Corpora Allata

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Corpora Allata

glands of internal secretion in insects. Corpora allata are a pair of small, compact glandular organs covered with connective-tissue membrane. They are modified coelomoducts of the maxillary segment of the head and are located behind the brain above the fore-intestine. The function of the corpora allata is regulated by the sympathetic nervous system. They elaborate juvenile hormone, which prevents conversion of the larva to a pupa and to an adult insect and stimulates growth and development of larval organs. In the final larval stage, the action of juvenile hormone gradually diminishes. This is because its concentration in the blood decreases, since the growth of the larval body exceeds that of the corpora allata. Removal of the corpora allata in a larva causes premature metamorphosis into a miniature adult individual. In adult insects the hormone of the corpora allata stimulates maturation of the sex cells.

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No references found			Siva-Jothy and Rolff permitted some of their beetles to mate, then transferred the insects' corpora allata to virgin beetles. Beetle brains show how sex shortens life. (Tough Tradeoff) by Milius, S. / Science News INTRODUCTION The corpora allata (CA), paired-sphere shaped organs of the retrocerebral neuroendocrine complex, are the glandular source of juvenile hormone (JH) in insects. EFFECTS OF EXOGENOUS JUVENILE HORMONE ON VITELLOGENESIS IN THE ... by Bradley, James T.; Shim, Hi Shin; Moody, Kelley / Journal of the Alabama Academy of Science			Coronel, Battle of 1914 Coroner coronet coronet band Coronilla Coronis Coronium coronizing coronoid coronoid fossa coronoid process coronule Corophiidae Coropuna, Nevado Corot Corot, Camille Corot, Jean Baptiste Camille Corot, Jean-Baptiste Camille corotating corotating interaction regions coroutine Coroutine Pascal CORP Corpo Volontari Della Liberta Corpo Volontari Della Libertà Corpora Allata corpora quadrigemina Corporal Corporal Punishment corporate finance corporate income tax corporate portal Corporate style Corporation corporation cock Corporation for Jefferson's Poplar Forest Corporation for National Research Initiatives Corporation for Open Systems Corporation for Research and Educational Networking corporation stop corporation tax corporatism Corporative State corporeal corposant Corps Corps Commander Corps de Ballet corps de logis Corps of Pages Corps Volant			Corpo Bandistico Malcesine Corpo de Bombeiros Militar do Rio de Janeiro Corpo de Operações Especiais Corpo Dei Carabinieri Corpo di Spedizione Italiano Corpo Elementare Corpo Italiano Di Liberazione Corpo Musicale di Parre Corpo Nacional de Escutas Corpo Nazionale Giovani Esploratori Italiani Corpo Nazionale Soccorso Alpino e Speleologico Corpo Reticolare Corpo Truppe Volontarie Corpo Volontari Della Liberta Corpo Volontari Della Libertà Corpo Volontari Protezione Civile Corpo Volontario Soccorso Civile Corpo Volontario Soccorso in Mare corpocracies corpocracy corpocratic corpor- corpora corpora corpora corpora corpora corpora albicantia corpora albicantia Corpora Allata Corpora amylacea Corpora amylacea Corpora amylacea Corpora amylacea Corpora amylacea Corpora and NLP Corpora arenacea Corpora arenacea corpora bigemina corpora bigemina corpora bigemina corpora bigemina corpora bigemina corpora callosa corpora callosa corpora callosa Corpora Cardiaca and Corpora Allata Corpora cavernosa Corpora cavernosa Corpora cavernosa Corpora cavernosa penis Corpora cavernosa penis Corpora cavernosa penis corpora lutea corpora lutea corpora lutea Corpora mamillaria Corpora mamillaria Corpora mammillaria Corpora mammillaria

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