Published: Jan. 1, 2024
Language: Английский
Current Biology, Journal Year: 2024, Volume and Issue: 34(15), P. 3380 - 3391.e5
Published: July 17, 2024
The collective behavior of animal groups emerges from the interactions among individuals. These social produce coordinated movements bird flocks and fish schools, but little is known about their developmental emergence neurobiological foundations. By characterizing visually based schooling micro glassfish Danionella cerebrum, we found that development progresses sequentially, with animals first acquiring ability to aggregate, followed by postural alignment partners. This maturation was accompanied neural populations in midbrain were preferentially driven visual stimuli resemble shape fish. Furthermore, isolation over course impaired both encoding motion adults. work demonstrates selective for form conspecifics emerge experience-dependent movement.
Language: Английский
Citations
12
Current Biology, Journal Year: 2025, Volume and Issue: 35(2), P. R62 - R64
Published: Jan. 1, 2025
Language: Английский
Citations
1
Nature, Journal Year: 2024, Volume and Issue: 631(8019), P. 118 - 124
Published: June 19, 2024
Abstract Locating sound sources such as prey or predators is critical for survival in many vertebrates. Terrestrial vertebrates locate by measuring the time delay and intensity difference of pressure at each ear 1–5 . Underwater, however, physics makes interaural cues very small, suggesting that directional hearing fish should be nearly impossible 6 Yet, has been confirmed behaviourally, although mechanisms have remained unknown decades. Several hypotheses proposed to explain this remarkable ability, including possibility evolved an extreme sensitivity minute differences might compare with particle motion signals 7,8 However, experimental challenges long hindered a definitive explanation. Here we empirically test these models transparent teleost Danionella cerebrum , one smallest 9,10 By selectively controlling motion, dissect sensory algorithm underlying acoustic startles. We find both are indispensable behaviour their relative phase controls its direction. Using micro-computed tomography optical vibrometry, further show D. structures implement mechanism. shares more than 15% living vertebrate species, widespread mechanism inferring
Language: Английский
Citations
6
Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(16)
Published: Aug. 15, 2024
ABSTRACT Acoustic signalling, integral to intraspecific communication and reproductive behaviour, undergoes notable changes during an animal's ontogenetic development. The onset progression of this maturation in fish remains poorly understood. Here, we investigated the ontogeny acoustic miniature teleost Danionella cerebrum, one smallest known vertebrates emerging model organism. Its adult males produce audible clicks that appear sequences with a repetition rate ∼60 or ∼120 Hz, caused by consecutive unilateral alternating bilateral compressions swim bladder. To investigate ability, performed long-term sound recordings morphological studies production apparatus D. cerebrum throughout its We found start producing second month their lives continually increase abundance structured over course following 1 2 months. machinery, including specialised bone cartilage structures, starts form after approximately 4 weeks prior reaching sexual maturity. Although amplitude as animals mature, click rates 60 120 Hz are stable This suggests fully mature pattern generation juvenile males, yet continued development drumming capable creating louder sounds.
Language: Английский
Citations
5
Published: Jan. 1, 2025
Language: Английский
Citations
0
The Journal of Comparative Neurology, Journal Year: 2025, Volume and Issue: 533(4)
Published: April 1, 2025
ABSTRACT Animals integrate information from different sensory modalities as they mature and perform increasingly complex behaviors. This may parallel differential investment in specific brain regions depending on the changing demands of inputs. To investigate developmental changes volume canonical regions, we used third harmonic generation imaging for morphometric analysis forebrain midbrain larval through juvenile adult stages Danionella dracula , a transparent, miniature teleost fish whose is optically accessible throughout its lifespan. Relative to whole‐brain volume, increased or telencephalon, higher order integration center, shows most dramatic increases between 30–60 days postfertilization (dpf) again at 90 dpf animals reach adulthood. The torus longitudinalis (TL), visuomotor also significantly 60 dpf. In contrast, optic tectum (TeO), retinal‐recipient target, progressively decreases 30 dpf, whereas relatively consistent across all semicircularis (TS), secondary auditory mechanosensory lateral line olfactory bulb (OB), direct target epithelium. sum, higher‐order centers (telencephalon, TL) occurs juveniles adulthood (60–90 dpf) exhibit more cognitive tasks, modality‐dominant earlier (TeO) development (TS, OB). Complete optical access ’s lifespan provides unique opportunity how structure over correlates with connectivity, microcircuitry, behavior.
Language: Английский
Citations
0
Current Biology, Journal Year: 2025, Volume and Issue: unknown
Published: May 1, 2025
Language: Английский
Citations
0
Current Biology, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 1, 2024
Animals need to rapidly learn recognize and avoid predators. This ability may be especially important for young animals due their increased vulnerability. It is unknown whether, how, nascent vertebrates are capable of such rapid learning. Here, we used a robotic predator-prey interaction assay show that 1 week after fertilization-a developmental stage where they have approximately 1% the number neurons adults-zebrafish larvae robustly stationary object as threat pursues fish ∼1 min. Larvae continue threatening it stops moving can distinguish from non-threatening objects different color. Whole-brain functional imaging revealed multi-timescale activity noradrenergic forebrain circuits encoded threat. Chemogenetic ablation those populations prevented Thus, multiregional network underlies potential predators within first life.
Language: Английский
Citations
2
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: March 29, 2024
Abstract Acoustic signaling, integral to intraspecific communication and reproductive behavior, undergoes notable changes during an animal’s ontogenetic development. The onset progression of this maturation in fish remains poorly understood. Here, we investigate the ontogeny acoustic micro glassfish Danionella cerebrum (DC), one smallest known vertebrates emerging model organism neuroscience. Adult DC males produce audible clicks that appear sequences with a repetition rate 60 or 120 Hz, caused by consecutive unilateral alternating bilateral compressions, respectively. To ability, performed long-term sound recordings morphological studies production apparatus throughout its We found start producing second month their lives continually increase abundance structured over course following two months. machinery, including specialized bone cartilage structures, form male after approximately four weeks prior full organs. While amplitude age body size, click rates Hz are stable This suggests fully developed central pattern generator juvenile males, yet continued drumming capable creating louder sounds.
Language: Английский
Citations
1
bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown
Published: July 22, 2024
ABSTRACT Animals integrate information from different sensory modalities as they mature and perform increasingly complex behaviors. This may parallel differential investment in specific brain regions depending on the demands of changing inputs. To investigate developmental changes volume canonical integration regions, we used third harmonic generation imaging for morphometric analysis forebrain midbrain 5 to 90 days post fertilization (dpf) Danionella dracula , a transparent, miniature teleost fish whose is optically accessible throughout its lifespan. Relative whole volume, increased or telencephalon, higher order center, torus longitudinalis (TL), visuomotor relatively consistent 30 dpf, until it increases at 60 followed by another increase animals reach adulthood. In contrast, optic tectum (TeO), retinal-recipient target, progressively decreases 30-90 whereas across all stages semicircularis (TS), secondary auditory mechanosensory lateral line olfactory bulb (OB), direct target epithelium. sum, centers (telencephalon, TL) occurs juveniles adulthood exhibit more cognitive tasks, modality-dominant earlier (TeO) development (TS, OB). Complete optical access ’s lifespan provides unique opportunity how structure over correlates with connectivity, microcircuitry, behavior.
Language: Английский
Citations
0