Diverse prey capture strategies in teleost larvae

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Oct. 4, 2023

Summary Animal behavior is adapted to the sensory environment in which it evolved, while also being constrained by physical limits, evolutionary history, and developmental trajectories. The hunting of larval zebrafish ( Danio rerio ), a cyprinid native streams Eastern India, has been well characterized. However, unknown if complement sequence movements employed during prey capture universal across freshwater teleosts. Here, we explore syntax fish belonging clade Percomorpha , whose last common ancestor with cyprinids lived ∼240 million years ago. We compared four cichlid species from Lake Tanganyika endemic deep benthic parts lake Lepidiolamprologus attenuatus Lamprologus ocellatus Neolamprologus multifasciatus ) or inhabiting rivers Astatotilapia burtoni that medaka Oryzias latipes found rice paddies East Asia. Using high speed videography neural networks, tracked eye extracted swim kinematics larvae these five species. Notably, repertoire cichlids broader than zebrafish, but shares basic features, such as convergence, positioning centrally binocular visual field, discrete bouts, including two kinds strikes. In contrast, continuously, track monocularly without position laterally before capturing them side swing. This configuration kinematic motifs suggests may judge distance predominantly motion parallax, mainly use cues. Together, our study documents diversification locomotor oculomotor adaptations among teleost larvae.

Language: Английский

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NAPS: Integrating pose estimation and tag‐based tracking

Methods in Ecology and Evolution, Journal Year: 2023, Volume and Issue: 14(10), P. 2541 - 2548

Published: Aug. 28, 2023

1. Significant advances in computational ethology have allowed the quantification of behaviour unprecedented detail. Tracking animals social groups, however, remains challenging as most existing methods can either capture pose or robustly retain individual identity over time but not both. 2. To finely resolved behaviours while maintaining identity, we built NAPS (NAPS is ArUco Plus SLEAP), a hybrid tracking framework that combines state-of-the-art, deep learning-based for estimation (SLEAP) with unique markers persistence (ArUco). We show this allows exploration dynamics common eastern bumblebee (

Language: Английский

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SUBTLE: An Unsupervised Platform with Temporal Link Embedding that Maps Animal Behavior

International Journal of Computer Vision, Journal Year: 2024, Volume and Issue: 132(10), P. 4589 - 4615

Published: May 20, 2024

Abstract While huge strides have recently been made in language-based machine learning, the ability of artificial systems to comprehend sequences that comprise animal behavior has lagging behind. In contrast, humans instinctively recognize behaviors by finding similarities behavioral sequences. Here, we develop an unsupervised behavior-mapping framework, SUBTLE (spectrogram-UMAP-based temporal-link embedding), capture comparable repertoires from 3D action skeletons. To find best embedding method, devise a temporal proximity index (TPI) as new metric gauge representation space. The method achieves TPI score compared current strategies. Its spectrogram-based UMAP clustering not only identifies subtle inter-group differences but also matches human-annotated labels. framework automates tasks both identifying like walking, grooming, standing, and rearing, profiling individual signatures age. highlights importance space for human-like categorization.

Language: Английский

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Diverse prey capture strategies in teleost larvae

Published: July 22, 2024

Animal behavior is adapted to the sensory environment in which it evolved, while also being constrained by physical limits, evolutionary history, and developmental trajectories. The hunting of larval zebrafish ( Danio rerio ), a cyprinid native streams Eastern India, has been well characterized. However, unknown if complement sequence movements employed during prey capture universal across freshwater teleosts. Here, we explore syntax fish belonging clade Percomorpha , whose last common ancestor with cyprinids lived ∼240 million years ago. We compared four cichlid species endemic deep benthic parts Lake Tanganyika Lepidiolamprologus attenuatus Lamprologus ocellatus Neolamprologus multifasciatus ) or inhabiting rivers around that same lake Astatotilapia burtoni medaka Oryzias latipes found rice paddies East Asia. Using high speed videography neural networks, tracked eye extracted swim kinematics from these five species. Notably, repertoire cichlids broader than zebrafish, but shares basic features, such as convergence, positioning centrally binocular visual field, discrete bouts, including two kinds strikes. In contrast, continuously, track monocularly without position laterally before capturing them side swing. This configuration kinematic motifs suggests may judge distance motion parallax, use cues. Together, our study documents diversification locomotor oculomotor adaptations among teleost larvae.

Language: Английский

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Is variation in female aggressiveness across Drosophila species associated with reproductive potential?

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 28, 2024

Aggression is a key determinant of fitness in many species, mediating access to mates, food, and breeding sites. Variation intrasexual aggression across species likely driven by variation resource availability distribution. While males primarily compete over females are resources maximize offspring quantity and/or quality, such as food or To date, however, most studies have focused on male we know little about drivers female species. investigate potential reproductive aggression, tested the relationship between three traits eight Drosophila Using machine learning classifiers developed for D. melanogaster, quantified aggressive behaviours displayed presence yeast mated unmated females. We found that was correlated with ovariole number suggesting lay more eggs aggressive. A need egg production oviposition sites may therefore be though other hypotheses discussed.

Language: Английский

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