国家地理:Seals Brawl 海豹群架（在线收听） |
| When male Antarctic fur seals head to the beach each spring, it's no vacation. They are basically gonna be here for a month, holding their territory not eating, not sleeping, and just hoping they get some females in. 95% of the Antarctic fur seal population breeds on the beaches of South Georgia Island. Aggressive males get here first, it's often a fight for the best breeding spot and the biggest heroines. It's all hormonal. Everything's about hormones on the beach. This is definitely a muscle beach. The males are so territorial, so aggressive, Naturalist Conrad Field and I will have to be ready to defend ourselves when we go in for a closer look. We have the sticks, something that's not, not to harm them, but simply to hold them off if they charge. They're, they're nasty potentially. Yeah, they're, they're quick as lightening, very, very powerful. These males are weighing 400, 450 pounds. And they can throw a hundred pounds over their shoulder on the run. So they aren't really to be feared but to be respected. And the sticks primarily are just to extend our range out, like this. You can't blame these guys for being hostile, there's a lot at stake. All about real estate and passing new genetic line on. And now the females are coming in, and they will go to the best places on the beach to have their pups, so the males who have the best real estates, they get the most females. So it's the old location, location, location thing? Exactly. These guys stuck in the middle of a river have their work cut out for them. We are definitely in a low-rent district here. These guys have lost, but they are still holding the territory with hopes that the females will come in. She's trying to find the best way, the best real estate possibly. See how big she is? She's a pregnant one, and she's coming down, and these males, if she gets within area, their territory, they will try to herd her and keep her in there. Look at them. Look at them go. Try to get her. Now he's taking a big chance because he's leaving the harem open. So he's just got her in? Yep, he's just got another female. Females give birth to their pups and then mate again 6 to 8 days later. Pup is only a couple of days old, still has a staggering head, about 3 to 4 days. Life on the beach isn't easy for newborn pups. We watch as a mother fights off skuas and a giant petrel looking for a meal. Pups face other dangers. Aggressive males that can easily crush them seemingly unconcerned about whom they are running over. You see what happens, the female moves and the male tries to keep her from going anywhere. He's no connection to the pup, and she's trying to get to her pup. Now this one I don't want to walk towards. Yeah. I don't blame ya. For Antarctic fur seals, life begins, and sometimes ends on the beach. And if anybody ever wanted a lesson in, in elementary evolution and biology, this is it, isn't it? Yeah, the strongest definitely survive in this situation. But to come out and see all this, and all the behaviors, absolutely amazing. at stake: At risk to be won or lost 危险 harem: A group of women sexual partners for one man. 【动】[集合词](与一只雄动物配偶和聚居的)一群雌动物 skua: 【动】贼鸥 |
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