To let contrasting that have before education, we including used nonspatial simply take-recapture methods to guess adult jaguar thickness (look for Appendix B having steps and results).
Estimating cub density and you can society framework
We estimated densities separately for males, reproductive women, and you may nonreproductive people. I attempted to match activities right to findings out of cubs, but their simple grab records didn’t bring adequate data to own an optimum possibilities study. So you’re able to guess cub thickness, we multiplied the newest reproductive ladies thickness from our better model by the imply level of cubs each reproductive females. This type of estimates desired computation out of complete jaguar occurrence and population structure for males, nonreproductive ladies, reproductive women, and you can cubs.
Efficiency
Our very own full testing energy are twelve,302 cam pitfall-evening. I obtained 1465 captures, as well as 1369 that have recognizable anyone (Dining table 1). In total, i known 42 jaguars, and fourteen males, fourteen adult lady, and you may 14 cubs. Of one’s 14 photographed mature people, 7 have been earnestly recreating and you can shoot that have cubs (Images D1, D2). Although we inserted equivalent numbers of people, female, and you may cubs on investigation town, the brand new simply take frequency of any classification differed: 58% away from identified photos had been those of males (798 grabs), 33% out of recognizable captures had been the ones from women (452), and just 9% have been those of cubs (119). On average, guys were grabbed 56 times each, female thirty-two moments, and you may cubs just nine moments. Reproductive ladies got quite large final amount out of catches than nonreproductive female (257 as opposed to 195, respectively) and better mediocre quantity of catches per personal (38 as opposed to twenty eight). Reproductive ladies was indeed with greater regularity caught by yourself (109 times) than simply followed closely by cubs (69 captures) over the course of known kids dependency. However, cubs have been recorded more often with regards to moms and dads (83 individual catches) than alone (thirty-six catches).
Density rates regarding 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 sri lanka women looking for marriage? 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 inhabitants design
Of findings of your own 7 reproductive girls having girls and boys inside study several months, we estimated 1.64 cubs for every single reproductive females on average. Simultaneously, that cub is submitted alone on one occasion together with a not known mother. We omitted which lone observation out of subsequent analysis. On the basis of reproductive females occurrence regarding the most readily useful model, i projected step three.23 cubs/100 kilometer dos regarding investigation city. For this reason, i estimated a complete density of seven.67 jaguars/a hundred km dos . Jaguar society construction are 21% men, 11% nonreproductive women, 26% reproductive females, and you may 42% cubs (Table step 3).