Some like it hot: the effect of temperature on brood development in the invasive crab Hemigrapsus takanoi (Decapoda: Brachyura: Varunidae)

2012 ◽  
Vol 93 (1) ◽  
pp. 189-196 ◽  
Author(s):  
Anneke van den Brink ◽  
Mandy Godschalk ◽  
Aad Smaal ◽  
Han Lindeboom ◽  
Colin McLay
Keyword(s):  
Breeding Season ◽  
Reproductive Rate ◽  
Effect Of Temperature ◽  
Ovary Development ◽  
Similar Proportion ◽  
Net Reproductive Rate ◽  
Brood Development ◽  
Different Temperatures ◽  
Moult Period ◽  
Brood Stage

The duration of brood development in the introduced crab, Hemigrapsus takanoi in the Oosterschelde, The Netherlands, was compared at three different water temperatures. At 12, 18 and 24°C the females took an average of 32, 11 and 8 days respectively to lay eggs, which took 86, 28 and 18 days respectively to complete development. Five stages of development were identified, with each brood stage comprising a similar proportion of the duration time at different temperatures. The duration of each brood stage was also somewhat proportional to the number of females found carrying each brood stage in the field at the beginning of the breeding season. There appears to be a trigger for the breeding season in H. takanoi in the field at around 15°C above which ovary development begins. The results suggest that an increase in water temperature as a result of climate change may result in an increased net reproductive rate in H. takanoi due to earlier onset of the breeding season and increased number of broods per inter-moult period resulting in population growth. Increased temperatures may therefore lead to increased invasiveness of H. takanoi where it is already present, and range extension into locations where its establishment is currently excluded by unsuitable temperature.

scholarly journals Effect of Constant Temperatures on Biological Parameters of Tuta absoluta (Meyrick, 1917) on Tomato Plants in Case of Asexual Reproduction (Parthenogenesis

2021 ◽  
Vol 39 (2) ◽  
pp. 135-145
Author(s):  
Nabil Abo Kaf ◽  
◽  
Rawa Youssef ◽  
Rafic Aboud ◽  
◽  
...  
Keyword(s):  
Asexual Reproduction ◽  
Reproductive Rate ◽  
Tuta Absoluta ◽  
Leaf Miner ◽  
Effect Of Temperature ◽  
Research Centre ◽  
Intrinsic Rate Of Increase ◽  
Biological Parameters ◽  
Unmated Female ◽  
Net Reproductive Rate

Tomato leafminer Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) is a key devastating pest worldwide, it has the capacity to develop on a wide range of Solanaceous plants but tomato (Solanum lycopersicum L.) is considered to be its preferred host. This study was carried out at the Agricultural Scientific Research Centre in Latakia in 2019 to estimate biological parameters of T. absoluta and evaluate the effect of temperature in its development, longevity, reproduction in parthenogenesis. The experiments were carried out at constant temperatures (10, 20, 30˚ C), 60-65% RH, and photoperiod (16L: 8D). Biological parameters were analyzed according to the theory of age-stage two-sex life table by using the computer program TWO-SEX MSchart. The highest value of intrinsic rate of increase (r), the final increase rate (λ), and net reproductive rate (Ro) were 0.0439±0.0028 females/female/day, 1.0449±0.0029, and 7.01±0.8705 females/female/generation, respectively, at 20˚C. The lowest value of net reproductive rate (Ro) was 0.92±0.1250 females/female/generation at 30˚C. Generation time (T) was the longest (44.3±0.203 days) at 20˚C and decreased to 26.38±1.156 days at 30˚C. T. absoluta completed its development at all these temperatures. The results obtained showed that the effect of temperature on the insect development from egg to adult decreased with increased temperature. The shortest development period on egg, larva and pupa development was 3.95±0.149, 11.975±0.075 and 4.95±0.086 days, respectively, at 30˚C. This means that the development time from egg to adult was shorter (20.8±1.151 days) at 30˚C as compared to 34.51±0.127 days at 20˚C, and longest at 10˚C (125.4±1.211 days). The female longevity was longer (61.35±0.25 days) at 20˚C. The highest rate of fecundity was 12.98±1.072 eggs/unmated female, and the lowest was 2.19±0.152 eggs/unmated female at 30˚C. Moreover, the unmated females kept at 10˚C did not lay eggs, and unfertilized eggs (asexually produced eggs) laid by unmated females at 20 or 30˚C did not hatch. The adult pre-oviposition period (APOP) of unmated females was 2.57±0.1368 days at 20˚C and 4.31±0.2629 days at 30˚C, whereas the total APOP of females was 36.86±0.1844 days at 20˚C and 24.21±0.3039 days at 30˚C. Keywords: Tomato leaf miner, Life tables, asexual reproduction, Parthenogenesis, Syria

