scholarly journals Effect of Six Host Plant Species on the Life History and Population Growth Parameters ofRastrococcus iceryoides(Hemiptera: Pseudococcidae)

2013 ◽  
Vol 96 (3) ◽  
pp. 1030-1041 ◽  
Author(s):  
Chrysantus M. Tanga ◽  
Sunday Ekesi ◽  
P. Govender ◽  
Samira A. Mohamed
Keyword(s):  
Life History ◽  
Population Growth ◽  
Host Plant ◽  
Plant Species ◽  
Growth Parameters ◽  
Host Plant Species ◽  
Population Growth Parameters

Biology and population growth parameters of the cotton mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae), on five host plant species

2018 ◽  
Vol 68 (4) ◽  
pp. 333-352 ◽  
Author(s):  
V.S. Nagrare ◽  
Bhausaheb Naikwadi ◽  
Vrushali Deshmukh ◽  
S. Kranthi
Keyword(s):  
Population Growth ◽  
Host Plant ◽  
Plant Species ◽  
Host Plants ◽  
Growth Parameters ◽  
Phenacoccus Solenopsis ◽  
Rate Of Increase ◽  
Cotton Mealybug ◽  
China Rose ◽  
Population Growth Parameters

Abstract The cotton mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae), is an invasive pest of cotton, apart from several other important crops, and poses a serious threat to agricultural economy all over the world. Studies on the biology and population growth parameters of P. solenopsis on the five most preferred host plants, namely cotton (Gossypium hirsutum L.) (Malvaceae), China rose (Hibiscus rosa-sinensis L.) (Malvaceae), tomato (Lycopersicon esculentum Mill.) (Solanaceae), congress grass (Parthenium hysterophorus L.) (Asteraceae) and okra (Abelmoschus esculentus (L.) Moench) (Malvaceae) were undertaken in the laboratory under controlled temperature and relative humidity. The mean cumulative development time of females was 16.61 days on cotton, 14.16 days on China rose, 14.13 days on okra, 14.00 days on tomato and 13.57 days on congress grass. The longest oviposition period was recorded on cotton (15.20 ± 1.87 days), while it was in the range of 9-10 days in the remaining host plants. Females lived longer (27.40 ± 1.76 days) when reared on cotton, while their life was shortest on tomato (14.60 ± 0.96 days). The highest fecundity was observed on cotton (328.30 ± 23.42), whereas it was found to be in the range 178-212 on the other hosts. The survival frequency from crawler to adult in females was highest on cotton (27.53%), while it was the lowest on tomato (15.87%). The highest net reproductive rate (284.3 females/female/generation), mean length of a generation (31.24 days), and intrinsic rate of increase (0.19 day−1) were recorded on cotton. The finite rate of increase was in the range of 1.18-1.20 (females/female/day) for all the selected host plants. The weekly multiplication rate was highest on China rose and congress grass (3.78), while it was the least on tomato (3.28). The corrected generation time was dissimilar in all the selected host plants, being highest on cotton (31.39 days) and the least on congress grass (27.71 days). The doubling time was shortest on congress grass (3.61 days), while it was longest on tomato (4.11 days). Hence, the host plant species significantly affects population growth of P. solenopsis.

scholarly journals Effect of host plant on the life history of the carnation tortrix moth Cacoecimorpha pronubana (Lepidoptera: Tortricidae)

2021 ◽  
pp. 1-7
Author(s):  
Marcin W. Zielonka ◽  
Tom W. Pope ◽  
Simon R. Leather
Keyword(s):  
Life History ◽  
Host Plant ◽  
Plant Species ◽  
Host Plants ◽  
Crop Protection ◽  
Plant Production ◽  
Pupal Weight ◽  
Production Environment ◽  
Host Plant Species ◽  
The Uk

Abstract The carnation tortrix moth, Cacoecimorpha pronubana (Hübner, [1799]) (Lepidoptera: Tortricidae), is one of the most economically important insect species affecting the horticultural industry in the UK. The larvae consume foliage, flowers or fruits, and/or rolls leaves together with silken threads, negatively affecting the growth and/or aesthetics of the crop. In order to understand the polyphagous behaviour of this species within an ornamental crop habitat, we hypothesized that different host plant species affect its life history traits differently. This study investigated the effects of the host plant species on larval and pupal durations and sizes, and fecundity (the number of eggs and the number and size of egg clutches). At 20°C, 60% RH and a 16L:8D photoperiod larvae developed 10, 14, 20 and 36 days faster when reared on Christmas berry, Photinia (Rosaceae), than on cherry laurel, Prunus laurocerasus (Rosaceae), New Zealand broadleaf, Griselinia littoralis (Griseliniaceae), Mexican orange, Choisya ternata (Rutaceae), and firethorn, Pyracantha angustifolia (Rosaceae), respectively. Female pupae were 23.8 mg heavier than male pupae, and pupal weight was significantly correlated with the duration of larval development. The lowest and the highest mean numbers of eggs were produced by females reared on Pyracantha (41) and Photinia (202), respectively. Clutch size differed significantly among moths reared on different host plants, although the total number of eggs did not differ. This study showed that different ornamental host plants affect the development of C. pronubana differently. Improved understanding of the influence of host plant on the moth's life history parameters measured here will help in determining the economic impact that this species may have within the ornamental plant production environment, and may be used in developing more accurate crop protection methodologies within integrated pest management of this insect.

