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Data from: Overexpression of an antioxidant enzyme improves male mating performance after stress in a lek-mating fruit fly
- 负责人：
- 关键词：
- Anastrepha suspensa
- DOI：
- doi:10.5061/dryad.nk58h0m
- 摘要：
- antioxidant activity in the Caribbean fruit fly, Anastrepha suspensa, a lek-mating species with elaborate sexual displays and intense sexual selection that is als
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.mnlu4p
- 摘要：
- . 2040 records from Perthshire Black Grouse Study Group (PBGSG) - Black Grouse annual lek counts in Perthshire 1990-2009 (Perthshire Black Grouse Study Gr
GBIF Occurrence Download
- 负责人：
- DOI：
- doi:10.15468/dl.qeytyt
- 摘要：
- Collection (OSUM). 3 records from University of Ghent - Zoology Museum - Vertebratacollectie. 210 records from RSPB - Black grouse lek survey in the Scottish
Data from: The potential importance of unburned islands as refugia for the persistence of wildlife species in fire-prone ecosystems
- 负责人：
- DOI：
- doi:10.5061/dryad.30jh437
- 摘要：
- The persistence of wildlife species in fire-prone ecosystems is under increasing pressure from global change, including alterations in fire regimes caused by climate change. However, unburned islands might act to mitigate negative effects of fire on wildlife populations by providing habitat in which species can survive and recolonize burned areas. Nevertheless, the characteristics of unburned islands and their role as potential refugia for the post-fire population dynamics of wildlife species remain poorly understood. We used a newly developed unburned island database of the north-western United States from 1984–2014 to assess the post-fire response of the greater sage-grouse (Centrocercus urophasianus), a large gallinaceous bird inhabiting the sagebrush ecosystems of North America, in which wildfires are common. Specifically, we tested whether pre- and post-fire male attendance trends at mating locations (leks) differed between burned and unburned areas, and to what extent post-fire habitat composition at multiple scales could explain such trends. Using time-series of male counts at leks together with spatially-explicit fire history information, we modelled whether male attendance was negatively affected by fire events. Results revealed that burned leks often exhibit sustained decline in male attendance, whereas leks within unburned islands or >1.5 km away from fire perimeters tend to show stable or increasing trends. Analyses of post-fire habitat composition further revealed that sagebrush vegetation height within 0.8 km around leks, as well elevation within 0.8km, 6.4km, and 18 km around leks, had a positive effect on male attendance trends. Moreover, the proportion of the landscape with cheatgrass (Bromus tectorum) cover >8% had negative effects on male attendance trends within 0.8 km, 6.4 km, and 18 km of leks, respectively. Our results indicate that maintaining areas of unburned vegetation within and outside fire perimeters may be crucial for sustaining sage-grouse populations following wildfire, and requires more attention in wildlife management.
Data from: Simultaneous age-dependent and age-independent sexual selection in the lekking black grouse (Lyrurus tetrix)
- 负责人：
- DOI：
- doi:10.5061/dryad.2jj6q
- 摘要：
- – the black grouse Lyrurus tetrix – we quantified the effects of age, life span and age of first lek attendance (AFL) on male annual mating success (AMS) to separate
Data from: Female mate fidelity in a lek mating system and its implications for the evolution of cooperative lekking behavior
- 负责人：
- 关键词：
- Lekking;Selection: sexual;Behavior: social;Chiroxiphia lanceolata;Mate choice;Behavior: evolution
- DOI：
- doi:10.5061/dryad.vb808
- 摘要：
- The extent and importance of female mate fidelity in polygynous mating systems are poorly known. Fidelity may contribute to high variance in male reproductive success when it favors attractive mates or may stabilize social interactions if females are faithful to mating sites rather than males. Using 12 years of data on genetic mate choice in the cooperatively lekking lance-tailed manakin (Chiroxiphia lanceolata), I investigated the frequency of fidelity within and between years, whether females were faithful to individual males or to mating sites across years, and whether fidelity favored attractive males. Mate fidelity occurred in 41.7% of 120 between-year comparisons and was observed for 41.1% of 73 individual females that had the opportunity to mate faithfully. Females were not more likely to mate at prior mating sites when previous mates were replaced. Faithful females mated with the same male in up to four consecutive years but were not disproportionately faithful to attractive partners. Mating history influences current mate choice, and fidelity in this lekking system apparently represents active mate choice by females but little consensus in mate choices among faithful females. This study underscores the prevalence of mate fidelity in polygynous mating systems and emphasizes the need to consider the larger context of lifetime reproductive behavior when interpreting patterns of female choice.
Data from: Evolutionary divergence in competitive mating success through female mating bias for good genes
- 负责人：
- DOI：
- doi:10.5061/dryad.101kt28
- 摘要：
- with the lek paradox in showing no genetic variation available to choosy females, and therefore no genetic benefits of choice. We used the preferences
Data from: Male spacing and female choice in a fiddler crab
- 负责人：
- Perez, Daniela
- DOI：
- doi:10.5061/dryad.2n3f998
- 摘要：
- The aggregation of courting males is widespread among animal taxa, yet we do not understand why males congregate and therefore intensify local competition for female attention. The most commonly invoked theoretical explanation is that females preferentially approach clustered males due to the many benefits they would gain, and clustered males would therefore have higher mating success. However, although theoretical explanations of aggregation formation are well-advanced, empirical studies are scarce, especially in invertebrates. In fact, there is little evidence that females do prefer to approach clustered over spaced displayers. Here we address this question by using robotic crabs to test female preferences in fiddler crabs (a visually displaying species) and show that female do not preferentially approach clustered males. We suggest that if this pattern is more widespread, the most commonly invoked explanation of courting aggregations is of limited use. We offer explanations for the strong clustering behaviour we observe in this species and discuss the implications of this finding for the theoretical underpinnings of this research field.
Data from: Variation in adult sex ratio alters the association between courtship, mating frequency and paternity in the lek-forming fruitfly
- 负责人：
- DOI：
- doi:10.5061/dryad.dn5sf
- 摘要：
- The intensity with which males deliver courtship and the frequency with which they mate are key components of male reproductive success. However, we expect the strength of the relationship between these traits and a male’s overall paternity to be strongly context dependent, e.g. to be altered significantly by the extent of post-mating competition. We tested this prediction in a lekking insect, Ceratitis capitata (medfly). We examined the effect of manipulating the sex ratio from male- to female-biased (high and low male competition, respectively) on courtship behaviour, mating frequency and paternity of focal males. Under high male competition, focal males delivered significantly more courtship but gained lower paternity than under lower competition. Paternity was positively associated with mating frequency and small residual testes size. However, the association between mating frequency and paternity was significantly stronger under low competition. We conclude that manipulation of sex ratio significantly altered the predictors of mating success and paternity. The relationship between pre- and post-mating success is therefore plastic and alters according to the prevailing level of competition. The results highlight the importance of post-copulatory processes in lekking species and illuminate selection pressures placed on insects such as medflies that are mass reared for pest control.
Data from: Competition for access to mates predicts female-specific ornamentation and male investment in relative testis size
- 负责人：
- DOI：
- doi:10.5061/dryad.v9s4mw6s5
- 摘要：
- a comparative analysis of Empidinae dance fly taxa that display female-specific ornaments. We show that species with more female-biased operational sex ratios in lek-li
