The post‐embryonic odor imprinting paradigm suggests Chinook salmon (Oncorhynchus tshawytscha) acquire memory to stream‐specific amino acid olfactory odors prior to emergence as fry. Because effects of olfactory experience on development can be examined by mapping olfactory sensory neurons extending into distinct territories of glomerular neuropil in the olfactory bulb, glomerular patterning from early yolk‐sac larva to fry was documented in wild salmonids, a temporal scale not yet thoroughly explored. Labeling olfactory sensory neurons with anti‐keyhole limpet hemocyanin (anti‐KLH) revealed seven spatially conserved glomerular territories visible at hatch and well established by the late yolk‐sac larva developmental stage. Because of the responsiveness of microvillous olfactory sensory neurons to amino acids, corresponding glomeruli in the lateral bulbar region were mapped using anti‐calretinin. The dorsolateral territory, distinct glomeruli of the lateral glomerular territory and the ventromedial glomeruli were immunoreactive to both KLH and calretinin. This study offers a morphological description of glomerular patterning in post‐embryonic stages in wild Chinook salmon, a temporal window previously shown to be significant for olfactory imprinting. J. Morphol. 278:464–474, 2017. © 2017 Wiley Periodicals, Inc.

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The cover art displays several tools and equipment associated with clinicians and  clinical practice. Physicians employ various utensils to facilitate the physical examination, investigation, and ultimately the diagnosis and treatment of patients. However, proper training is necessary for the appropriate utilization of these tools and for interpretation of meaningful results. The tools themselves do not make a whole physician. A competent physician uses these tools along with their acquired knowledge and clinical experience to guide patient care.