Incubation and brooding rhythm of the cape petrel Daption capense at
and compared with data from two other areas. There was an inverse relationship between the mean foraging trip length and mean peak weight of chicks. Variation in shift length throughout incubation resulted from a combination of seasonal effects (food supply) and behavioural adjustment to hatching. T...
Main Author: | |
---|---|
Other Authors: | |
Format: | Text |
Language: | English |
Published: |
1998
|
Subjects: | |
Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.9136 http://www.zoologie.upol.cz/Weidinger-Ibis-1998.pdf |
id |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.571.9136 |
---|---|
record_format |
openpolar |
spelling |
ftciteseerx:oai:CiteSeerX.psu:10.1.1.571.9136 2023-05-15T15:51:52+02:00 Incubation and brooding rhythm of the cape petrel Daption capense at Karel Weidinger The Pennsylvania State University CiteSeerX Archives 1998 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.9136 http://www.zoologie.upol.cz/Weidinger-Ibis-1998.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.9136 http://www.zoologie.upol.cz/Weidinger-Ibis-1998.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.zoologie.upol.cz/Weidinger-Ibis-1998.pdf text 1998 ftciteseerx 2016-01-08T12:34:22Z and compared with data from two other areas. There was an inverse relationship between the mean foraging trip length and mean peak weight of chicks. Variation in shift length throughout incubation resulted from a combination of seasonal effects (food supply) and behavioural adjustment to hatching. The length of the last incubation shift was indepen-dent of its number but decreased with date of initiation. The average weight of nest-attending birds increased steadily during the incubation period and at the same rate in both sexes. Females attained seasonal peak body-weight before the egg hatched, whereas males just recovered their pre-breeding weight. Males took on a slightly larger share of incubation (52%, range 40-63%) and invested more time in mutual nest attendance. Length of foraging trips varied consistently in pairs and individuals, its repeatability being twice as high in females as in males. The incubation performance of individual females (length of the first and an average foraging trip) was correlated with the size of the egg they had laid and also to subsequent chick growth and fledging success. There was a tendency in successful pairs to spend more time together at the nest and to have shorter foraging trips. I suggest that variation in breeding performance among pairs was mainly Text Cape Petrel Daption capense Unknown Dent ENVELOPE(140.050,140.050,-66.649,-66.649) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
and compared with data from two other areas. There was an inverse relationship between the mean foraging trip length and mean peak weight of chicks. Variation in shift length throughout incubation resulted from a combination of seasonal effects (food supply) and behavioural adjustment to hatching. The length of the last incubation shift was indepen-dent of its number but decreased with date of initiation. The average weight of nest-attending birds increased steadily during the incubation period and at the same rate in both sexes. Females attained seasonal peak body-weight before the egg hatched, whereas males just recovered their pre-breeding weight. Males took on a slightly larger share of incubation (52%, range 40-63%) and invested more time in mutual nest attendance. Length of foraging trips varied consistently in pairs and individuals, its repeatability being twice as high in females as in males. The incubation performance of individual females (length of the first and an average foraging trip) was correlated with the size of the egg they had laid and also to subsequent chick growth and fledging success. There was a tendency in successful pairs to spend more time together at the nest and to have shorter foraging trips. I suggest that variation in breeding performance among pairs was mainly |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Karel Weidinger |
spellingShingle |
Karel Weidinger Incubation and brooding rhythm of the cape petrel Daption capense at |
author_facet |
Karel Weidinger |
author_sort |
Karel Weidinger |
title |
Incubation and brooding rhythm of the cape petrel Daption capense at |
title_short |
Incubation and brooding rhythm of the cape petrel Daption capense at |
title_full |
Incubation and brooding rhythm of the cape petrel Daption capense at |
title_fullStr |
Incubation and brooding rhythm of the cape petrel Daption capense at |
title_full_unstemmed |
Incubation and brooding rhythm of the cape petrel Daption capense at |
title_sort |
incubation and brooding rhythm of the cape petrel daption capense at |
publishDate |
1998 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.9136 http://www.zoologie.upol.cz/Weidinger-Ibis-1998.pdf |
long_lat |
ENVELOPE(140.050,140.050,-66.649,-66.649) |
geographic |
Dent |
geographic_facet |
Dent |
genre |
Cape Petrel Daption capense |
genre_facet |
Cape Petrel Daption capense |
op_source |
http://www.zoologie.upol.cz/Weidinger-Ibis-1998.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.571.9136 http://www.zoologie.upol.cz/Weidinger-Ibis-1998.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766387260562866176 |