Chilo partellus

Last updated

Chilo partellus
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Crambidae
Genus: Chilo
Species:
C. partellus
Binomial name
Chilo partellus
(C. Swinhoe, 1885)
Synonyms
  • Crambus partellusC. Swinhoe, 1885
  • Chilo partellus acutusBhattacherjee, 1971
  • Chilo lutulentalisTams, 1932
  • Chilo partellus coimbatorensisBhattacherjee, 1971
  • Chilo partellus kanpurensisBhattacherjee, 1971
  • Chilo kaanpurenseVári, Kroon & Krüger, 2002
  • Crambus zonellusC. Swinhoe, 1884

Chilo partellus, the spotted stalk borer or spotted stem borer, [1] [2] is a moth in the family Crambidae. It was described by Charles Swinhoe in 1885. It is found in India, Pakistan, [3] Iran, [4] Ethiopia, Lesotho, Madagascar, Malawi, South Africa, Sudan, Tanzania, Uganda and on Mayotte. [5]

Contents

C. partellus is a pest that was introduced to Africa most likely from India in the early 20th century. After arriving in Africa, it has spread to nearly all countries in eastern and southern Africa, and it is assumed that it is spreading to western Africa. C. partellus is indigenous to Asia and became established in eastern Africa in the early 1930s. [6]

C. partellus is one of the most economically damaging pests in Asia and Africa, attacking all parts of the plant except the roots. [7]

Habitat

C. partellus has rapidly spread over a wide geographical range and has proven to be a very efficient colonizer and devastating pest wherever it may occur. In general, C. partellus occurs in low to mid-elevations (less than 1500 m) and warmer areas. However, they can now be found in higher elevations such as Ethiopia at 2088 m. [8]

C. partellus is highly invasive and can fully or partially displace other indigenous stemborer species such as Busseola fusca and Chilo orichalcociliellus . Temperature and humidity can have a significant impact on the survival and establishment of adult C. partellus in new ecological niches. [9]

Food

C. partellus is a generalist herbivore that feeds on several species of cultivated and wild plants. [10]

Appearance

Eggs are flat and oval and look creamy white and are about 0.8 mm in length. [11]

Larvae of C. partellus resemble caterpillars and can be creamy white to yellowish brown. These larvae also have four purple-brown longitudinal stripes and are usually found with characteristically dark brown spots along the back, therefore giving off a spotted appearance. When the larvae of the spotted stalk borer are fully grown, they produce a conspicuous reddish-brown head. It has a plate on the dorsal surface of the thorax which is known as a prothoracic shield and is reddish brown to dark brown and shiny. [12]

Pupae can be up to 15 mm in length, slender and shiny. The pupae of C. partellus are light yellow brown to dark red brown. [13]

Adults are small moths with wing lengths ranging from 7–17 mm and a wingspan of 20–25 mm. The forewings of adults are brown yellowish with darker scale patterns forming longitudinal stripes. The hindwings of males are a pale straw colour and in females the hindwings are white. [14]

Similar species such as Chilo orichalcociliellus located in East Africa may be confused with Chilo partellus.

Reproduction and life cycle

Eggs are laid in batches of 10–80 on the upperside and underside of leaf surfaces, usually close to the midrib. They hatch after 4–10 days. [15]

Younger larvae (caterpillars) feed on the leaf whorl. Older larvae tunnel into the stems, and it is within these tunnels that they feed and grow for about 2–3 weeks. When these larvae grow completely, they pupate and remain in the stem of the maize. After 1–2 weeks, the adults evolve from the pupae stage and emerge from the stem. They mate and lay eggs on other maize plants and continue to cause damage to the crop. [16]

During dry seasons, larvae may enter a state of diapause or a period suspended development for several months and will pupate once it the dry season is over and there is rain. Adults can emerge from pupae in the late afternoon or early evenings and are active at night. Adults will rest on plants during the day. The whole life cycle takes about 3–4 weeks, however it can vary due to temperature, humidity and other factors. Five or more successive generations may develop in favourable conditions and in regions where there is warm temperatures, high relative humidity, sufficient water and an abundance of host plants. C. partellus can reproduce and develop all year-round. [17] [18]

Host relationship

This pest causes US$334 million annual loss to sorghum alone in the semiarid tropics. [19]

C. partellus attacks several grass species which can be both cultivated and wild. Cultivated crop hosts include but are not limited to maize, sorghum, pearl millet, rice, and sugarcane. Wild hosts include elephant grass ( Pennisetum purpureum ), reeds ( Phragmites ) and vossia ( Vossia cuspidata ). [20]

