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Abstract
Aim Our aim was to evaluate the role of ecological and life-history factors in shaping global variation in offspring size in a marine clade with a diverse range of parental care behaviours.
Location Global.
Time period Data sourced from literature published from 1953 until 2019. Major taxa studied Marine teleost fishes.
Methods We compiled a species-level dataset of egg and hatch size for 1,639 species of marine fish across 45 orders. We used Bayesian phylogenetic mixed models to evaluate the relationship between offspring size and environmental factors (i.e., mean temperature, chlorophyll-a and dissolved oxygen content together with their annual variation), as well as latitude, reproductive strategy, parental body size and fecundity. We also tested long-standing hypotheses about the co-evolution of offspring size and the presence of parental care in BayesTraits.
Results After controlling for parental body size and phylogenetic history, we find that increased egg size is associated with colder and oxygen-rich waters, while hatch size further depends on food supply and the reproductive strategy exhibited by the species. Irrespective of the initial investment in egg size, species with parental care or demersal egg development yield larger hatchlings compared to pelagic spawners. We also demonstrate that hatch size has co-evolved with advanced forms of care in association with parental body but fail to find a relationship with other types of care.
Main conclusions Our study shows that parental care behaviours, together with environmental context, influence the evolution of classic life-history trade-offs on a global scale. While the initial investment in eggs is driven primarily by temperature and oxygen content, hatch size also reflects the impact of care an offspring has received throughout development. In support of the 'offspring-first' hypothesis, we find that an increase in hatch size drives the evolution of advanced care provision.
Location Global.
Time period Data sourced from literature published from 1953 until 2019. Major taxa studied Marine teleost fishes.
Methods We compiled a species-level dataset of egg and hatch size for 1,639 species of marine fish across 45 orders. We used Bayesian phylogenetic mixed models to evaluate the relationship between offspring size and environmental factors (i.e., mean temperature, chlorophyll-a and dissolved oxygen content together with their annual variation), as well as latitude, reproductive strategy, parental body size and fecundity. We also tested long-standing hypotheses about the co-evolution of offspring size and the presence of parental care in BayesTraits.
Results After controlling for parental body size and phylogenetic history, we find that increased egg size is associated with colder and oxygen-rich waters, while hatch size further depends on food supply and the reproductive strategy exhibited by the species. Irrespective of the initial investment in egg size, species with parental care or demersal egg development yield larger hatchlings compared to pelagic spawners. We also demonstrate that hatch size has co-evolved with advanced forms of care in association with parental body but fail to find a relationship with other types of care.
Main conclusions Our study shows that parental care behaviours, together with environmental context, influence the evolution of classic life-history trade-offs on a global scale. While the initial investment in eggs is driven primarily by temperature and oxygen content, hatch size also reflects the impact of care an offspring has received throughout development. In support of the 'offspring-first' hypothesis, we find that an increase in hatch size drives the evolution of advanced care provision.
| Original language | English |
|---|---|
| Pages (from-to) | 2407-2419 |
| Number of pages | 13 |
| Journal | Global Ecology and Biogeography |
| Volume | 30 |
| Issue number | 12 |
| Early online date | 18 Sept 2021 |
| DOIs | |
| Publication status | Published - Dec 2021 |
Keywords
- Marine fishes
- Marine life histories
- Offspring size
- Parental investment
- Trait biogeography
- Trait co-evolution
Access to Document
- Vanadzina_2021_GEaB_Ecological-behavioural-drivers_AAM
Copyright © 2021 John Wiley & Sons Ltd. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1111/geb.13392.
Fingerprint
Dive into the research topics of 'Ecological and behavioural drivers of offspring size in marine teleost fishes'. Together they form a unique fingerprint.Projects
- 2 Finished
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Which came first: the parent or the egg?: Which came first: the parent or the egg? The evolution of parental care and egg size in marine fishes
Sheard, C. E. (PI)
1/01/19 → 30/04/19
Project: Standard
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Extended Evolutionary Synthesis: Putting the Extended Evolutionary Synthesis to the Test
Lala, K. (PI)
1/09/16 → 31/05/19
Project: Standard
Datasets
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Ecological and behavioural drivers of offspring size in marine teleost fishes
Vanadzina, K. (Contributor), Phillips, A. (Contributor), Martins, B. (Contributor), Laland, K. (Contributor), Webster, M. (Contributor) & Sheard, C. (Contributor), Dryad, 21 Sept 2021
Dataset