Reproductive behaviour and polyandry in a small insular population of spotted sandpipers in Newfoundland
Thesis (M.Sc.)--Memorial University of Newfoundland, 1985. Psychology Bibliography: leaves 81-86. A small insular population of nesting Spotted Sandpipers (Actitis macularia), estimated at 38-45 individuals, was studied during the summers of 1979 and 1980. Daily observations were wade from late May...
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ftmemorialunivdc:oai:collections.mun.ca:theses2/56901 2023-05-15T17:23:30+02:00 Reproductive behaviour and polyandry in a small insular population of spotted sandpipers in Newfoundland Cottrell, Paul Keith Memorial University of Newfoundland. Dept. of Psychology 1985 viii, 88 leaves : ill., maps. Image/jpeg; Application/pdf http://collections.mun.ca/cdm/ref/collection/theses2/id/56901 Eng eng Electronic Theses and Dissertations (16.35 MB) -- http://collections.mun.ca/PDFs/theses/Cottrell_PaulKeith.pdf 75352500 http://collections.mun.ca/cdm/ref/collection/theses2/id/56901 The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries Sandpipers Birds--Breeding Text Electronic thesis or dissertation 1985 ftmemorialunivdc 2015-08-06T19:16:35Z Thesis (M.Sc.)--Memorial University of Newfoundland, 1985. Psychology Bibliography: leaves 81-86. A small insular population of nesting Spotted Sandpipers (Actitis macularia), estimated at 38-45 individuals, was studied during the summers of 1979 and 1980. Daily observations were wade from late May when birds first arrived through mid-July when most eggs had hatched. Some individuals were colour banded or otherwise marked. During the two seasons 31 nests were located and histories resulting from daily observations at these nests are summarized. Contrary to reports of some researchers (e.g. Oring & Knudson 1972), perceived size differences and plumage markings in this population did not allow reliable determination of sex in the field. Extensive observations were made at nests where one or both individuals were marked to determine whether one or both pair members participated in clutch and brood tending activities. Marked individuals were also followed when off the nest to assess use of feeding areas. Of 14 marked females, two were known to mate with multiple males and some details of these relationships are presented. Aggression was rare and seemed to occur primarily in situations where existing pair relationships were challenged or in instances of "mate defense." Territorial behaviour by males and females was not apparent and overlapping feeding areas were observed. Theoretical arguments which suggest selective pressures for incubation and brood tending by one member of a breeding pair are reviewed and their relevance to the Spotted Sandpiper mating system are discussed. Thesis Newfoundland studies University of Newfoundland Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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Memorial University of Newfoundland: Digital Archives Initiative (DAI) |
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English |
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Sandpipers Birds--Breeding |
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Sandpipers Birds--Breeding Cottrell, Paul Keith Reproductive behaviour and polyandry in a small insular population of spotted sandpipers in Newfoundland |
topic_facet |
Sandpipers Birds--Breeding |
description |
Thesis (M.Sc.)--Memorial University of Newfoundland, 1985. Psychology Bibliography: leaves 81-86. A small insular population of nesting Spotted Sandpipers (Actitis macularia), estimated at 38-45 individuals, was studied during the summers of 1979 and 1980. Daily observations were wade from late May when birds first arrived through mid-July when most eggs had hatched. Some individuals were colour banded or otherwise marked. During the two seasons 31 nests were located and histories resulting from daily observations at these nests are summarized. Contrary to reports of some researchers (e.g. Oring & Knudson 1972), perceived size differences and plumage markings in this population did not allow reliable determination of sex in the field. Extensive observations were made at nests where one or both individuals were marked to determine whether one or both pair members participated in clutch and brood tending activities. Marked individuals were also followed when off the nest to assess use of feeding areas. Of 14 marked females, two were known to mate with multiple males and some details of these relationships are presented. Aggression was rare and seemed to occur primarily in situations where existing pair relationships were challenged or in instances of "mate defense." Territorial behaviour by males and females was not apparent and overlapping feeding areas were observed. Theoretical arguments which suggest selective pressures for incubation and brood tending by one member of a breeding pair are reviewed and their relevance to the Spotted Sandpiper mating system are discussed. |
author2 |
Memorial University of Newfoundland. Dept. of Psychology |
format |
Thesis |
author |
Cottrell, Paul Keith |
author_facet |
Cottrell, Paul Keith |
author_sort |
Cottrell, Paul Keith |
title |
Reproductive behaviour and polyandry in a small insular population of spotted sandpipers in Newfoundland |
title_short |
Reproductive behaviour and polyandry in a small insular population of spotted sandpipers in Newfoundland |
title_full |
Reproductive behaviour and polyandry in a small insular population of spotted sandpipers in Newfoundland |
title_fullStr |
Reproductive behaviour and polyandry in a small insular population of spotted sandpipers in Newfoundland |
title_full_unstemmed |
Reproductive behaviour and polyandry in a small insular population of spotted sandpipers in Newfoundland |
title_sort |
reproductive behaviour and polyandry in a small insular population of spotted sandpipers in newfoundland |
publishDate |
1985 |
url |
http://collections.mun.ca/cdm/ref/collection/theses2/id/56901 |
genre |
Newfoundland studies University of Newfoundland |
genre_facet |
Newfoundland studies University of Newfoundland |
op_source |
Paper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries |
op_relation |
Electronic Theses and Dissertations (16.35 MB) -- http://collections.mun.ca/PDFs/theses/Cottrell_PaulKeith.pdf 75352500 http://collections.mun.ca/cdm/ref/collection/theses2/id/56901 |
op_rights |
The author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission. |
_version_ |
1766112826401751040 |