In nature, an insect locates a host plant through a sequence of behavioural and biological responses such as the following:

  1. Orientation and setting
  2. Feeding
  3. Metabolism of ingested food
  4. Growth
  5. Survival and fecundity
  6. Oviposition [21]

If one or more of these categories of insect responses are not met by the host plant, the plant would therefore be rendered as unsuitable or unfavourable for insect establishment. Therefore, the extent of insect establishment depends on the interaction of insect responses to various plant characteristics. [22]

Numerous factors can enhance the insect pest problem, this includes either manipulating the environment that are favourable for growth, reproduction and development of insects. Processes that could decrease the insect pest problem include unrestricted use of chemicals (insecticides) and imbalanced use of fertilizers. [23]

Infestation can start around two weeks after seedling emergence. The first symptom of damage is the presence of irregular shaped pinholes or shot holes caused by early-instar larval feeding in the whorl. This can later convert to elongated lesions on the leaves. The infested plants appear ragged and deteriorated. The older larvae leave the whorl, break through and bore into the stem and reach the growing point. It is there that the larvae cut and cause the characteristic deadheart symptom. [24] [25]

Therefore, the damage due to the pest includes leaf feeding and subsequent destruction, extensive tunnels in stems and maize cobs, disruption in the nutrient flow, and the resultant death of the plant due to the puncture of the growing point. [26]

Host defences

Studies have shown that some host plants to C. partellus have developed defences and therefore resistance to this pest. For example, some maize landraces have been shown to respond to early herbivory (e.g. egg deposition) by C. partellus by producing herbivore-induced plant volatiles (HIPVs) which would attract parasitoids of C. partellus. It is assumed that this is an opportunity for the exploitation of this trait and can be used as management of this pest. However, this particular defensive technique requires further study for it have very little to no information available regarding other factors including host plant defences on larval preference and development, C. partellus's oviposition behaviour after HIPV production, etc. Also, host plants may have created a defence where leaf feeding by C. partellus may have induced secondary defence metabolites making plants unpalatable. Therefore, this could represent another opportunity for the management of C. partellus. [27]

Pest management and biocontrol methods

There are a few methods that could be used in order to reduce the pest population of C. partellus. Methods and processes include but are not limited to the following:

Detection methods: Infestations by C. partellus can be detected by walking through crops looking for the characteristic physical appearance of a deteriorated host plant by the presence of deadhearts. Samples of infested stems can be cut open to find caterpillars and pupae, however it is a good idea to rear these until adulthood to be certain that they are C. partellus pests.

Cultural practices: Intercropping or mixing maize with non-host crops like cassava can reduce the population of C. partellus. Trap plants such as Napier grass ( Pennisetum purpureum ) may also be used. These plants draw the adult female away from the crop and more eggs are laid on the trap plant than on the host plant crop, and this leads to poor development of larvae. This method is also known as "push-pull".

Also, marking sure to destroy all residue of infested maize to ensure the death of all larvae would decrease the chances of reinfestation. [28]

Biological control: Two parasitic wasps ( Cotesia flavipes ) and ( Xanthopimpla stemmator ) can attack and kill C. partellus pests. These parasitic wasps can lay eggs into C. partellus (C. flavipes on adult and X. stemmator on the pupae) and upon hatching, these eggs feed internally into the pest. They then exit and spin cocoons. Therefore, management of habitats that conserve these parasitic wasps could also result in the decline of C. partellus populations. [29]

Chemical control: Applications of granules or dust to the leaf whorl early in crop growth could kill early larval instars. However this has limited effectiveness, especially once the larvae has bored into the stem. Also, studies indicate that nitrogen fertilizer can be applied as an integrated pest management tactic in control of C. partellus population development and infestation on maize crop. [30] [31]

Human impact

Climate change could be one of the possible reasons this pest is moving to higher altitudes and therefore increasing its geographic range. This is due to a study showing that temperature, relative humidity, and interaction significantly affect the developmental time of C. partellus. [32]

A study found that the egg period was longer at lower temperatures for C. partellus, therefore there is a reduction in larval period with an increase in temperature due to increased metabolic activity and feeding. Also, the pupal period was shorter at higher temperatures, therefore higher temperatures have a significantly shorter egg to adult developmental period. Egg hatching was faster at higher relative humidity, therefore this study and its results imply that high relative humidity modifies the effect of temperature and contributes to the variation in the egg period of C. partellus. In addition, higher temperatures also indicated a reduction in the length of their life cycle, a reduced developmental time and an increase in developmental rates. Therefore, the duration of adult longevity of this pest is inversely related to temperature. [33]

Related Research Articles

<span class="mw-page-title-main">Crambidae</span> Family of moths

Crambidae comprises the grass moth family of lepidopterans. They are variable in appearance, with the nominal subfamily Crambinae taking up closely folded postures on grass stems where they are inconspicuous, while other subfamilies include brightly coloured and patterned insects that rest in wing-spread attitudes.

