Neurons for male mating in C . elegans

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Neurons for male mating in C. elegans Nikhil Bhatla January 16, 2013 MIT IAP

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Neurons for male mating in C . elegans. Nikhil Bhatla January 16, 2013 MIT IAP. Mating in C. elegans. Wormbook.org. C. elegans hermaphrodites vs. males. S permatheca. WormAtlas.org. The male tail. PCS. spicules. rays. hook. cloaca. fan. Ventral view. WormAtlas.org. - PowerPoint PPT Presentation

Transcript of Neurons for male mating in C . elegans

Neural circuits for male mating amongst C. elegans

Neurons for male mating in C. elegansNikhil Bhatla

January 16, 2013MIT IAPMating in C. elegans

Wormbook.org

C. elegans hermaphrodites vs. males

SpermathecaWormAtlas.orgThe male tail

Ventral viewspiculescloacafanrayshookPCSWormAtlas.org

The male tail

Ventral viewSide viewhookPCSraysspiculeshookLiu & Sternberg 1995The male tail

WormAtlas.orgSensilla are inervated by neural dendritesWormAtlas.org

Steps in mating

Jarrells..Emmons 2012Step #1: Males chemotax toward hermaphrodite-conditioned media

White..Jorgensen 2007

AWC, AWA & CEM are involved in male chemotaxis to hermaphrodite odors White..Jorgensen 2007Hermaphrodites with a masculine nervous system are attracted to hermaphrodite odors

White..Jorgensen 2007Step #2: Structures required for contact response

Liu & Sternberg 1995Steps #2 and #4: Structures required for contact response and turning

Liu & Sternberg 1995

Liu & Sternberg 1995wild-type:tight turnLast 3 rays ablated:late turnDopaminergic rays (5A, 7A, 9A) ablated:wide, sloppy turnExogenous serotonin induces ventral coiling, perhaps by directly contracting muscleLoer & Kenyon 1993

mMSerotonergic neurons in the male tail

Loer & Kenyon 1993Step #5: Locate the vulva

Liu & Sternberg 1995Steps #6 and #7: Insert spicule into vulva and ejaculate

Liu & Sternberg 1995Muscle structure for spicule protractionGarcia & Sternberg 2001

Steps for spicule insertion

Garcia & Sternberg 2001


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Neurons for male mating in C. elegans Nikhil Bhatla January 16, 2013 MIT IAP.

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