Biology and Behavior of Six Species of Reduviids (Hemiptera: Reduviidae: Harpactorinae) in a Cashew Ecosystem1

Srikumar, K. K.; Bhat, P. S.; Raviprasad, T. N.; Vanitha, K.; Saroj, P. L.; Ambrose, Dunston P.

doi:10.3954/jaue14-14.1

Cited by 15 publications

(4 citation statements)

References 8 publications

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“…At the end of larval development of the offspring of R. rapax pairs giving rise to 15.10± 4.01 females and 8.53± 2.75 males, giving a sex ratio of 0.58 in favour of females. These results are similar to those of Srikumar et al (2014).…”

Section: Resultssupporting

confidence: 90%

Bioecology of Reduviid Rhynocoris Rapax- Predator of Podagrica decolorata

Adagba,

N’guessan,

Christian

et al. 2024

IJE

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Flea beetle Podagrica decolorata (Duvivier) is a defoliator of okra. The study of some biological parameters of bedbug, Rhynocoris rapax (Stal) was carried out in locality of Man, The study is part of the control of this crop pest. Boxes were used to rear the insects. A thermohygrometer was used to determine the regular temperature and humidity. Larval monitoring revealed five larval stages, with the longest development time of 16.28±2.41 days for stage 5. The highest survival rate was observed for fifth-stage larvae (96.09± 03.14%). Female biological cycle was an mean 82.10± 09.41 days, and male biological cycle was an mean 68.67± 08.44 days. The sex ratio was 0.58. This study revealed positive correlations between humidity and the larval cycle, followed by negative correlations between temperature and the larval cycle.

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Section: Resultssupporting

confidence: 90%

Bioecology of Reduviid Rhynocoris Rapax- Predator of Podagrica decolorata

Adagba,

N’guessan,

Christian

et al. 2024

IJE

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“…Males of S. annulicornis reared on the lepidopteran C. pavonana lived longer than the females, conversely, females of S. annulicornis reared on the coleopteran T. molitor lived longer than the males. Females living longer than males is a common feature of most reduviids (Ambrose et al, 1990(Ambrose et al, , 2007Saharayaj & Paulraj, 2001;Saharayaj, 2002;Srikumar et al, 2014;Shanker et al, 2016;Nitin et al, 2017), but males living longer than females is also reported for the reduviid Sycanus aurantiacus reared on the coleopteran Tenebrio molitor (Yuliadhi et al, 2015) and Amphibolus venator Klug reared on the coleopteran Tribolium confusum (Youssef & Abd-Elgayed, 2015). The longevity of adult predatory insects may be signifi cantly affected by the species of prey they feed on as adults (Jervis & Copland, 1996).…”

Section: Discussionmentioning

confidence: 99%

Laboratory rearing of Sycanus annulicornis (Hemiptera: Reduviidae) on two species of prey: Differences in its biology and efficiency as a predator of the nettle caterpillar pest Setothosea asigna (Lepidoptera: Limacodidae)

Sahid¹,

Natawigena²,

Hersanti³

et al. 2018

Eur. J. Entomol.

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http://www.eje.cz unfriendly broad-spectrum insecticides. Intensive use of insecticides has a negative effect on environmental sustainability, pest resistance, resurgence, outbreaks of secondary pests and extinction of non-target insects, such as natural enemies and pollinating insects (Aktar et al., 2009; Noor Farehan et al., 2013; Becker & Liess, 2015). Therefore, several methods of biological control focusing on the rearing and releasing of natural enemies for suppressing defoliator pests are regarded as more effi cient than using insecticides as it costs less and there are fewer social and ecological problems (Garcia & Ricalde, 2013; van Zyl & Malan, 2014; Tomson et al., 2017). Reduviid predators are polyphagous and important natural enemies of several defoliating pests (Sahayaraj, 2014). Sycanus is a predacious reduviid that has a wide prey diet including several orders of insects, such as both the larvae and pupae of Lepidoptera, Coleoptera and Diptera (Sahayaraj & Balasubramanian, 2016) and is considered to have the potential to be a biological control agent. Several species of Sycanus have been studied as biological control agents of the defoliator pests in oil palm plantations

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“…Freshly laid A. biannulipes eggs were removed from the substrate with a fine camel hairbrush (Srikumar et al, 2014). Each egg was placed on dry cotton wool at the bottom of plastic boxes (6 cm diameter × 4 cm high) and kept under ambient laboratory conditions (T°: 25 ± 2 °C; RH: 75-80%; photoperiod 12:12 h (L/D).…”

Section: Development and Survival Of A Biannulipes In Relation To Pre...mentioning

confidence: 99%

Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae)

Loko

Toffa

Gavoedo

et al. 2022

JoBAZ

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Background Alloeocranum biannulipes Montr. and Sign.(Hemiptera: Reduviidae) is a predator present in stored yam chips and a promising biological control agent against Dinoderus porcellus Lesne (Coleoptera: Bostrichidae). Numerical responses of A. biannulipes to different densities (1, 2, 4, 6, and 8) of D. porcellus larvae were evaluated under ambient laboratory conditions (T°: 25 ± 2 °C; RH: 75–80%; photoperiod 12:12 h (L/D)). The number of consumed prey, duration of pre-oviposition and oviposition, number of eggs laid, pre-imaginal development times and mortality rate of the predator were recorded. Results The results revealed that A. biannulipes females preying on the highest larval density of D. porcellus (8) presented the highest predation rate (4.34 ± 0.18 larvae/predator/day), shortest pre-oviposition period (11.01 ± 0.57 days) and the highest oviposition period (15.83 ± 1.02 days). The daily number of eggs laid by A. biannulipes female (y) as a function of the number of D. porcellus larvae consumed (x) was modelled by the equation y = 0.158x2 – 0.4073x + 3.8151 (R2 = 0.571). The efficiency of prey conversion into eggs of A. biannulipes females decreased with increased prey density. The prey density did not affect the hatching rate of A. biannulipes eggs and the pre-imaginal development times. However, A. biannulipes nymphs fed with more (2 to 8) D. porcellus showed a significantly higher survival rate than those fed with a single larva. Conclusions The positive numerical response of A. biannulipes suggests that this predator could play a key role in biological control program against D. porcellus.

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Biology and Behavior of Six Species of Reduviids (Hemiptera: Reduviidae: Harpactorinae) in a Cashew Ecosystem¹

Cited by 15 publications

References 8 publications

Bioecology of <i>Reduviid Rhynocoris</i> Rapax- Predator of <i>Podagrica decolorata</i>

Bioecology of <i>Reduviid Rhynocoris</i> Rapax- Predator of <i>Podagrica decolorata</i>

Laboratory rearing of Sycanus annulicornis (Hemiptera: Reduviidae) on two species of prey: Differences in its biology and efficiency as a predator of the nettle caterpillar pest Setothosea asigna (Lepidoptera: Limacodidae)

Effect of population density on oviposition, development, and survival of Alloeocranum biannulipes (Hemiptera: Reduviidae) preying on Dinoderus porcellus (Coleoptera: Bostrichidae)

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