Digital camera capturing and you can identification numbers for sex/age groups
To allow comparisons with before studies, i as well as used nonspatial simply take-recapture answers to imagine adult jaguar density (find Appendix B to have methods and abilities).
Quoting cub thickness and people construction
I projected densities alone for men, reproductive lady, and you may nonreproductive ladies. We tried to fit designs straight to findings out of cubs, but their sparse grab records failed to provide enough analysis to have a max possibilities analysis. To guess cub occurrence, we increased this new reproductive females occurrence from our most readily useful model of the suggest amount of cubs for every single reproductive lady. These types of quotes enjoy computation away from complete jaguar occurrence and you may society design for men, nonreproductive female, reproductive females, and cubs.
Our full sampling effort was several,302 digital camera pitfall-nights. We received 1465 captures, and 1369 having recognizable anyone (Desk 1). As a whole, i understood 42 jaguars, including fourteen males, fourteen adult ladies, and fourteen cubs. Of the fourteen snap mature female, eight was positively recreating and you may shoot that have cubs (Pictures D1, D2). While we inserted equal quantities of guys free austrian dating sites, lady, and you can cubs regarding the analysis city, the just take regularity of each classification differed: 58% regarding identified photographs was basically the ones from men (798 catches), 33% away from identifiable grabs was that from ladies (452), and simply nine% had been the ones from cubs (119). An average of, people was basically captured 56 minutes per, people 32 minutes, and you will cubs only nine minutes. Reproductive girls had somewhat highest final amount from catches than just nonreproductive female (257 instead of 195, respectively) and better mediocre amount of grabs for each individual (38 in the place of 28). Reproductive people had been more frequently caught by yourself (109 minutes) than simply followed closely by cubs (69 catches) during the period of known girls and boys reliance. Alternatively, cubs was indeed registered with greater regularity the help of its moms and dads (83 individual catches) than simply by yourself (thirty six catches).
Thickness prices out-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 density and jaguar society design
Off findings of the 7 reproductive lady having young ones during the studies months, we projected step 1.64 cubs for every reproductive girls normally. In addition, one to cub is actually filed alone on a single affair and had an unknown mommy. I excluded so it lone observation off next data. On the basis of reproductive females thickness in the greatest model, we projected step three.23 cubs/100 km 2 about investigation town. Thus, i projected a whole thickness away from seven.67 jaguars/100 km dos . Jaguar inhabitants framework are 21% adult men, 11% nonreproductive lady, 26% reproductive people, and you can 42% cubs (Table step 3).