Cooler and drier conditions increase parasitism in subtropical damselfly populations DOI Creative Commons
Md Kawsar Khan, Shatabdi Paul,

Mostakim Rayhan

et al.

Published: Sept. 22, 2023

Host-parasite interactions are impacted by climate, which may result variation of parasitism across landscapes and time. Understanding how varies these spatio-temporal scales is crucial to predicting organism will respond cope under a rapidly changing climate. Empirical work on climates limited. Here, we examine the seasons identify likely climatic factors that explain this using Agriocnemis femina damselflies Arrenurus water mite ectoparasites as host-parasite study system. We assessed in natural population subtropical climate between 2021-2023 calculated prevalence (percentage infected individuals) intensity (the number parasites an individual) different seasons. Parasite were greater during cooler (autumn winter) compared hotter (spring summer). Mean temperature precipitation negatively correlated with parasite whereas only mean was intensity. Tropical, Subtropical Mediterranean countries predicted experience extreme events (extreme temperature, less frequent drought) consequence anthropogenic change, our finding suggests could increase aquatic insects.

Language: Английский

Current evidence of climate‐driven colour change in insects and its impact on sexual signals DOI Creative Commons
Tangigul Haque, Md Kawsar Khan, Marie E. Herberstein

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(7)

Published: July 1, 2024

Abstract The colours of insects function in intraspecific communication such as sexual signalling, interspecific protection from predators, and physiological processes, thermoregulation. expression melanin‐based is temperature‐dependent thus likely to be impacted by a changing climate. However, it unclear how climate change drives changes body wing colour may impact insect physiology their interactions with conspecifics (e.g. mates) or heterospecific predators prey). aim this review synthesise the current knowledge consequences climate‐driven on insects. Here, we discuss environmental factors that affect colours, then outline adaptive mechanisms terms phenotypic plasticity microevolutionary response. Throughout climate‐related physiology, con‐and‐heterospecifics.

Language: Английский

Citations

6
Latitudinal gradient of thermal safety margin in an Australian damselfly: implications for population vulnerability DOI Creative Commons
Tangigul Haque, Shatabdi Paul, Marie E. Herberstein

et al.

Royal Society Open Science, Journal Year: 2025, Volume and Issue: 12(3)

Published: March 1, 2025

The thermal tolerance of species may be exceeded by the predicted temperature increases and thus contribute to extinction. However, impact is thought vary between climate regions across latitudes. Here, we aim establish vulnerability an ectothermic insect a warming estimating safety margin in Ischnura heterosticta damselflies. We measured critical maximum (CTmax) along latitudinal gradient 17° from 21 populations eastern coast Australia. Our results showed that damselflies inhabiting tropical had higher CTmax than temperate increased with increasing mean decreasing latitude. further found positive correlation damselfly parasite number temperature. Body size, body condition sex no on CTmax. projections will narrower tropics compared under 2.6°C annual (future projected - current) increase for years 2061-2080. Therefore, are likely more vulnerable change-driven extinction even though they have relatively Nevertheless, behaviour, adaptation plasticity might mitigate vulnerability.

Language: Английский

Citations

0
Male–male interactions select for conspicuous male coloration in damselflies DOI
Md Kawsar Khan, Marie E. Herberstein

Animal Behaviour, Journal Year: 2021, Volume and Issue: 176, P. 157 - 166

Published: May 7, 2021

Language: Английский

Citations

13
Sex wars: a female genital spine forces male damselflies to shorten copulation duration DOI Creative Commons
Anais Rivas‐Torres, Viviana Di Pietro, Adolfo Cordero‐Rivera

et al.

Evolution, Journal Year: 2023, Volume and Issue: 77(7), P. 1659 - 1666

Published: April 25, 2023

Abstract In some species, males use weapons to harm females, increasing their short-term fitness. Here we show that females can genital adaptations against males. Females of the damselfly Enallagma cyathigerum have a conspicuous vulvar spine on eighth abdominal segment, which contacts with male during copulation. We tested 3 hypotheses for its function: it (a) inflicts damage copulation; (b) facilitates endophytic oviposition; and (c) stimulates copulation increase investment. found mated average 54 min control but increased 99 without spine. There was no evidence physical male’s seminal vesicle, shows 8- 18-folds, exactly where exhibited same egg-laying rates showed similar fecundity fertility. Longevity also in spineless females. contrast many species resist harassment by behavioral responses, morphological adaptation observed E. appears act as sexual weapon, allowing duration. suggest has evolved because conflict over mating

Language: Английский

Citations

5
Cooler and drier conditions increase parasitism in a subtropical damselfly population DOI Creative Commons
Shatabdi Paul,

Mostakim Rayhan,

Marie E. Herberstein

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(2)

