| olfactory bulb granule cell aggregates: morphological evidence for interperikaryal electrotonic coupling via gap junctions. | anaxonic interneurons of the granule cell type in the mammalian main olfactory bulb (mob) are characterized by prominent membrane specializations, which include reciprocal, interdendritic chemical and electrical synapses; however, the latter are thought to be restricted to the external plexiform layer (epl) and connect granule-mitral- and granule-tufted-cell dendrites (landis et al., 1974). the present study focuses on interperikaryal membrane specializations between tangentially oriented aggreg ... | 1991 | 1904478 |
| a comparison of postnatal thermal physiology and energetics in an altricial (gerbillus perpallidus) and a precocial (acomys cahirinus) rodent species. | 1. daily weight increase is polyphasic in gerbillus perpallidus whereas it follows a linear pattern in acomys cahirinus. 2. young a. cahirinus achieve full homeothermic capacities much earlier (less than or equal to 12 days old) than g. perpallidus (19-21 days old). 3. the differences in the development of the two species are reflected in the alterations of their metabolic rates. 4. in both species, age-dependent phases of development are obvious, beginning, however, much later in g. perpallidus ... | 1988 | 2900101 |
| novel rodent models for macular research. | many disabling human retinal disorders involve the central retina, particularly the macula. however, the commonly used rodent models in research, mouse and rat, do not possess a macula. the purpose of this study was to identify small laboratory rodents with a significant central region as potential new models for macular research. | 2010 | 20976212 |
| taxonomic hypotheses regarding the genus gerbillus (rodentia, muridae, gerbillinae) based on molecular analyses of museum specimens. | methodological improvements now allow routine analyses of highly degraded dna samples as found in museum specimens. using these methods could be useful in studying such groups as rodents of the genus gerbillus for which i) the taxonomy is still highly debated, ii) collection of fresh specimens may prove difficult. here we address precise taxonomic questions using a small portion of the cytochrome b gene obtained from 45 dry skin/skull museum samples (from 1913 to 1974) originating from two afric ... | 2016 | 27047247 |
| sociability and pair-bonding in gerbils: a comparative experimental study. | in a study of gerbils with contrasting social and mating systems (group-living monogamous mongolian gerbil meriones unguiculatus, solitary nonterritorial promiscuous midday jird m. meridianus, and solitary territorial promiscuous pale gerbil gerbillus perpallidus), we employed partner preference tests (ppts) to assess among-species variation in sociability and pair-bonding patterns and tested whether the nature of contact between individuals: direct contact (dc) versus nondirect contact (ndc) af ... | 2019 | 31413709 |