Population growth performance of Panonychus ulmi Koch (Acarina: Tetranychidae) on different fruit trees

2021 ◽  
Author(s):  
Ismail Kasap ◽  
Remzi Atlihan
Keyword(s):  
Population Growth ◽  
Host Plants ◽  
Prunus Avium ◽  
Panonychus Ulmi ◽  
Intrinsic Rate Of Increase ◽  
Pest Species ◽  
Finite Rate ◽  
Net Reproductive Rate ◽  
European Red Mite ◽  
Rate Of Increase

The European red mite, Panonychus ulmi (Acari: Tetranychidae) is an important pest species on deciduous plants in Turkey, especially on apple. In this study, development, survival, and reproduction of European red mite, P. ulmi were studied on different host plants under laboratory conditions (25±2 °C,% 60±10 RH and16:8 L:D photoperiod). Population performance of P. ulmi was obtained on its different host plants including apple (Malus communis L.), quince (Cydonia oblonga Mill.), cherry (Prunus avium L.), and sour cherry (Prunus cerasus L). The life history raw data of P. ulmi were analyzed by using the age-stage, two-sex life table. Results indicated that the highest net reproductive rate, intrinsic rate of increase, and finite rate of increase as well as the longest mean generation time, were obtained on apple cv. Starking delicious. The population projection simulated by using life tables based on the 0.025th and 0.975th bootstrap results of the finite rate of increase displayed the same trend with population growth parameters. Results suggested that apple cv. Starking Delicious was the favorable host for P. ulmi, however, there is potential for the pest to become a serious pest on other host plants tested under favorable conditions.

Development, survival and reproduction of a potential biological control agent, Lasioseius japonicus Ehara (Acari: Blattisociidae), on eggs of Drosophila melanogaster (Diptera: Drosophilidae) and Sitotroga cerealella (Lepidoptera: Gelechiidae)

2020 ◽  
Vol 25 (8) ◽  
pp. 1461-1471
Author(s):  
Lixia Xie ◽  
Na Zhang ◽  
Xinran Wu ◽  
Kai Liu ◽  
Chenlin Liu ◽  
...  
Keyword(s):  
Generation Time ◽  
Intrinsic Rate ◽  
Reproductive Rate ◽  
Intrinsic Rate Of Increase ◽  
Sitotroga Cerealella ◽  
Finite Rate ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Survival And Reproduction ◽  
The Mean

Lasioseius japonicus is a species of soil-dwelling predatory mite with great potential for controlling insect pests and has a broad application prospect in biological control. This study was conducted under indoor conditions to explore the development, survival and reproduction of L. japonicus on two diets. Through the construction of two-sex life table of L. japonicus, it was revealed that, when it preyed on eggs of Drosophila melanogaster, the intrinsic rate of increase (r) was 0.2614 d-1, the net reproductive rate (R0) was 57.76 offspring, the finite rate of increase (λ) was 1.2988 d-1, and the mean generation time (T) was 15.49 d. When preying on eggs of Sitotroga cerealella, the intrinsic rate of increase (r) of L. japonicus was 0.1560 d-1, the net reproductive rate (R0) was 20.96 offspring, the finite rate of increase (λ) was 1.1690d-1, and the mean generation time (T) was 19.41 d. In addition, the life expectancy and population growth trend of L. japonicus were simulated based on the above two alternative prey species. The results showed that feeding on the eggs of D. melanogaster is more beneficial to the growth and reproduction of L. japonicus.

scholarly journals Artificial Diet Influences Population Growth of the Root Maggot Bradysia impatiens (Diptera: Sciaridae)

2020 ◽  
Vol 20 (5) ◽  
Author(s):  
Yuping Gou ◽  
Peter Quandahor ◽  
Kexin Zhang ◽  
Sufan Guo ◽  
Qiangyan Zhang ◽  
...  
Keyword(s):  
Survival Rate ◽  
Population Growth ◽  
Artificial Diet ◽  
Population Expansion ◽  
Intrinsic Rate Of Increase ◽  
Artificial Diets ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Bradysia Impatiens ◽  
Root Maggot

