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Search: authors:"Xu Zhang"

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Individual Recognition and Odor in Rat-Like Hamsters: Behavioral Responses and Chemical Properties

Individual recognition has been studied across a number of taxa and modalities; however, few attempts have been made to combine chemical and biological approaches and arrive at a more complete understanding of the use of secretions as signals. We combined behavioral habituation experiments with gas chromatography–mass spectrometry of glandular secretions from the left and right...

Urine-Derived Key Volatiles May Signal Genetic Relatedness in Male Rats

Olfactory cues play a vital role in kin recognition and mate choice of the rat. Here, using 2 inbred strains of rats, Brown Norway (BN) and Lewis, as models to simulate kinship via genetic distance, we examined whether urine-derived volatiles are genetically determined, and, if so, how they code for olfactory information and the degree of genetic relatedness in mate choice...

Foxn1 Gene Knockout Suppresses Sexual Attractiveness and Pheromonal Components of Male Urine in Inbred Mice

The immunocompetence handicap hypothesis (ICHH) posits that females prefer signals emitted by immunocompetent males over immunocompromised males and that these signals are honest. However, mechanisms of mate choice under an ICHH model may be impacted by levels of genetic variation (inbred animals vs. outbred animals). Here, we conducted 2-choice female preference experiments and...

Uropygial Gland-Secreted Alkanols Contribute to Olfactory Sex Signals in Budgerigars

The possible role of uropygial gland-secreted compounds in olfactory discrimination of sex or sex attractants in the budgerigar, Melopsittacus undulatus, was investigated using behavioral 2-choice tests and gas chromatography–mass spectrometry analysis. Our data showed that female budgerigars were capable of distinguishing males from females in a Y maze via body odor, indicating...

Sex- and Gonad-Affecting Scent Compounds and 3 Male Pheromones in the Rat

This study was aimed at identifying sex pheromones of the rat (Rattus norvegicus). We characterized the volatiles and semivolatiles of rat preputial gland and voided urine by using gas chromatography–mass spectrometry (GC–MS) and quantified them by their GC areas (abundances) and percentage of GC areas (relative abundances). Although all the compounds other than 4-heptanone and...

Putative Chemical Signals about Sex, Individuality, and Genetic Background in the Preputial Gland and Urine of the House Mouse (Mus musculus)

To explore whether preputial gland secretions and/or urine from the house mouse (Mus musculus) can be used for coding information about sex, individuality, and/or the genetic background of strain [ICR/albino, Kunming (KM), and C57BL/6], we compared the volatile compositions of mouse preputial glands and urine using a combination of dichloromethane extraction and gas...

Possible Coding for Recognition of Sexes, Individuals and Species in Anal Gland Volatiles of Mustela eversmanni and M. sibirica

With a combination of solvent extraction and gas chromatography—mass spectrometry, we found eight new compounds in the two sympatric Mustela species, M. eversmanni and M. sibirica. These compounds had not been detected by headspace sampling with solvent desorption. Two of the newly detected compounds are nitrogen-containing compounds, indole and o-aminoacetophenone and the...