Correlates of behavioural dominance in mallards and American black ducks

Hoysak, Drew J.; Ankney, Davison

doi:10.1006/anbe.1996.0038

Cited by 25 publications

(22 citation statements)

References 40 publications

(35 reference statements)

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“…The results of this study support the findings of Traut and Hostetler (2003); waterbird behaviours are associated with shoreline development in urban ecosystems. Our study supports previous findings that interspecific variation exists in behavioural responses to habitat development (Hoysak and Ankney 1996;Hostelter and Holling 2000;Traut and Hostetler 2003;Beale and Monaghan 2004;Webb and Blumstein 2005). Since the species observed in this study displayed interspecific and individual variation in the levels of tolerance to human presence and shoreline development, undeveloped areas may provide essential habitat for species that are sensitive to disturbance, such as hooded merganser.…”

Section: Conclusion and Extensionssupporting

confidence: 90%

Assessing the effect of developed habitat on waterbird behaviour in an urban riparian system in Ottawa, Canada

2007

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Waterbird species were used to assess the consequences of developed habitat on wildlife behaviour in an urban riparian system along the Rideau River in Ottawa, Canada. Fourteen developed sites and 14 undeveloped sites were surveyed from October 2004 to February 2005. Each site was approached on foot and the first observed behaviour (i.e., fleeing, foraging, resting or swimming) of each individual was recorded. A total of 10,604 behavioural observations were made across 12 taxa. Overall, the fleeing behaviour was observed more often at undeveloped sites. Foraging, resting and swimming behaviours were observed more often at developed sites. We found that seven species fled more often at undeveloped sites, including hooded merganser. This species was also more abundant at undeveloped sites, suggesting that hooded merganser may be more sensitive to anthropogenic disturbance in urban environments than other species that are habituated toward humans. For sensitive species, undeveloped shoreline may serve as a refuge from human disturbance in urban ecosystems.

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Section: Conclusion and Extensionssupporting

confidence: 90%

Assessing the effect of developed habitat on waterbird behaviour in an urban riparian system in Ottawa, Canada

2007

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“…tive exclusion of American Black Duck pairs from fertile wetlands (Merendino and Ankney 1994) have been suggested. Conversely, other studies have refuted earlier assumptions and provided contradictory evidence for each scenario (e.g., Conroy et al 1989, D'Eon et al 1994, Francis et al 1998, Hoysak and Ankney 1996, Petrie et al 2000, Seymour 1992). Much of the interest stemmed from the potential loss of American Black Ducks as a distinct species if the population decline and hybrid?…”

Section: Introductionmentioning

confidence: 94%

Changes in Numbers of Wintering American Black Ducks and Mallards in Urban Cape Breton Island, Nova Scotia

McCorquodale¹,

Knapton²

2003

Northeastern Naturalist

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“…This may result in hybridization (Randler 2002, e.g. Potts 1988, Rhymer et al . 1994, Hoysak & Ankney 1996, Hughes 1996, Rhymer & Simberloff 1996, Negro et al .…”

mentioning

confidence: 99%

Comparison of migratory tendency in European Quail Coturnix c. coturnix, domestic Japanese Quail Coturnix c. japonica and their hybrids

Derégnaucourt

Guyomarc’H

Belhamra

2004

Ibis

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International audienceSince the 1970s, the decline of the occidental populations of European Quail Coturnix c. coturnix, a partial migrant Galliform species, has driven the release of domestic Japanese Quail Coturnix c. japonica into the wild as game birds. Recent experiments suggest that reproductive isolating mechanisms have not developed to prevent hybridization between European and Japanese Quail. To assess the potential impact of hybridization between the subspecies in the wild, this study aims to compare the migratory characteristics of captive European Quail, domestic Japanese Quail, F1 hybrids and a backcross. In a laboratory experiment, birds hatched in summer and reared under a natural photoperiod were transferred during winter to an artificial photoperiod (light–dark) of 14 : 10 h. Behavioural (migratory restlessness, crowing activity in males) and physiological (sexual development, fat accumulation, body mass) measures were recorded. Domestic Japanese Quail showed no migratory tendency in response to the increased day length. F1 hybrids showed rapid sexual development and few of them exhibited the typical profile of a migrant bird. Backcrosses showed great variation in their response, comparable with those of the European Quail. Therefore, hybridization could lead to an increased proportion of quail showing sedentary rather than migratory behaviour. Furthermore, hybrids that do show migratory behaviour have the potential to facilitate Japanese gene flow into areas where the release of domestic Quail as game birds is not yet practised

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Correlates of behavioural dominance in mallards and American black ducks

Cited by 25 publications

References 40 publications

Assessing the effect of developed habitat on waterbird behaviour in an urban riparian system in Ottawa, Canada

Assessing the effect of developed habitat on waterbird behaviour in an urban riparian system in Ottawa, Canada

Changes in Numbers of Wintering American Black Ducks and Mallards in Urban Cape Breton Island, Nova Scotia

Comparison of migratory tendency in European Quail Coturnix c. coturnix, domestic Japanese Quail Coturnix c. japonica and their hybrids

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