Abstract In order to investigate the effects of artificial diets on the population growth of root maggot Bradysia impatiens, its population growth parameters were assayed on eight artificial diets (Diet 1, D2, D3, D4, D5, D6, D7, and D8). Results showed that developmental duration from egg to pupa was successfully completed on all eight artificial diets. However, the egg to pupal duration was shortest, while the survival rate of four insect stages was lowest when B. impatiens was reared on D1. When B. impatiens was reared on D7 and D8, the survival rate, female longevity, and female oviposition were higher than those reared on other diets. When B. impatiens was reared on D7, the intrinsic rate of increase (rm = 0.19/d), net reproductive rate (R0 = 39.88 offspring per individual), and finite rate of increase (λ = 1.21/d) were higher for its population growth with shorter generation time (T = 19.49 d) and doubling time (Dt = 3.67 d). The findings indicate that the D7 artificial diet is more appropriate for the biological parameters of B. impatiens and can be used an indoor breeding food for population expansion as well as further research. We propose that vitamin C supplement added to the D7 is critical for the improvement of the B. impatiens growth.

scholarly journals Biotic potential and reproductive parameters of Spodoptera cosmioides (Walker) (Lepidoptera: Noctuidae) in the laboratory

2019 ◽  
Vol 79 (3) ◽  
pp. 488-494 ◽  
Author(s):  
A. Specht ◽  
V. F. Roque-Specht
Keyword(s):  
Intrinsic Rate ◽  
Reproductive Rate ◽  
Intrinsic Rate Of Increase ◽  
Reproductive Parameters ◽  
Finite Rate ◽  
Net Reproductive Rate ◽  
Biotic Potential ◽  
Rate Of Increase ◽  
The Mean ◽  
Lepidoptera Noctuidae

Abstract In this study we evaluate the biotic potential and reproductive parameters of Spodoptera cosmioides (Walker, 1858) under controlled conditions (25 ± 1 °C, 70 ± 10% RH and 14 hour photophase). Females, on average, (14.433 days) did not live significantly longer than their male counterparts (13.100 days). The mean durations of the pre-oviposition, oviposition and post-oviposition periods were 2.767, 10.600 and 1.067 days, respectively. The mean fecundity of females was 5,073.533 eggs and the mean fertility was 5,021.027 larvae. On average, females copulated 1.167 times. Fecundity was positively correlated with the number of copulations (r = 0.583, P <0.001). The number of copulations, however, was negatively correlated whit the duration of the pre-oviposition (r = -0.560, P = 0.007) and oviposition (r = -0.479, P = 0.048) periods, and overall longevity (r = -0.512, P = 0.031). The biotic potential was estimated at 6.547 x 1021 individuals/female/year. The net reproductive rate (Ro) was 2,193.722 times per generation and the mean generation time (T) was 46.407 days. The intrinsic rate of increase (rm) was 0.166, with a finite rate of increase (λ) of 1.180, per week.

scholarly journals Demographic parameters of cowpea aphids on advanced semi-erect cowpea lines

2018 ◽  
Vol 53 (8) ◽  
pp. 900-908 ◽  
Author(s):  
Leandro Carvalho da Silva ◽  
Daniel Rodrigues Nere ◽  
Ervino Bleicher ◽  
Antônio Vinícius Correa Barbosa ◽  
Eraldo José Madureira Tavares
Keyword(s):  
Reproductive Potential ◽  
Intrinsic Rate ◽  
Reproductive Rate ◽  
Life Tables ◽  
Intrinsic Rate Of Increase ◽  
Demographic Parameters ◽  
Screening Assay ◽  
Finite Rate ◽  
Net Reproductive Rate ◽  
Rate Of Increase

Abstract: The objective of this work was to evaluate the resistance of advanced semi-erect cowpea (Vigna unguiculata) lines, by means of a screening assay for resistance and the elaboration of fertility-life tables of Aphis craccivora (Hemiptera: Aphididae). The experiments were carried out in a screenhouse. For the resistance trial, 15 advanced cowpea lines were used, as well as two standard genotypes for resistance and two for susceptibility, which were arranged in six blocks. After resistance was determined, two lines with the highest and lowest resistance were selected for the development of the fertility-life tables which were used to estimate demographic parameters. The MNCO4-762F-03 and MNCO4-762F-09 cowpea lines were classified as resistant, for which cowpea aphids showed the lowest values (in parentheses, respectively) for: net reproductive rate (RO = 3.0 and 2.5), intrinsic rate of increase (rm = 0.16 and 0.15), and finite rate of increase (λ = 1.18 and 1.16). The highest values were obtained for the 'Vita-7', MNCO4-795F-168, and 'BRS Tumucumaque' genotypes. The MNCO4-762F-03 and MNCO4-762F-09 lines show antibiosis-type resistance, which directly affects the reproductive potential of the cowpea aphid population.

