Multiple birth, the delivery of more than one offspring in a single birth event. In most mammals the litter size is fairly constant and is roughly correlated with features such as body size, gestation period, type of uterus, and teat number. Among primat
In the current study, we investigated the feasibility of using a multiple-choice interface as cognitive enrichment by providing three tasks to the animals: two versions of a motor task that were rewarded with diluted juice for correct responses, and a picture viewing task that delivered no fluid...
Circle the correct spelling of words for animals, and then color the picture of the words. The words are fish, bird, whale, rodent, insect, spider, worm, snake, turtle, frog. What Am I? Animals #1 For each animal picture, choose the word that best describes it. Orgo to the answers...
The evolution of tooth complexity in Squamata encompasses multiple independent radiations defined by increasingly complex teeth. This mirrors patterns of mammalian diversification, in which stem mammals show repeated independent evolutions of multicuspid teeth through the Palaeozoic and Mesozoic4,12,13, the...
In all the above mentioned studies hybrid sterility was assessed by measuring the length of the testis, the motility of the sperm, or the ability to yield offspring, but not one of them examined the details of spermato- genesis in the hybrid males. Sterility, however, is only the final ...
In northern China, Barn Swallow nests in rural areas are usually located in yards, and these houses are usually low, with only one floor in both Harbin and Panjin (C). Sometimes, in urban areas, Barn Swallows may nest inside old buildings and enter and exit through the windows of ...
Two-photon imaging in layer 2/3 of the primary somatosensory “barrel” cortex (S1bf) revealed that, in well-trained animals, neurons had heterogeneous selectivity to multiple task variables including not just sensory input but also the animal’s action decision and the trial outcome (presence ...
PROBLEM TO BE SOLVED: To provide a spinning frame capable of continuously spinning a multiple kinds of feed yarns by holding a multiple kinds of feed yarns and allowing the passage of only one yarn to effect the continuous spinning of multiple kinds of feed yarns. ;SOLUTION: Feed yarns 2a,...
Studies on the gut microbiota of animals have largely focused on vertebrates. The transmission modes of commensal intestinal bacteria in mammals have been well studied. However, in gastropods, the relationship between gut microbiota and hosts is still poorly understood. To gain a better understanding ...
AB strain and Tg:(XlEef1a1:dclk2a-GFP) strain (from Marina Mione, CIBIO, University of Trento, Italy)14were used. Animals were housed under standard conditions. Zebrafish embryos were kept in E3 medium63and staged as previously described5. Embryonic manipulations were done in E3 medium. The...