People need freshwater biodiversity

Wiley Interdisciplinary Reviews Water, Journal Year: 2023, Volume and Issue: 10(3)

Published: Feb. 8, 2023

Abstract Freshwater biodiversity, from fish to frogs and microbes macrophytes, provides a vast array of services people. Mounting concerns focus on the accelerating pace biodiversity loss declining ecological function within freshwater ecosystems that continue threaten these natural benefits. Here, we catalog nine fundamental ecosystem biotic components indigenous provide people, organized into three categories: material (food; health genetic resources; goods), non‐material (culture; education science; recreation), regulating (catchment integrity; climate regulation; water purification nutrient cycling). If is protected, conserved, restored in an integrated manner, as well more broadly appreciated by humanity, it will contribute human well‐being our sustainable future via this wide range associated nature‐based solutions future. This article categorized under: Human Water > Value Life Nature Ecosystems Science Environmental Change

Language: Английский

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Development of neural circuits for social motion perception in schooling fish

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

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Phylogenomics of Characidae, a hyper-diverse Neotropical freshwater fish lineage, with a phylogenetic classification including four families (Teleostei: Characiformes)

Zoological Journal of the Linnean Society, Journal Year: 2024, Volume and Issue: 202(1)

Published: Sept. 1, 2024

Abstract Neotropical tetras of the family Characidae form largest and most taxonomically complex clade within order Characiformes. Previous phylogenetic relationships concur on recognition four major subclades, whereas knowledge intergeneric interspecific remains largely incomplete or nonexistent. We sampled 575 specimens 494 species 123 genera classified in Characidae, generated new molecular data ultraconserved elements (UCEs), used likelihood Bayesian analyses. The phylogeny (1348 UCE loci: 538 472 bp) yielded clades with unprecedented resolution at species- genus-levels, allowing us to propose a classification former into families: Spintherobolidae, Stevardiidae, Acestrorhamphidae. Stevardiidae includes nine subfamilies: Landoninae, Xenurobryconinae, Glandulocaudinae, Argopleurinae, Hemibryconinae, Stevardiinae, Planaltininae, Creagrutinae, Diapominae. five Aphyocharacinae, Cheirodontinae, Exodontinae, Tetragonopterinae, Characinae. Acestrorhamphidae congregates 15 Oxybryconinae, Trochilocharacinae, Stygichthyinae, Megalamphodinae, Stichonodontinae, unnamed subfamily, Stethaprioninae, Pristellinae, Jupiabinae, Tyttobryconinae, Hyphessobryconinae, Thayeriinae, Rhoadsiinae, Grundulinae, Acestrorhamphinae. resolves supports revalidation Myxiops, Megalamphodus, Ramirezella, Holopristis, Astyanacinus, synonymy Aphyodite, Genycharax, Psellogrammus, expansion Cyanogaster, Makunaima, Deuterodon, Hasemania, Hemigrammus, Bario, Ctenobrycon, Psalidodon. opens avenues for systematic reviews redefinitions included genera.

Language: Английский

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Ultrafast sound production mechanism in one of the smallest vertebrates

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(10)

Published: Feb. 26, 2024

Motion is the basis of nearly all animal behavior. Evolution has led to some extraordinary specializations propulsion mechanisms among invertebrates, including mandibles dracula ant and claw pistol shrimp. In contrast, vertebrate skeletal movement considered be limited by speed muscle, saturating around 250 Hz. Here, we describe unique mechanism which

Language: Английский

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Evolutionary divergence of locomotion in two related vertebrate species

Cell Reports, Journal Year: 2022, Volume and Issue: 38(13), P. 110585 - 110585

Published: March 1, 2022

Locomotion exists in diverse forms nature; however, little is known about how closely related species with similar neuronal circuitry can evolve different navigational strategies to explore their environments. Here, we investigate this question by comparing divergent swimming pattern larval Danionella cerebrum (DC) and zebrafish (ZF). We show that DC displays long continuous events when compared the short burst-and-glide ZF. reveal mesencephalic locomotion maintenance neurons midbrain are sufficient cause increased swimming. Moreover, propose availability of dissolved oxygen timing swim bladder inflation drive observed differences pattern. Our findings uncover neural substrate underlying evolutionary divergence its adaptation environmental constraints.

Language: Английский

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Blazed oblique plane microscopy reveals scale-invariant inference of brain-wide population activity

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Dec. 4, 2023

Due to the size and opacity of vertebrate brains, it has until now been impossible simultaneously record neuronal activity at cellular resolution across entire adult brain. As a result, scientists are forced choose between cellular-resolution microscopy over limited fields-of-view or whole-brain imaging coarse-grained resolution. Bridging gap these spatial scales understanding remains major challenge in neuroscience. Here, we introduce blazed oblique plane perform brain-wide recording an vertebrate. Contrary common belief, find that inferences population near-independent scale: set randomly sampled neurons comparable predictive power as same number macrovoxels. Our work thus links with scope, challenges prevailing view macroscale methods generally inferior microscale techniques underscores value multiscale approaches studying activity.

Language: Английский

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The mechanism for directional hearing in fish

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

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Characterization of the vocal behavior of the miniature and transparent fish model, Danionella cerebrum

The Journal of the Acoustical Society of America, Journal Year: 2024, Volume and Issue: 155(1), P. 781 - 789

Published: Jan. 1, 2024

Danionella cerebrum has recently been proposed as a promising model to investigate the structure and function of adult vertebrate brain, including development vocal–auditory neural pathways. This genetically tractable transparent cypriniform is highly vocal, but limited information available on its acoustic behavior underlying biological function. Our main goal was characterize repertoire diel variation in sound production D. cerebrum, well relationship between vocal reproduction. Sound recordings demonstrated high activity, with sounds varying from short sequences pulses known “bursts” (comprising up 15 pulses) notably longer sounds, termed “long bursts”, which extended 349 over 2.7 s. Vocal activity peaked at midday it very low night only few bursts. While number higher during daytime, interpulse interval night. In addition, calling time positively associated viable eggs, suggesting that communication important for These preliminary findings reveal potential using plasticity implications sexual selection reproduction novel neuroscience.

Language: Английский

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Development of sound production in Danionella cerebrum

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

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Visually guided and context-dependent spatial navigation in the translucent fish Danionella cerebrum

Current Biology, Journal Year: 2023, Volume and Issue: 33(24), P. 5467 - 5477.e4

Published: Dec. 1, 2023

Danionella cerebrum (DC) is a promising vertebrate animal model for systems neuroscience due to its small adult brain volume and inherent optical transparency, but the scope of their cognitive abilities remains an area active research. In this work, we established behavioral paradigm study visual spatial navigation in DC investigate navigational capabilities strategies. We initially observed that exhibit strong negative phototaxis groups less so as individuals. Using dark preference motivator, designed task inspired by Morris water maze. Through series environmental cue manipulations, found utilize cues anticipate reward location evidence landmark-based strategies wherein could use both proximal distal cues. When subsets were occluded, capable using distant contextual information solve task, providing allocentric navigation. Without cues, tended seek out direct line sight with at least one while maintaining positional bias toward location. total, our results suggest can be used neural mechanisms underlying cellular resolution imaging across brain.

Language: Английский

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