BIOLOGY, LIFE TABLES, AND INTRINSIC RATE OF INCREASE OF THE EUROPEAN RED MITE, PANONYCHUS ULMI (ACARINA: TETRANYCHIDAE)

1981 ◽  
Vol 113 (1) ◽  
pp. 65-71 ◽  
Author(s):  
H. J. Herbert
Keyword(s):  
Intrinsic Rate ◽  
Life Tables ◽  
Panonychus Ulmi ◽  
Intrinsic Rate Of Increase ◽  
Threshold Temperature ◽  
Preoviposition Period ◽  
European Red Mite ◽  
Generation Times ◽  
Rate Of Increase ◽  
Net Reproduction

AbstractDevelopment of the European red mite, Panonychus ulmi (Koch), in Nova Scotia was studied at three constant temperatures to construct a life table and establish the intrinsic rate of development. The threshold temperature for development was 10.6°C. The duration from the beginning of the egg stage to adult for females was 31.2, 20.5, and 14.0 days and for males 21.9, 19.6, and 12.8 days at 15°, 18°, and 21°C, respectively. The duration in degree-days above 10.6°C for females was 137.3, 151.7, and 145.2 and for males 128.0, 144.9, and 133.1 at the same three temperatures. The duration of the preoviposition period decreased, duration of the oviposition period remained constant, and the number of eggs laid increased with temperature. Life tables were constructed at 15°, 18°, and 21°C; the intrinsic rates of increase were 0.56,.092, and.134; net reproduction rates 10.06, 13.50, and 17.37; and mean generation times were 41.4, 28.3, and 21.3 days, respectively.

scholarly journals Biological Features and Population Growth of Two Southeastern European Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) Strains

Insects ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 218 ◽  
Author(s):  
Nickolas G. Kavallieratos ◽  
Goran Andrić ◽  
Marijana Pražić Golić ◽  
Erifili P. Nika ◽  
Anna Skourti ◽  
...  
Keyword(s):  
Population Growth ◽  
Reproductive Rate ◽  
Tribolium Confusum ◽  
Intrinsic Rate Of Increase ◽  
Net Reproductive Rate ◽  
White Rice ◽  
Biological Features ◽  
Rate Of Increase ◽  
Potential Population ◽  
Coleoptera Tenebrionidae

A study of the biological features and the potential population growth between two laboratory strains of the confused flour beetle, Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) from Greece and Serbia is conducted on cracked barley and cracked white rice. The results show that, at a species level, T. confusum is able to complete development on cracked barley but not on cracked white rice. Therefore, cracked white rice proves to be an unsuitable commodity for T. confusum. Larval development on cracked barley is significantly shorter for the Serbian compared to the Greek strain (37.7 and 49.7 days, respectively), but pupal development does not differ between the two strains (6.2 days for both strains). Additionally, male longevity does not differ between the Greek and Serbian strains (144.4 and 151.4 days, respectively), while female longevity is significantly shorter for the Serbian (151.7 days) compared to the Greek strain (186.6 days). Fecundity does not differ between the two strains (11.3 and 17.7 eggs/female for the Greek and the Serbian strain, respectively), whilst survival is higher for the Serbian strain on both tested commodities. The values of the net reproductive rate, the intrinsic rate of increase and the finite rate of increase on cracked barley are significantly higher for the Serbian (7.27 females/female, 0.025 female/female/day and 1.026, respectively) compared to the Greek strain (2.91 females/female, 0.014 females/female/day and 1.014, respectively). It therefore is expected that different strains of T. confusum may exhibit variable phenology as well as potential population growth. Additionally, we expect our results to have bearing on the management of this species.