Published: Jan. 31, 2024

Abstract Host–parasite interactions are impacted by climate, which may result in variation of parasitism across landscapes and time. Understanding how varies these spatio‐temporal scales is crucial to predicting organisms will respond cope under a rapidly changing climate. Empirical work on climates limited. Here, we examine the seasons identify likely climatic factors that explain this using Agriocnemis femina damselflies Arrenurus water mite ectoparasites as host–parasite study system. We assessed natural population Sylhet, Bangladesh located subtropical climate between 2021 2023. calculated prevalence (proportion infected individuals) intensity (the number parasites an individual) different seasons. Parasite were greater during cooler (autumn winter) compared hotter (spring summer). Mean temperature precipitation negatively correlated with parasite prevalence, whereas only mean was intensity. Tropical, mediterranean regions predicted experience extreme events (extreme temperature, less frequent drought) consequence anthropogenic change, our finding suggests might alter patterns aquatic insects.

Language: Английский

Citations

1
Parasite‐mediated sexual selection in a damselfly DOI Creative Commons
Md Kawsar Khan, Marie E. Herberstein

Ethology, Journal Year: 2022, Volume and Issue: 128(8), P. 572 - 579

Published: June 12, 2022

Abstract Sexual selection can improve population fitness and purge deleterious mutation from the gene pool by promoting condition‐dependent mate selection. One ecological factor that reduces individual condition is parasitism. Parasitism tends to increase hosts' load likely indicates inferior host genetic quality. Parasite‐mediated selection, therefore, should favour mating success of parasite‐resistant individuals over parasitised individuals. We tested this hypothesis in male Agriocnemis pygmaea damselflies, which are Arrenurus water mites. calculated frequency (i.e. proportion parasitism) intensity number parasites per individual) parasitism free‐flying males copula seven natural populations. predicted observed will be less than expected based on population. further parasite would lower caught single males. found were significantly non‐parasitised males, independent their occurrence frequency. However, there was no difference average between captured or Our study shows addition sexual a strong agent against implies it could promote local adaptation counteract driven extinction risks.

Language: Английский

Citations

6
Ontogenetic habitat shifts reduce costly male–male interactions DOI
Md Kawsar Khan, Marie E. Herberstein

Evolutionary Ecology, Journal Year: 2020, Volume and Issue: 34(5), P. 735 - 743

Published: Aug. 4, 2020

Language: Английский

Citations

7
Ontogenetic colour change of a sexual ornament in males of a damselfly: female mimicry, crypsis or both? DOI
Rodrigo Roucourt Cezário,

Eralci Moreira Therézio,

Alexandre Marletta

et al.

The Science of Nature, Journal Year: 2021, Volume and Issue: 109(1)

Published: Dec. 7, 2021

Language: Английский

Citations

4
Sexual and developmental variations of ecto-parasitism in damselflies DOI Creative Commons
Shatabdi Paul, Md Kawsar Khan, Marie E. Herberstein

et al.

PLoS ONE, Journal Year: 2022, Volume and Issue: 17(7), P. e0261540 - e0261540

Published: July 8, 2022

The prevalence and intensity of parasitism can have different fitness costs between sexes, across species developmental stages. This variation could arise because specific sexual differences in body condition, immunity, resistance. Theory predicts that the will be greater individuals with poor condition larger size. These predictions been tested verified vertebrates. In insects, however, contradictory evidence has found taxa. Here, we these on two Agriocnemis ( femina pygmaea ) damselflies, which are parasitized by Arrenurus water mite ectoparasites. We measured weight, total length, abdomen area thorax non-parasitized damselflies varied males females, immature females mature A . Then, calculated parasite prevalence, i.e., absence or presence parasites intensity, number per infected damselfly eleven natural populations both species. line to our predictions, observed than but no difference females. Furthermore, was higher Our result also showed frequency studied species, being study provides impacts stages differentially suggests may occur due sex, stage, species-specific resistance tolerance mechanism.

Language: Английский

Citations

3
Diet and body size modulate the remating behaviour of a predaceous ladybird, Coccinella transversalis (Fabricius) (Coleoptera, Coccinellidae) DOI Creative Commons

Mumtaj Jahan,

Ahmad Pervez

ENTOMON, Journal Year: 2024, Volume and Issue: 49(1), P. 75 - 86

Published: March 31, 2024

The nutritional condition and body size influence the mating female remating behaviour of a predaceous ladybird, Coccinella transversalis. When well-fed males were provided with females three different dietary conditions, viz. (i) well-fed, (ii) food-deprived (iii) honey-fed, ones most fecund highest percentage egg-viability least preoviposition period refusals, while showed vice-versa. However, honey-fed laid unfertile eggs after coercively males, resisted to remate, which gets strengthened in second trial. This indicates females’ modulates post-mating outcomes. adult was directly proportional reproductive output heavier showing high fecundity egg viability than lighter ones. Large remate larger smaller large mated females. Regardless body-size, resistance enhanced Both diet modulate re-mating C. transversalis, as greatly re-mate males.

Language: Английский

Citations

0