Počet záznamů: 1  

Gigantism in tadpoles of the Neogene frog Palaeobatrachus

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    SYSNO ASEP0051239
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevGigantism in tadpoles of the Neogene frog Palaeobatrachus
    Překlad názvuGigantism in tadpoles of the Neogene frog Palaeobatrachus
    Tvůrce(i) Roček, Zbyněk (GLU-S) SAI, RID
    Böttcher, R. (DE)
    Wassersug, R. (CA)
    Zdroj.dok.Paleobiology - ISSN 0094-8373
    Roč. 32, č. 4 (2006), s. 666-675
    Poč.str.10 s.
    Jazyk dok.eng - angličtina
    Země vyd.US - Spojené státy americké
    Klíč. slovaAmphibia ; Anura ; Neogene ; Germany ; development
    Vědní obor RIVEG - Zoologie
    CEPIAA3013206 GA AV ČR - Akademie věd
    CEZAV0Z30130516 - GLU-S (2005-2011)
    UT WOS000242037500008
    EID SCOPUS33845303512
    DOI10.1666/05073.1
    AnotaceWe describe three giant palaeobatrachid fossil tadpoles of the genus Palaeobatrachus from the Miocene of Randecker Maar, Germany. The largest was 150 mm at the beginning of metamorphosis (stage 60), whereas the smallest was 100 mm and approaching the end of metamorphosis (stage 64). In contrast, normal palaeobatrachid tadpoles and their pipid relatives, both extinct and extant, rarely exceed 60 mm in length. We review here both ecological and pathological conditions that are conducive to the development of gigantism in tadpoles. Tadpoles that lack a thyroid gland become exceptionally large and arrest development at early hindlimb stages (NF stages 53–56). However, the advanced metamorphic stages of the giant Palaeobatrachus tadpoles indicate that they were able to metamorphose, and thus were not athyroid. Environmental factors—pond size and permanence, predators, duration of the growing season— may all contribute to tadpole gigantism in certain extant anuran species.
    PracovištěGeologický ústav
    KontaktVáclava Škvorová, skvorova@gli.cas.cz, Tel.: 233 087 273 ; Jana Popelková, popelkova@gli.cas.cz, Tel. 233 087 272
    Rok sběru2007