What causes some parasitic worms to alter a host insect's behavior?

💡 Explanation

Parasites can secrete molecules that directly manipulate the host's nervous system or physiology to increase parasite transmission. This behavioral modification is achieved through the mechanism of parasite manipulation, because it enhances the parasite's life cycle, therefore the altered behavior isn't due to immune activation or insect development, rather than normal host behavior.

• If a deep-sea hydrothermal vent community relies primarily on chemosynthesis, which consequence follows regarding energy production?
• Which outcome occurs when melanopsin-containing retinal ganglion cells are stimulated by light during daytime?
• If a signaling molecule permanently disrupted a nuclear hormone receptor's ability to dimerize, which consequence follows?
• A flowering plant provides carbohydrates to symbiotic fungi colonizing its roots. Which outcome is most likely to also occur, supporting the plant's growth in nutrient-poor soils?
• If a novel virus enters the body, which consequence follows from the activation of naïve B lymphocytes?
• If a virus infects a bacterial cell, which consequence follows due to the lytic cycle?