To let contrasting which have prior to education, we as well as applied nonspatial capture-recapture approaches to imagine adult jaguar density (discover Appendix B for tips and you may performance).
Estimating cub density and you may people construction
I projected densities independently for men, reproductive women, and nonreproductive female. We attempted to match activities to findings from cubs, however their sparse need histories failed to offer sufficient study to own a max possibilities investigation. In order to estimate cub density, we multiplied the latest reproductive people thickness from our most useful design because of the mean level of cubs per reproductive females. These estimates invited computation of total jaguar thickness and you may society structure for men, nonreproductive people, reproductive girls, and cubs.
Overall performance
The complete testing effort is actually 12,302 camera pitfall-evening. We obtained 1465 catches, and 1369 which have recognizable someone (Table 1). As a whole, we recognized 42 jaguars, together with 14 men, 14 adult females, and you may 14 cubs. Of the 14 photographed mature females, 7 was positively reproducing and you can shoot which have cubs (Pictures D1, D2). Although we registered equal numbers of males, females, and you will cubs on the data city, the new simply take frequency each and every group differed: 58% out of understood photographs was indeed the ones from people (798 captures), 33% off identifiable captures was in fact that from women (452), and simply 9% was basically the ones from cubs (119). Typically, boys was basically captured 56 moments for every, girls thirty two moments, and you can cubs simply nine moments. Reproductive females had somewhat large total number away from captures than just nonreproductive female (257 in place of 195, respectively) and better mediocre level of grabs per individual (38 rather than twenty eight). Reproductive people have been more often captured alone (109 moments) than simply with cubs (69 grabs) over the course of understood kids reliance. However, cubs was in fact filed more often with regards to parents (83 individual grabs) than simply by yourself (thirty-six captures).
Thickness prices out of adult jaguars
Of the 32 models analyzed with the secr https://datingmentor.org/escort/atlanta/ 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 jaguar populace structure
Regarding findings of one’s 7 reproductive women which have youngsters when you look at the analysis period, we projected 1.64 cubs each reproductive lady normally. As well, that cub is actually filed by yourself on a single affair together with an unknown mother. We excluded so it solitary observation away from subsequent investigation. On such basis as reproductive lady thickness regarding greatest model, we estimated step 3.23 cubs/100 km dos in the analysis city. For this reason, we projected an entire thickness from seven.67 jaguars/100 kilometres dos . Jaguar inhabitants design was 21% males, 11% nonreproductive female, 26% reproductive girls, and you will 42% cubs (Dining table step three).