Effect of Environmental Conditions on Flight Capacity in Mountain Pine Beetle (Coleoptera: Curculionidae: Scolytinae)

Wijerathna, Asha; Evenden, Maya L.

doi:10.1007/s10905-020-09760-y

Cited by 3 publications

(3 citation statements)

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“…Most of beetles have difficulty traveling long distances (Ribak et al, 2013;Chen and Jackson, 2017;Javal et al, 2018). The beetle's flight capacity is affected by environmental factors such as temperature, precipitation, elevation, and wind, so a significant influence produced by climate change on beetle dispersal and communication (Atkins, 1961;Evenden et al, 2014;Jones et al, 2019;Wijerathna and Evenden, 2020). This is also an important reason why the beetle's suitable habitat is threatened.…”

Section: Discussionmentioning

confidence: 99%

Spatial dynamic simulation of beetles in biodiversity hotspots

He,

Bai,

et al. 2024

Front. Ecol. Evol.

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IntroductionColeoptera is the most species-rich order of animals with the widest distribution area; however, little is known about its global suitability distribution, and a substantial number of species are experiencing silent extinction. Most of Earth’s biocommunities are concentrated in biodiversity hotspots, and these hotspots receive the largest investment of conservation funds. The survival of beetles is closely related to the richness of biodiversity, so habitat loss in hotspots results in a high extinction risk for beetles.MethodsWe used the MaxEnt model to simulate the spatial suitable distribution in six time periods (1970-1980, 1980-1990, 1990-2000, 2000-2010, 2010-2020, and 1970-2020). Furthermore, we determined the priority suitable regions in hotspots after coupling the current biodiversity zones and evaluated the congruence between the suitable habitat of beetles and hotspots.ResultsThe results revealed that less than 30% of suitable regions were located in hotspots, and approximately 49.08% of the suitable habitat remained constant in all six periods, and can be regarded as climatically stable refugia. The Mediterranean Basin had the largest suitable area in each period and was always ranked first; other regions, such as Indo-Burma, Irano-Anatolian, and Mesoamerica, also had large areas of suitable habitat. Nine excellent, ten stable, and seventeen lower hotspots were identified based on their dynamic changes in 36 hotspots.DiscussionBased on these results, corresponding planning and management measures should be implemented in different biodiversity hotspots according to the changes in geographic distribution. In this paper, we propose practical advice for different regions to improve isolated and fragmented habitats, which will support the conservation of Coleoptera taxa and the restoration of biodiversity.

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Section: Discussionmentioning

confidence: 99%

Spatial dynamic simulation of beetles in biodiversity hotspots

He,

Bai,

et al. 2024

Front. Ecol. Evol.

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“…The low and negative correlation between the number of Scolytinae captured and the wind speed, in the experiment 1, can be explained by the reduced variation in this parameter during the period of collection of these insects (Martínez et al, 2020). On the other hand, the high and positive correlation in the experiment 2 was expected as this variable increases the dispersion of attractive substances and, consequently, the attraction of Scolytinae (Salom and McLean 1991;Wijerathna and Evenden, 2020). The influence of environmental variables depends on Scolytinae species and where these insects are collected (Rocha et al, 2011a, b).…”

Section: Influence Of Climate Factorsmentioning

confidence: 91%

“…The average wind speed, during the experiment was 1.82 m/s to 2.17 m/s in the months with the highest Scolytinae collection. Generally, wind speed is inversely correlated with the collection of these insects, but they can fly in the presence or absence of wind (Wijerathna and Evenden, 2020). Climatic variations influence plant development, directly affecting the diversity and number of Scolytinae due to the associations between these beetles and their host plants (Cajaiba et al, 2018).…”

Section: Influence Of Climate Factorsmentioning

confidence: 99%

Increased capture efficiency of Scolytinae with modified semi-funnel trap model

et al. 2024

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Scolytinae species that, in high populations, can damage reducing wood production in forest crops. These beetles are monitored with traps baited with ethanol and increasing their efficiency can improve the integrated management of these insects. The objective was to evaluate the increase in the capture efficiency of Scolytinae with a semi-funnel trap model, in two experiments, one including wooden elements and other increasing the flight interception area and to correlate the numbers of these beetles collected with climatic factors. In the experiment 1, Eucalyptus urophylla S. T. Blake slats were directly attached to the collector flask and in another treatment, in addition to these slats, Cedrela sp. strips were inserted inside the bait holding hose. In the experiment 2, the insect interception area in the trap, originally 480 cm2, was expanded to 1,200 cm2 and compared with the model Pet–Santa Maria trap with an interception area of 550 cm2. Weekly collections were carried out between May 2018 and June 2019. The beetles collected were taken to the Wood Biodeterioration Laboratory of the Federal Rural University of Rio de Janeiro (UFRRJ) where they were sorted, identified at family level, counted and their number correlated with climatic factors. Statistical analyzes of the collected data were processed by the BioStat® 5.3 program. In the experiment 1 were collected 869 Scolytinae. The numbers of beetles collected per trap without modification, with E. urophylla slats and E. urophylla slats + Cedrela sp. strips were similar, 7.3 ± 3.8, 7.8 ± 6.2 and 7.7 ± 5.0 respectively. In the experiment 2 were collected 4,398 Scolytinae. Increasing the interception area of the beetles increased the efficiency of the semi-funnel trap, with 42.7 ± 20.5 Scolytinae collected compared to the original semi-funnel trap, 28.6 ± 12.6 and the Pet–Santa Maria, 20.4 ± 10.4, per trap. The number of Scolytinae did not correlate with climatic factors in the experiment 1 and it was correlated with temperature, relative humidity and wind speed, but not with precipitation, in the 2. The incorporation of E. urophylla slats or Cedrela sp. strips in the semi-funnel trap did not increase the number of beetles collected, but, the increase in the flight interception area and the temperature, relative humidity and wind speed were correlated with the number of beetles collected.

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