Brain and Optic Lobes

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)

Abstract

This chapter discusses different segments of brain and optical lobe. Brain includes neuropils of the subesophageal ganglion, which is composed of the fused ganglia from three postoral segmental neuromeres. These are located ventrally with respect to the digestive tract, as are ganglia of the thorax and abdomen. In most hemimetabolous insects, and in many aleopterans, the subesophageal ganglion is connected by paired circumesophageal commissures to the supraesophageal ganglion. In many crown taxa, the subesophageal and supraesophageal ganglia are fused, as is the case in honey bees or the fruit fly Drosophila melanogaster, which is the taxon used to summarize the major divisions of the brain. A consequence of fusion is that tracts of axons that would otherwise form the circumesophageal commissures are embedded within a contiguous neuropil. Further, the optic lobes of palaeopteran and neopteran insects consist of three retinotopic neuropils. These are the lamina, medulla, and lobula complex. In certain orders of insects, the lobula complex is divided into two separate neuropils: a lenticular lobula that is mainly composed of columnar neurons and a tectum-like lobula plate that is hallmarked by wide-field tangential neurons. However, in insects with an undivided lobula, deeper layers comprise tangential neurons that probably have the same functions as tangential neurons in the lobula plate.

Original languageEnglish (US)
Title of host publicationEncyclopedia of Insects
PublisherElsevier Inc.
Pages121-130
Number of pages10
ISBN (Print)9780123741448
DOIs
StatePublished - 2009

Fingerprint

optic lobe
Ganglia
Neuropil
neurons
brain
subesophageal ganglia
insects
Insects
Brain
Neurons
laminae (animals)
thorax
fruit flies
axons
digestive tract
abdomen
honey bees
Drosophila melanogaster
Honey
Bees

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Strausfeld, N. J. (2009). Brain and Optic Lobes. In Encyclopedia of Insects (pp. 121-130). Elsevier Inc.. https://doi.org/10.1016/B978-0-12-374144-8.00042-4

Brain and Optic Lobes. / Strausfeld, Nicholas J.

Encyclopedia of Insects. Elsevier Inc., 2009. p. 121-130.

Research output: Chapter in Book/Report/Conference proceedingChapter

Strausfeld, NJ 2009, Brain and Optic Lobes. in Encyclopedia of Insects. Elsevier Inc., pp. 121-130. https://doi.org/10.1016/B978-0-12-374144-8.00042-4
Strausfeld NJ. Brain and Optic Lobes. In Encyclopedia of Insects. Elsevier Inc. 2009. p. 121-130 https://doi.org/10.1016/B978-0-12-374144-8.00042-4
Strausfeld, Nicholas J. / Brain and Optic Lobes. Encyclopedia of Insects. Elsevier Inc., 2009. pp. 121-130
@inbook{5436c64fd1634d83b719bb5f01459069,
title = "Brain and Optic Lobes",
abstract = "This chapter discusses different segments of brain and optical lobe. Brain includes neuropils of the subesophageal ganglion, which is composed of the fused ganglia from three postoral segmental neuromeres. These are located ventrally with respect to the digestive tract, as are ganglia of the thorax and abdomen. In most hemimetabolous insects, and in many aleopterans, the subesophageal ganglion is connected by paired circumesophageal commissures to the supraesophageal ganglion. In many crown taxa, the subesophageal and supraesophageal ganglia are fused, as is the case in honey bees or the fruit fly Drosophila melanogaster, which is the taxon used to summarize the major divisions of the brain. A consequence of fusion is that tracts of axons that would otherwise form the circumesophageal commissures are embedded within a contiguous neuropil. Further, the optic lobes of palaeopteran and neopteran insects consist of three retinotopic neuropils. These are the lamina, medulla, and lobula complex. In certain orders of insects, the lobula complex is divided into two separate neuropils: a lenticular lobula that is mainly composed of columnar neurons and a tectum-like lobula plate that is hallmarked by wide-field tangential neurons. However, in insects with an undivided lobula, deeper layers comprise tangential neurons that probably have the same functions as tangential neurons in the lobula plate.",
author = "Strausfeld, {Nicholas J}",
year = "2009",
doi = "10.1016/B978-0-12-374144-8.00042-4",
language = "English (US)",
isbn = "9780123741448",
pages = "121--130",
booktitle = "Encyclopedia of Insects",
publisher = "Elsevier Inc.",

}

TY - CHAP

T1 - Brain and Optic Lobes

AU - Strausfeld, Nicholas J

PY - 2009

Y1 - 2009

N2 - This chapter discusses different segments of brain and optical lobe. Brain includes neuropils of the subesophageal ganglion, which is composed of the fused ganglia from three postoral segmental neuromeres. These are located ventrally with respect to the digestive tract, as are ganglia of the thorax and abdomen. In most hemimetabolous insects, and in many aleopterans, the subesophageal ganglion is connected by paired circumesophageal commissures to the supraesophageal ganglion. In many crown taxa, the subesophageal and supraesophageal ganglia are fused, as is the case in honey bees or the fruit fly Drosophila melanogaster, which is the taxon used to summarize the major divisions of the brain. A consequence of fusion is that tracts of axons that would otherwise form the circumesophageal commissures are embedded within a contiguous neuropil. Further, the optic lobes of palaeopteran and neopteran insects consist of three retinotopic neuropils. These are the lamina, medulla, and lobula complex. In certain orders of insects, the lobula complex is divided into two separate neuropils: a lenticular lobula that is mainly composed of columnar neurons and a tectum-like lobula plate that is hallmarked by wide-field tangential neurons. However, in insects with an undivided lobula, deeper layers comprise tangential neurons that probably have the same functions as tangential neurons in the lobula plate.

AB - This chapter discusses different segments of brain and optical lobe. Brain includes neuropils of the subesophageal ganglion, which is composed of the fused ganglia from three postoral segmental neuromeres. These are located ventrally with respect to the digestive tract, as are ganglia of the thorax and abdomen. In most hemimetabolous insects, and in many aleopterans, the subesophageal ganglion is connected by paired circumesophageal commissures to the supraesophageal ganglion. In many crown taxa, the subesophageal and supraesophageal ganglia are fused, as is the case in honey bees or the fruit fly Drosophila melanogaster, which is the taxon used to summarize the major divisions of the brain. A consequence of fusion is that tracts of axons that would otherwise form the circumesophageal commissures are embedded within a contiguous neuropil. Further, the optic lobes of palaeopteran and neopteran insects consist of three retinotopic neuropils. These are the lamina, medulla, and lobula complex. In certain orders of insects, the lobula complex is divided into two separate neuropils: a lenticular lobula that is mainly composed of columnar neurons and a tectum-like lobula plate that is hallmarked by wide-field tangential neurons. However, in insects with an undivided lobula, deeper layers comprise tangential neurons that probably have the same functions as tangential neurons in the lobula plate.

UR - http://www.scopus.com/inward/record.url?scp=84882848350&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84882848350&partnerID=8YFLogxK

U2 - 10.1016/B978-0-12-374144-8.00042-4

DO - 10.1016/B978-0-12-374144-8.00042-4

M3 - Chapter

AN - SCOPUS:84882848350

SN - 9780123741448

SP - 121

EP - 130

BT - Encyclopedia of Insects

PB - Elsevier Inc.

ER -