Mormon cricket

Last updated

Mormon cricket
Mormon cricket (red background).jpg
Status TNC G5.svg
Secure  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Ensifera
Family: Tettigoniidae
Genus: Anabrus
Species:
A. simplex
Binomial name
Anabrus simplex
Haldeman, 1852
Anabrus simplex green form of female, ovipositing in soil. Anabrus simplex P1170553a.jpg
Anabrus simplex green form of female, ovipositing in soil.

The Mormon cricket (Anabrus simplex) is a large insect native to western North America in rangelands dominated by sagebrush and forbs. Anabrus is a genus in the shield-backed katydid subfamily in the Tettigoniidae family, commonly called katydids, bush crickets, and previously "long-horned grasshoppers". Its common name, "Mormon cricket", is a misnomer: true crickets are of the family Gryllidae.

Contents

The Mormon cricket takes its common name from the prominent role it played in the miracle of the gulls, after the Mormon settlers in Utah had encountered them while pushing westward. [2]

Although flightless, the Mormon cricket may travel up to two kilometres a day in its swarming phase, [3] during which it may be a serious agricultural pest and sometimes a traffic hazard.

Description

Mormon crickets can grow to almost 8 cm (3 inches) in length. Individuals vary in coloration: the overall color may be black, brown, red, purple or green. The pronotum, the dorsal "shield" above the prothorax, covers vestigial wings); in some specimens it bears colored markings. The abdomen may have a striped appearance. Like many Tettigoniidae, females have a long ovipositor, which should not be mistaken for a stinger.

As is characteristic of Tettigoniidae, the antennae are long and filamentous. They are in general longer than the head plus body, though the ovipositor extends to beyond the ends of the antennae.

As also is the case in swarming locusts, high population densities of swarming Mormon crickets cause them to undergo changes in morphology and coloration: solitaria, individuals in the solitary phase, typically have green or purple coloration, while swarming individuals, gregaria, are often black, brown or red.

Life cycle

Utah, October 2005 Mormon Cricket, female, Utah.jpg
Utah, October 2005

Mormon cricket eggs hatch mostly in the spring after they are laid, although in some areas eggs may take as many as five years to hatch. Hatching begins when soil temperatures reach 4 °C (40 °F). The nymphs pass through seven instars before reaching the adult stage, typically taking 60 to 90 days. [4] [5]

Breeding begins within 10 to 14 days of reaching the adult stage. The male passes to the female a large spermatophore which can be up to 27% of his body weight. The spermatophore is mostly food for the female to consume but also contains sperm to fertilize her eggs. This nuptial gift causes swarming-phase females to compete for males, a behavior not seen in solitary-phase females. [5]

The female lays her eggs by thrusting her long ovipositor deep into the soil. Each female can lay over one hundred eggs, with individual eggs having the appearance of a grain of rice with a gray to purplish color.

Swarming

Nevada, summer 2006 Mormon crickets in Nevada.jpg
Nevada, summer 2006

The Mormon cricket exists in populations of relatively low density throughout most of its range. At certain times and places, population explosions or infestations occur in which large numbers of the crickets form roving bands. These bands may include millions of individuals and be found with densities of up to 100 individuals per square meter. These infestations may last years or even decades, and are characterized by a gradual increase and then decrease in population. The factors that trigger these infestations are poorly understood, but are thought to be weather-related.

Research published in 2006 shows that Mormon crickets move in these migratory bands, firstly to find new sources of the critical nutrients of protein and salt, and secondly to avoid being eaten by hungry crickets approaching from the rear. The Mormon cricket's cannibalistic behavior may lead to swarm behavior because crickets may need to move constantly forward to avoid attacks from behind. [6] [7]

When a large band crosses a road, it can create a safety hazard by causing distracted revulsion on the part of the driver, and by causing the road surface to become slick with crushed crickets. [8] The crickets can cause devastation to agriculture. [2]

Diet

The Mormon cricket shows a marked preference for forbs, but grasses and shrubs such as sagebrush are also consumed. [9] Mormon crickets also eat insects, including other Mormon crickets, especially individuals that have been killed or injured by automobiles or insecticides. Cannibalistic behavior may be a result of protein and salt deficiency. Swarming behavior may in turn be a strategy to avoid predation by other Mormon crickets. [6] A journal documenting an 1846 journey along the Oregon Trail describes an encounter with the crickets and notes their cannibalistic behavior:

The ground, for a strip of about four miles, was covered with black crickets of a large size. I saw some that were about three inches in length, and measuring about three-fourths of an inch in diameter; but the common size were two inches in length and one-half or five-eighths of an inch in diameter; their legs were large in proportion to the size of their bodies. Some were singing on stalks of wild sage; others crawling in every direction. Our teams made great havoc among them; so numerous were they that we crushed them at every step. As soon as one was killed, others of them would alight upon it and devour it. [10]

Control

Multicolored swarm in Nevada, 2002. Anabrus simplex (Nevada).jpg
Multicolored swarm in Nevada, 2002.

