Science Today: New Mammal Discovery: Etendeka Round-Eared Sengi | California Academy of Sciences
-
0:05 - 0:10Meet macroscelides micus,
or the Etendaka round-eared sengi. -
0:10 - 0:11It's a mouthful.
-
0:11 - 0:14(female narrator) Sengis,
or elephant shrews, -
0:14 - 0:17are very unusual mammals
found only in Africa. -
0:17 - 0:20(Jack Dumbacher) The early biologists
who discovered them and described them, -
0:20 - 0:24they tried to lump them in with shrews,
but they were unusual for shrews -
0:24 - 0:28because they had a long proboscis -
their nose was long, -
0:28 - 0:32not quite like an elephant's trunk,
but it can move them around, -
0:32 - 0:34and their nostrils are at the end
like an elephant's trunk, -
0:34 - 0:37and so they called them elephant shrews.
-
0:37 - 0:39It turns out that they're
genetically more closely related -
0:39 - 0:42to elephants, and aardvarks, and dugongs
-
0:42 - 0:45than they are to the other shrews.
-
0:45 - 0:49(narrator) This news species
was discovered and described recently -
0:49 - 0:51by academy scientists
and their colleagues. -
0:51 - 0:55They found the specimen in Namibia,
where other sengis live, -
0:55 - 0:59but with its red hair, it looked
a little different from the rest. -
0:59 - 1:00(Jack) It was unclear at the time
-
1:00 - 1:03whether that was
just a red-haired individual -
1:03 - 1:06or whether that was actually
genetically very distinct from the others. -
1:06 - 1:09So it took quite a bit of work,
looking at the skull, -
1:09 - 1:12looking at the skins,
and then some genetic work -
1:12 - 1:16before we realized
that it actually was very distinct. -
1:16 - 1:17Then once we knew that we had
-
1:17 - 1:20something new and different
from all the others, -
1:20 - 1:21we actually went back to the field
-
1:21 - 1:24so that we could learn
a little bit more about them. -
1:24 - 1:26(narrator) Their fieldwork confirmed it,
-
1:26 - 1:29and the team recently
published their results. -
1:29 - 1:30(Jack) It turns out
-
1:30 - 1:33that it's the smallest
of all of the elephant shrews, -
1:33 - 1:35so it's the smallest member of its order.
-
1:35 - 1:38In addition to being smaller,
it has a very large gland on the tail, -
1:38 - 1:41which it probably uses for scent marking.
-
1:41 - 1:44This particular species
tends to live in areas -
1:44 - 1:49that are very remote and extremely dry,
so they probably need a huge home range. -
1:49 - 1:52That's how they might tell
other individuals where they are. -
1:52 - 1:56Even their mate might be hard to find
on such a large home range -
1:56 - 1:57without something like that.
-
1:57 - 2:00(narrator) To learn more
about these critters, -
2:00 - 2:03Jack and Galen Rathbun
will return to the field this fall. -
2:03 - 2:05(Jack) We want to go
back to Namibia this fall -
2:05 - 2:07to try and understand its home range,
-
2:07 - 2:10whether they're monogamous
like some of the other groups, -
2:10 - 2:13what they feed on, when they're active
- during the night or day - -
2:13 - 2:15probably mostly during the night.
-
2:15 - 2:19we're going to be radio-collaring
these teeny, tiny mouse-like critters -
2:19 - 2:22and following them around
in the desert with radios. -
2:22 - 2:26(narrator) But for now,
these new small mammals are making news. -
2:26 - 2:27(Jack) We tend to think
-
2:27 - 2:31that we know the mammal fauna
of the world fairly well, -
2:31 - 2:34and so when you do discover
a new mammal, it's a pretty special thing. -
2:34 - 2:36♪ (light music) ♪
- Title:
- Science Today: New Mammal Discovery: Etendeka Round-Eared Sengi | California Academy of Sciences
- Description:
-
Jack Dumbacher, Academy scientists, and their colleagues have described a new animal species: a tiny Entendeka sengi, found in Namibia, and related to elephants.
- - -
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- English
- Team:
- California Academy of Sciences
- Duration:
- 02:46