Neural and behavioral evolution in an eavesdropper with a rapidly evolving host

Current Biology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

The diversification of animal communication systems is driven by the interacting effects signalers, signal receivers, and environment. Yet, critical role unintended like eavesdropping enemies, has been underappreciated. Furthermore, contemporary evolution signals rare, making it difficult to directly observe this process. Ormiine parasitoid flies rely exclusively on acoustic cues locate singing male orthopteran hosts. In Hawaii, selection imposed Ormia ochracea led recent rapid their local host crickets' song. We use complementary lab field experiments understand how receiver psychology (sensory cognitive mechanisms) evolves accommodate a new that host's signal. Receiver our understanding host-parasite coevolution communication, as sensory system establishes limits behavioral responses exert signals. demonstrate neural auditory tuning behavior O. have evolved in these differences likely facilitate detection novel songs. Further, recently songs are highly variable among males, prefer with particular spectral characteristics, enabling us predict eavesdroppers may shape song evolution. To knowledge, first evidence for an eavesdropper. Our work links systems, signals, behavior, heeding call better integration mechanisms receivers into communication.

Language: Английский

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Bacterial infection influences courtship behavior and mate choice in a wolf spider

Behavioral Ecology and Sociobiology, Journal Year: 2025, Volume and Issue: 79(3)

Published: Feb. 20, 2025

Language: Английский

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Rewiring the Vehicle: Trypanosoma cruzi Parasites Alter the Antennae of Their Triatomine Hosts

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(3)

Published: March 1, 2025

ABSTRACT This study investigates the antennal phenotype of kissing bug Triatoma pallidipennis (Stål), a primary vector Chagas disease, by comparing Trypanosoma cruzi ‐infected and noninfected individuals. We examined antennae infected N5 nymphs, as well adult females males, focusing on four types sensilla (bristles, basiconic, thin‐walled trichoid, thick‐walled trichoid) across three antenna segments (pedicel, proximal flagellum, distal flagellum). found differences in abundance segments, with flagellum showing highest abundance, followed pedicel having least. Infection demonstrated that males had more chemosensilla than females. observed trend nymphs an increased variation types. These modifications are related to previous results this species whereby bugs were be active capable finding human odor compared animals. Thus, infection‐related changes may underlie T. ' sensory capabilities, which indirectly facilitate spread parasite.

Language: Английский

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Parasitism and the tradeoffs of social grouping: The role of parasite transmission mode

Published: Jan. 25, 2024

Animals use social grouping for numerous fitness-enhancing processes, such as foraging, learning, defense, and energy expenditure. One broadly referenced negative consequence of is the increased risk exposure to parasites, which are defined here organisms with obligate, persistent, harmful consumer associations a host. However, there growing evidence that group living can also act defensive mechanism against parasites. Here, we present conceptual framework explores host sociability in context parasite life history, arguing positive or impact lifestyle on infection strongly linked parasite’s transmission mode. We discuss link between respect common, non-mutually exclusive differences transmission: direct vs. indirect, density- frequency-dependent, simple complex cycles. then our mechanisms active avoidance, passive effects infection-induced phenotypes, their impacts networks. Further, highlight additional important factors modulate these dynamics (e.g., virulence, intensity, co-infection by multiple environmental factors). The goal this broad, comparative approach provide researchers from disciplines unified better understand relationship host-parasite interactions across diverse systems.

Language: Английский

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Selected Wildlife Trematodes

Advances in experimental medicine and biology, Journal Year: 2024, Volume and Issue: unknown, P. 391 - 440

Published: Jan. 1, 2024

Language: Английский

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Infection by a fungal pathogen and mating behavior in Pacific treefrogs: a test of the Hamilton-Zuk hypothesis

Behavioral Ecology and Sociobiology, Journal Year: 2024, Volume and Issue: 78(11)

Published: Oct. 23, 2024

Language: Английский

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Convergent Anuran Middle Ear Loss Lacks a Universal, Adaptive Explanation

Brain Behavior and Evolution, Journal Year: 2023, Volume and Issue: 98(6), P. 290 - 301

Published: Jan. 1, 2023

Shared selection pressures often explain convergent trait loss, yet anurans (frogs and toads) have lost their middle ears at least 38 times with no obvious shared unifying "earless" taxa. Anuran tympanic ear loss is especially perplexing because acoustic communication dominant within Anura enhance airborne hearing in most tetrapods.

Language: Английский

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