Mormon crickets are preyed upon by a wide variety of birds and mammals. These predators include California gulls, crows, coyotes and various rodents. There are no predators that specialize on Mormon crickets, which may be explained by the cricket's migratory habits and large population fluctuations. Gordius robustus, a species of horsehair worm, is a parasite of the Mormon cricket, [11] as is Ooencyrtus anabrivorus. [12]

The most common chemical control method used is carbaryl (typically sold as "Sevin Dust") bait. This bait kills both the Mormon crickets that eat the bait, and the crickets that eat crickets that have eaten the bait. Insecticides applied directly to crops may kill the insects, but due to the large size of swarms, this method usually does not save the crop from being destroyed.

As Mormon crickets are flightless, physical barriers may be effective. Barriers should be at least two feet high and made of a smooth material. Residents of some small towns have used boom boxes and sound systems playing hard rock music in attempts to divert the moving swarms away from crops and houses. [13]

Another method for the control of Mormon crickets is the use of a biopesticide based on the fungus Nosema locustae . N. locustae is a naturally occurring microbe the spores of which kill orthopterans by interfering with the digestive system. According to the U.S. Environmental Protection Agency, its use has no adverse effect on humans or the environment. [14]

Historical

Mormon crickets appear in some traditional Native American diets such as that of the Achomawi. [15] [16]

An infestation of Mormon crickets in the Salt Lake Valley the late 1840s decimated the crops of Latter-day Saint colonists in the area, which is why they are referred to as Mormon crickets. This is most famously recalled in the "Miracle of the gulls" story. [17] [18]

In 2003, officials in Utah, Idaho and Nevada said that year's infestation might be the worst in recent history. [8]

Related Research Articles

<span class="mw-page-title-main">Tettigoniidae</span> Family of insects

Insects in the family Tettigoniidae are commonly called katydids or bush crickets. They have previously been known as "long-horned grasshoppers". More than 8,000 species are known. Part of the suborder Ensifera, the Tettigoniidae are the only extant (living) family in the superfamily Tettigonioidea.

<i>Helicoverpa zea</i> Species of moth

Helicoverpa zea, commonly known as the corn earworm, is a species in the family Noctuidae. The larva of the moth Helicoverpa zea is a major agricultural pest. Since it is polyphagous during the larval stage, the species has been given many different common names, including the cotton bollworm and the tomato fruitworm. It also consumes a wide variety of other crops.

The miracle of the gulls is an 1848 event often credited by members of the Church of Jesus Christ of Latter-day Saints for saving the second harvest of the Mormon pioneers in the Salt Lake Valley. While absent in contemporary accounts, later accounts stated seagulls miraculously saved the 1848 crops by eating thousands of insects that were devouring their fields. The first crop was planted in 1847 a few days after the pioneers entered the valley, which was very late in the growing season and produced a meager but usable harvest. Next spring, using seed from the first harvest, they planted their second crop, only to watch in dismay as the crickets attacked. Less than two years earlier, in October 1846, many of them were saved by quail that flew into their camp, on their trek to the Great Salt Lake and made available as food.

<span class="mw-page-title-main">California gull</span> Species of bird

The California gull is a medium-sized gull, smaller on average than the herring gull, but larger on average than the ring-billed gull. It lives not just in California, but up and down the entire Western coast of North America, and has breeding ground inland. The yellow bill has a black ring.

<span class="mw-page-title-main">Apple maggot</span> Species of fly

The apple maggot, also known as the railroad worm, is a species of fruit fly, and a pest of several types of fruits, especially apples. This species evolved about 150 years ago through a sympatric shift from the native host hawthorn to the domesticated apple species Malus domestica in the northeastern United States. This fly is believed to have been accidentally spread to the western United States from the endemic eastern United States region through contaminated apples at multiple points throughout the 20th century. The apple maggot uses Batesian mimicry as a method of defense, with coloration resembling that of the forelegs and pedipalps of a jumping spider.

<span class="mw-page-title-main">Grasshopper</span> Common name for a group of insects

Grasshoppers are a group of insects belonging to the suborder Caelifera. They are among what is possibly the most ancient living group of chewing herbivorous insects, dating back to the early Triassic around 250 million years ago.

<span class="mw-page-title-main">Dobsonfly</span> Subfamily of insects

Dobsonflies are a subfamily of insects, Corydalinae, part of the Megalopteran family Corydalidae. The larvae are aquatic, living in streams, and the adults are often found along streams as well. The nine genera of dobsonflies are distributed in the Americas, Asia, and South Africa.

