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Molecular cytogenetic identification and characterization of Robertsonian chromosomes in the large Japanese field mouse (Apodemus speciosus)...
These results indicate that the long and short arms of the Rb chromosomes are homologous to Apodemus speciosus chromosomes 12 and 19 (defined in a previous study), respectively. This ten-marker series can be useful for detecting chromosome-specific divergence between the two karyotypic populations a...
Phylogeny of Oriental voles (Rodentia: Muridae: Arvicolinae): molecular and morphological evidence.
We explore the systematics of all species of Oriental voles, except Eothenomys wardi, using a combination of DNA sequences and morphological data. Our molecular phylogeny, based on two mitochondrial genes (COI and cyt b), resolves the Oriental voles as a monophyletic group with strong support. Four...
Histochemical analyses of hepatic architecture of the hagfish with special attention to periportal biliary structures.
The hagfish liver was histochemically examined with special attention to biliary structures around the portal veins. Hepatocytes were organized into tubular structures surrounded by sinusoids. Biliary ductule structures, which resemble the ductal plates transiently appearing in mamma...
The application of temperature data loggers for remotely monitoring the nests of Emei Shan Liocichla (Liocichla omeiensis).
We demonstrate how TDL can also be used to determine different breeding stages and nest success of the vulnerable Emei Shan Liocichla (Liocichla omeiensis). All nests that contained at least one egg were divided into two groups. Group I included six nests monitored traditionally by the observers' vi...
Asymmetric female preferences for courtship pheromones in two closely-related newt species, the smooth newt (Lissotriton vulgaris) and the C...
The smooth (Lissotriton vulgaris) and Carpathian (L. montandoni) newts are sister species. These are separated by a moderate genetic distance, but exhibit striking morphological differences, especially in male epigamic traits. In the areas where they co-occur, they readily mate with...
Behavioral laterality and morphological asymmetry in the cuttlefish, Sepia lycidas.
We examined behavioral laterality in attacks on prey shrimp by the cuttlefish, Sepia lycidas, and correlated this to their morphological asymmetry. Behavioral tests in the laboratory revealed significant individual bias for turning either clockwise or counterclockwise toward prey, suggesting behavio...
Termite soldier differentiation in incipient colonies is related to parental proctodeal trophallactic behavior.
We analyzed soldier differentiation in incipient colonies of Zootermopsis nevadensis, in which only a single soldier develops via a presoldier stage, and is stable during early colony ontogeny. We observed that the oldest third instar differentiated into a presoldier within about eight days from its...
The postbranchial digestive tract of the ascidian, Polyandrocarpa misakiensis (Tunicata: Ascidiacea). 2. Stomach.
The organization of the stomach in the compound styelid ascidian, Polyandrocarpa misakiensis, is described, and the morphology and cell types of the stomach is discussed from the phylogenetic viewpoint. The stomach is a sac-like organ whose wall is formed into longitudinal folds. The...
A new species of Paramacrochiron (Copepoda: Cyclopoida: Macrochironidae) associated with the rhizostome medusa Rhopilema hispidum collected ...
Paramacrochiron thailandicum n. sp. (Copepoda: Cyclopoida: Macrochironidae) is described from the rhizostome medusa Rhopilema hispidum occurring in the Gulf of Thailand. The new species is distinguishable from other congeners mainly by detailed features of the fourth legs and the uro...
Localization of water channels in the skin of two species of desert toads, Anaxyrus (Bufo) punctatus and Incilius (Bufo) alvarius.
We used antibodies raised against AQP-h2 and AQP-h3 to characterize the expression of homologous AQPs in the skin of two species of toads that inhabit arid desert regions of southwestern North America. Western blot analysis of proteins gave positive results for AQP-h2-like proteins in the pelvic ski...