Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica
Understanding the factors that contribute to or limit reproductive success is a fundamental objective of the field of ecology, providing insight into the ways ecosystems function and facilitating better management of natural resources. Behaviors that benefit offspring often increase costs to parents...
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ftoregonstate:ir.library.oregonstate.edu:2b88qg24s 2024-04-21T07:52:35+00:00 Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica Jennings, Scott Dugger, Katie M. Lyons, Donald Ciannelli, Lorenzo Fisheries and Wildlife Oregon State University. Graduate School https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/2b88qg24s English [eng] eng unknown Oregon State University https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/2b88qg24s All rights reserved Adélie penguin -- Antarctica -- Crozier Cape Cape -- Growth Cape -- Reproduction Masters Thesis ftoregonstate 2024-03-28T01:30:16Z Understanding the factors that contribute to or limit reproductive success is a fundamental objective of the field of ecology, providing insight into the ways ecosystems function and facilitating better management of natural resources. Behaviors that benefit offspring often increase costs to parents, and thus parents must adjust their level of investment under different conditions to maximize their fitness. Investigating the ways in which individual animals vary parental investment in response to changing environmental conditions is critical to predicting population responses to natural or anthropogenic changes in environmental conditions. I studied the relationships between provisioning, growth, and survival of Adélie Penguins at a very large, high latitude breeding colony where intraspecific competition for food is thought to limit reproductive rates and colony growth through density dependent processes. I measured three aspects of provisioning, which previous research has shown or suggested might represent variation in parental investment, with increased presumed benefits to chicks coming at an energetic cost to parents. These measurements of parental provisioning effort included: 1) the overall amount of food delivered; 2) the type of food delivered; and 3) the frequency of food delivery. I measured mass and skeletal growth, determined chick sex via molecular methods, and evaluated daily survival probability using quantitative methods which allowed for imperfect resighting probability. I collected data during two breeding seasons, one of which appeared to be relatively typical in terms of growth rates and breeding success (Austral summer of 2012-13; "2012"), and one characterized by apparent food limitation and depressed chick growth rates and reproductive success (Austral summer of 2013-14; "2013"). I compared provisioning, growth and survival at the level of individual penguin families in order to gain a more direct perspective of how trade-offs in parental investment may impact offspring growth and ... Master Thesis Antarc* Antarctica High Latitude Breeding Ross Island ScholarsArchive@OSU (Oregon State University) |
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English unknown |
topic |
Adélie penguin -- Antarctica -- Crozier Cape Cape -- Growth Cape -- Reproduction |
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Adélie penguin -- Antarctica -- Crozier Cape Cape -- Growth Cape -- Reproduction Jennings, Scott Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica |
topic_facet |
Adélie penguin -- Antarctica -- Crozier Cape Cape -- Growth Cape -- Reproduction |
description |
Understanding the factors that contribute to or limit reproductive success is a fundamental objective of the field of ecology, providing insight into the ways ecosystems function and facilitating better management of natural resources. Behaviors that benefit offspring often increase costs to parents, and thus parents must adjust their level of investment under different conditions to maximize their fitness. Investigating the ways in which individual animals vary parental investment in response to changing environmental conditions is critical to predicting population responses to natural or anthropogenic changes in environmental conditions. I studied the relationships between provisioning, growth, and survival of Adélie Penguins at a very large, high latitude breeding colony where intraspecific competition for food is thought to limit reproductive rates and colony growth through density dependent processes. I measured three aspects of provisioning, which previous research has shown or suggested might represent variation in parental investment, with increased presumed benefits to chicks coming at an energetic cost to parents. These measurements of parental provisioning effort included: 1) the overall amount of food delivered; 2) the type of food delivered; and 3) the frequency of food delivery. I measured mass and skeletal growth, determined chick sex via molecular methods, and evaluated daily survival probability using quantitative methods which allowed for imperfect resighting probability. I collected data during two breeding seasons, one of which appeared to be relatively typical in terms of growth rates and breeding success (Austral summer of 2012-13; "2012"), and one characterized by apparent food limitation and depressed chick growth rates and reproductive success (Austral summer of 2013-14; "2013"). I compared provisioning, growth and survival at the level of individual penguin families in order to gain a more direct perspective of how trade-offs in parental investment may impact offspring growth and ... |
author2 |
Dugger, Katie M. Lyons, Donald Ciannelli, Lorenzo Fisheries and Wildlife Oregon State University. Graduate School |
format |
Master Thesis |
author |
Jennings, Scott |
author_facet |
Jennings, Scott |
author_sort |
Jennings, Scott |
title |
Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica |
title_short |
Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica |
title_full |
Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica |
title_fullStr |
Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica |
title_full_unstemmed |
Provisioning, growth and survival of Adélie penguin chicks at Cape Crozier, Ross Island, Antarctica |
title_sort |
provisioning, growth and survival of adélie penguin chicks at cape crozier, ross island, antarctica |
publisher |
Oregon State University |
url |
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/2b88qg24s |
genre |
Antarc* Antarctica High Latitude Breeding Ross Island |
genre_facet |
Antarc* Antarctica High Latitude Breeding Ross Island |
op_relation |
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/2b88qg24s |
op_rights |
All rights reserved |
_version_ |
1796935813168103424 |