Anadidymous and Katadidymous Embryos of Hynobius nebulosus (Schlegel).
نویسندگان
چکیده
منابع مشابه
Ultrastructural changes in development and aging of the interrenal cell of the salamander, Hynobius nebulosus.
The fine structure of interrenal cells in the salamander, Hynobius nebulosus, from prometamorphic larvae to its adult stage, was observed with electron and light microscopes. In all the animals examined the interrenal cell clusters were located at the medial edge of the ventral surface along the total length of each kidney, suggestive of a primitive nature. In larval salamanders, the interrenal...
متن کاملElectron microscopic studies on the thyroid gland of larval salamanders Hynobius nebulosus during metamorphosis.
nae of granular endoplasmic reticulum, dark cells with flattened cisternae, dark cells filled with colloid particles, and altered and destroyed cells. The ordinary type cells have previously been described in the thyroid during metamorphosis, whereas the unusual type has been overlooked. It was suggested that the two types of dark cells correspond to Langendorff's colloid cells and that all the...
متن کاملEstimation of age structure by skeletochronology of a population of Hynobius nebulosus in a breeding season (Amphibia, Urodela).
Using skeletochronology, we determined the age structure of adult Hynobius nebulosus from Kyoto in the breeding season of 1998. From previously marked individuals, the lines of arrested growth proved to be formed once per year, indicating the number of winters each salamander experienced. The age at first reproduction was estimated to be 2.8-2.9 yrs of age in males and 3.8-3.9 yrs in females. T...
متن کامل716-720 Schlegel
Purpose: Epithetic solutions in the maxillofacial region are indicated if plastic surgery reconstruction is not a valid option for an extensive defect. The purpose of this study was to examine whether the extraoral implants used provided sufficient retention to be used as anchoring aids. Materials and Methods: Between November 1999 and September 2002, 33 identical modified Ankylos implants for ...
متن کاملPopulation structure of the salamander Hynobius retardatus inferred from a partial sequence of the mitochondrial DNA control region.
We investigated population structure of the salamander Hynobius retardatus in Hokkaido, Japan using partial sequences of the mitochondrial DNA control region (490 bp) from 105 individuals. The salamanders were collected from 28 localities representing the entire regional distribution of this species. Twenty different haplotypes distributed across three haplotype groups were identified. Group 1 ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Folia Anatomica Japonica
سال: 1928
ISSN: 2187-0152
DOI: 10.2535/ofaj1922.6.3_291