PMID: 12770461May 29, 2003Paper

Developmental changes in teratocytes of the braconid wasp Cotesia congregata in larvae of the tobacco hornworm, Manduca sexta

Journal of Insect Physiology
N E Beckage, I d. Buron

Abstract

The endoparasitic wasp Cotesia congregata develops in the hemocoel of larval stages of the tobacco hornworm, Manduca sexta. Teratocytes were released from the serosal membrane during hatching of the first instar wasp larva at 2-3days after oviposition; about 160 cells were released per embryo. The cells increased in diameter from about 10 to >200&mgr;m prior to wasp emergence. Nascent microvilli, visible on the cell surface before hatching of the first instar larva, rapidly increased in length and number following release of the cells. Irrespective of when the wasps were due to emerge, or how many parasitoids were present in the host, dramatic cytological changes occurred in the cells during the last instar of the host's development. Many of these morphological and ultrastructural changes were symptomatic of the cytological features of degenerating or apoptotic cells, and large numbers of vesicles appeared interspersed amongst the microvilli. The nucleus developed extensive dentritic ramifications, and the chromatin condensed in large clumps on the inner nuclear membrane. At the final stages of the wasps' development, the nucleus occupied the bulk of the interior of the cell. The cytoplasm gradually grew dramatically more elect...Continue Reading

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Citations

Oct 18, 2000·Journal of Insect Physiology·M HottaT Tanaka
May 29, 2003·Journal of Insect Physiology·Marianne AlleyneRodrigo R. Diaz
Nov 14, 2002·Insect Biochemistry and Molecular Biology·T J ColeS B Ramaswamy
Oct 12, 2013·Annual Review of Entomology·Lynn M Riddiford, Bruce A Webb
Aug 17, 2005·Insect Biochemistry and Molecular Biology·Ravikumar GopalapillaiTakashi Okuda
Jul 9, 2013·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Md Ramjan AliYonggyun Kim
Sep 17, 2016·The Journal of Experimental Biology·Shelley A AdamoCarol I Miles
May 24, 2017·Parasitology·Jérémy GauthierElisabeth A Herniou
Jul 6, 2019·Frontiers in Physiology·Rosanna SalviaPatrizia Falabella
Jun 9, 2018·Nature Communications·Zhi-Zhi WangXue-Xin Chen

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