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新发现的甲虫出生婴儿生活

2018-09-24 12:14

In almost all mammals, the babies develop inside the mother before they are born, a process we all know as gestation。 Outside mammals, though, live baby birth is quite rare, especially among insects。 That永乐国际’;s why everybody got excited by the discovery of a new long-horn beetle species which uses ovoviviparity —; a reproductory mode in which females hatch eggs inside the body。

This is a male specimen of the new long-horned beetle species。 Credit: Radim Gabriš

This is a male specimen of the new long-horned beetle species。 Credit: Radim Gabriš

The Long-horn beetle (Cerambycidae) family is one of the largest out there with 35,000 beetles all over the world。 Now, a team of researchers from the Czech Republic has made a couple of new additions to the family having discovered a couple of elusive species from the mountains of northern Borneo。

“;We studied the diversity of the rarely collected wingless long-horned beetles from Borneo, which is one of the major biodiversity hotspots in the world,”; says main author and PhD student Radim Gabriš。 “;The mountains of northern Borneo, in particular, host a large number of endemic organisms。”;

These strange wingless beetles had been reported before by scientists over 60 years ago, but since then not much interest has been given。 That’;s too bad, because when Gabriš and colleagues dissected some museum specimens they found two females contained  large larvae inside their bodies。

That was striking because most insects are  oviparous, meaning females lay eggs and the embryonic development occurs outside the female’;s body。 Ovoviviparous species are similar to viviparous species, which among other includes humans, but differ in that there is no placental connection and the unborn young are nourished by egg yolk。

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