Within species support for the expensive tissue hypothesis: a negative association between brain size and visceral fat storage in females of the P acific seaweed pipefish
Article Swipe
Masahito Tsuboi
,
Jun Shoji
,
Atsushi Sogabe
,
Ingrid Ahnesjö
,
Niclas Kolm
·
YOU?
·
· 2016
· Open Access
·
· DOI: https://doi.org/10.1002/ece3.1873
YOU?
·
· 2016
· Open Access
·
· DOI: https://doi.org/10.1002/ece3.1873
The brain is one of the most energetically expensive organs in the vertebrate body. Consequently, the high cost of brain development and maintenance is predicted to constrain adaptive brain size evolution (the expensive tissue hypothesis, ETH ). Here, we test the ETH in a teleost fish with predominant female mating competition (reversed sex roles) and male pregnancy, the pacific seaweed pipefish S yngnathus schlegeli . The relative size of the brain and other energetically expensive organs (kidney, liver, heart, gut, visceral fat, and ovary/testis) was compared among three groups: pregnant males, nonpregnant males and egg producing females. Brood size in pregnant males was unrelated to brain size or the size of any other organ, whereas positive relationships were found between ovary size, kidney size, and liver size in females. Moreover, we found that the size of energetically expensive organs (brain, heart, gut, kidney, and liver) as well as the amount of visceral fat did not differ between pregnant and nonpregnant males. However, we found marked differences in relative size of the expensive organs between sexes. Females had larger liver and kidney than males, whereas males stored more visceral fat than females. Furthermore, in females we found a negative correlation between brain size and the amount of visceral fat, whereas in males, a positive trend between brain size and both liver and heart size was found. These results suggest that, while the majority of variation in the size of various expensive organs in this species likely reflects that individuals in good condition can afford to allocate resources to several organs, the cost of the expensive brain was visible in the visceral fat content of females, possibly due to the high costs associated with female egg production.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1002/ece3.1873
- https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/ece3.1873
- OA Status
- gold
- Cited By
- 15
- References
- 55
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W1694631300
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W1694631300Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.1002/ece3.1873Digital Object Identifier
- Title
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Within species support for the expensive tissue hypothesis: a negative association between brain size and visceral fat storage in females of the
P acific seaweed pipefishWork title - Type
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2016Year of publication
- Publication date
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2016-01-18Full publication date if available
- Authors
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Masahito Tsuboi, Jun Shoji, Atsushi Sogabe, Ingrid Ahnesjö, Niclas KolmList of authors in order
- Landing page
-
https://doi.org/10.1002/ece3.1873Publisher landing page
- PDF URL
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/ece3.1873Direct link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
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https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/ece3.1873Direct OA link when available
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Biology, Brain size, Ovary, Physiology, Kidney, Sexual dimorphism, Brain morphometry, Internal medicine, Endocrinology, Zoology, Medicine, Radiology, Magnetic resonance imagingTop concepts (fields/topics) attached by OpenAlex
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15Total citation count in OpenAlex
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2025: 1, 2024: 2, 2022: 1, 2020: 1, 2019: 2Per-year citation counts (last 5 years)
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55Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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