<span class="mw-page-title-main">Powderpost beetle</span> Subfamily of beetles

Powderpost beetles are a group of seventy species of woodboring beetles classified in the insect subfamily Lyctinae. These beetles, along with spider beetles, death watch beetles, common furniture beetles, skin beetles, and others, make up the superfamily Bostrichoidea. While most woodborers have a large prothorax, powderpost beetles do not, making their heads more visible. In addition to this, their antennae have two-jointed clubs. They are considered pests and attack deciduous trees, over time reducing the wood to a powdery dust. The damage caused by longhorn beetles is often confused with that of powderpost beetles, but the two groups are unrelated. The larvae of the Cerambycidae are white, straight and generally flat-headed, whereas those of the Bostrichidae are white and C-shaped.

<span class="mw-page-title-main">African armyworm</span> Species of moth

The African armyworm, also called okalombo, kommandowurm, or nutgrass armyworm, is a species of moth of the family Noctuidae. The larvae often exhibit marching behavior when traveling to feeding sites, leading to the common name "armyworm". The caterpillars exhibit density-dependent polyphenism where larvae raised in isolation are green, while those raised in groups are black. These phases are termed solitaria and gregaria, respectively. Gregaria caterpillars are considered very deleterious pests, capable of destroying entire crops in a matter of weeks. The larvae feed on all types of grasses, early stages of cereal crops, sugarcane, and occasionally on coconut. The solitaria caterpillars are less active and undergo much slower development. The species is commonly found in Africa, but can also be seen in Yemen, some Pacific islands, and parts of Australia. African armyworm outbreaks tend to be devastating for farmland and pasture in these areas, with the highest-density outbreaks occurring during the rainy season after periods of prolonged drought. During the long dry seasons ("off-season"), the population densities are very low and no outbreaks are seen.

<i>Phthorimaea operculella</i> Species of moth

Phthorimaea operculella, also known as the potato tuber moth or tobacco splitworm, is a moth of the family Gelechiidae. It is an oligophagous insect that feeds on the plant family Solanaceae and is especially known for being a major pest of potato crops. Currently farmers utilize insecticides, parasites, and sprinkler irrigation in order to prevent P. operculella from infesting their croplands.

<i>Saga pedo</i> Species of cricket-like animal

Saga pedo is a species of wingless bush cricket from the southern half of Europe and western and central Asia. This brown or green bush cricket typically has a total length, from the head to the tip of the ovipositor, of up to 10.5 cm (4.1 in), but exceptionally it may reach 12 cm (4.7 in), which makes it one of the largest European insects and one of the world's largest Orthoptera. The head-and-body alone typically is 5–7 cm (2.0–2.8 in) long in adults, but may reach up to 7.8 cm (3.1 in).

<i>Gryllus veletis</i> Species of cricket

Gryllus veletis, commonly known as the spring field cricket, is abundant throughout eastern North America. G. veletis is a solitary, aggressive, omnivorous, burrow-inhabiting species of cricket. This species is commonly confused with Gryllus pennsylvanicus, as they inhabit the same geographical area. However, the two species are easily distinguished through examination of life history, ovipositor and behavioural differences. Predators of G. veletis include American toads, wild turkeys, red-tailed hawks, wolf spiders and red-backed salamanders.

<span class="mw-page-title-main">Cricket (insect)</span> Small insects of the family Gryllidae

Crickets are orthopteran insects which are related to bush crickets, and, more distantly, to grasshoppers. In older literature, such as Imms, "crickets" were placed at the family level, but contemporary authorities including Otte now place them in the superfamily Grylloidea. The word has been used in combination to describe more distantly related taxa in the suborder Ensifera, such as king crickets and mole crickets.

Rhagoletis juglandis, also known as the walnut husk fly, is a species of tephritid or fruit fly in the family Tephritidae. It is closely related to the walnut husk maggot Rhagoletis suavis. This species of fly belongs to the R. suavis group, which has a natural history consistent with allopatric speciation. The flies belonging to this group are morphologically distinguishable.

<i>Acanthoplus discoidalis</i> Species of cricket-like animal

Acanthoplus discoidalis is a species in the Hetrodinae, a subfamily of the katydid family (Tettigoniidae). Like its closest relatives, Acanthoplus discoidalis variously bears common names such as armoured katydid, armoured ground cricket, armoured bush cricket, corn cricket, setotojane and koringkriek. The species is native to parts of Angola, Namibia, Botswana, Zimbabwe and South Africa.

