Non-consumptive effects of native, alien and invasive alien crayfish on damselfly egg life history and carry-over effects on larval physiology

NeoBiota, Journal Year: 2025, Volume and Issue: 97, P. 215 - 235

Published: Feb. 13, 2025

Invasive alien (IA) predators pose significant threats to native ecosystems, often leading profound impacts on prey species through both direct and non-consumptive effects (NCE). This study focused the NCE of predator-induced stress from one crayfish species, noble ( Astacus astacus ), compared danube Pontastacus leptodactylus ) two IA signal Pacifastacus leniusculus spinycheek Faxonius limosus damselfly Ischnura elegans . We investigated cue effect egg traits as well potential carry-over stage larval stage. hypothesised that cues would lead more pronounced negative crayfish, due an evolutionary history interaction recognition these threats. Unexpectedly, cues, caused significantly higher mortality prolonged developmental times, particularly while had weaker, yet, still effects. Hatching synchrony was reduced this same extent by all four species. Notably, effects, resulting in survival, mass fat content, which were for crayfish. Native did not induce suggesting I. may have evolved a degree resilience against predator or produce chemical do cause strong antipredator response. Our findings underscore importance considering immediate carry over across multiple life stages, context biological invasions.

Language: Английский

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The genomic response to urbanization in the damselfly Ischnura elegans

Evolutionary Applications, Journal Year: 2023, Volume and Issue: 16(11), P. 1805 - 1818

Published: Oct. 11, 2023

Abstract The complex and rapid environmental changes brought about by urbanization pose significant challenges to organisms. multifaceted effects of often make it difficult define pinpoint the very nature adaptive urban phenotypes. In such situations, scanning genomes for regions differentiated between non‐urban populations may be an attractive approach. Here, we investigated genomic signatures adaptation in damselfly Ischnura elegans sampled from 31 rural localities three geographic regions: southern northern Poland, Sweden. Genome‐wide variation was assessed using more than 370,000 single nucleotide polymorphisms (SNPs) genotyped ddRADseq. Associations SNPs level were tested two genetic environment association methods: Latent Factors Mixed Models BayPass. While found numerous candidate a highly overlap candidates identified methods within regions, there distinctive lack repeatability both at individual regions. However, “synapse organization” top functional categories enriched among genes located proximity SNPs. Interestingly, overall significance built up accretion different associated with This finding is consistent polygenic adaptation, where response achieved through subtle adjustment allele frequencies that contribute Taken together, our results point nervous system, specifically implicating involved synapse organization, which mirrors findings several behavioral studies other taxa.

Language: Английский

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Microgeographic differentiation in thermal and antipredator responses and their carry-over effects across life stages in a damselfly

PLoS ONE, Journal Year: 2024, Volume and Issue: 19(2), P. e0295707 - e0295707

Published: Feb. 23, 2024

Global warming and invasive species, separately or combined, can impose a large impact on the condition of native species. However, we know relatively little about how these two factors, individually in combination, shape phenotypes ectotherms across life stages this differ between populations. We investigated non-consumptive predator effects (NCEs) imposed by (perch) (signal crayfish) predators experienced only during egg stage both larval combination with adult history traits damselfly Ischnura elegans . To explore microgeographic differentiation, compared nearby populations differing thermal conditions history. In absence cues, positively affected survival, possibly because warmer temperature was closer to optimal temperature. presence decreased indicating synergistic effect variables survival. one population, cues from perch led increased especially under current temperature, likely stress acclimation phenomena. While decreased, development time proportionally stronger signal crayfish stage, negative carry-over larva. Warming mass at emergence, driven mainly exposure positive adult. Notably, were not consistent studied populations, suggesting phenotypic adaptation scale also observed pronounced shifts ontogeny (egg early stage) toward additive (late up emergence) stress. The results point out that population- life-stage-specific responses life-history NCEs are needed predict fitness consequences prey scale.

Language: Английский

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Warming and latitude shape the non-consumptive effects of native and invasive alien crayfish predators on damselfly prey

NeoBiota, Journal Year: 2025, Volume and Issue: 98, P. 223 - 245

Published: April 14, 2025

There is increasing concern that the effects of biological invasions may be magnified by other human-induced global changes. Here, we compare non-consumptive imposed invasive vs. native predators and how these (differential) responses to both predator types depend on warming prey latitude. We raised damselfly larvae from central- high-latitudes in incubators under two temperatures (current [20 °C] [24 °C]) further exposed them one three cues: noble (native), signal (invasive at latitudes) spiny-cheek but absent high crayfish. Growth rate increased central-latitude decreased high-latitude response The crayfish only reduced growth prey. Cues all species generally caused a higher net energy budget, warming. Our results demonstrated were able recognize novel (spiny-cheek crayfish) cue, revealed differential toward shared (signal crayfish). data provide rare support for change factors magnify impact predators.

