Microporous and mesoporous materials journal

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But this was the dry season, and Greg exhibited ibuphil signs of musth. At the water hole, Kevin swaggered up for a drink. The other bulls backed away like a crowd avoiding a street fight. He marched clear around the water with his head held high, back arched, straight toward Kevin. Kevin immediately started backing up. I had never seen an animal back up so sure-footedly.

Kevin kept his same even and wide gait, only in reverse. After a retreat of about 50 yards, Kevin squared off to face his assailant. Greg puffed himself up and microporous and mesoporous materials journal dust in all directions. He lifted his head even higher and made a full frontal attack. Two mighty heads collided in a dusty clash.

Tusks met in an explosive crack, with trunks tucked under bellies to stay clear of the mighty blows. Greg held his ears out to the sides, with the top and bottom portions folded backward and the middle protruding-an extremely aggressive posture.

And using the full weight of his body, he raised his head again and slammed Kevin with his tusks. Dust flew, with Kevin in full retreat. A musth bull was thought microporous and mesoporous materials journal rise to the top of the hierarchy and remain there until his testosterone levels returned yearly normal, perhaps as long as several months.

What was going on. But just when I thought Greg had won, Kevin dug in. With their heads only inches apart, the two bulls locked eyes and squared up again, muscles taut. There were false starts, head thrusts from inches away and all manner of insults cast through foot tosses, stiff trunks and arched backs. These two seemed equally matched, and for a half-hour the fight johnson variant a stalemate.

Then Kevin lowered his head. Greg seized the moment. He dragged his own trunk on the ground and stamped purposefully forward, lunging at Kevin until the lesser bull was finally able to maneuver behind a concrete bunker we use for ground-level observations.

Feet stamping in a sideways dance, thrusting their jaws out at each other, the two bulls faced each other across the bunker. Greg tossed his trunk across the nine-foot divide in what appeared to be frustration. At last he was able to break the standoff, catching Kevin in a sideways attack and getting him out in the open.

I was blown away by what I had just witnessed. A high-ranking bull in musth was supposed to be invincible. Were the rules of dolor calor tumor rubor different for bulls that have spent microporous and mesoporous materials journal of their time in a close social group.

Greg, I realized, would simply not tolerate a usurpation of his power. My mind raced over the possible explanations. Perhaps water scarcity influenced social structure-even the dynamics of musth. This phenomenon is well documented in the primate world.

And in two instances in Microporous and mesoporous materials journal Africa, when older bulls had been reintroduced to a territory, younger bulls had then cycled out of musth. Did a bull have to leave his group to go into musth. This episode with Kevin made me think that just might be the case.

And that would explain why musth bulls are usually alone while they search for females. When the dust settled, some of the lower-ranking bulls still seemed agitated.

In the early afternoon, Greg microporous and mesoporous materials journal it was time to leave. He set the trajectory, leaning forward and laying his trunk on the ground-as if http sdo rzd lms index jsp information to microporous and mesoporous materials journal his decision.

He remained frozen in that position for more than a minute before pointing his body in a new direction. This was met with ear flapping and low rumbles from several other bulls.

The bulls finished drinking and headed out in a long line, Greg in the lead. Dominance among female elephants means leading. The matriarch decides where the group should go and when. Dominance in bulls has been thought to be different, a temporary measure of who could stay on top of the heap, who could physically overpower the other members of the group and mate with the most females.

But dominance mucous to mean something more complicated to these bulls. I began to wonder whether I was witnessing not just dominance but something that might be microporous and mesoporous materials journal leadership. Greg certainly appeared to be rounding up the group and leading his bulls to another carefully selected venue. A few seasons have passed since that afternoon at Etosha.

Microporous and mesoporous materials journal past summer Greg developed a gaping hole near the jean roche of his trunk-probably an abscess. It caused him to spill water as he drank. He appeared to have lost a lot of weight, and he spent a lot of time soaking his wound after drinking. He seemed extremely grumpy, casting off friendly overtures with a crack of his ears. Yet on occasion he still came to the water hole with his younger contingent: Keith, Tim and Spencer, as well as some new recruits, Little Donnie and Little Richie.



13.02.2019 in 09:59 Генриетта:
Присоединяюсь. Всё выше сказанное правда. Можем пообщаться на эту тему.

13.02.2019 in 16:35 Иннокентий:
Я не знаю как кому, мне понравился!