Relationship between brain size and digestive tract length support the expensive-tissue hypothesis in Feirana quadranus DOI Creative Commons

Yi‐Ping Fu,

Yanling Song, Chao Yang

et al.

Frontiers in Ecology and Evolution, Journal Year: 2022, Volume and Issue: 10

Published: Sept. 30, 2022

The brain is among the most energetically costly organs in vertebrate body, while size of varies within species. expensive-tissue hypothesis (ETH) predicts that increasing another organ, such as gut, should compensate for cost a small brain. Here, ETH was tested by analyzing relationship between variation and digestive tract length Swelled-vented frog ( Feirana quadranus ). A total 125 individuals across 10 populations ranging from 586 to 1,702 m a.s.l. Qinling-Daba Mountains were sampled. With increase altitude, decreases increases. Different regions do not change their relative consistent manner. sizes telencephalon cerebellum decrease with olfactory nerve increases its at high altitudes. However, bulb optic tectum have no significant altitude. After controlling snout-vent (SVL), negative correlation could be found F. . Therefore, intraspecific follows general patterns this results suggest annual mean temperature precipitation are environmental factors influencing adaptive evolution length. This study also suggests food composition, activity times, habitat complexity potential reasons driving

Language: Английский

The economics of brain size evolution in vertebrates DOI Creative Commons
Sandra A. Heldstab, Karin Isler,

Sereina M. Graber

et al.

Current Biology, Journal Year: 2022, Volume and Issue: 32(12), P. R697 - R708

Published: June 1, 2022

Language: Английский

Citations

52
Sexual Dimorphism in the Limb Bones of Asiatic Toad (Bufo gargarizans) in Relation to Sexual Selection DOI Creative Commons
Chengzhi Yan, Hui Ma,

Yuejun Yang

et al.

Animals, Journal Year: 2023, Volume and Issue: 13(16), P. 2638 - 2638

Published: Aug. 16, 2023

Sexual dimorphism is often considered to be the result of differences in intensity sexual selection between sexes. From this point view, limb bones Bufo gargarizans southwest China was studied. Results showed that fore- and hindlimb skeletons species were sexually dimorphic anatomy. The humerus, radioulna, total lengths forelimb skeleton males substantially longer than those females, but hand length smaller females. Several other features males, such as deltoid medial crest areas humerus radioulnar weights, also significantly larger femoris, tibiofibula, talus–calcaneus, foot lengths; length; femoral upper greater However, no significant intersexual difference femoris tibiofibular weights observed. These findings suggested robust long could contribute mating success males; if so, promotes evolution size shape B. gargarizans.

Language: Английский

Citations

4
Counter-gradient variation and the expensive tissue hypothesis explain parallel brain size reductions at high elevation in cricetid and murid rodents DOI Creative Commons
Aluwani Nengovhela, Catherine M. Ivy, Graham R. Scott

et al.

Scientific Reports, Journal Year: 2023, Volume and Issue: 13(1)

Published: April 6, 2023

To better understand functional morphological adaptations to high elevation (> 3000 m above sea level) life in both North American and African mountain-associated rodents, we used microCT scanning acquire 3D images a morphometric approach calculate endocranial volumes skull lengths. This was done on 113 crania of low-elevation high-elevation populations species cricetid mice (two Peromyscus species, n = 53), murid rodents two tribes, Otomyini (five 49) Praomyini (four 11). We tested distinct hypotheses for how volume might vary populations: the expensive tissue hypothesis, which predicts that brain will be reduced lessen costs growing maintaining large brain; brain-swelling increased either as direct phenotypic effect or an adaptation accommodate swelling thus minimize pathological symptoms altitude sickness. After correcting general allometric variation cranial size, found laminate-toothed (Otomys) rats, highland had smaller than lower-elevation consistent with hypothesis. In former group, mice, were obtained not just from wild-caught low elevations but also those bred common-garden laboratory conditions parents caught elevations. Our results these showed size responses have strong genetic basis, counters opposite weaker environmental volume. These potentially suggest selection may act reduce across small mammals at further experiments are needed assess generality this conclusion nature underlying mechanisms.

Language: Английский

Citations

4
Brain size variation along altitudinal gradients in the Asiatic Toad (Bufo gargarizans) DOI Creative Commons
Zhongyi Yao, Yin Qi, Bisong Yue

et al.

Ecology and Evolution, Journal Year: 2021, Volume and Issue: 11(7), P. 3015 - 3027

Published: Jan. 26, 2021

Abstract Size changes in brain and regions along altitudinal gradients provide insight into the trade‐off between energetic expenditure cognitive capacity. We investigated size variations of Asiatic Toad ( Bufo gargarizans ) across altitudes from 700 m to 3,200 m. A total 325 individuals 11 sites two transects were sampled. To reduce confounding factors, all sampling within each transect a maximum distance 85 km an difference close 2,000 Brains dissected, five both measured directly with 3D CT scan. There is significant negative correlation relative whole‐brain volume (to snout‐vent length) altitude. Furthermore, volumes volume) optic tectum cerebellum also decrease gradients, while telencephalon increases its gradients. Therefore, our results are mostly consistent expensive hypothesis functional constraint hypothesis. suggest that most current hypotheses not mutually exclusive data supporting one often partially others. More studies on mechanisms needed explain evolution natural populations.

Language: Английский

Citations

7
<italic>Bufo gargarizans</italic>: What’s in a Name? DOI
Jinzhong Fu

Asian Herpetological Research, Journal Year: 2023, Volume and Issue: 14(3), P. 246 - 255

Published: June 26, 2023

Citations

1
Ecological adaptations of amphibians to environmental changes along an altitudinal gradient (Case Study: Bufo gargarizans) from phenotypic and genetic perspectives DOI Creative Commons
Yonggang Niu, Xuejing Zhang, Haiying Zhang

et al.

BMC Biology, Journal Year: 2024, Volume and Issue: 22(1)

Published: Oct. 10, 2024

Organisms have evolved a range of phenotypic and genetic adaptations to live in different environments along an altitudinal gradient. Herein, we studied the widely distributed Chinese toad, Bufo gargarizans, as model used integrated phenotype-genotype approach assess environments.

Language: Английский

Citations

0
Relationship between brain size and digestive tract length support the expensive-tissue hypothesis in Feirana quadranus DOI Creative Commons

Yi‐Ping Fu,

Yanling Song, Chao Yang

et al.

Frontiers in Ecology and Evolution, Journal Year: 2022, Volume and Issue: 10

Published: Sept. 30, 2022

The brain is among the most energetically costly organs in vertebrate body, while size of varies within species. expensive-tissue hypothesis (ETH) predicts that increasing another organ, such as gut, should compensate for cost a small brain. Here, ETH was tested by analyzing relationship between variation and digestive tract length Swelled-vented frog ( Feirana quadranus ). A total 125 individuals across 10 populations ranging from 586 to 1,702 m a.s.l. Qinling-Daba Mountains were sampled. With increase altitude, decreases increases. Different regions do not change their relative consistent manner. sizes telencephalon cerebellum decrease with olfactory nerve increases its at high altitudes. However, bulb optic tectum have no significant altitude. After controlling snout-vent (SVL), negative correlation could be found F. . Therefore, intraspecific follows general patterns this results suggest annual mean temperature precipitation are environmental factors influencing adaptive evolution length. This study also suggests food composition, activity times, habitat complexity potential reasons driving

Language: Английский

Citations

2