The Status of the Catize Egret in South Africa With Notes on the Neighbouring Territories

Siegfried, W. R.

doi:10.1080/00306525.1966.9632711

Cited by 9 publications

(2 citation statements)

References 24 publications

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“…In the last few decades, the Cattle Egret has become a common breeder in many parts of South Africa which were not previously within its range (Siegfried 1966, Hockey et al 2005, Kopij 2008. Range expansion still continues in this region and elsewhere in the world (Kushlan andHefner 2000, Kopij 2008).…”

Section: Introductionmentioning

confidence: 99%

Mortality in South African Cattle Egrets Bubulcus ibis from 1951 to 1987

Kopij

2016

The Ring

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Of 46,160 birds ringed in South African heronries from 1951 through 1987, 481 were subsequently recovered (recovery rate: 1.04%). Most of these birds were ringed in the Western Cape (N = 173), KwaZulu-Natal (N = 142) and Gauteng (N = 106). The age of the recovered birds ranged from 0 to 23 years. Almost two thirds were 0-2 years old, and only 1.2% were 15 years or older. The average age of the recovered birds was 4.9 years (N = 465). The mortality rate was highest in their first and second year (31-36%). Nearly one third of the birds recovered (N = 134) were sick or injured, and 30.6% had been shot. Relatively low mortality, a long life span and relatively low predation pressure may contribute to the great success of the Cattle Egret in colonising various parts of the world. The paper presents the initial state for the likely future evolution of the distribution of the species.

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Section: Introductionmentioning

confidence: 99%

Mortality in South African Cattle Egrets Bubulcus ibis from 1951 to 1987

Kopij

2016

The Ring

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“…Bubulcus ibis is a cosmopolitan bird divided in three subspecies: Bubulcus i. ibis, which occurs in Africa, west and colonies (Kushlan and Hancock 2005). It has a strong colonization and adaptation capacity that has allowed it to colonize the Americas and increase the number of colonies and individuals throughout the world in the last 150 yr (Chapin 1932, Siegfried 1966, Crosby 1972, Kushlan and Hancock 2005.…”

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confidence: 99%

Genetic and paleomodelling evidence of the population expansion of the cattle egretBubulcus ibisin Africa during the climatic oscillations of the Late Pleistocene

Congrains

Carvalho

Miranda

et al. 2016

Journal of Avian Biology

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Increasing aridity during glacial periods produced the retraction of forests and the expansion of arid and semi‐arid environments in Africa, with consequences for birds. Cattle egret Bubulcus ibis is a dispersive species that prefers semi‐arid environments and requires proximity to bodies of water. We expected that climatic oscillations led to the expansion of the range of the cattle egret during arid periods, such as the Last Maximum Glacial (LGM) and contraction of distribution during the Last Interglacial (LIG) period, resulting in contact of populations previously isolated. We investigated this hypothesis by evaluating the genetic structure and population history of 15 cattle egret breeding colonies located in west and South Africa using the mitochondrial DNA (mtDNA) control region, mtDNA ATPase 8 and 6, and an intron of nuclear gene transforming growth factor‐beta 2. Occurrence data and bioclimatic information were used to generate ecological niche models of three periods (present, LGM and LIG). We used the genetic and paleomodelling data to assess the responses of the cattle egret from Africa to the climatic oscillations during the late Pleistocene. Genetic data revealed low levels of genetic differentiation, signs of isolation‐by‐distance, as well as recent increases in effective population size that started during the LGM. The observed low genetic structure may be explained by recent colonization events due to the demographic expansion following the last glacial period and by dispersal capacity of this species. The paleomodels corroborated the expansion during the LGM, and a more restricted potential distribution during the LIG. Our findinds supports the hypothesis that the species range of the cattle egret expanded during arid periods and contracted during wet periods.

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Die Ausbreitung des Kuhreihers,Bubulcus ibis (L.)

Handtke¹,

Mauersberger²

1977

Mitt. Mus. Nat.kd. Berl., Zool. Reihe

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The Status of the Catize Egret in South Africa With Notes on the Neighbouring Territories

Cited by 9 publications

References 24 publications

Mortality in South African Cattle Egrets Bubulcus ibis from 1951 to 1987

Mortality in South African Cattle Egrets Bubulcus ibis from 1951 to 1987

Genetic and paleomodelling evidence of the population expansion of the cattle egretBubulcus ibisin Africa during the climatic oscillations of the Late Pleistocene

Die Ausbreitung des Kuhreihers,Bubulcus ibis (L.)

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