corpus allatum
Quick Summary
The corpus allatum is a pair of bodies in insects, sometimes fused, that are closely associated with the corpora cardiaca. These structures secrete hormones, most notably juvenile hormone. Juvenile hormone is crucial for insect development, controlling the retention of juvenile characteristics during larval stages and influencing the process of molting, which is the shedding of the exoskeleton. In adult insects, this hormone is also necessary for normal egg production in females. The corpus allatum is part of the insect endocrine system, which regulates various functions including molting, reproduction, and metabolism.123
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endocrine systemClass Insecta…the paired corpora allata (singular, corpus allatum) are both neurohemal organs that store brain neurohormones, but each has some endocrine cells as well. The ventral nerve cord and associated ganglia also contain neurosecretory cells and have their own neurohemal organs; i.e., the multiple perisympathetic organs located along the ventral nerve…
Read More…the paired corpora allata (singular, corpus allatum) are both neurohemal organs that store brain neurohormones, but each has some endocrine cells as well. The ventral nerve cord and associated ganglia also contain neurosecretory cells and have their own neurohemal organs; i.e., the multiple perisympathetic organs located along the ventral nerve…
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nervous systemArthropods…hormone is released by the corpora allata, another pair of non-neural endocrine glands, located behind the corpora cardiaca. The successive life stages in insect development are, therefore, determined by the varying levels of ecdysone and juvenile hormone.
Read More…hormone is released by the corpora allata, another pair of non-neural endocrine glands, located behind the corpora cardiaca. The successive life stages in insect development are, therefore, determined by the varying levels of ecdysone and juvenile hormone.
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insectRole of hormones…behind the brain, called the corpus allatum, secretes juvenile hormone (also known as neotenin). As long as this hormone is present in the blood the molting epidermal cells lay down a larval cuticle. In the last larval stage, juvenile hormone is no longer produced, and the insect undergoes metamorphosis into…
Read More…behind the brain, called the corpus allatum, secretes juvenile hormone (also known as neotenin). As long as this hormone is present in the blood the molting epidermal cells lay down a larval cuticle. In the last larval stage, juvenile hormone is no longer produced, and the insect undergoes metamorphosis into…
Read More- reproductive behaviourHormonal influences
Instead, stimulation by the corpus allatum, an organ in insects that corresponds in function to the pituitary gland, causes the secretion of liquid substances on the body surface. These substances are transmitted as liquids, or, even more significantly, as gases, to the recipient, in which they are usually detected…
Read MoreInstead, stimulation by the corpus allatum, an organ in insects that corresponds in function to the pituitary gland, causes the secretion of liquid substances on the body surface. These substances are transmitted as liquids, or, even more significantly, as gases, to the recipient, in which they are usually detected…
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