<span class="mw-page-title-main">Push–pull agricultural pest management</span> Intercropping strategy for controlling agricultural pests

Push–pull technology is an intercropping strategy for controlling agricultural pests by using repellent "push" plants and trap "pull" plants. For example, cereal crops like maize or sorghum are often infested by stem borers. Grasses planted around the perimeter of the crop attract and trap the pests, whereas other plants, like Desmodium, planted between the rows of maize, repel the pests and control the parasitic plant Striga. Push–pull technology was developed at the International Centre of Insect Physiology and Ecology (ICIPE) in Kenya in collaboration with Rothamsted Research, UK. and national partners. This technology has been taught to smallholder farmers through collaborations with universities, NGOs and national research organizations.

<span class="mw-page-title-main">European corn borer</span> Species of moth

The European corn borer, also known as the European corn worm or European high-flyer, is a moth of the family Crambidae. It is a pest of grain, particularly maize. The insect is native to Europe, originally infesting varieties of millet, including broom corn. The European corn borer was first reported in North America in 1917 in Massachusetts, but was probably introduced from Europe several years earlier. Since its initial discovery in the Americas, the insect has spread into Canada and westwards across the United States to the Rocky Mountains.

<span class="mw-page-title-main">Wharf borer</span> Species of beetle

The wharf borer, Nacerdes melanura, belongs to the insect order Coleoptera, the beetles. They belong to the family Oedemeridae, known as false blister beetles. Wharf borers are present in all the states of the USA except for Florida. It takes about a year to develop from an egg to an adult. The name 'wharf borer comes from the larval stage of this insect, which often lingers on pilings and timbers of wharves, especially along coastal areas. The adult beetles are identifiable via a black band across the end of both elytra. In addition, wharf borers are distinct from other members of the family Oedemeridae due to the presence of a single spur on the tibia of the forelegs and the distance between both eyes. The female beetle oviposits eggs on rotten wood, on which the larvae hatch, burrow, then feed. Adults do not eat and depend on stored energy reserves accumulated as a larva. They are considered a pest because they damage wood used in building infrastructures.

<i>Chilo suppressalis</i> Species of moth

Chilo suppressalis, the Asiatic rice borer or striped rice stemborer, is a moth of the family Crambidae. It is a widespread species, known from Iran, India, Sri Lanka, China, eastern Asia, Japan, Taiwan, Malaysia to the Pacific.

<i>Coleomegilla maculata</i> Species of beetle

Coleomegilla maculata, commonly known as the spotted lady beetle, pink spotted lady beetle or twelve-spotted lady beetle, is a large coccinellid beetle native to North America. The adults and larvae feed primarily on aphids and the species has been used as a biological control agent. Based on name connotation and to avoid confusion with other species also called "spotted ladybeetle", spotted pink ladybeetle is probably the most appropriate common name for this species.

<i>Eldana</i> Genus of moths

Eldana is a genus of moths of the family Pyralidae containing only one species, the African sugar-cane borer, which is commonly found in Equatorial Guinea, Ghana, Mozambique, Sierra Leone and South Africa. Adults have pale brown forewings with two small spots in the centre and light brown hindwings, and they have a wingspan of 35mm. This species is particularly relevant to humans because the larvae are a pest of the Saccharum species as well as several grain crops such as sorghum and maize. Other recorded host plants are cassava, rice and Cyperus species. When attacking these crops, E. saccharina bores into the stems of their host plant, causing severe damage to the crop. This behavior is the origin of the E. saccharrina's common name, the African sugar-cane borer. The African sugar-cane borer is a resilient pest, as it can survive crop burnings. Other methods such as intercropping and parasitic wasps have been employed to prevent further damage to crops.

<i>Sesamia inferens</i> Species of moth

Sesamia inferens, the Asiatic pink stem borer, gramineous stem borer, pink borer, pink rice borer, pink rice stem borer, pink stem borer, purple borer, purple stem borer or purplish stem borer, is a moth of the family Noctuidae. The species was first described by Francis Walker in 1856. It is found from Pakistan, India, Sri Lanka, Myanmar to Japan and the Solomon Islands. A polyphagous species, it is a major pest in many crops worldwide.

