Modern Weights and Measurements of Jaguars

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#157

04-11-2020, 11:41 PM

As I promised Its finally here the study on the average size on cerrado male jags compared to cerrado male puma.

Credits: Pró Carnivoros

https://www.yumpu.com/pt/document/read/13054693/ecologia-comparada-e-conservacao-da-onca-pintada-pro-carnivoros

                                 COVER
COMPARED ECOLOGY CONSERVATION OF THE ONÇA-PINTADA ( Panthera Onca ) AND PUMA ( Puma-Concolor ) IN THE CERRADO AND PANTANAL.

LEANDRO SILVEIRA

      Guidance. Prof. Dr. Jader Marinho Filho

THESIS PRESENTED TO THE POST-GRADUATE PROGRAM IN ANIMAL BIOLOGY AT UNIVERSITY OF BRASÍLIA ( BRAZIL ) AS PART OF THE REQUIREMENTS FOR OBTAINING PhD IN ANIMAL BIOLOGY.

                         BRASÍLIA D.F
                       JANUARY 2004


UNVEILING The Cerrado male Jaguar's average weight/size.

     Average Cerrado male jaguar in comparison to average Cerrado male Puma.

Before talking about the average size of a Cerrado male Jag and Puma, let's first see the size of its preys in comparison to the cerrado male Puma's preys as well.

obtained by summing the products of individual items of prey with their weight, transforming in logarithmic scale ( Log-N ), divided by the total number of prey used in the analysis ( Iruate et al., 1990 ). for the peccaries species ( Tayassu pecari ) were considered different weight measures when treated for the cerrado jaguar and puma, assuming that the former species most commonly predate adult individuals ( 40kg ) and the latter, young individuals ( 5-25kg ).

Collection of analyses of carcasses of prey slaughtered by Jags-Pumas.

carcasses of prey slaughtered by the cerrado jaguar and puma were located in the field during the monitoring of radio collared animals. usually clusters of vultures served as an indication of recently slaughtered animals. For the identification of the predator, tracks were sought in the environment, since the format and measures are different for each species ( Aranda 1994 ). when not found, the carcass was analyzed for evidence characteristic of each predator. for example: jaguars can kill animals the size of an adult tapir ( 300kg ) in addition to anteaters and peccaries. The site of the fatal bite is usually concentrated in the upper region of the neck, the average distance between the canine marks on the bones is 37 mm and they usually starts the consumption of the carcass by the pectoral region, jags do not cover the carcass however they can drag it up to 1000 meters ( Crashaw & Quigley, 2002, personal observation ). On the other hand evidences of predation by pumas are characterized by the slaughter of medium sized animals such as peccary ( Pecari tajacu ), armadillos and terrestrial birds such as rheas and tinamids, the fatal bite is generally concentrated in the lower part of the neck. Pumas start the consumption of the carcass by the abdominal region, the average distance between the canine marks in the bones is 26 mm, they have the behavior of covering the carcass with foliage and sticks

For analysis of regurgitated cerrado jaguars collected, the samples were taken inside a sieve under running water. subsequently their content (usually hair and bones) was identified through a reference collection. this sample category (regurgitated) was analyzed together with the carcass category, since it necessarily corresponds to a single meal.

RESULTS

Characterization of the Species Cerrado Jaguar and Puma
Of the four cerrado jaguar individuals captured in Emas National Park (PNE), two were male allowing comparison of animal weights from other locations (table 1). In relation to jaguars both considering the average weight of males and females together, and considering the average weight of males, the animals from the PNE stand out as the largest.

Male Pumas represent approximately 60% of the weight of male jaguars and differ significantly for three measurements: weight, head-body length and thorax circumference.

Seven pumas ( four males and three females ) were captured in the region of the emus park and their average weights are in table 2. Adult puma females in the ENP have a weight corresponding to approximately 57.5% of the weight of adult males of the same species.

TABLE 1 - heres the table comparison of both cats with the cerrado male jaguar on his AVERAGE SIZE/WEIGHT, The puma isnt on his average here. ( Page 44 of the link )

C.Jaguar = Cerrado jaguar
C.Puma = Cerrado Puma
SD = Standard Deviation
N= Number of sampled individuals
LBD= Lengh Head Body
TL=   Tail lengh
He= Height
TG= Thorax Girth


                          C.Puma           SD              N             C.Jaguar              SD           N
Weight(kg)       43,93              13,23           7               87,50                3,53        2
LHB (cm)          114,28             7,82            7              138,50              6,36         2
TL (cm)              67,85               8,21           7               69,00               7,07         2
He (cm)             62,67               5,12           6              73,00                 5,65         2
TG (cm)             60,21              9,18          7               82,00                4,24         2

TABLE 2 - Differences between the average weights and their respective Standard Deviations ( SD ) between cerrado male jaguars and cerrado male pumas in the Parque Nacional das Emas - Cerrado. Male Puma is on his average weight now. ( Page 44 of the link )

C.Puma             N           SD             C.Jaguar             N               SD             t                 gl              P
53,500 (kg)       4      4,435        87,500 (kg)         2             3,536       10,175      2,6        <0,003

TABLE 3 - In this table there's the measuments of the trails (cm) of both cats in the Parque Nacional das Emas - Cerrado. ( Page 45 of the link )

L= Lengh
W= Width
FP= Front Paw
HP= Hind Paw
N= Number of sampled individuals
Pad
Toe
Pace

                       C.Puma            SD               N              C.Jaguar              SD             N
HP.L                 7,536             1,08            25                9,739            0,923           23
HP.W                6,628             0,879         25                8,647             0,696           23
HP.Pad.L         3,473              0,528          25                4,973            0,515            23
HP.Pad.W          4,222          0,554            25                6,22               0,466           22
HP.Toe.L           2,565           0,38              24               3,153             0,259            19
HP.Toe.W         1,617          0,309             24               3,229             5,156           19
FP.L                   7,182        0,575             21              9,937          0,953            20
FP.W                 7,148         0,932           21              10,333             0,898           20
FP.Pad.L           3,495         0,424             21               5,57                0,58              20
FP.Pad.W         4,488         0,597             21             7,124              0,719          20
FP.Toe.L           2,435         0,27               20              2,978               0,252           16
FP.Toe.W         1,58            0,235            20              2,253                0,253          16
Pace                43,875       3,119               4              53,667             9,997            9

Peter Crawshaw, Leandro and his biologist wife Anah collaring a Puma in 1994.