To let contrasting that have prior to knowledge, i and additionally applied nonspatial bring-recapture remedies for guess mature jaguar density (select Appendix B getting tips and you may efficiency).
Quoting cub density and people framework
I estimated densities separately for men, reproductive ladies, and nonreproductive women. We tried to complement models directly to findings of cubs, but their sparse capture histories don’t offer adequate investigation having an optimum opportunities research. So you can guess cub density, we multiplied the reproductive people density from your best design by imply amount of cubs for each reproductive people. Such rates greet calculation from complete jaguar thickness and you may inhabitants build for men, nonreproductive women, reproductive ladies, and you can cubs.
Performance
Our very own total sampling efforts is several,302 digital camera pitfall-nights. I gotten 1465 captures, also 1369 with recognizable anybody (Desk step 1). Altogether, i known 42 jaguars, also 14 adult men, 14 mature females, and 14 cubs. Of your own fourteen photographed adult women, eight have been positively reproducing and you can photographed with cubs (Photo D1, D2). While we registered equivalent numbers of people, women, and you can cubs regarding the analysis urban area, this new simply take volume each and every group differed: 58% away from identified photographs have been the ones from guys (798 captures), 33% from identifiable captures was indeed that from ladies (452), and only 9% were the ones from cubs (119). Typically, guys was indeed grabbed 56 moments for each, female thirty two minutes, and cubs just 9 times. Reproductive female had a bit large total number out-of grabs than simply nonreproductive ladies (257 rather than 195, respectively) and higher average level americkГЅ zdarma online datovГЎnГ lokalit of catches for every single individual (38 versus twenty eight). Reproductive females have been more frequently grabbed alone (109 minutes) than simply followed by cubs (69 grabs) throughout known little ones reliance. Conversely, cubs had been recorded more frequently and their moms and dads (83 private captures) than just by yourself (36 grabs).
Density prices of adult jaguars
Of the 32 models analyzed with the secr package with sex/reproductive status and sessions as covariates, those which did not allow density to vary across sessions obtained the lowest AICc values. In contrast, models assuming density variation across sessions received less support (Tables 2, C1). The top secr model for adult jaguars included an effect of sex/female reproductive status on D, ? 0, and ? and between session variation in ? 0. All three parameters differed significantly between sex/reproductive status groups (Table 3). Baseline detection probability was lowest for reproductive females (0.04 on average), whereas nonreproductive females had the greatest baseline detectability (0.13 on average) and males intermediate (0.08 on average) to the two female reproductive classes. Males had the largest values of estimated movement distribution (? = 2.97 ± 0.09 km), while reproductive and nonreproductive females obtained smaller ? values (2.04 ± 0.11 and 2.32 ± 0.19 km, respectively). Estimated densities were higher for reproductive females and males (1.97 ± 0.33 and 1.62 ± 0.22 individuals/ 100 km 2 , respectively) than for nonreproductive females (0.85 ± 0.19 individuals/100 km 2 ). In total, the best model estimated 4.44 ± 1.16 adult jaguars/100 km 2 (Table 3).
Cub occurrence and you can jaguar society structure
Of findings of your own seven reproductive females having children in the data months, we projected 1.64 cubs per reproductive ladies an average of. In addition, you to cub was registered alone on one occasion along with an unknown mom. I excluded that it solitary observance regarding subsequent investigation. On the basis of reproductive ladies thickness regarding most useful design, we estimated step 3.23 cubs/a hundred km 2 on analysis town. For this reason, i estimated a complete density out of seven.67 jaguars/100 kilometres dos . Jaguar populace design was 21% adult males, 11% nonreproductive girls, 26% reproductive girls, and 42% cubs (Dining table step three).