The only 2 published taxonomic accounts of Neoechinorhynchus tenellus are those of Van Cleave (1913) and Van Cleave (1919) from Esox lucius Linnaeus and Sander vitreus (Mitchill) (1⁄4Stizostedion vitreus (Mitchill)). While Van Cleave’s original description is adequate to identify N. tenellus, his description of proboscis armature, lemnisci, reproductive system in both sexes, and eggs was either...

Allometric scaling relationships enable exploration of animal space-use patterns, yet interspecific studies cannot address many of the underlying mechanisms. We present the first intraspecific study of home range (HR) allometry relative to energetic requirements over several orders of magnitude of body mass, using as a model the predatory fish, pike Esox lucius. Analogous with interspecific stu...

Along with increasing eutrophication the pike (Esox lucius) has decreased in numbers in some parts of the Baltic Sea. We undertook a field study to identify the environmental factors affecting condition of pike larvae around the southwestern coast of Finland. We also sampled the natural zooplankton community to reveal food preferences of pike larvae. Our mixed model showed that larval condition...