Gustation in insects: taste qualities and types of evidence used to show taste function of specific body parts

Journal of Insect Science, Год журнала: 2023, Номер 23(2)

Опубликована: Март 1, 2023

The insect equivalent of taste buds are gustatory sensilla, which have been found on mouthparts, pharynxes, antennae, legs, wings, and ovipositors. Most sensilla uniporous, but not all apparently uniporous gustatory. Among containing more than one neuron, a tubular body dendrite is also indicative sensillum, with the adding tactile function. But tactile. Additional morphological criteria often used to recognize if sensillum Further confirmation such by electrophysiological or behavioral evidence needed. five canonical qualities insects respond sweet, bitter, sour, salty, umami. tastants that easily fit in these qualities. Categories can be based only human perception, whether response deterrent appetitive chemical structure. Other compounds at least some include, limited to: water, fatty acids, metals, carbonation, RNA, ATP, pungent tastes as horseradish, bacterial lipopolysaccharides, contact pheromones. We propose that, for insects, defined nonvolatiles restricted responses are, thought be, mediated sensillum. This restriction useful because receptor proteins elsewhere.

Язык: Английский

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Selection for insecticide resistance can promote Plasmodium falciparum infection in Anopheles

PLoS Pathogens, Год журнала: 2023, Номер 19(6), С. e1011448 - e1011448

Опубликована: Июнь 20, 2023

Insecticide resistance is under strong selective pressure in Anopheles mosquitoes due to widespread usage of insecticides vector control strategies. Resistance mechanisms likely cause changes that profoundly affect mosquito physiology, yet it remains poorly understood how pressures imposed by may alter the ability host and transmit a Plasmodium infection. From pyrethroid-resistant field-derived gambiae s.l. mosquitoes, we established resistant (RES) susceptible (SUS) colonies either selection for, or loss insecticide resistance. We show increased oocyst intensity growth rate as well sporozoite prevalence RES compared SUS females infected with falciparum. The increase infection was not associated presence kdrL1014F mutation impacted inhibition Cytochrome P450s. lipid transporter lipophorin (Lp), which upregulated SUS, at least partly implicated P. falciparum but directly involved phenotype. Interestingly, observed although infections were affected when exposed permethrin, these had decreased abundance fat body following exposure, pointing possible role for mobilization response damage caused challenge. finding can intensities reinforces need assess overall impact on malaria transmission dynamics experience during repeated

Язык: Английский

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Integrating water balance mechanisms into predictions of insect responses to climate change

Journal of Experimental Biology, Год журнала: 2024, Номер 227(10)

Опубликована: Май 15, 2024

ABSTRACT Efficient water balance is key to insect success. However, the hygric environment changing with climate change; although there are compelling models of thermal vulnerability, often neglected in predictions. Insects survive desiccating conditions by reducing loss, increasing their total amount (and replenishing it) and tolerance dehydration. The physiology underlying these traits reasonably well understood, as sources variation phenotypic plasticity. intersect at high temperatures, such that mortality sometimes determined dehydration, rather than heat (especially during long exposures dry conditions). Furthermore, interact determine survival. In this Commentary, we propose identifying a threshold where cause shifts between dehydration temperature, it should be possible predict from trait measurements perhaps eventually priori physiological or -omic markers).

Язык: Английский

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The genomic and cellular basis of biosynthetic innovation in rove beetles

Cell, Год журнала: 2024, Номер 187(14), С. 3563 - 3584.e26

Опубликована: Июнь 17, 2024

Язык: Английский

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Regulation of insect cuticular hydrocarbon biosynthesis

Current Opinion in Insect Science, Год журнала: 2024, Номер 67, С. 101287 - 101287

Опубликована: Окт. 24, 2024

Язык: Английский

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