scholarly journals Age-Stage, Two-Sex Life Tables of the Predatory Mite Cheyletus Malaccensis Oudemans at Different Temperatures

Insects ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 181
Author(s):  
Weiwei Sun ◽  
Miao Cui ◽  
Liyuan Xia ◽  
Qing Yu ◽  
Yang Cao ◽  
...  
Keyword(s):  
Intrinsic Rate ◽  
Predatory Mite ◽  
Reproductive Rate ◽  
Life Tables ◽  
Intrinsic Rate Of Increase ◽  
Net Reproductive Rate ◽  
Acarus Siro ◽  
Rate Of Increase ◽  
Different Temperatures ◽  
Cheyletus Malaccensis

Cheyletus malaccensis Oudemans is a predatory mite inhabiting grain depots in China. The relationship between temperature and the population growth rate of C. malaccensis is useful for predicting its population dynamics. Age-stage, two-sex life tables of the predator, C. malaccensis, reared on Acarus siro were constructed under laboratory conditions at 22, 24, 28, 30, and 32 °C, 75% relative humidity, and a 0:24 h (L:D) photoperiod. Increasing temperature shortened the development time of the immature stages. The complete generation time of C. malaccensis ranged from 11.10 d to 27.50 d. Life table parameters showed that 28 °C was the optimum temperature for the growth and development of C. malaccensis; populations could increase rapidly at this temperature. The highest net reproductive rate (R0 = 290.25) and highest fecundity (544.52) occurred at 28 °C. Temperature significantly affected the intrinsic rate of increase (r), fecundity, and finite rate of increase (λ). The values of age-specific fecundity (high to low) were 28 °C > 24 °C > 30 °C > 32 °C > 22 °C, while the values of age-stage-specific fecundity had the same trend.

The effect of temperature on brood duration in three Halicarcinus species (Crustacea: Brachyura: Hymenosomatidae)

2011 ◽  
Vol 92 (3) ◽  
pp. 515-520
Author(s):  
Anneke M. van den Brink ◽  
Colin. L. McLay ◽  
Andrew M. Hosie ◽  
Michael J. Dunnington
Keyword(s):  
New Zealand ◽  
Temperature Rise ◽  
Incubation Time ◽  
Life Time ◽  
Global Temperature ◽  
Population Increase ◽  
Effect Of Temperature ◽  
Brood Development ◽  
Different Temperatures ◽  
Determinate Growth

The effect of temperature on brood development was investigated for three intertidal hymenosomatid crabs: Halicarcinus cookii, H. varius and H. innominatus in Kaikoura, New Zealand. The duration of brood incubation decreased as temperature increased, as did the interbrood period. The duration of each stage of brood development also decreased with increased temperature, but the proportion of total incubation time for each stage remained relatively similar at different temperatures. Hymenosomatid crabs have determinate growth, but moult to maturity at different sizes, thereafter devoting most of their energy to reproduction. The number of broods a female could carry in her lifetime was estimated for each species. Halicarcinus cookii was estimated to be able to produce eight complete broods of 1146 eggs per lifetime, H. varius was estimated to be able to produce seven complete broods of 1051 eggs per lifetime and H. innominatus was estimated to be able to produce six complete broods of 1081 eggs per life time. With the predicted global temperature rise of 2°C in the next 50 years, the authors estimate that, for all three species, a female could produce one extra brood per lifetime (a 10–15% increase in fecundity depending on species), even more if crabs reach maturity faster, potentially leading to a significant population increase.

