0000000000370558
AUTHOR
Claude Everaerts
Multisensory perception of dietary faty-acids in Drosophila.
International audience; Fatty-acids (FAs) are crucial for animal survival and reproduction. However, our knowledge of the mechanisms underlying the perception and preference of dietary FA is limited, particularly in invertebrates. We obtained behavioral data with wild-type Drosophila melanogaster larvae and adults showing a clear preference to some of the FAs tested (C14:0, C16:0, C18:0, C18:1, C18:2, C18:3). These data, based on tests involving both individuals and groups, showed that larvae prefer desaturated FAs whereas adults prefer saturated FAs. Moreover, we found that larval and adult responses relied on olfaction and taste modalities, and maybe also on mechanoperception [1]. We will…
The chemical ecology of the Pacific beetle cockroach, Diploptera punctata
The cockroach, Diploptera punctata, has a wide geographic distribution throughout much of Asia and Hawaii, and as is one of the few vivaparous insect species know, it has been extensively studied by to gain insight into the underlying physiology of this unusual form of reproduction. However, there is not a great deal known about the mating behaviour of this species. We will present results, using populations from Hawaii and Thailand, showing that (i) there is very little interbreeding between the two populations, (ii) short distance pheromones are involved in mating, (iii) there are marked intersexual and inter-race differences in the cuticular profiles (iv) cuticular profiles change with a…
Discrimination of C18 fatty acids by Drosophila melanogaster larvae and adults (wild-type strain, Dijon 2000)
International audience
Intra- and intergenerational exposition to dietary fatty-acids affects behavior and fitness in D. melanogaster
Intra- and intergenerational exposition to dietary fatty-acids affects behavior and fitness in D. melanogaster. ESITO 13. meeting
Defensive secretion of Therea petiveriana: chemical identification and evidence of an alarm function
0098-0331 (Print) Journal Article; The volatile constituents of the supposed defensive secretions of the glandular pouches of the adults of both sexes of the cockroach Therea petiveriana have been shown to contain N-3-methylbutylacetamide (MBA) and N-3-methylbutylpropanamide (MBP), which represented 60% of the volatile fraction. The other 40% included acidic, aromatic, and aldehydic compounds. Behavioral experiments demonstrated that the secretion acts as an alarm pheromone for adults.
Ultrastructure of posterior sternal glands of Macrotermes annandalei (Silvestri): new members of the sexual glandular set found in termites (Insecta)
0362-2525 (Print) Comparative Study Journal Article; In female alates of Macrotermes annandalei, two types of abdominal glands are involved in the secretion of sex pheromone. Tergal glands are found at the anterior margin of tergites 6-10 and posterior sternal glands (PSGs) are located at the anterior margin of sternites 6-7. The cytological features of both types of glands are quite similar. The fine structural organization of PSGs is studied more precisely and described for the first time. The glandular cuticle is pitted with narrow apertures corresponding to the openings of numerous subcuticular pouches. Several Class 3 glandular units open in each pouch. One canal cell and one secretory…
Saturated and unsaturated fatty acids: behavioural responses and plasticity fatty acids as relevant stimuli in Drosophila?
Saturated and unsaturated fatty acids: behavioural responses and plasticity fatty acids as relevant stimuli in [i]Drosophila[/i]?. 13. rencontre du club de neurobiologie des invertébrés