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Gryllus bimaculatus
African.field.cricket.arp.jpg
Gryllus bimaculatus
Scientific classification e
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Ensifera
Family: Gryllidae
Genus: Gryllus
Species: Gryllus bimaculatus
Binomial name
Gryllus bimaculatus
De Geer, 1773

Gryllus bimaculatus is one of many cricket species known as field crickets. Also known as the African or Mediterranean field cricket or as the two-spotted cricket, it can be discriminated from other Gryllus species by the two dot-like marks on the base of its wings.

The species is popular for use as a food source for insectivorous animals like spiders and reptiles kept as pets or in zoos. They are easy to raise and do not require prolonged exposure to cold in order to complete their life cycle.

Behavior[edit]

Fighting[edit]

In the wild, male crickets tolerate one another and will fight until there is a winner. The loser usually retreats without serious injury. The fighting method involves opening the mandibles as wide as possible, gripping onto the opponent's mandibles and pushing with the hind legs.

Chirping[edit]

Male crickets of this species produce several distinctive chirps, though each sound is made by rubbing the two outer wings together. Loud and steady chirps made throughout the night are to attract females and to warn off other males. Loud fast-frequency chirps are emitted when males encounter one another and are preparing to fight. They are intended to frighten off the rival male. A soft clipping sound is made when a female is known to be nearby. Its purpose is to encourage the female to mate.

Shelter[edit]

These crickets can be found hiding under logs, grasses, and in crevices. They can also dig holes into the ground to create homes for themselves, or live in holes created by other animals. Males are territorial and will fight off other males, but allow any number of females to coexist in the same shelter.

Cannibalism[edit]

Cannibalism is extremely rare, but females have been observed to eat males if there is not enough food to eat.

Circadian Rhythm[edit]

Pigment Dispersing Factor has been implicated in the nocturnal rhythms of crickets.[1]

Breeding[edit]

Females have a tubular organ at the rear, known as an ovipositor, which is used to lay eggs into the ground. They lay their eggs into humid soil and the baby crickets hatch in about two weeks.

Economic importance[edit]

Gryllus bimaculatus is widely used by suppliers of live crickets for feeding to pet and zoo animals.[2]

References[edit]

  1. ^ Hassaneen E, El-Din Sallam A, Abo-Ghalia A, Moriyama Y, Karpova SG, Abdelsalam S, Matsushima A, Shimohigashi Y, Tomioka K (26 February 2011). "Pigment-dispersing factor affects nocturnal activity rhythms, photic entrainment, and the free-running period of the circadian clock in the cricket gryllus bimaculatus". Journal of Biological Rhythms 1: 3–13. doi:10.1177/0748730410388746. 
  2. ^ "Crickets". The Amphibian. Retrieved 17 May 2015. 

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Gryllus_bimaculatus — Please support Wikipedia.
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49 news items

Tech Times

Tech Times
Sun, 15 Mar 2015 07:03:45 -0700

For the new study published in the journal Science Advances on March 13, Paul Stevenson, from the Leipzig University, and Jan Rillich, from the Free University of Berlin in Germany, treated Mediterranean field crickets (Gryllus bimaculatus) with nitric ...

Entomology Today

Entomology Today
Mon, 22 Dec 2014 09:15:00 -0800

One species, Gryllus bimaculatus, is a European species which is very widespread. Its range covers at least three continents, from Europe to Asia to Africa. It's the standard cricket sold in European pet stores, and has replaced A. domesticus as a ...

Bowdoin News

Bowdoin News
Tue, 22 Oct 2013 06:41:15 -0700

Adam Zhang '14 presents on his neuroscience research, "Quantifying Changes in Semaphorin Expression: Adam Zhang '14 presents on his neuroscience research, “Quantifying Changes in Semaphorin Expression after Deafferentation in Gryllus bimaculatus ...

Mirror.co.uk

Mirror.co.uk
Fri, 06 Sep 2013 16:01:01 -0700

An insect lover who released 1,000 crickets in his back garden to recreate the sounds of the Med has been given a police warning. Daniel Emlyn-Jones, 40, bought the bugs online for £40 but was told they can harm native wildlife and has had to use pest ...
 
New York Times
Sat, 05 Nov 2011 13:39:11 -0700

“Worthless,” his patron, Chang Hongwei, a retired mechanical engineer, growled as he yanked Big Red Belly from the arena and unceremoniously ended his brief fighting career. “Next!” Countless members of the Gryllus bimaculatus clan, also known as field ...
 
Public Radio International PRI
Tue, 07 Feb 2012 07:04:13 -0800

This is how the field criket, Gryllus bimaculatus sings by rubbing its wings together. Sound and image have been slowed down from original. Credit: Fernando Montealegre-Z. 0. facebook Share on Facebook · twitter Share on Twitter · googleplus Share on ...
 
Scientific American (blog)
Thu, 22 Dec 2011 07:39:08 -0800

In order to investigate the source of the heightened aggression that results from the winner effect, researchers Jan Rillich and Paul Anthony Stevenson staged “tournaments” of cricket fights, using Mediterranean field crickets (Gryllus bimaculatus ...
 
New Scientist
Fri, 14 Jan 2011 06:53:27 -0800

And once he put it to the test using field crickets (Gryllus bimaculatus), he found it isn't accurate. Instead, female crickets prefer the higher-pitched and louder songs sung by younger males, he says. Verburgt and colleagues recorded the mating songs ...
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