Language: Английский

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Limited evidence for genetic differentiation or adaptation in two amphibian species across replicated rural–urban gradients

Evolutionary Applications, Journal Year: 2024, Volume and Issue: 17(6)

Published: June 1, 2024

Abstract Urbanization leads to complex environmental changes and poses multiple challenges organisms. Amphibians are highly susceptible the effects of urbanization, with land use conversion, habitat destruction, degradation ranked as most significant threats. Consequently, amphibians declining in urban areas, both population numbers abundance, however, effect urbanization on genetic parameters remains unclear. Here, we studied genomic response two widespread European species, common toad Bufo bufo (26 localities, 480 individuals), smooth newt Lissotriton vulgaris (30 516 individuals) three geographic regions: southern northern Poland Norway. We assessed genome‐wide SNP variation using RADseq (ca. 42 552 thousand SNPs toads newts, respectively) adaptively relevant major histocompatibility (MHC) class I II genes. The results linked differentiation marker types regional (latitudinal) effects, which also correspond historical biogeography. Further, did not find any association between level at local scales for either species. However, but toads, have lower levels within‐population diversity, suggesting higher susceptibility negative urbanization. A decreasing diversity increasing was found MHC while relationship differed regions. populations. Although environment analyses data, LFMM BayPass, revealed numerous (219 B. 7040 L. ) statistically associated a marked lack repeatability regions, multifaceted natural selection elicited by life city.

Language: Английский

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Landscape connectivity and genetic structure of animal populations in urban ponds

Conservation Genetics, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Language: Английский

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Comparative Transcriptomic Reveals Greater Similarities in Response to Temperature Than to Invasive Alien Predator in the Damselfly Ischnura elegans Across Different Geographic Scales

Evolutionary Applications, Journal Year: 2024, Volume and Issue: 17(9)

Published: Sept. 1, 2024

The impact of global changes on populations may not be necessarily uniform across a species' range. Here, we aim at comparing the phenotypic and transcriptomic response to warming an invasive predator cue in different geographic scales damselfly

Language: Английский

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Contrasting patterns of spatial genetic structure in endangered southern damselfly (Coenagrion mercuriale) populations facing habitat fragmentation and urbanisation

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

Published: May 5, 2024

Abstract Aim Human-induced environmental changes result in habitat loss and fragmentation, impacting wildlife population genetic structure evolution. Urbanised geographically peripheral areas often represent unfavourable environments, reducing connectivity among populations causing higher differentiation lower intra-population diversity. We examined how geographic peripherality anthropogenic pressures affect diversity the protected southern damselfly ( Coenagrion mercuriale , Odonata), which has low dispersal capabilities specific requirements whose are declining. Location studied two areas: one semi-natural habitats at periphery of species range (northern France) other more central to species’ range, an urbanised area surrounding city Strasbourg (Alsace, eastern France). Methods genotyped 2743 individuals from 128 using eleven microsatellite loci. analysed spatial distribution neutral (allelic richness, heterozygosity, levels inbreeding, relatedness), extent differentiation, affiliations (sPCA analyses) within areas. also fine-scale patterns gene flow Alsace by investigating isolation distance estimating effective migration surfaces (EEMS method). Results Northern showed than Alsacian populations. Although located anthropised habitats, high flow, with events mainly occurring overland not restricted watercourses. However, highly negatively impacted nearby increasing differentiation. Main conclusions These results need for management action restoring breeding sites creating migratory corridors our highlighted resilience facing strong urbanisation pressures.

Language: Английский

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Contrasting patterns of spatial genetic structure in endangered southern damselfly (Coenagrion mercuriale) populations facing habitat fragmentation and urbanisation

Diversity and Distributions, Journal Year: 2024, Volume and Issue: 30(10)

Published: July 11, 2024

Abstract Aim Human‐induced environmental changes result in habitat loss and fragmentation, impacting wildlife population genetic structure evolution. Urbanised geographically peripheral areas often represent unfavourable environments, reducing connectivity among populations causing higher differentiation lower intra‐population diversity. We examined how geographic peripherality anthropogenic pressures affect diversity the protected southern damselfly ( Coenagrion mercuriale , Odonata), which has low dispersal capabilities specific requirements whose are declining. Location studied two areas: one semi‐natural habitats at periphery of species range (northern France) other more central to species' range, an urbanised area surrounding city Strasbourg (Alsace, eastern France). Methods genotyped 2743 individuals from 128 using 11 microsatellite loci. analysed spatial distribution neutral (allelic richness, heterozygosity, levels inbreeding relatedness), extent affiliations (sPCAs) within areas. also fine‐scale patterns gene flow Alsace by investigating isolation distance estimating effective migration surfaces (EEMS) method. Results Northern showed than Alsacian populations. Although located anthropised habitats, high flow, with events mainly occurring overland not restricted watercourses. However, highly negatively impacted nearby increasing differentiation. Main Conclusions These results need for management action restoring breeding sites creating migratory corridors our highlighted resilience facing strong urbanisation pressures.

Language: Английский

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Insect responses to seasonal time constraints under global change are facilitated by warming and counteracted by invasive alien predators

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 19, 2024

Abstract In seasonal environments, organisms with complex life cycles not only contend time constraints (TC) but also increasingly face global change stressors that may interfere responses to TC. Here, we tested how warming and predator stress imposed during the egg larval stages shaped history behavioural TC in temperate damselfly Ischnura elegans . Eggs from early late clutches season were subjected ambient 4 °C temperature presence or absence of cues perch signal crayfish. After hatching, larvae retained at same thermal regime, treatment was continued up emergence. The eggs decreased their development time, especially under when exposed cues. However, increased cues, crayfish survival as indicating a carry-over effect. additively reduced Independent TC, cue effects on stronger than stage. individuals expressed lower mass emergence, which mirrored size difference between field-collected mothers. Warming caused higher boldness showed number moves, whereas boldness. There no effect behaviour. results indicate compensate for laying, is facilitated counteracted predation risk, by

Language: Английский

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