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  • 1
    Electronic Resource
    Electronic Resource
    Trimedlure affects mating success and mate attraction in male Mediterranean fruit flies (1996)
    Springer
    Entomologia experimentalis et applicata 78 (1996), S. 181-185 
    Details
    ISSN: 1570-7458
    Keywords: Ceratitis capitata ; Diptera ; Tephritidae ; mating behavior ; parapheromone
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Male Mediterranean fruit flies, Ceratitis capitata (Wiedemann), are attracted to the synthetic compound trimedlure. Despite the common use of trimedlure in control programs, the underlying basis of male attraction remains unknown. In a series of laboratory trials, we compared the mating success of (treated) males exposed to trimedlure and (control) males not given access to trimedlure. When tested immediately after exposure, treated males mated more frequently than control males. This mating advantage was short-lived, however, and males tested as little as 24 h after exposure had no advantage over control males. When tested immediately after exposure, treated males exhibited higher levels of pheromone calling than control males. Consequently, more females were attracted to treated males than to control males in field tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00187515
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  • 2
    Electronic Resource
    Electronic Resource
    Intraspecific nest parasitism in the sand waspStictia heros (Fabr.) (Hymenoptera: Sphecidae) (1996)
    Springer
    Journal of insect behavior 9 (1996), S. 105-119 
    Details
    ISSN: 1572-8889
    Keywords: sand wasp ; nesting behavior ; parasitism ; Costa Rica
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two forms of intraspecific nest parasitism are described for the neotropical sand waspStictia heros (Fabr.). Females behaving aggressively made aerial attacks on prey-laden females as they approached their nest for provisioning. Attacks resulted in prolonged grappling on the sand, and the relative sizes of the contestants influenced final possession of the prey. Also, the probability that returning females were attacked was directly related to the size of the prey being delivered. Females displaying marauding behavior entered the nests of other females, removed prey, and deposited it in their own nest. Females usually raided nests that were near their own nest and tended to concentrate raiding attempts on nests that previously yielded prey. We also describe the behavior associated with the delivery of hunted prey and examine possible interrelationships between wasp size, prey size and hunting trip duration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02213726
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  • 3
    Electronic Resource
    Electronic Resource
    Male courtship success and female discrimination in the mediterranean fruit fly (Diptera: Tephritidae) (1994)
    Springer
    Journal of insect behavior 7 (1994), S. 159-170 
    Details
    ISSN: 1572-8889
    Keywords: mating behavior ; courtship ; lek ; Mediterranean fruit fly ; Ceratitis capitata
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The mating success of individually marked male Mediterranean fruit flies was monitored over 6 consecutive days in the laboratory. Mating frequency was nonrandom, as the numbers of both males that failed to mate and males that mated many (more than four) times were much higher than expected by chance alone. Differential mating success resulted in part from intermale variation in activity level. Male copulatory success was positively correlated with the numbers of courtships performed, attempted copulations (mountings), and females courted. Male-male aggression, on the other hand, and a negligible effect on male mating success. Female choice also appeared to influence male mating frequency. Fewer than 10% of courtships resulted in mating, and in most cases females terminated courtship by simply moving away from the male. Females that did mate generally selected males having higher copulatory scores than previously rejected males.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01990078
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  • 4
    Electronic Resource
    Electronic Resource
    Effects of female deprivation on mating propensity and mate selectivity by maleRequena verticalis (Orthoptera: Tettigoniidae) (1993)
    Springer
    Journal of insect behavior 6 (1993), S. 689-698 
    Details
    ISSN: 1572-8889
    Keywords: female deprivation ; mating propensity ; size selectivity ; Requena verticalis ; males
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract This study examined the effects of female deprivation on the mating propensity and size selectivity of male Requena verticalis,an Australian katydid in which males provide a large spermatophylax to females during mating. Specifically, I tested the hypotheses that mating readiness would increase, while mate discrimination would decrease (i. e., females would be accepted independently of their size, an indicator of fecundity) as the period of female deprivation increased. Fieldcaught males were held in isolation for 1, 5, or 14 days in the laboratory and then presented with virgin females. As expected, males held for 5 and 14 days were more likely to mate than males held only a single day. However, in none of the treatments did males discriminate among females on the basis of size. These results are compared with those obtained in a similar study on a zaprochiline katydid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01201670
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  • 5
    Electronic Resource
    Electronic Resource
    Lek behavior of the oriental fruit fly,Dacus dorsalis, in Hawaii (Diptera: Tephritidae) (1991)
    Springer
    Journal of insect behavior 4 (1991), S. 235-241 
    Details
    ISSN: 1572-8889
    Keywords: Dacus dorsalis ; lek ; reproductive behavior ; Hawaii
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01054615
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  • 6
    Electronic Resource
    Electronic Resource
    Comparative foraging behavior of Neotropical robber flies (Diptera: Asilidae) (1984)
    Springer
    Oecologia 62 (1984), S. 188-195 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Robber fly species within a Panamanian rain forest comprised distinct shade-seeking (SS) and light-seeking (LS) groups. Thoracic temperatures of LS species averaged 9.2°C greater than ambient, whereas those of SS species averaged only 1.3°C above ambient. Among SS species, attack rate decreased with increasing body mass, whereas relocation rate and attack and relocation distances increased with increasing body mass. Attack and relocation distances of LS species were similar to those of SS species of similar size. Large (〉100 mg) LS species, however, had much higher attack and relocation rates than large SS species. The potential costs and benefits of basking are briefly discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00379012
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  • 7
    Electronic Resource
