Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird
Earlier offspring mortality before independence saves resources for kin, which should be more beneficial when food is short. Using 24 years of data on age-specific common tern (Sterna hirundo) chick mortality, best described by the Gompertz function, and estimates of energy consumption per age of mo...
Published in: | The American Naturalist |
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Language: | English |
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Online Access: | https://hdl.handle.net/11370/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 https://research.rug.nl/en/publications/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 https://doi.org/10.1086/702304 https://pure.rug.nl/ws/files/82275554/702304.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 2024-06-02T08:05:28+00:00 Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird Vedder, Oscar Zhang, He Daenhardt, Andreas Bouwhuis, Sandra 2019-04 application/pdf https://hdl.handle.net/11370/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 https://research.rug.nl/en/publications/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 https://doi.org/10.1086/702304 https://pure.rug.nl/ws/files/82275554/702304.pdf eng eng https://research.rug.nl/en/publications/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 info:eu-repo/semantics/openAccess Vedder , O , Zhang , H , Daenhardt , A & Bouwhuis , S 2019 , ' Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird ' , American Naturalist , vol. 193 , no. 4 , pp. 588-597 . https://doi.org/10.1086/702304 aging brood reduction brood survival maternal effects parent-offspring conflict sibling competition EGG-SIZE VARIATION HATCHING ASYNCHRONY COMMON TERNS PARENTAL INVESTMENT STERNA-HIRUNDO CHICK SURVIVAL TESTOSTERONE CANALIZATION SENESCENCE article 2019 ftunigroningenpu https://doi.org/10.1086/702304 2024-05-07T20:36:23Z Earlier offspring mortality before independence saves resources for kin, which should be more beneficial when food is short. Using 24 years of data on age-specific common tern (Sterna hirundo) chick mortality, best described by the Gompertz function, and estimates of energy consumption per age of mortality, we investigated how energy wasted on nonfledged chicks depends on brood size, hatching order, and annual abundance of herring (Clupea harengus), the main food source. We found mortality directly after hatching (Gompertz baseline mortality) to be high and to increase with decreasing herring abundance. Mortality declined with age at a rate relatively insensitive to herring abundance. The sensitivity of baseline mortality to herring abundance reduced energy wasted on nonfledged chicks when herring was in short supply. Among chicks that did not fledge, last-hatched chicks were less costly than earlier-hatched chicks because of their earlier mortality. However, per hatchling produced, the least energy was wasted on chicks without siblings because their baseline mortality was most sensitive to herring abundance. We suggest that earlier mortality of offspring when food is short facilitates economic adjustment of posthatching parental investment to food abundance but that such economic brood reduction may be constrained by sibling competition. Article in Journal/Newspaper Common tern Sterna hirundo University of Groningen research database The American Naturalist 193 4 588 597 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
aging brood reduction brood survival maternal effects parent-offspring conflict sibling competition EGG-SIZE VARIATION HATCHING ASYNCHRONY COMMON TERNS PARENTAL INVESTMENT STERNA-HIRUNDO CHICK SURVIVAL TESTOSTERONE CANALIZATION SENESCENCE |
spellingShingle |
aging brood reduction brood survival maternal effects parent-offspring conflict sibling competition EGG-SIZE VARIATION HATCHING ASYNCHRONY COMMON TERNS PARENTAL INVESTMENT STERNA-HIRUNDO CHICK SURVIVAL TESTOSTERONE CANALIZATION SENESCENCE Vedder, Oscar Zhang, He Daenhardt, Andreas Bouwhuis, Sandra Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird |
topic_facet |
aging brood reduction brood survival maternal effects parent-offspring conflict sibling competition EGG-SIZE VARIATION HATCHING ASYNCHRONY COMMON TERNS PARENTAL INVESTMENT STERNA-HIRUNDO CHICK SURVIVAL TESTOSTERONE CANALIZATION SENESCENCE |
description |
Earlier offspring mortality before independence saves resources for kin, which should be more beneficial when food is short. Using 24 years of data on age-specific common tern (Sterna hirundo) chick mortality, best described by the Gompertz function, and estimates of energy consumption per age of mortality, we investigated how energy wasted on nonfledged chicks depends on brood size, hatching order, and annual abundance of herring (Clupea harengus), the main food source. We found mortality directly after hatching (Gompertz baseline mortality) to be high and to increase with decreasing herring abundance. Mortality declined with age at a rate relatively insensitive to herring abundance. The sensitivity of baseline mortality to herring abundance reduced energy wasted on nonfledged chicks when herring was in short supply. Among chicks that did not fledge, last-hatched chicks were less costly than earlier-hatched chicks because of their earlier mortality. However, per hatchling produced, the least energy was wasted on chicks without siblings because their baseline mortality was most sensitive to herring abundance. We suggest that earlier mortality of offspring when food is short facilitates economic adjustment of posthatching parental investment to food abundance but that such economic brood reduction may be constrained by sibling competition. |
format |
Article in Journal/Newspaper |
author |
Vedder, Oscar Zhang, He Daenhardt, Andreas Bouwhuis, Sandra |
author_facet |
Vedder, Oscar Zhang, He Daenhardt, Andreas Bouwhuis, Sandra |
author_sort |
Vedder, Oscar |
title |
Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird |
title_short |
Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird |
title_full |
Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird |
title_fullStr |
Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird |
title_full_unstemmed |
Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird |
title_sort |
age-specific offspring mortality economically tracks food abundance in a piscivorous seabird |
publishDate |
2019 |
url |
https://hdl.handle.net/11370/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 https://research.rug.nl/en/publications/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 https://doi.org/10.1086/702304 https://pure.rug.nl/ws/files/82275554/702304.pdf |
genre |
Common tern Sterna hirundo |
genre_facet |
Common tern Sterna hirundo |
op_source |
Vedder , O , Zhang , H , Daenhardt , A & Bouwhuis , S 2019 , ' Age-specific offspring mortality economically tracks food abundance in a piscivorous seabird ' , American Naturalist , vol. 193 , no. 4 , pp. 588-597 . https://doi.org/10.1086/702304 |
op_relation |
https://research.rug.nl/en/publications/bbe3abb4-b2fb-47fb-9a0b-34a832126e08 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1086/702304 |
container_title |
The American Naturalist |
container_volume |
193 |
container_issue |
4 |
container_start_page |
588 |
op_container_end_page |
597 |
_version_ |
1800750280009056256 |