To allow reviews which have earlier knowledge, we as well as applied nonspatial capture-recapture remedies for guess mature jaguar thickness (see Appendix B having tips and you can abilities).
Quoting cub density and you will inhabitants framework
I projected densities individually for men, reproductive ladies, and you can nonreproductive ladies. We made an effort to complement patterns directly to findings from cubs, however their simple need records failed to promote sufficient research to possess a max likelihood studies. In order to guess cub thickness, i multiplied brand new reproductive women density from our greatest model by indicate amount of cubs for each reproductive people. These rates acceptance computation out-of total jaguar thickness and populace construction for males, nonreproductive lady, reproductive lady, and you can cubs.
Results
Our very own overall sampling work is 12,302 digital camera pitfall-night. We acquired 1465 captures, together with 1369 with identifiable someone (Desk 1). In total, we understood 42 jaguars, as well as 14 adult men, 14 adult lady, and fourteen cubs https://datingmentor.org/american-chat-rooms/. Of your 14 snap mature female, 7 was definitely recreating and snap having cubs (Photos D1, D2). While we registered equal amounts of boys, females, and you will cubs in the study urban area, the latest get volume of any category differed: 58% of understood photographs was in fact that from boys (798 captures), 33% away from identifiable captures was in fact those of female (452), and just nine% was indeed the ones from cubs (119). Typically, people was in fact grabbed 56 minutes for every, female thirty two times, and you may cubs only nine minutes. Reproductive lady had somewhat high total number out-of grabs than nonreproductive ladies (257 rather than 195, respectively) and higher average quantity of grabs for each personal (38 in place of 28). Reproductive female was in fact more frequently caught by yourself (109 minutes) than with cubs (69 captures) throughout identified youngsters dependence. On the other hand, cubs was indeed submitted more frequently along with their moms and dads (83 individual grabs) than by yourself (36 grabs).
Thickness estimates 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 ? 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 may jaguar population build
Out of observations of your own eight reproductive people that have young ones for the investigation months, we projected 1.64 cubs for each reproductive females typically. In addition, you to definitely cub try registered alone on one occasion and had a not known mom. I omitted this solitary observance out of subsequent study. On the basis of reproductive women density regarding the greatest design, we estimated step 3.23 cubs/100 kilometres 2 regarding study city. Hence, i projected a complete thickness off seven.67 jaguars/a hundred kilometer 2 . Jaguar populace framework is 21% men, 11% nonreproductive girls, 26% reproductive ladies, and you may 42% cubs (Dining table step three).