Repugnatorial glands and aposematism in terrestrial isopods (Isopoda: Oniscidea: Armadillidiidae, Porcellionidae)

Journal of Crustacean Biology, Год журнала: 2025, Номер 45(1)

Опубликована: Янв. 10, 2025

Abstract Invertebrates exhibit a wide diversity in defensive secretions used to deter predators. Terrestrial isopods possess lobed glands, thought secrete substances, particularly through uropods or lateral plates. Our study explores the mechanisms of species Armadillidium Brandt, 1833 with distinctive aposematic colourations, investigating secretion properties and histological characteristics their tegumental glands. Histological analysis revealed presence glands across all examined species, notable interspecific variation abundance morphology. While produced sticky, viscous from uropod only gestroi Tua, 1900 klugii discharged an unpleasant odour plate when exposed cold. These findings suggest that may signal distastefulness honestly both chemical visual cues. Cryptic those lacking detectable odour, however, mimic toxic without producing defences can produce substances taste. The gland morphology appears be linked predator avoidance strategies, such as clinging, running, rolling, different isopod ecomorphotypes.

Язык: Английский

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The olfactory pathway in the peracarid crustacean Parhyale hawaiensis (Malacostraca): new insights into the evolution of olfactory processing in Pancrustacea

Open Biology, Год журнала: 2025, Номер 15(5)

Опубликована: Янв. 1, 2025

Our current understanding of the functional morphology olfactory systems in arthropods largely relies on information obtained hexapods. Existing analyses pathway crustacean representatives have suggested that these animals share several corresponding anatomical elements with hexapod but latter likely feature a different wiring logic from receptor to glomerulus. This study sets out further explore diversity arthropod by presenting detailed morphological analysis peripheral and central pathways an emerging model system, peracarid Parhyale hawaiensis (Malacostraca). These all neuronal characterize malacostracan crustacean’s systems, simplicity this animal’s system provided unique opportunity quantify numbers sensilla associated sensory neurons, interneurons glomeruli. data showed number those is highly variable across individuals, contrasting more stable typically are characterized glomeruli individual identities constant numbers. We discuss possible steps needed for evolutionary transformation type into type.

Язык: Английский

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Microbial metabolites as engines of behavioral variation across animals

Gut Microbes, Год журнала: 2025, Номер 17(1)

Опубликована: Май 13, 2025

The microbiome, especially that present in the gut, has emerged as a key modulator of animal behavior. However, extent its influence across species and behavioral repertoires, well underlying mechanisms, remains poorly understood. Increasing evidence suggests microbial metabolites play an important role driving variation. In this review, we synthesize findings from vertebrates to invertebrates, spanning both model non-model organisms, define groups microbial-derived involved modulating seven distinct behaviors: nutrition, olfaction, circadian rhythms, reproduction, locomotion, aggression, social interactions. We discuss how these interact with host chemosensory systems, neurotransmitter signaling, epigenetic modifications shape Additionally, highlight critical gaps mechanistic understanding, including need map additional receptors signaling pathways, untapped potential biosynthetic gene clusters sources for novel bioactive compounds. Advancing areas will enhance understanding microbiome's modulation open new avenues microbiome-based interventions disorders.

Язык: Английский

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Brain morphology in the peracarid crustacean Neomysis integer (Leach, 1814) with an emphasis on sexual dimorphism of the olfactory pathway

Cell and Tissue Research, Год журнала: 2025, Номер unknown

Опубликована: Май 14, 2025

Язык: Английский

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Gustatory socioecology: The evolution, ecology, and mechanisms of taste in eusocial insects

Advances in insect physiology, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Computational modelling of olfactory receptors

Biochimica et Biophysica Acta (BBA) - General Subjects, Год журнала: 2025, Номер 1869(8), С. 130825 - 130825

Опубликована: Май 27, 2025

Язык: Английский

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Developing and field testing sustainable synthetic baits for the blue crab (Callinectes sapidus) fishery

Fisheries Research, Год журнала: 2024, Номер 276, С. 107042 - 107042

Опубликована: Май 8, 2024

Язык: Английский

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