Sound localization circuits in reptiles DOI Creative Commons
Dawei Han,

Rebeca W. Fuquen,

Katie L. Willis

et al.

Frontiers in Amphibian and Reptile Science, Journal Year: 2024, Volume and Issue: 2

Published: Sept. 4, 2024

Location of sound sources is a fundamental task the auditory system. Recent studies have shown that land vertebrates employ an array localization strategies. We therefore compared brainstem circuits by measuring cell numbers in cochlear nuclei relation to brain weight among different groups reptiles determine if these behavioral differences are reflected organization brainstem. In extant archosaurs, birds and crocodilians, two ears weakly connected pressure receivers, direction computed binaural interactions involving parallel processing interaural time level differences. The first-order nucleus magnocellularis (NM) angularis (NA). NM projects bilaterally laminaris (NL), where archosaurs. Relative size, NA, NL counts American alligator ( Alligator mississippiensis ) similar those birds. Testudines (turtles tortoises), sister group also assumed compute location from due middle ears. Compared red-eared slider Trachemys scripta ), common snapping turtle Chelydra serpentina Hermann’s tortoise Testudo hermanni all proportionally small. lizards, strong internal coupling ears, nerve responses directional, co-dependent frequency dependent, suggesting neural may be tokay gecko Gekko green iguana Iguana small, but NA well-developed, greater importance pathway for high-frequency directional information generated coupled Snakes originated lizard ancestors, secondarily lost their eardrums, strategies unknown. western ratsnake Pantherophis obsoletus smaller than lizards.

Language: Английский

Counting the costs of expensive tissues: mating system, brain size, and IGF-1 affect the ecological costs of transport in mammals DOI Creative Commons
Jerry F. Husak, Mahaut Sorlin, Simon P. Lailvaux

et al.

Frontiers in Ethology, Journal Year: 2024, Volume and Issue: 3

Published: Oct. 10, 2024

Although sexual selection can be a powerful evolutionary force in shaping the phenotype, sexually selected traits do not evolve isolation of other or without influence from selective pressures. Expensive tissues, such as brains, constrain evolution traits, testes, energetically expensive processes, like costs locomotion. However, simple linear binary analyses specific interest prevent detection important links within integrated phenotype and obfuscate importance multiple forces. We used phylogenetically informed path analysis to determine causal among mating system type, pace life history, locomotion, brain size, testis size across 48 mammal species that exhibit wide range body sizes, life-history strategies, types found with non-monogamous systems were associated larger faster histories, lower locomotion compared monogamous species. Having was slower history and, surprisingly, testes. In addition highlighting non-intuitive nature certain relationships, our results also emphasize utility including studies well considering constraints imposed by linked on those traits.

Language: Английский

Citations

2
Thought for food: the endothermic brain hypothesis DOI Creative Commons
Mathias Osvath, Pavel Němec, Stephen L. Brusatte

et al.

Trends in Cognitive Sciences, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 1, 2024

Language: Английский

Citations

1
Sound localization circuits in reptiles DOI Creative Commons
Dawei Han,

Rebeca W. Fuquen,

Katie L. Willis

et al.

Frontiers in Amphibian and Reptile Science, Journal Year: 2024, Volume and Issue: 2

Published: Sept. 4, 2024

Location of sound sources is a fundamental task the auditory system. Recent studies have shown that land vertebrates employ an array localization strategies. We therefore compared brainstem circuits by measuring cell numbers in cochlear nuclei relation to brain weight among different groups reptiles determine if these behavioral differences are reflected organization brainstem. In extant archosaurs, birds and crocodilians, two ears weakly connected pressure receivers, direction computed binaural interactions involving parallel processing interaural time level differences. The first-order nucleus magnocellularis (NM) angularis (NA). NM projects bilaterally laminaris (NL), where archosaurs. Relative size, NA, NL counts American alligator ( Alligator mississippiensis ) similar those birds. Testudines (turtles tortoises), sister group also assumed compute location from due middle ears. Compared red-eared slider Trachemys scripta ), common snapping turtle Chelydra serpentina Hermann’s tortoise Testudo hermanni all proportionally small. lizards, strong internal coupling ears, nerve responses directional, co-dependent frequency dependent, suggesting neural may be tokay gecko Gekko green iguana Iguana small, but NA well-developed, greater importance pathway for high-frequency directional information generated coupled Snakes originated lizard ancestors, secondarily lost their eardrums, strategies unknown. western ratsnake Pantherophis obsoletus smaller than lizards.

Language: Английский

Citations

0