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Invertebrate Brain Gallery

Many invertebrate animals have evolved a rich variety of brains (head ganglia). Unusually large brains of squids and octopuses and small but sophisticated brains of arthropods, especially those of insects, are among the most fascinating brains created on earth by natural selection. Here, photographs of invertebrates of 6 phyla, 35 orders and 47 species and those of their central nervous systems are presented, with brief explanations of their characteristics. Enjoy seeing the pictures and consider evolution of brains in invertebrates. These images can be only used for research and education freely. Providers (Dr. Makoto Mizunami) have copyright for images and documents.

Gryllus bimaculatus Back to the top page of brain gallery
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Author Comment
NakamuraF
2006-10-25
18:48
Two-spotted cricket/ Gryllus bimaculatus
Body length: 2.5-4.0 cm.
Crickets are known for their chirp. Only male crickets can chirp; male wings have ridges that act like a "comb and file" instrument. The song is species-specific. Crickets are popular pets and considered good luck in Asia, especially China.
The brain consists of 3 neuromeres, protocerebrum, deutocerebrum and tritocerebrum. The protocerebrum receives projection from optic lobes located posterior to the compound eyes. In the photograph, the tritocerebrum is beneath the deutocerebrum. The deutocerebrum processes information from the antennae. Numerous peripheral nerves deriving from the subesophageal ganglion innervate the mouthparts.

Infomation

ID50
AuthorNakamuraF
Date2006-10-25
SeqC06
Views5060
Keyword

Arthropoda
  • Insecta
Links

Relative URL
Fighting behavior of male cricketsikeno
Courtship behavior of the cricketikeno
Fighting behavior(High Speed)ikeno
Wikipediaikeno
Brain Gallery
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