The first flea with fully distended abdomen from the Early Cretaceous of China.
The first flea with fully distended abdomen from the Early Cretaceous of China.
复制标题
中国早白垩世第一只腹部完全膨胀的跳蚤。
DOI：
10.1186/s12862-014-0168-1
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发表时间：
2014-08-27
影响因子：
3.4
通讯作者：
Ren D
中科院分区：
文献类型：
--
作者：
Gao T;Shih C;Rasnitsyn AP;Xu X;Wang S;Ren D
跳蚤是人类、狗、猫、鸟等最臭名昭著的昆虫体外寄生虫，最近被追溯到它的基础和原始祖先在中侏罗世。与现存的蚤类相比，这些大型的基生蚤具有许多不同的特征。尽管有几个具有过渡形态的化石物种填补了进化空白，但这些体外寄生虫的早期进化仍然鲜为人知。本文报道了一种具有过渡性特征的新蚤种--淡兰假杨蚤。中国，产于辽宁省早白垩世义县组，隶属于伪杨科。与已报道的假杨树不同，谭兰的体型相对较小，但胫骨或身体上没有毛节，而雄性的生殖器相对较小和较短。另一方面，淡兰毛蚤具有一些与金龟子过渡蚤相似的特征，如头部小，触角紧凑，触角较小，身体上覆盖着许多僵硬的刚毛。尽管不能排除其他可能性，但腹部极度膨胀的雌性标本表明，它可能已经吃掉了死亡前的最后一餐。通过与其他已报道的雌性蚤类化石的比较，我们计算和估计了谭兰跳蚤P.Tanlan sp.11月可能消耗了0.02毫升(毫升)的血液，大约是现存跳蚤摄入量的15倍。这些新发现进一步支持，到白垩纪早期，蚤类已经进化出广泛的多样性。本文的在线版本(doi：10.1186/s12862-0140168-1)包含补充材料，授权用户可以使用。
Fleas, the most notorious insect ectoparasites of human, dogs, cats, birds, etc., have recently been traced to its basal and primitive ancestors during the Middle Jurassic. Compared with extant fleas, these large basal fleas have many different features. Although several fossil species with transitional morphologies filled the evolutionary blank, the early evolution of these ectoparasites is still poorly known. Here we report a new flea with transitional characters, Pseudopulex tanlan sp. nov., assigned to Pseudopulicidae, from the Lower Cretaceous Yixian Formation of Liaoning Province, China. Different from the previously described pseudopulicids, P. tanlan has relatively smaller body size but lacking any ctenidia on the tibiae or body, while the male with comparatively smaller and shorter genitalia. On the other hand, P. tanlan has some characters similar to the transitional fleas of saurophthirids, such as, a small head, short compacted antennae, small pygidium and many stiff setae covering the body. Even though other possibilities can not be ruled out, the female specimen with extremely distended abdomen suggests that it might have consumed its last meal before its demise. Compared with other reported female flea fossils, we calculate and estimate that P. tanlan sp. nov. might have consumed 0.02 milliliter (ml) of blood, which is about 15 times of the intake volume by extant fleas. These new findings further support that fleas had evolved a broad diversity by the Early Cretaceous. The online version of this article (doi:10.1186/s12862-014-0168-1) contains supplementary material, which is available to authorized users.
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影响因子：
64.8
作者：
Swisher, CC;Wang, YQ;Wang, Y
通讯作者：
Wang, Y
中国中生代的多种过渡性巨型跳蚤
影响因子：
64.8
作者：
Huang, Diying;Engel, Michael S.;Nel, Andre
通讯作者：
Nel, Andre
影响因子：
1.4
作者：
KOEHLER, PG;PATTERSON, RS
通讯作者：
PATTERSON, RS
来自中国的新过渡跳蚤凸显了早白垩世外寄生昆虫的多样性
影响因子：
9.2
作者：
Gao, Taiping;Shih, Chungkun;Ren, Dong
通讯作者：
Ren, Dong
影响因子：
64.8
作者：
RIEK, EF
通讯作者：
RIEK, EF