Effect of temperature on biological parameters of Aphidius matricariae, the Aphis fabae parasitoid

2016 ◽  
Vol 66 (3-4) ◽  
pp. 335-345
Author(s):  
Eliza Pourtaghi ◽  
Asghar Shirvani ◽  
Maryam Rashki
Keyword(s):  
Biological Control ◽  
Adult Emergence ◽  
Intrinsic Rate ◽  
Reproductive Rate ◽  
Aphis Fabae ◽  
Effect Of Temperature ◽  
Intrinsic Rate Of Increase ◽  
Net Reproductive Rate ◽  
Aphidius Matricariae ◽  
Rate Of Increase

Aphids can have devastating effects on agriculture and horticulture, and biological control agents form an important means of controlling them.Aphidius matricariaeHaliday is an important endoparasitoid for the suppression of aphid pest population outbreaks. In this research, the influence of three different temperatures, 20, 25 and 30°C, on some life cycle charactersitic ofA. matricariaewas studied under laboratory conditions when present on its host,Aphis fabaeScopoli. At 30°C, the intrinsic rate of increase, net reproductive rate, finite rate of increase, mean generation time and increase rate in one week were all significantly lower compared to the lower temperatures. The results showed that temperature had a significant effect on the duration of parasitoid development from oviposition to adult emergence. Moreover, the value of doubling time was higher at 30°C than at 20 and 25°C. The parasitoid had the shortest longevity, life span and lowest fecundity at 30°C. This investigation of temperature-dependent development and reproduction can help in the management of biological control programs. The results of this study demonstrate thatA. matricariaeis able to perform, and be mass produced, as a favorable and proper natural enemy for the biocontrol ofA. fabaeat a temperature range of 20-25°C.

scholarly journals Determining the Effect of Temperature on the Growth and Reproduction of Lasioderma serricorne Using Two-Sex Life Table Analysis

Insects ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1103
Author(s):  
Tao Wang ◽  
Yan-Ling Ren ◽  
Tai-An Tian ◽  
Zhi-Tao Li ◽  
Xing-Ning Wang ◽  
...  
Keyword(s):  
Life Table ◽  
Total Duration ◽  
Reproductive Rate ◽  
Oviposition Period ◽  
Effect Of Temperature ◽  
Economic Losses ◽  
Lasioderma Serricorne ◽  
Cigarette Beetle ◽  
Increase Rate ◽  
Different Temperatures

The cigarette beetle Lasioderma serricorne (Fabricius) is a major pest of stored products worldwide, especially tobacco and foods, causing huge economic losses. This study aimed to experimentally investigate the population dynamics of this pest at different temperatures and provide theoretical input for its control. Populations of L. serricorne were established under laboratory conditions at five temperatures (21 °C, 24 °C, 27 °C, 30 °C, and 33 °C). Results showed that an increasing temperature significantly affected the developmental time, longevity, oviposition period, and fecundity of L. serricorne. Both the longevity and fecundity of adult beetles were significantly reduced as the temperature increased. High temperatures significantly reduced the total duration of the preoviposition period but prolonged the oviposition period of L. serricorne. Increasing the temperatures from 21 °C to 33 °C significantly influenced the life table parameters of L. serricorne. The intrinsic increase rate (r), finite increase rate (λ), and gross reproductive rate (GRR) all increased with a greater rearing temperature, but mean generation time (T) was significantly shortened. To our best knowledge, this is the first report to detail the entire life history of the cigarette beetle in response to different temperatures when reared on tobacco dry leaves. This finding may provide basic information on the occurrence of L. serricorne in a warehouse setting and its mass rearing.

scholarly journals Fertility Lifetables of Glasshouse Whitefly Trialeurodes vaporariorum (Westwood) on French Bean cv. Contender at Different Temperatures

2020 ◽  
Vol 7 (1) ◽  
pp. 001-005
Author(s):  
Jyoti Kapil ◽  
◽  
Manica Tomar ◽  
Keyword(s):  
Trialeurodes Vaporariorum ◽  
Reproductive Rate ◽  
Natural Increase ◽  
French Bean ◽  
Population Doubling ◽  
Intrinsic Rate Of Increase ◽  
Population Doubling Time ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Different Temperatures

