GoogleScholarGoogle Scholar |

Reilly, P., and Cullen, J. (1982). The little penguin Eudyptula minor in Victoria. III. Dispersal of chicks and survival after banding. Emu 82, 137–142.
The little penguin Eudyptula minor in Victoria. III. Dispersal of chicks and survival after banding.Crossref | GoogleScholarGoogle Scholar |

Ricklefs, R. E. (2000). Density dependence, evolutionary optimization, and the diversification of avian life histories. Condor 102, 9–22.
Density dependence, evolutionary optimization, and the diversification of avian life histories.Crossref | GoogleScholarGoogle Scholar |

Rogers, T., Eldershaw, G., and Walraven, E. (1995). Reproductive success of little penguins, Eudyptula minor, on Lion Lsland, New South Wales. Wildlife Research 22, 709–715.
Reproductive success of little penguins, Eudyptula minor, on Lion Lsland, New South Wales.Crossref | GoogleScholarGoogle Scholar |

Sæther, B.-E., and Bakke, Ø. (2000). Avian life history variation and contribution of demographic traits to the population growth rate. Ecology 81, 642–653.
Avian life history variation and contribution of demographic traits to the population growth rate.Crossref | GoogleScholarGoogle Scholar |

Saraux, C., Chiaradia, A., Le Maho, Y., and Ropert-Coudert, Y. (2011a). Everybody needs somebody: unequal parental effort in little penguins. Behavioral Ecology 22, 837–845.
Everybody needs somebody: unequal parental effort in little penguins.Crossref | GoogleScholarGoogle Scholar |

Saraux, C., Robinson-Laverick, S. M., Le Maho, Y., Ropert-Coudert, Y., and Chiaradia, A. (2011b). Plasticity in foraging strategies of inshore birds: how little penguins maintain body reserves while feeding offspring. Ecology 92, 1909–1916.
Plasticity in foraging strategies of inshore birds: how little penguins maintain body reserves while feeding offspring.Crossref | GoogleScholarGoogle Scholar | 22073782PubMed |

Schmidt, K. A. (2003). Nest predation and population declines in Illinois songbirds: a case for mesopredator effects. Conservation Biology 17, 1141–1150.
Nest predation and population declines in Illinois songbirds: a case for mesopredator effects.Crossref | GoogleScholarGoogle Scholar |

Seber, G. A. F. (1965). A note on the multiple-recapture census. Biometrika 52, 249–259.
A note on the multiple-recapture census.Crossref | GoogleScholarGoogle Scholar | 1:STN:280:DyaF2M7ks1Wkug%3D%3D&md5=b1c81531c997d87c8cb3cea77534e4c2CAS |

Sidhu, L. A., Catchpole, E. A., and Dann, P. (2007). Mark-recapture-recovery modeling and age-related survival in little penguins (Eudyptula minor). Auk 124, 815–827.
Mark-recapture-recovery modeling and age-related survival in little penguins (Eudyptula minor).Crossref | GoogleScholarGoogle Scholar |

Stearns, S. C. (1983). The influence of size and phylogeny on patterns of covariation among life-history traits in the mammals. Oikos 41, 173–187.
The influence of size and phylogeny on patterns of covariation among life-history traits in the mammals.Crossref | GoogleScholarGoogle Scholar |

Thibault, J.-C. (1995). Effect of predation by the black rat Rattus rattus on the breeding success of Cory’s shearwater Calonectris diomedea in Corsica. Marine Ornithology 23, 1–10.

Weerheim, M. S., Klomp, N. I., Brunsting, A. M. H., and Komdeur, J. (2003). Population size, breeding habitat and nest site distribution of little penguins (Eudyptula minor) on Montague Island, New South Wales. Wildlife Research 30, 151–157.
Population size, breeding habitat and nest site distribution of little penguins (Eudyptula minor) on Montague Island, New South Wales.Crossref | GoogleScholarGoogle Scholar |

White, G. C., and Burnham, K. P. (1999). Program MARK: survival estimation from populations of marked animals. Bird Study 46, S120–S139.
Program MARK: survival estimation from populations of marked animals.Crossref | GoogleScholarGoogle Scholar |

Wiebkin, A. S. (2010). Little penguins at Troubridge Island – establishing a monitoring program for the future. SARDI Research Report Series number 443, Adelaide.

Wiebkin, A. S. (2011). Conservation management priorities for little penguin populations in Gulf St Vincent. Report to Adelaide and Mount Lofty Ranges Natural Resources Management Board. SARDI Research Report Series number 588, Adelaide.

Wooller, R., Dunlop, J., Klomp, N., Meathrel, C., and Wienecke, B. (1991). Seabird abundance, distribution and breeding patterns in relation to the Leeuwin Current. Journal of the Royal Society of Western Australia 74, 129–132.