<i>Chilo plejadellus</i> Species of moth

Chilo plejadellus, the rice stalk borer moth, is a moth in the family Crambidae described by Johann Leopold Theodor Friedrich Zincken in 1821. It is found in North America, including Illinois, Ontario, Quebec, Pennsylvania, Georgia, Louisiana, Wisconsin, Texas and Arkansas.

<i>Scirpophaga incertulas</i> Species of moth

Scirpophaga incertulas, the yellow stem borer or rice yellow stem borer, is a species of moth of the family Crambidae. It was described by Francis Walker in 1863. It is found in Afghanistan, Nepal, north-eastern India, Sri Lanka, Bangladesh, Myanmar, Vietnam, Thailand, Malaysia, Singapore, Sumatra, Java, Borneo, Sumba, Sulawesi, the Philippines, Taiwan, China and Japan.

Chilo agamemnon is a species of moth in the family Crambidae described by Stanisław Błeszyński in 1962. It is found in Spain, Egypt, Israel, Sudan and Uganda.

<i>Ostrinia furnacalis</i> Species of moth

Ostrinia furnacalis is a species of moth in the family Crambidae, the grass moths. It was described by Achille Guenée in 1854 and is known by the common name Asian corn borer since this species is found in Asia and feeds mainly on corn crop. The moth is found from China to Australia, including in Java, Sulawesi, the Philippines, Borneo, New Guinea, the Solomon Islands, and Micronesia. The Asian corn borer is part of the species complex, Ostrinia, in which members are difficult to distinguish based on appearance. Other Ostrinia such as O. orientalis, O. scapulalis, O. zealis, and O. zaguliaevi can occur with O. furnacalis, and the taxa can be hard to tell apart.

Chilo auricilius, the gold-fringed rice stemborer or terai borer, is a moth in the family Crambidae. It was described by Gerald C. Dudgeon in 1905. It is found in India, Taiwan, Bhutan and Sri Lanka, as well as on Sulawesi, Borneo, Sangir Island and the Moluccas. The larvae bore into and feed on the stems of various grass family plants including sugarcane, rice and maize.

Chilo infuscatellus, the yellow top borer or sugarcane shoot borer, is a moth in the family Crambidae. It was described by the Dutch entomologist Samuel Constantinus Snellen van Vollenhoven in 1890. It is found in India, Myanmar, Tajikistan, Afghanistan, Korea, Taiwan, Malaysia, the Philippines and on Java and Timor.

<span class="mw-page-title-main">Stemborer</span> Index of animals with the same common name

A stemborer is any insect larva, or arthropod, that bores into plant stems. However the term most frequently refers among the Coleoptera to the larva of certain longhorn beetles such as Dorysthenes buqueti and those of the genus Oberea, and among the Lepidoptera to certain moths of the Crambidae, Castniidae, Gelechiidae, Nolidae, and Pyralidae families.

Sturmiopsis inferens is a species of fly in the family Tachinidae. It is native to Asia and is a parasitoid of various moth species whose larvae feed inside the stems of sugarcane, rice and other large grasses, including the Gurdaspur borer and the sugarcane shoot borer.

Stenachroia elongella, the sorghum earhead worm or cob borer, is a moth of the family Pyralidae. The species was first described by George Hampson in 1898. It is found in India and Sri Lanka.