Fertility Life tables and characteristics of the Trialeurodes vaporariorum (Westwood) were assessed on French bean cv. Contender at different temperatures 15, 20, 25 and 30 °C. The life table analysis showed that the females lived for a maximum of 58 days at 15 °C. The trend of oviposition showed a peak on 32nd day at 25 °C as the highest number of eggs produced per female per day was 9.98. The true Intrinsic rate of increase (rm) values were 0.123 and 0.121 at 20 °C and 25 °C, respectively. The rate of natural increase (rc) was 0.120 at 20 °C and 25 °C. The highest net reproductive rate (45.86) was obtained at 20 °C. The population doubling time (DT) was maximum (10.42 days) at 15 °C and minimum (5.64 days) at 20 °C. Generation time was 47.17 days at 15 °C which decreased to 24.82 days at 30 °C.

Life cycle of the predatory mite Cheyletus malaccensis (Acari: Cheyletidae) fed on Poultry Red Mite Dermanyssus gallinae (Acari: Dermanyssidae)

2017 ◽  
Vol 22 (9) ◽  
pp. 1422 ◽  
Author(s):  
Maicon Toldi ◽  
Daiâni Cristina Cardoso Faleiro ◽  
Guilherme Liberato Da Silva ◽  
Noeli Juarez Ferla
Keyword(s):  
Predatory Mite ◽  
Reproductive Rate ◽  
Dermanyssus Gallinae ◽  
Experimental Unit ◽  
Poultry Red Mite ◽  
Net Reproductive Rate ◽  
Different Temperatures ◽  
The Mean ◽  
Cheyletus Malaccensis ◽  
Capacity For Increase

This study evaluated the biological characteristics of predatory mite Cheyletus malaccensis fed on Dermanyssus gallinae at different temperatures. The study started with thirty individual eggs of C. malaccensis each isolated in an experimental unit, which developed throughout their life stages while feeding on D. gallinae at each temperature tested (20ºC, 25ºC and 30±1ºC and 80±5% relative humidity). Emerged adult females were not mated, thus producing only male offspring (arrhenotoky). Fecundity was the highest at 25°C (415.62±24.78 eggs/female) and lowest at 20°C followed at 30ºC. The mean length of a generation did not displayed difference among the three temperatures, but the net reproductive rate (Ro), innate capacity for increase (rm) finite increase rate (λ) were significantly higher at 30°C and lower at 20°C. Cheyletus malaccensis was able to develop and reproduce successfully when fed D. gallinae, and the optimum temperature for development, fertility and survival was 25°C. Our findings proved that C. malaccensis might be a natural enemy of D. gallinae, because it was able to develop and reproduce while feeding exclusively on this ectoparasite. 

Effect of temperature on development and population growth rates of Spilostethus pandurus (Scopoli) (Hemiptera: Lygaeidae) in Giza, Egypt

1995 ◽  
Vol 16 (1) ◽  
pp. 17-25 ◽  
Author(s):  
M. M. El-Shazly
Keyword(s):  
Adult Emergence ◽  
Intrinsic Rate ◽  
Reproductive Rate ◽  
Natural Increase ◽  
Effect Of Temperature ◽  
Instantaneous Rate ◽  
Net Reproductive Rate ◽  
Population Growth Rates ◽  
Successive Generations ◽  
Spilostethus Pandurus

AbstractThe effects of temperature on the life history of Spilostethus pandurus (Scopoli) were examined by determining the different developmental and reproductive parameters with respect to days of hatching, oviposition, and adult emergence of insects reared in field cages at Giza, Egypt. Hatching, oviposition, and adult emergence continued all year round; the average daily temperature in the coldest month (January) seemed to be above developmental thresholds for different stages. This lygaeid completed six overlapping generations in 1 year. The basic population parameters, i.e. net reproductive rate (R0), gross reproductive rate (GRR), instantaneous rate of natural increase (r), finite rate of natural increase (λ), and mean generation time (T) exhibited a more or less cyclic pattern in successive generations. The highest value of r (rmax) was considered as the intrinsic rate of natural increase of this species.

