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Coleopterous predators of pine bark beetles in the last years of the outbreak recorded in Ukraine Cover

Coleopterous predators of pine bark beetles in the last years of the outbreak recorded in Ukraine

Folia Forestalia Polonica
Volume 64 (2022): Issue 3 (September 2022)
By:
Open Access
|Sep 2022

Figures & Tables

Figure 1

Population density of bark beetles in sample trees as the number of nuptial chambers per 1 dm2 of Scots pine bark sample (I. acum – Ips acuminatus; I. sexd. – Ips sexdentatus; both spec. – both species; boxes – standard error, bars – minimum–maximum)
Population density of bark beetles in sample trees as the number of nuptial chambers per 1 dm2 of Scots pine bark sample (I. acum – Ips acuminatus; I. sexd. – Ips sexdentatus; both spec. – both species; boxes – standard error, bars – minimum–maximum)

Figure 2

Mean frequency of occurrence of coleopterous predators in the bark samples (Th. form. – Thanasimus formicarius; Pl. elong – Platysoma elongatum; Rh. depr. – Rhizophagus depressus; Aul. ruf – Aulonium ruficorne; Cor. pini – Corticeus pini; Th. fem. –Thanasimus femoralis; Salp. ruf. – Salpingus ruficollis)
Mean frequency of occurrence of coleopterous predators in the bark samples (Th. form. – Thanasimus formicarius; Pl. elong – Platysoma elongatum; Rh. depr. – Rhizophagus depressus; Aul. ruf – Aulonium ruficorne; Cor. pini – Corticeus pini; Th. fem. –Thanasimus femoralis; Salp. ruf. – Salpingus ruficollis)

Location of inspected forest stands

State Forestry EnterpriseForestryLatitude, NLongitude, EAltitude, m a.s.l.Number of plotsNumber of gallery systems
SvesskyPrudishchenske51°57″17¢33°43″38¢159354
SvesskyOlynske51°56″51¢33°47″15¢1656110
Seredyno-BudskyKamyanske52°05″49¢33°53″06¢196236
Seredyno-BudskyGolubivske50°48″01¢34°25″10¢1706110
Seredyno-BudskyOchkinske52°13″36¢33°22″41¢130236
KrolevetskyDubovytske51°38″05¢33°34″21¢1627126
KrolevetskyGruzchanske51°12″32¢33°31″45¢158472
KrolevetskyKrolevetske51°33″10¢33°22″57¢166118
KrolevetskyKhreshchatynske51°38″23¢33°22″07¢154118
LebedinskyMezhyrichske50°41″58¢34°29″39¢145118
LebedinskyBorovenkivske50°27″52¢34°24″32¢142118
LebedinskyUkrainske50°29″28¢34°30″23¢140118
TrostyanetskyMakivske50°53″10¢34°97″15¢165118
TrostyanetskyLytovske50°36″15¢34°86″12¢143118
TrostyanetskyTrostyanetske50°28″30¢34°58″18¢118118
Total38688

Coleopterous predator–prey ratio in different parts of stem depending on health condition of the trees*

Sampled part of stemPredator–prey ratio by the health condition tree classes
4 – drying up5 – recently died6 – died over a year ago
Upper, thin bark0.0a1.9 ± 0.54c4.1 ± 0.70e
Transitional bark0.0a3.6 ± 0.76c8.3 ± 1.08f
Lower, thick bark16.1 ± 1.49b9.3 ± 0.59d7.0 ± 1.02f
All samples12.4 ± 1.17b7.1 ± 0.42g6.3 ± 0.53f

Species composition of coleopterous predators in different years of assessment

Predator speciesYears
201920202021
Upper stem part (thin bark)
Corticeus pini029.2 ± 9.28a0
Rhizophagus depressus0025.0 ± 9.68a
Platysoma elongatum041.6 ± 10.06a25.0 ± 9.68a
Aulonium ruficorne0035.0 ± 10.67a
Thanasimus formicarius029.2 ± 9.28a15.0 ± 7.98a
Middle stem part (transitional bark)
Corticeus pini020.0 ± 5.16a9.1 ± 6.13a
Rhizophagus depressus020.0 ± 5.16a13.6 ± 7.32a
Platysoma elongatum08.3 ± 3.57a27.3 ± 9.50b
Aulonium ruficorne020.0 ± 5.16a22.7 ± 8.93a
Thanasimus formicarius023.3 ± 5.46a18.2 ± 8.22a
Thanasimus femoralis08.3 ± 3.57a9.1 ± 6.13a
Lower stem part (thick bark)
Corticeus pini3.6 ± 2.52a20.2 ± 2.63b20.7 ± 4.48b
Rhizophagus depressus1.8 ± 1.80a19.3 ± 2.59b17.1 ± 4.16b
Platysoma elongatum41.8 ± 6.65c6.4 ± 1.61d12.2 ± 3.61e
Aulonium ruficorne18.2 ± 5.20b36.5 ± 3.15f40.2 ± 5.42f
Salpingus ruficollis00.9 ± 0.60g0
Thanasimus formicarius25.5 ± 5.87h10.7 ± 2.03i8.5 ± 3.09i
Thanasimus femoralis9.1 ± 3.88j6.0 ± 1.56j1.2 ± 1.21k