References

  1. ↑ Heath, Jeffrey. "Guide to insects, arthropods, and molluscs of northern Dogon country". Archived from the original on 2021-03-07. Retrieved 2021-02-24.
  2. ↑ International Potato Center
  3. ↑ Nuss, M.; et al. (2003–2014). "GlobIZ search". Global Information System on Pyraloidea. Retrieved July 15, 2014.
  4. ↑ Jalaeian, M.; Golizadeh, A.; Sarafrazi, A. (August 2017). "The geographical distribution of moth stem borers (Lep.: Crambidae & Noctuidae) in paddy fields of Iran". Plant Pest Research. University of Guilan. 7 (2). Abstract. doi:10.22124/iprj.2017.2436.
  5. ↑ De Prins, J. & De Prins, W. (2017). "Chilo coimbatorensis Bhattacherjee, 1971". Afromoths. Retrieved November 28, 2017.
  6. ↑ Mohamed, H. M., Khan, Z. R., Overholt, W. A., & Elizabeth, D. K. (2004). Behaviour and biology of Chilo partellus (Lepidoptera: Pyralidae) on maize and wild gramineous plants. International Journal of Tropical Insect Science, 24(04), 287-297
  7. ↑ Kamala, V., Sharma, H. C., Manohar Rao, D., Varaprasad, K. S., Bramel, P. J., & Chandra, S. (2012). Interactions of spotted stem borer Chilo partellus with wild relatives of sorghum. Plant Breeding, 131(4), 511-521.
  8. ↑ Tamiru, A., Getu, E., Jembere, B., & Bruce, T. (2012). Effect of temperature and relative humidity on the development and fecundity of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). Bulletin of Entomological Research, 102(01), 9-15.
  9. ↑ Tamiru, A., Getu, E., Jembere, B., & Bruce, T. (2012). Effect of temperature and relative humidity on the development and fecundity of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). Bulletin of Entomological Research, 102(01), 9-15.
  10. ↑ Mutyambai, D. M., Midega, C. A., Bruce, T. J., van den Berg, J., Pickett, J. A., & Khan, Z. R. (2014). Behaviour and biology of Chilo partellus on maize landraces. Entomologia Experimentalis et Applicata, 153(2), 170-181
  11. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  12. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  13. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  14. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  15. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  16. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  17. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  18. ↑ Tamiru, A., Getu, E., Jembere, B., & Bruce, T. (2012). Effect of temperature and relative humidity on the development and fecundity of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). Bulletin of Entomological Research, 102(01), 9-15.
  19. ↑ Sharma, H. C., Dhillon, M. K., Pampapathy, G., & Reddy, B. V. S. (2007). Inheritance of resistance to spotted stem borer, Chilo partellus, in sorghum, Sorghum bicolor. Euphytica, 156(1-2), 117-128
  20. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved keys.lucidcentral.org
  21. ↑ Mohamed, H. M., Khan, Z. R., Overholt, W. A., & Elizabeth, D. K. (2004). Behaviour and biology of Chilo partellus (Lepidoptera: Pyralidae) on maize and wild gramineous plants. International Journal of Tropical Insect Science, 24(04), 287-297
  22. ↑ Mohamed, H. M., Khan, Z. R., Overholt, W. A., & Elizabeth, D. K. (2004). Behaviour and biology of Chilo partellus (Lepidoptera: Pyralidae) on maize and wild gramineous plants. International Journal of Tropical Insect Science, 24(04), 287-297
  23. ↑ Arshad, M. J., Freed, S., Akbar, S., Akmal, M., & Gul, H. T. (2013). Nitrogen Fertilizer Application in Maize and Its Impact on the Development of Chilo partellus (Lepidoptera: Pyralidae). Pakistan Journal Of Zoology, 45(1), 141-147 (PDF)
  24. ↑ Kamala, V., Sharma, H. C., Manohar Rao, D., Varaprasad, K. S., Bramel, P. J., & Chandra, S. (2012). Interactions of spotted stem borer Chilo partellus with wild relatives of sorghum. Plant Breeding, 131(4), 511-521.
  25. ↑ Midega, C. A., Khan, Z. R., Pickett, J. A., & Nylin, S. (2011). Host plant selection behaviour of Chilo partellus and its implication for effectiveness of a trap crop. Entomologia Experimentalis et Applicata, 138(1), 40-47
  26. ↑ Tamiru, A., Getu, E., Jembere, B., & Bruce, T. (2012). Effect of temperature and relative humidity on the development and fecundity of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). Bulletin of Entomological Research, 102(01), 9-15.
  27. ↑ Mutyambai, D. M., Midega, C. A., Bruce, T. J., van den Berg, J., Pickett, J. A., & Khan, Z. R. (2014). Behaviour and biology of Chilo partellus on maize landraces. Entomologia Experimentalis et Applicata, 153(2), 170-181
  28. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from http://keys.lucidcentral.org
  29. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  30. ↑ Arshad, M. J., Freed, S., Akbar, S., Akmal, M., & Gul, H. T. (2013). Nitrogen Fertilizer Application in Maize and Its Impact on the Development of Chilo partellus (Lepidoptera: Pyralidae). Pakistan Journal Of Zoology, 45(1), 141-147 (PDF)
  31. ↑ BioNET-EAFRINET. (2011). Chilo partellus (Swinhoe, 1885) - Spotted Stemborer. Retrieved from keys.lucidcentral.org
  32. ↑ Tamiru, A., Getu, E., Jembere, B., & Bruce, T. (2012). Effect of temperature and relative humidity on the development and fecundity of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). Bulletin of Entomological Research, 102(01), 9-15.
  33. ↑ Tamiru, A., Getu, E., Jembere, B., & Bruce, T. (2012). Effect of temperature and relative humidity on the development and fecundity of Chilo partellus (Swinhoe) (Lepidoptera: Crambidae). Bulletin of Entomological Research, 102(01), 9-15.
This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.