| Vorige onderwerp :: Volgende onderwerp |
Everley Hazlitt
Geregistreerd op: 23 Jun 2020
Berichten: 4
|
 Geplaatst: 23-06-2020 04:03:26 Onderwerp: puma australia |
 |
|
|
Our results showed that Iressa, an puma australia EGFR-targeted tyrosine kinase inhibitor, fails to disrupt the interaction between EGFR/EGFRvIII and PUMA, suggesting that this kinase-independent anti-apoptotic activity may be an important mechanism underlying the limited clinical efficacy demonstrated by EGFR-targeted therapy. These observations also suggest that a higher therapeutic efficacy may be achieved by targeting both kinase-dependent and -independent functions of EGFR. In support of this premise, our data showed that mimicking PUMA's proapoptotic activity using a Bcl-2/Bcl-xL inhibitor sensitized both EGFR- and EGFRvIII-expressing GBM cells to Iressa and that most GBM cell lines we analyzed expressed high levels of Bcl-2 and Bcl-xL.
ÿþWe used extensive camera-trap surveys to study interindividual interactions among individually recognizable jaguars ( Panthern onca ) and plain-colored pumas ( Puma concolor ). Timed location data from a network of 119 trap stations in the Cockscomb Basin of Belize provide the 1st evidence of interspecific avoidance calibrated against intraspecific puma shoes interactions among jaguars. Camera trapping has advantages over radiotelemetry in its potential to provide data on the complete array of individuals within the study area.
Apart from their overall spatial similarities, jaguars and pumas avoided using the same location at the same time. This interspecific segregation was detectable over and puma suede above the spatial and temporal segregation of individual jaguars.Usamos muestreos intensivos de cámaras-trampa para estudiar las interacciones inter-individuales entre individuos identificados de jaguar ( Panthera onca ) y puma ( Puma concolor ). Datos de ubicaciones temporales de una red de 119 estaciones de trampeo en la cuenca del Cockscomb en Belice proporcionó la primera evidencia de que ambas especies se evitan espacialmente, datos que fueron calibrados con la información de las interacciones intraespecíficas de los jaguares.
These generic patterns are not observed in all field studies. Ranges of males overlap for jaguars, pumas, and leopards in areas where densities of puma womens shoes females are high and ranges are overlapping ( Muckenhirn and Eisenberg 1973 ; Núñez et al. 2002 ). In this case, it seems likely that males as well as females are responding to clumped distributions of prey, and dominance hierarchies may be expressed in other ways than exclusive territories. If distribution patterns of males are dictated by the strategy that maximizes the number of mating opportunities for the dominant males ( Sandell 1989 ), subordinates may be more focused on finding food and consequently have similar land-tenure strategies as females.
These components of behavior were sampled more representatively than is possible with telemetry by using an array of more than 100 camera stations. Camera traps were placed on established and newly opened trails traversing the dense forest matrix. These trails are the major corridors of travel for both jaguars and pumas, and individuals present within the immediate area of a camera are reliably caught on camera ( Harmsen 2006 ; Maffei et al. 2004 ; Rabinowitz and Nottingham 1986 ). Additional high-density camera arrays sampling small areas (10 km 2 ) on and off trails showed that off-trail photographs of jaguars were accompanied in 95% of the instances by on-trail puma mens shoes photographs of the same individuals on the same day ( Harmsen 2006 ).
We were therefore able to use the time interval between individual captures at a camera location as an index of presence in an area, with longer intervals between recaptures of the same individual indicating that it had traveled farther away. This format permitted testing interspecific interactions of jaguars with pumas in relation to intraspecific interactions among individual jaguars. Interaction can be interpreted from a frequency distribution through time that is more regular than random, indicating mutual [img]http://www.simplypotterheads.com/images/lose/puma mens shoes-967raz.jpg[/img] avoidance, or more aggregated than random, indicating mutual attraction. |
|
| Terug naar boven |
|
|
|
Je mag geen nieuwe onderwerpen plaatsen in dit subforum
Je mag geen reacties plaatsen in dit subforum
Je mag je berichten niet bewerken in dit subforum
Je mag je berichten niet verwijderen in dit subforum
Je mag niet stemmen in polls in dit subforum
|
Wilt u geen reclame op dit forum en genieten van extra voordelen? Klik dan vlug hier voor meer informatie!
|
|
|
|
|
