Camera capturing and you may recognition amounts to own sex/age groups

To let contrasting with before degree, i along with used nonspatial simply take-recapture remedies for guess adult jaguar thickness (come across Appendix B to own tips and overall performance).

Quoting cub occurrence and you may inhabitants structure

I projected densities by themselves for males, reproductive females, and you will nonreproductive females. We made an effort to complement habits straight to findings off cubs, however their sparse grab histories did not give enough data for an optimum probability investigation. To estimate cub density, i multiplied new reproductive girls occurrence from our best design from the indicate number of cubs per reproductive females. These rates anticipate formula out of complete jaguar density and you will inhabitants construction for men, nonreproductive lady, reproductive people, and you will cubs.


Our complete sampling effort was a dozen,302 digital camera pitfall-nights. We acquired 1465 catches, together with 1369 which have identifiable anybody (Dining table step one). Altogether, we identified 42 jaguars, also fourteen adult males, 14 mature women, and fourteen cubs. Of your own fourteen shoot mature women, eight was in fact definitely reproducing and you may photographed having cubs (Photos D1, D2). While we entered equal variety of people, people, and you may cubs throughout the investigation city, the newest grab regularity of every group differed: 58% out of identified photographs were that from people (798 catches), 33% out-of recognizable catches was the ones from ladies (452), and simply 9% was in fact the ones from cubs (119). An average of, guys was indeed caught 56 minutes for every single, girls thirty two moments, and you can cubs merely nine times. Reproductive girls got somewhat highest final amount regarding catches than nonreproductive women (257 as opposed to 195, respectively) and better mediocre number of grabs for each and every personal (38 rather than twenty-eight). Reproductive female have been with greater regularity seized by yourself (109 moments) than just accompanied by cubs (69 captures) throughout known little ones dependency. Having said that, cubs was submitted more often due to their parents (83 individual grabs) than simply by yourself (thirty-six captures).

Density quotes regarding mature 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 thickness and you can jaguar society build

From findings of your eight reproductive female having little ones for the research period, i estimated step one.64 cubs each reproductive women an average of. Concurrently, that cub are filed by yourself on a single occasion along with an unknown mommy. We omitted so it lone observation regarding next analysis. On the basis of reproductive women density regarding the top design, we estimated step 3.23 cubs/100 km 2 from the investigation city. Ergo, we projected an entire thickness out of eight.67 jaguars/100 km 2 . Jaguar society construction try 21% adult males, 11% nonreproductive women, 26% reproductive girls, and you will 42% cubs (Dining table 3).

Leave a Reply