scholarly journals Effects of Five Host Plant Species on the Life History and Population Growth Parameters of Myzus persicae (Hemiptera: Aphididae)

2019 ◽  
Vol 19 (5) ◽  
Author(s):  
Feng Hong ◽  
Hong-Liang Han ◽  
Po Pu ◽  
Dong Wei ◽  
Jia Wang ◽  
...  
Keyword(s):  
Life History ◽  
Myzus Persicae ◽  
Host Plants ◽  
Growth Parameters ◽  
Green Peach Aphid ◽  
Reproductive Rate ◽  
Intrinsic Rate Of Increase ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Wide Range

Abstract The green peach aphid, Myzus persicae Sulzer (Hemiptera: Aphididae), is an important agricultural pest with a wide range of host plants. To study effects of host species on the life history traits of M. persicae, aphids were individually reared on five host plants: Brassica campestris L. (Brassicales: Brassicaceae), Capsicum annuum L. (Tubiflorae: Solanaceae), Nicotiana tabacum L. (Tubiflorae: Solanaceae), Raphanus sativus L. (Brassicales: Brassicaceae), and Vicia faba L. (Rosales: Leguminosae). TWOSEX-MSchart software was used for the statistical analysis according to the age-stage, two-sex life table theory. The results showed that the shortest preadult stage and adult/total prereproductive period of M. persicae were 6.48, 0.19, and 6.67 d on V. faba, respectively. While the adult and total longevity of M. persicae on R. sativus (25.00 and 31.62 d) and N. tabacum (24.40 and 30.56 d) were significantly longer than that on the other three hosts, as was the reproductive period. The fecundity of M. persicae on R. sativus (80.83 nymphs per female), N. tabacum (71.72 nymphs per female), and V. faba (70.39 nymphs per female) was also greater than that on B. campestris and C. annuum. It was demonstrated that V. faba, R. sativus, and N. tabacum were more suitable plants for the growth of M. persicae exhibiting a shorter preadult stage, longer longevity, and greater fecundity than the remaining two species, as confirmed by the higher intrinsic rate of increase and net reproductive rate.

SOME ASPECTS OF THE BIOLOGY AND A LABORATORY LIFE TABLE OF THE ACARINE PREDATOR ZETZELLIA MALI

1977 ◽  
Vol 109 (9) ◽  
pp. 1275-1281 ◽  
Author(s):  
N. D. White ◽  
J. E. Laing
Keyword(s):  
Life Table ◽  
Age Distribution ◽  
Male Offspring ◽  
Panonychus Ulmi ◽  
Intrinsic Rate Of Increase ◽  
Laboratory Population ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Predaceous Mites ◽  
Zetzellia Mali

AbstractA rearing technique was developed to study various aspects of the biology of Zetzellia mali (Ewing) in the laboratory. The rate of development of Z. mali feeding upon the phytophagous mite Aculus schlechtendali (Nalepa) was determined at 9°±1°C and 14°±1°C (56% R.H.), 19°±1°C (33%, 56%, 76%, and 97% R.H.), and 24°±1°C (51% R.H.). The average preovipositional and ovipositional periods for 16 female Z. mali were 1.5 and 9.4 days respectively and an average of 1.7 eggs per day were laid by these females. Z. mali was found to be arrhenotokous with unmated females producing only male offspring and mated females producing 2.6 females: 1 male offspring. Diapause in Z. mali was broken at 24°±1°C, 16L:8D) with egg deposition beginning after 11 days (51% and 76% R.H.) or 12 days (33% and 96% R.H.) when the adults feed upon the winter eggs of Panonychus ulmi (Koch).A life table was constructed for Z. mali and the intrinsic rate of increase (rm) was determined to be 0.109 female offspring/female/day. The mean generation time (T) was calculated to be 21.0 days and the net reproductive rate (R0) during this time was 10.04. The theoretical stable age distribution of the laboratory population of Z. mali at 19°±1°C, 56% R.H. was 59% eggs, 15% larvae, 7% protonymphs, 6% deutonymphs, and 13% adults.Comparison of the intrinsic rates of increase and prey consumption of Z. mali and other species of predaceous mites indicate that Z. mali is not as efficient a regulating agent of phytophagous mites as the phytoseiids.