    Electronic Resource
    Ecological comparisons of robber fly species (Diptera: Asilidae) coexisting in a neotropical forest (1985)
    Springer
    Oecologia 67 (1985), S. 57-70 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Data regarding seasonal abundance, microhabitat preference, and diet were collected over 3 field seasons for adults of 15 robber fly species on Barro Colorado Island, Panama. The species comprised 2 distinct “thermal guilds”; light-seeking (hereafter LS) species foraged in sunlit areas, while shade-seeking (SS) species foraged only in deep shade. All species were rare during the dry season. During the rainy months, most SS species had flight periods of 2–3 months, and no temporal segregation was apparent. In contrast, most LS species had flight periods of only 4–6 weeks, and a distinct sequence of occurrence was evident during 2 years of censusing. Most SS and LS species displayed a pronounced specificity for perches of a particular substrate type. However, the ranges of perching heights utilized varied considerably among species. Dietary comparisons revealed that mean and maximum prey sizes increased with increasing robber fly size, while minimum prey sizes were constant. Robber fly species 〈20 mg fed primarily upon nematocerous Diptera, whereas larger species generally fed upon a wide variety of prey types. For each thermal guild, the actual mean overlap for a particular niche dimension was compared to mean overlaps generated by randomly assigning species to thermal guilds. No significant differences from the random null hypothesis were found for the SS guild. However, niche complementarity between dietary and spatial overlaps and dietary overlap was apparent among the 5 large LS species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00378452
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  • 8
    Electronic Resource
    Electronic Resource
    Acquisition of Female-Attracting Fragrance by Males of Oriental Fruit Fly from a Hawaiian Lei Flower, Fagraea berteriana (1997)
    Springer
    Journal of chemical ecology 23 (1997), S. 2275-2285 
    Details
    ISSN: 1573-1561
    Keywords: Oriental fruit fly ; Bactrocera dorsalis ; Tephritidae ; Diptera ; Fagraea berteriana ; pheromone ; attractant ; 3,4-dimethoxycinnamyl alcohol ; coniferyl alcohol ; phenylpropanoid
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Males of the Oriental fruit fly, Bactrocera dorsalis, are strongly attracted to and compulsively feed on a fragrant lei flower, Fagraea berteriana. A series of phenylpropanoid components, trans-3,4-dimethoxycinnamyl alcohol, its acetate, and trans-3,4-dimethoxycinnamaldehyde were characterized as male attractants. The alcohol stimulated the same level of feeding activity as methyl eugenol. Males that fed on flowers selectively converted the attractant components into trans-coniferyl alcohol and stored it in rectal glands. Males scented with the phenylpropanoids were more successful in mating than unfed males, indicating the advantage of acquiring the fragrance in mating success.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/B:JOEC.0000006673.27221.2e
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  • 9
    Electronic Resource
    Electronic Resource
    Dominions and desert clickers (Orthoptera:Acrididae): influences of resources and male signaling on female settlement patterns (1991)
    Springer
    Behavioral ecology and sociobiology 28 (1991), S. 133-140 
    Details
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Previous field work on the grasshopper Ligurotettix coquilletti revealed that females were not evenly distributed among male mating territories, Larrea tridentata (creosote) bushes, but were clustered at particular locations. These sites generally harbored several signaling males simultaneously and also possessed foliage preferred by the insects as a food source, this preference being based on the relative concentrations of various extra-foliar compounds. The clustering of females, therefore, could result from a preference for specific bushes because of the resources (i.e., food) available there and/or an orientation to groups of males per se. Here, we present the results of 3 field experiments in which we controlled the spatial distribution and intensity of male signals using a computer-operated system of loudspeakers and monitored the movement of individually marked females released in the study area. When male song was identical at high and low quality territories (all having single loudspeakers), females still aggregated at the high quality sites, indicating that variability in host plant quality alone may be sufficient to promote a skewed distribution of females. Among high quality territories, females did not discriminate between sites with one versus three loudspeakers (all broadcasting the same signal), but displayed a strong preference for sites (all having single loudspeakers) with a high intensity signal over a low intensity one. Field measurements showed that the songs of grouped males were more intense than those of lone males, implying that the signaling of grouped males may have enhanced the settlement of females at the bushes harboring male groups above and beyond that influenced by territory quality alone. We conclude that female attraction to host plants is influenced primarily by male signaling, whereas their subsequent retention is more dependent on territory quality. An experiment on male settlement failed to show an aggregative tendency, suggesting that male groups form through the “passive” accumulation of individuals at high quality sites.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00180990
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  • 10
    Electronic Resource
    Electronic Resource
    Experimental manipulation of mate choice by male katydids: the effect of female encounter rate (1992)
    Springer
    Behavioral ecology and sociobiology 30 (1992), S. 277-282 
    Details
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary This study tests the general prediction that discrimination among potential mates increases with the availability of potential mates. Specifically, we conducted two experiments that examined mate choice by male zaprochiline katydids in relation to their prior encounter rate with females. The probability of mate acceptance or rejection was measured for males given either frequent or no contact with females in the laboratory (experiment 1) and males taken directly from natural areas of either high or low female abundance (experiment 2). In both experiments, males with low female encounter rates were more likely to mate than males with high female encounter rates. In both cases, the decreased mating probability of males in the high encounter treatment resulted from their tendency to reject lighter (and less fecund) females. Despite the presumed advantage to males of selecting heavier females, field data indicate that, unlike females, males do not aggregate in rich food patches. Possible explanations for this finding are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00166713
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