scholarly journals Influence of temperature on the biology of Aenasius arizonensis (Girault) (Hymenoptera: Encyrtidae), a parasitoid of solenopsis mealybug, Phenacoccus solenopsis Tinsley

2017 ◽  
Vol 30 (4) ◽  
pp. 210
Author(s):  
, Vijaya ◽  
Pala Ram
Keyword(s):  
Intrinsic Rate ◽  
Mass Rearing ◽  
Reproductive Rate ◽  
Effect Of Temperature ◽  
Intrinsic Rate Of Increase ◽  
Phenacoccus Solenopsis ◽  
Net Reproductive Rate ◽  
Rate Of Increase ◽  
Influence Of Temperature On ◽  
Female Longevity

Effect of temperature on the biology of <em>Aenasius arizonensis</em> (Girault) (=<em>Aenasius bambawalei</em> Hayat) (Hymenoptera: Encyrtidae), a parasitoid of solenopsis mealybug, <em>Phenacoccus solenopsis</em> Tinsley, was studied at four constant temperatures <em>viz</em>. 20±1, 25±1, 30±1 and 35±1<sup>0</sup>C. Mealybugs were reared on sprouted potatoes. The parasitoid completed its development at all the temperatures studied and males developed faster than the females. For males and females, respectively, total development period was 30.56, 24.16, 13.40 and 11.60 days and 34.40, 26.20, 14.88, and 12.04 days at 20±1, 25±1, 30±1 and 35±1<sup>0</sup>C, respectively. The daily and total fecundity (number of hosts parasitised) was 1.42, 1.82, 3.17, 2.16 and 57.13, 63.15, 65.60, 37.46 at 20±1, 25±1, 30±1 and 35±1<sup>0</sup>C, respectively. Female parasitoids parasitised mealy bugs on the day of emergence at all the temperatures. At respective temperatures oviposition and post-oviposition periods were 35.86, 33.60, 18.93, 15.53 days and 2.86, 2.26, 2.60 and 2.33 days, respectively. Parasitoid males were short lived as compared to females at all the temperatures. The male and female longevity, respectively, was 23.06, 17.26, 13.20, 10.33 days and 38.66, 34.53, 20.86, 17.86 days at 20±1, 25±1, 30±1 and 35±1<sup>0</sup>C, respectively. Sex-ratio (male: female) was in favour of female parasitoids (1: 1.1 to 1: 1.2) at all the temperatures. Net reproductive rate (36.41), intrinsic rate of increase (0.155) and finite rate of increase (1.168) were maximum at 30±1<sup>0</sup>C indicating this temperature to be the most favourable for the development and reproduction of the parasitoid. Males emerged out from the small sized mummies (2.28×1.20mm) whereas; large sized mummies (2.90×1.59mm) yielded mostly the female parasitoids. Males were generally smaller in size (1.26×0.58mm) as compared to female parasitoids (1.84×0.89mm). The results of the present studies could be useful in establishing a mass rearing programme for the parasitoid.

Bionomics of Glycyphagus domesticus (de Geer) (Acarina: Glycyphagidae), a pest of stored grain

1968 ◽  
Vol 46 (1) ◽  
pp. 89-92 ◽  
Author(s):  
Philip S. Barker
Keyword(s):  
Life History ◽  
Relative Humidity ◽  
Rapid Development ◽  
Reproductive Rate ◽  
Optimum Temperature ◽  
Tyrophagus Putrescentiae ◽  
Stored Grain ◽  
Net Reproductive Rate ◽  
Different Temperatures ◽  
Reproductive Rates

The life history and reproductive rates of Glycyphagus domesticus (de Geer) were examined at different temperatures and two humidities. Most rapid development of the eggs occurred at 24.4 °C; the optimum temperature for the post-embryonic stages was 22.2 °C. A higher percentage of hypopi were formed at 70 to 75% than at 95 to 100% relative humidity. G. domesticus has a net reproductive rate of over 20, which was intermediate between those of Tyrophagus putrescentiae (Schrank) and Aëroglyphus robustus (Banks).

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