Can the prey species Raoiella indica Hirst (Acari: Tenuipalpidae) support the development and reproduction of Neoseiulus barkeri Hughes (Acari: Phytoseiidae)?

2020 ◽  
Vol 25 (8) ◽  
pp. 1485-1494
Author(s):  
Rosenya Michely Cintra Filgueiras ◽  
Bruna Weida Rabelo Da Silva ◽  
Eduardo Pereira De Sousa Neto ◽  
Jairo De Almeida Mendes ◽  
José Wagner Da Silva Melo
Keyword(s):  
Life History ◽  
Prey Species ◽  
Developmental Stages ◽  
Population Doubling ◽  
Intrinsic Rate Of Increase ◽  
Pest Species ◽  
Net Reproductive Rate ◽  
Neoseiulus Barkeri ◽  
Rate Of Increase ◽  
Raoiella Indica

The potential of Neoseiulus barkeri Hughes (Acari: Phytoseiidae) as a biological control agent has been widely studied and demonstrated against several pest species, mainly against pest mites. However, its potential has not been assessed with tenuipalpid mites, which emerged as a threat to agriculture, especially in coconut and banana crops. The potential of natural enemies can be predicted through life history tests; thus, we conducted experiments to determine the life history parameters of N. barkeri that fed on tenuipalpid mite Raoiella indica Hirst (Acari: Tenuipalpidae) individuals of different developmental stages. Neoseiulus barkeri successfully completed its development by feeding on R. indica of all developmental stages; there were no differences in survivorship during the entire immature period (always above 95%) irrespective of the developmental stages of the R. indica used. The average oviposition period was 27 days with an average fecundity of 56.2 eggs/female. Positive ri values obtained for all prey developmental stages indicated that R. indica of all developmental stages is suitable to support the population growth of N. barkeri. Additionally, the life table parameters of N. barkeri recorded in this study [net reproductive rate (R0= 37.9 female/female), intrinsic rate of increase (rm = 0.22 female/female/day), finite rate of increase (λ = 1.24 female/female/day), mean generation time (T = 16.67 days), and population doubling time (DT = 3.18 days)] show that N. barkeri performed excellently when feeding on R. indica eggs. Our results show that the prey species R. indica is a suitable food source for the predatory species N. barkeri.

scholarly journals Effects of UV Radiation on Egg Hatching Population Growth and Reproductive Parameters of Indianmeal Moth Plodia interpunctella (Hübner) (Lepidoptera: Pyralidae)

2020 ◽  
pp. 130-142
Author(s):  
Akram Bakhshi ◽  
Ali Asghar Talebi ◽  
Yaghoub Fathipour ◽  
Ali Mirshekar
Keyword(s):  
Population Growth ◽  
Exposure Time ◽  
Growth Parameters ◽  
Plodia Interpunctella ◽  
Reproductive Rate ◽  
Intrinsic Rate Of Increase ◽  
Egg Hatching ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Population Growth Parameters

In this research, three age groups of Plodia interpunctella (Hübner) eggs (1-, 2- and 3-day-old eggs) were exposed to ultraviolet irradiation (UVC) with 254nm wavelength for 0.5, 1, 1.5, 2, 4, 8, 16, 24, 32 and 40 minutes, under controlled conditions. The effect of UVC-irradiation on reproduction and population growth parameters investigated for eggs irradiated for 0.5, 1 and 1.5 minutes. The percentage of egg hatching decreased with increase in UVC exposure time, while for each exposure time, the older eggs were more sensitive than the younger ones. The results indicated that different exposure times of UVC-irradiation could affect the reproduction and population growth parameters. The highest value of net fertility rates was observed in 1, 2 and 3-day-old eggs which were treated with 0.5 min exposure. Both the intrinsic rate of increase (rm) and the net reproductive rate (R0) decreased with increasing exposure time from 0.5 to 1.5 min while the mean generation time (Tc) and doubling time (DT) increased within this irradiation range. The lowest amount of rm was obtained in 1, 2 and 3-day-old eggs which were treated with 1.5 min exposure time. The results showed that UVC-irradiation is an appropriate technique for controlling P. interpunctella.

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