Temperature-induced shifts in selective pressure at a critical developmental transition
Selective mortality within a population, based on the phenotype of individuals, is the foundation of the theory of natural selection. We examined temperature-induced shifts in the relationships among early life history traits and survivorship over the embryonic and larval stages of a tropical damsel...
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ftcharlesdarwin:oai:espace.cdu.edu.au:cdu:5083 2023-09-05T13:18:13+02:00 Temperature-induced shifts in selective pressure at a critical developmental transition Gagliano, M McCormick, MI Meekan, MG 2007-01-01 http://espace.cdu.edu.au/view/cdu:5083 unknown Springer bigger is better hypothesis early life history traits egg size selective mortality coral reef fish CORAL-REEF FISH EGG-SIZE ATLANTIC SALMON MARINE FISH LARVAL SIZE GROWTH RECRUITMENT PREDATION QUALITY FITNESS Journal Article 2007 ftcharlesdarwin 2023-08-21T22:22:41Z Selective mortality within a population, based on the phenotype of individuals, is the foundation of the theory of natural selection. We examined temperature-induced shifts in the relationships among early life history traits and survivorship over the embryonic and larval stages of a tropical damselfish, Pomacentrus amboinensis. Our experiments show that temperature determines the intensity of selective mortality, and that this changes with ontogeny. The size of energy stores determined survival through to hatching, after which egg size became a good indicator of fitness as predicted by theoretical models. Yet, the benefits associated with egg size were not uniform among test temperatures. Initial egg size positively influenced larval survival at control temperature (29 degrees C). However, this embryonic trait had no effect on post-hatching longevity of individuals reared at the higher (31 degrees C) and lower (25 degrees C) end of the temperature range. Overall, our findings indicate that the outcome of selective mortality is strongly dependent on the interaction between environment conditions and intrinsic developmental schedules. Article in Journal/Newspaper Atlantic salmon Charles Darwin University: CDU eSpace |
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Open Polar |
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Charles Darwin University: CDU eSpace |
op_collection_id |
ftcharlesdarwin |
language |
unknown |
topic |
bigger is better hypothesis early life history traits egg size selective mortality coral reef fish CORAL-REEF FISH EGG-SIZE ATLANTIC SALMON MARINE FISH LARVAL SIZE GROWTH RECRUITMENT PREDATION QUALITY FITNESS |
spellingShingle |
bigger is better hypothesis early life history traits egg size selective mortality coral reef fish CORAL-REEF FISH EGG-SIZE ATLANTIC SALMON MARINE FISH LARVAL SIZE GROWTH RECRUITMENT PREDATION QUALITY FITNESS Gagliano, M McCormick, MI Meekan, MG Temperature-induced shifts in selective pressure at a critical developmental transition |
topic_facet |
bigger is better hypothesis early life history traits egg size selective mortality coral reef fish CORAL-REEF FISH EGG-SIZE ATLANTIC SALMON MARINE FISH LARVAL SIZE GROWTH RECRUITMENT PREDATION QUALITY FITNESS |
description |
Selective mortality within a population, based on the phenotype of individuals, is the foundation of the theory of natural selection. We examined temperature-induced shifts in the relationships among early life history traits and survivorship over the embryonic and larval stages of a tropical damselfish, Pomacentrus amboinensis. Our experiments show that temperature determines the intensity of selective mortality, and that this changes with ontogeny. The size of energy stores determined survival through to hatching, after which egg size became a good indicator of fitness as predicted by theoretical models. Yet, the benefits associated with egg size were not uniform among test temperatures. Initial egg size positively influenced larval survival at control temperature (29 degrees C). However, this embryonic trait had no effect on post-hatching longevity of individuals reared at the higher (31 degrees C) and lower (25 degrees C) end of the temperature range. Overall, our findings indicate that the outcome of selective mortality is strongly dependent on the interaction between environment conditions and intrinsic developmental schedules. |
format |
Article in Journal/Newspaper |
author |
Gagliano, M McCormick, MI Meekan, MG |
author_facet |
Gagliano, M McCormick, MI Meekan, MG |
author_sort |
Gagliano, M |
title |
Temperature-induced shifts in selective pressure at a critical developmental transition |
title_short |
Temperature-induced shifts in selective pressure at a critical developmental transition |
title_full |
Temperature-induced shifts in selective pressure at a critical developmental transition |
title_fullStr |
Temperature-induced shifts in selective pressure at a critical developmental transition |
title_full_unstemmed |
Temperature-induced shifts in selective pressure at a critical developmental transition |
title_sort |
temperature-induced shifts in selective pressure at a critical developmental transition |
publisher |
Springer |
publishDate |
2007 |
url |
http://espace.cdu.edu.au/view/cdu:5083 |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
_version_ |
1776199226534920192 |