Effects of cobalt and manganese on the calcium-action potentials in larval insect muscle fibres (Ephestia kühniella)

The Impact of Environmental Mn Exposure on Insect Biology

“…For example, some of the early laboratory studies of insect muscle physiology revealed that the membrane of these cells is highly permeable to Mn 2+ and other divalent metal cations, possibly via the action of Ca 2+ channels ( Fukuda and Kawa, 1977 ). Specifically, several studies demonstrated that increased levels of Mn 2+ in the extracellular bath significantly reduced the excitability and contractility of visceral muscles in diverse insect species ( Deitmer, 1977 ; Cook and Mark Holman, 1979 ). However, whether under natural conditions, environmental exposure to Mn negatively affects the fitness of individual insects via its impact on muscle physiology and associated flight-related behaviors remains mostly unexplored.…”

The Impact of Environmental Mn Exposure on Insect Biology

“…For example, some of the early laboratory studies of insect muscle physiology revealed that the membrane of these cells is highly permeable to Mn 2+ and other divalent metal cations, possibly via the action of Ca 2+ channels ( Fukuda and Kawa, 1977 ). Specifically, several studies demonstrated that increased levels of Mn 2+ in the extracellular bath significantly reduced the excitability and contractility of visceral muscles in diverse insect species ( Deitmer, 1977 ; Cook and Mark Holman, 1979 ). However, whether under natural conditions, environmental exposure to Mn negatively affects the fitness of individual insects via its impact on muscle physiology and associated flight-related behaviors remains mostly unexplored.…”

The Impact of Environmental Mn Exposure on Insect Biology

“…For example, some of the early laboratory studies of insect muscle physiology revealed that the membrane of these cells is highly permeable to Mn 2+ and other divalent metal cations, possibly via the action of Ca 2+ channels ( Fukuda and Kawa, 1977 ). Specifically, several studies demonstrated that increased levels of Mn 2+ in the extracellular bath significantly reduced the excitability and contractility of visceral muscles in diverse insect species ( Deitmer, 1977 ; Cook and Mark Holman, 1979 ). However, whether under natural conditions, environmental exposure to Mn negatively affects the fitness of individual insects via its impact on muscle physiology and associated flight-related behaviors remains mostly unexplored.…”

The Impact of Environmental Mn Exposure on Insect Biology

“…For example, some of the early laboratory studies of insect muscle physiology revealed that the membrane of these cells is highly permeable to Mn 2+ and other divalent metal cations, possibly via the action of Ca 2+ channels ( Fukuda and Kawa, 1977 ). Specifically, several studies demonstrated that increased levels of Mn 2+ in the extracellular bath significantly reduced the excitability and contractility of visceral muscles in diverse insect species ( Deitmer, 1977 ; Cook and Mark Holman, 1979 ). However, whether under natural conditions, environmental exposure to Mn negatively affects the fitness of individual insects via its impact on muscle physiology and associated flight-related behaviors remains mostly unexplored.…”