<i>Phaneroptera nana</i> Species of cricket-like animal

Phaneroptera nana, common name southern sickle bush-cricket, is a species in the family Tettigoniidae and subfamily Phaneropterinae. It has become an invasive species in California where it may be called the Mediterranean katydid.

<i>Tettigonia cantans</i> Species of cricket-like animal

Tettigonia cantans is a species of bush crickets belonging to the family Tettigoniidae subfamily Tettigoniinae.

A nuptial gift is a nutritional gift given by one partner in some animals' sexual reproduction practices.

<i>Thrips tabaci</i> Species of thrip

Thrips tabaci is a species of very small insect in the genus Thrips in the order Thysanoptera. It is commonly known as the onion thrips, the potato thrips, the tobacco thrips or the cotton seedling thrips. It is an agricultural pest that can damage crops of onions and other plants, and it can additionally act as a vector for plant viruses.

<i>Caedicia simplex</i> Species of insect

Caedicia simplex is a species of bush cricket or katydid, native to New Zealand and Australia. A common name is the "common garden katydid".

References

  1. "NatureServe Explorer 2.0".
  2. 1 2 Hartley, William (Summer 1970). "Mormons, Crickets, and Gulls: A New Look at an Old Story". Utah Historical Quarterly. 38 (3): 224–239. doi:10.2307/45058907. JSTOR   45058907. S2CID   254430829.
  3. Lorch, Patrick D.; Sword, Gregory A.; Gwynne, Darryl T.; Anderson, Gerald L. (October 1, 2005). "Radiotelemetry reveals differences in individual movement patterns between outbreak and non-outbreak Mormon cricket populations" (PDF). Ecological Entomology. 30 (5): 548–555. doi:10.1111/j.0307-6946.2005.00725.x. S2CID   53489161 . Retrieved March 31, 2013.
  4. "Mormon Cricket". tmparksfoundation. Retrieved 2024-02-08.
  5. 1 2 "Mormon cricket" (PDF). Wyoming Agricultural Experiment Station Bulletin (912). May 1991.
  6. 1 2 Simpson, S.J.; Sword, G.A.; Lorch, P.D.; Couzin, I.D. (March 14, 2006). "Cannibal crickets on a forced march for protein and salt". Proceedings of the National Academy of Sciences. 103 (11): 4152–4156. doi: 10.1073/pnas.0508915103 . PMC   1449662 . PMID   16537500.
  7. Sword, Gregory. "Mormon Cricket Ecology and Evolution". University of Sydney, School of Biological Sciences. Retrieved March 31, 2013.
  8. 1 2 Nelson, James (June 14, 2003). "Mormon Crickets Devour Crops, Turn Roads 'Blood Red'". Reuters.
  9. "Mormon Cricket Anabrus simplex Haldeman". Wyoming Agricultural Experiment Station Bulletin 912. September 1994. Retrieved 4 April 2013.
  10. Palmer, Joel, Journal of Travels over the Rocky Mountains, to the Mouth of the Columbia River, p.79 (1847)
  11. Hanelt, Ben; Janovy Jr, John (February 1999). "The life cycle of a horsehair worm: Gordius robustus (Nematomorpha: Gordioidea)". The Journal of Parasitology. 85 (1): 139–141. doi:10.2307/3285720. JSTOR   3285720. PMID   10207382.
  12. Gahan, A.B. (1942). "Descriptions of five new species of Chalcidoidea, with notes on a few described species (Hymenoptera)". Proceedings of the United States National Museum. 92 (3137): 41–51. doi:10.5479/si.00963801.92-3137.41. hdl:10088/16400.
  13. Carlton, Jim (April 24, 2009). "Against Insect Plague, Nevadans Wield Ultimate Weapon: Hard Rock". The Wall Street Journal.
  14. "Nosema Locustae (117001) Fact Sheet" (PDF). U.S. Environmental Protection Agency. October 2000. Retrieved 2013-08-30.
  15. Olmsted, D.L.; Stewart, Omer C. (1978). "Achumawi". In Sturtevant, William C. (ed.). Handbook of North American Indians: California. Washington, DC: US Govt Printing Office. p. 228. ISBN   9780160045745.
  16. Kerns, Virginia (2010). Journeys West: Jane and Julian Steward and their Guides . Lincoln: University of Nebraska Press. pp.  280–281. ISBN   978-0-8032-2508-4.
  17. Fife, Austin and Alta (1956). Saints of the Sage and Saddle: Folklore Among the Mormons. Bloomington, Indiana: Indiana University Press. pp. 75–77.
  18. Saints: The Story of the Church of Jesus Christ of Latter-day Saints, Volume 2: No Unhallowed Hand, 1846-1893. Salt Lake City: The Church of Jesus Christ of Latter-day Saints. 2020. pp. 99–105. Retrieved 2023-06-24.