scholarly journals Life History of Paracoccus marginatus (Hemiptera: Pseudococcidae) on Four Host Plant Species Under Laboratory Conditions

2008 ◽  
Vol 37 (3) ◽  
pp. 630-635 ◽  
Author(s):  
Kaushalya G. Amarasekare ◽  
Catharine M. Mannion ◽  
Lance S. Osborne ◽  
Nancy D. Epsky
Keyword(s):  
Life History ◽  
Host Plant ◽  
Plant Species ◽  
Host Plant Species ◽  
Laboratory Conditions ◽  
History Of

Food-plant effects on larval performance do not translate into differences in fitness between populations of Panolis flammea (Lepidoptera: Noctuidae)

2003 ◽  
Vol 93 (6) ◽  
pp. 553-559 ◽  
Author(s):  
A.J. Vanbergen ◽  
D.J. Hodgson ◽  
M. Thurlow ◽  
S.E. Hartley ◽  
A.D. Watt
Keyword(s):  
Host Plant ◽  
Plant Species ◽  
Scots Pine ◽  
Growth Parameters ◽  
Lodgepole Pine ◽  
Larval Growth ◽  
Pupal Weight ◽  
Larval Performance ◽  
Host Plant Species ◽  
Panolis Flammea

AbstractIn the UK, Panolis flammea (Denis & Schiffermüller) is a pest of monocultures of non-native lodgepole pine Pinus contorta Douglas, but not of the indigenous host Scots pine P. sylvestrisL. This difference in population dynamics may be due to the adaptation of P. flammea populations to the phenology, chemical composition and natural enemy complement of lodgepole pine. To ascertain if there was local adaptation of P. flammea populations to lodgepole pine, this study tested for improved performance of both larvae and adults on the host plant species from which they were sourced, compared with their performance on the alternative host plant species. No difference was found in the relative mean performance of populations sourced from Scots pine or lodgepole pine plantations, when fed on Scots or lodgepole pine foliage. Larvae grew faster on Scots pine but this difference did not translate into differences in pupal weight, female body weight or fecundity. Indeed, those insects that had fed on lodgepole pine had a longer lifespan than those that had fed on Scots pine, which, if translated into greater probability of mating or higher fecundity, could contribute to the observed outbreak dynamics in the field. The prediction that the observed outbreak dynamics of P. flammea can be explained by the existence of populations locally adapted to lodgepole pine was not supported. These results cast doubt on the use of larval growth parameters as surrogates of fitness in Lepidoptera.

scholarly journals Effect of temperature on life history and population growth parameters of Planococcus citri (Homoptera, Pseudococcidae) on coleus [Solenostemon scutellarioides (L.) Codd.]

2009 ◽  
Vol 61 (2) ◽  
pp. 329-336 ◽  
Author(s):  
Shila Goldasteh ◽  
Asghar Talebi ◽  
Yaghoub Fathipour ◽  
Hadi Ostovan ◽  
Abbasali Zamani ◽  
...  
Keyword(s):  
Life History ◽  
Population Growth ◽  
Growth Parameters ◽  
Natural Increase ◽  
Effect Of Temperature ◽  
Planococcus Citri ◽  
Reproduction Rate ◽  
Solenostemon Scutellarioides ◽  
Rate Of Increase ◽  
Population Growth Parameters

The development, life history, reproduction, and population growth parameters of Planococcus citri Risso on coleus [Solenostemon scutellarioides (L.) Codd.] were studied at various temperatures ranging from 10 to 37?C, 70?10% RH, and photoperiod length of 16: 8 h (L: D). Females and males successfully developed into adults at from 15 to 32?C and 18 to 32?C, respectively. All first instars died at 10, 12, and 37?C. Lower temperatures (10, 12, and 15?C) caused higher egg mortality than did higher temperatures (32, 35, and 37?C). At all temperatures (except 15?C), the highest percentage of nymphal mortality was observed in the first instar. The sex ratio was female-biased between 15 and 30?C, but there was a slightly higher number of males at 32?C. The highest adult longevities of females and males were obtained at 18 and 25?C, respectively. The pre-oviposition, oviposition, and post-oviposition periods were significantly different at various temperatures. The highest fecundity was observed at 23?C. The shortest and longest oviposition periods occurred at 32 and 18?C, respectively. Maximum values of the intrinsic rate of natural increase (rm), net reproduction rate (R0), and finite rate of increase (?) and the shortest mean generation time (T) and doubling time (DT) were obtained at 25?C. Our findings showed citrus mealybug performances to be highly affected by temperature.

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