Effects of drift sprays of endosulfan, applied for Tsetse-fly control, on breeding little bee-eaters in Somalia

Douthwaite, R. J.

doi:10.1016/0143-1471(86)90103-0

Cited by 7 publications

(1 citation statement)

References 11 publications

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“…However, sub‐lethal doses of pesticides can cause changes in feeding behaviour (Douthwaite, 1982; Sample, Cooper & Whitmore, 1993) and weight loss (Whitmore, Cooper & Sample, 1993) in birds without causing rapid population declines. Such physiological and behavioural changes can cause reduced reproductive success and may lead to delayed population declines (Douthwaite, 1986; Cooper et al. , 1990; Pascual & Peris, 1992).…”

Section: Discussionmentioning

confidence: 99%

The effects of spraying deltamethrin for tsetse fly control on insectivorous bird populations in the Okavango Delta, Botswana

Pendleton

Baldwin

2007

African Journal of Ecology

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Section: Discussionmentioning

confidence: 99%

The effects of spraying deltamethrin for tsetse fly control on insectivorous bird populations in the Okavango Delta, Botswana

Pendleton

Baldwin

2007

African Journal of Ecology

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Effects of DDT treatments applied for tsetse fly control on White-headed Black Chat (Thamnolaea arnoti) populations in Zimbabwe. Part I: population changes

Douthwaite

1992

Ecotoxicology

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Surveys of relative abundance were made in DDT-treated and untreated woodland in NW Zimbabwe using playback of tape recorded song. Chats were common in old stands of untreated mopane (Colophospermum mopane) and miombo (Brachystegia spp.) woodland but were less common in suitable habitat which had been sprayed with DDT at the rate of about 200 g ha(-1) for tsetse fly control. Population changes in the Siabuwa Communal Area were related to spraying operations over 3.5 years from July 1987 to January 1991. In the 1987-89 treatment area, numbers fell by 88% over 33 months following first treatment, mainly due to a reduction in occupied sites. Groups were smaller and single sex groups more frequent in treated areas compared with an adjacent unsprayed area. Numbers in the unsprayed area fell by 13% over the same period. Total numbers and number of groups at the edge and just within the treated area increased temporarily after each of the first two sprays. At the end of the study, numbers in the 1987 and 1987-89 treatment areas were increasing, and isolated groups were found in the 1984-89 treatment area. In a second study area, a further treatment of DDT, one year after the first, was followed by a 74% decline in numbers over nine months. It is concluded that tsetse spraying operations have had a severe, and possibly prolonged, impact on the White-headed Black Chat population of NW Zimbabwe.

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Breeding Biology of Rainbow Bee-Eaters (Merops Ornatus): A Migratory, Colonial, Cooperative Bird

Boland

2004

The Auk

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The breeding biology of Rainbow Bee-eaters (Merops ornatus) was studied between 1997 and 2001 in southeast Queensland, Australia. Rainbow Bee-eaters are unusual in that they combine migration and coloniality with cooperative breeding. Birds migrate from islands north of Australia to build nests either solitarily or in colonies containing ≤50 active nests that are attended by socially monogamous pairs or trios (45% of nests). Nesting was essentially forsaken during very dry seasons, whereas hatching success was reduced in wet seasons. Incubation period varied in duration, with chicks emerging 22–31 days after incubation commenced. Eggs hatched either synchronously or, more commonly, asynchronously (88% of clutches), with each chick emerging usually 0–3 days after the previous hatchling in the nest. Asynchronous hatching typically led to a marked size hierarchy within the brood, facilitating starvation of 22% of nestlings that had avoided nest disasters, such as predation or flooding. Duration of the nestling period was also variable, with chicks requiring a further 24–36 days to fledge. Nest predation by native predators—monitor lizards (Varanus varius) and yellow-footed antechinus (Antechinus flavipes)—was relatively low, affecting 10% of nests. In contrast, predation by two introduced species—dingoes (Canis familiaris dingo) and, in particular, cane toads (Bufo marinus)—was extreme, terminating 49% of all nests.

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Effects of drift sprays of endosulfan, applied for Tsetse-fly control, on breeding little bee-eaters in Somalia

Cited by 7 publications

References 11 publications

The effects of spraying deltamethrin for tsetse fly control on insectivorous bird populations in the Okavango Delta, Botswana

The effects of spraying deltamethrin for tsetse fly control on insectivorous bird populations in the Okavango Delta, Botswana

Effects of DDT treatments applied for tsetse fly control on White-headed Black Chat (Thamnolaea arnoti) populations in Zimbabwe. Part I: population changes

Breeding Biology of Rainbow Bee-Eaters (Merops Ornatus): A Migratory, Colonial, Cooperative Bird

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