HCI for Scots pine trees sampled in different stem parts

Sampled part of stemMean HCI ± st. err. for years*
201920202021
Upper (thin bark)4.4 ± 0.13a (27)5.3 ± 0.07b (72)6.0 ± 0.0c (30)
Middle (transitional bark)4.4 ± 0.13a (27)5.3 ± 0,07b (72)6.0 ± 0,0c (30)
Lower (thick bark)4.5 ± 0.08a (72)4.7 ± 0.04d (265)5.3 ± 0.05e (90)
All samples4.5 ± 0.06a (126)4.9 ± 0.04f (409)5.6 ± 0.04g (150)

Species composition of coleopterous predators in sample trees of different health condition

Predator speciesHealth condition classes
4 – drying up5 – recently died6 – died over a year ago
1234
Upper stem part (thin bark)
Corticeus pini058.4 ± 14.23a15.6 ± 6.41b
Rhizophagus depressus0034.4 ± 8.40c
Platysoma elongatum033.3 ± 13.60c21.9 ± 7.31c
Aulonium ruficorne0028.1 ± 7.95d
Thanasimus formicarius08.3 ± 7.96e0
Middle stem part (transitional bark)
Corticeus pini045.5 ± 10.62a7.3 ± 3.50b
Rhizophagus depressus022.7 ± 8.93c18.2 ± 5.20c
Platysoma elongatum00.020.0 ± 5.39c
Aulonium ruficorne013.6 ± 7.32d25.5 ± 5.87d
Thanasimus formicarius018.2 ± 8.22d25.5 ± 5.87d
Thanasimus femoralis00.03.6 ± 2.52e
Lower stem part (thick bark)
Corticeus pini15.3 ± 3.64a20.0 ± 2.67a4.7 ± 3.21e
Rhizophagus depressus13.3 ± 3.43a18.7 ± 2.60a11.6 ± 4.89a
Platysoma elongatum9.2 ± 2.92a15.6 ± 2.42a9.3 ± 4.43a
Aulonium ruficorne40.8 ± 4.96b28.0 ± 2.99c58.1 ± 7.52b
Salpingus ruficollis2.0 ± 1.43d0.0d0.0d
Thanasimus formicarius14.3 ± 3.53a13.3 ± 2.27a4.7 ± 3.21e
Thanasimus femoralis5.1 ± 2.22d4.4 ± 1.37d11.6 ± 4.89d

Calculation of Sorenson–Chekanovsky index (Csc) for predator complexes in the different parts of stem, class of tree health condition and years of assessment

Group of samples ASpecies number in AGroup of samples BSpecies number in BNumber of common species for A and BCsc
HCCStem partYearHCCStem partYear
AllUAll5AllLAll750.83
AllUAll5AllMAll650.91
AllMAll6AllLAll760.92
4AllAll75AllAll660.92
4AllAll76AllAll660.92
5AllAll66AllAll661.00
AllAll20196AllAll2020760.92
AllAll20196AllAll2021661.00
AllAll20207AllAll2021660.92
5U202035M2020420.57
5U202035L2020630.67
5M202045L2020640.80
6U202026M2020520.57
6U202026L2020520.57
6M202056L2020540.80
6U202146M2021640.80
6U202146L2021540.89
6M202166L2021550.91

Coleopterous predator–prey ratio in different years and parts of stem

Sampled part of stemPredator–prey ratio by years, %
201920202021
Upper (thin bark)0.0a2.75 ± 0.55b5.78 ± 1.25c
Middle (transitional bark)0.0a7.46 ± 0.93d7.94 ± 1.62cd
Lower (thick bark)7.27 ± 0.94e12.56 ± 0.77g7.95 ± 0.84d
All samples7.27 ± 0.71e8.97 ± 0.48d7.50 ± 0.65d
DOI: https://doi.org/10.2478/ffp-2022-0016 | Journal eISSN: 2199-5907 | Journal ISSN: 0071-6677
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Language: English
Page range: 161 - 172
Submitted on: Mar 17, 2022
Accepted on: Jul 8, 2022
Published on: Sep 22, 2022
Published by: Forest Research Institute
In partnership with: Paradigm Publishing Services
Publication frequency: 4 times per year
Keywords:
forest,
Sumy region of Ukraine,
frequency of occurrence,
health condition class,
nuptial chambers,
predator/prey ratios
Related subjects:
Life sciences,
Plant science,
Medicine,
Veterinary medicine

© 2022 Valentyna Meshkova, Alla Vorobei, Anastasiya Omelich, published by Forest Research Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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