Sea raven (Hemitripterus americanus) given intraperitoneal implants of coconut oil containing cortisol (50 mg kg-1) and sampled 5 days later had plasma cortisol, glucose and urea concentrations higher than in a sham-implanted group. No differences in plasma ammonia, free amino acid or fatty acid concentrations were apparent between the cortisol- and sham-treated groups. There was no change in h...

We have performed an in situ test of Raven’s prediction that there is a reversal of the relationship between cell size and maximum achievable growth rate in unicellular algae at the low end of size classes. In a natural population of marine phytoplankton, including the smallest picoeukaryote known to date, and under both nutrient sufficiency and deficiency, we find a maximum in growth rate (4.8...

Raven and Song Scope are two, state-of-the-art automated sound analysis tools, based on machine learning techniques for detection of species vocalisations. Individually, these systems have been the subject of a number of reviews; however, to date there have been no comparisons made of their relative performance. This paper compares the tools based on six aspects: theory, software interface, eas...

Human subsidies have resulted in the rapid growth of populations of common ravens (Corvus corax) in the Mojave Desert. This is a management concern because ravens prey on threatened desert tortoises (Gopherus agassizii). We conducted weekly counts for 29 months at 10 sites on the US Army’s National Training Center, Fort Irwin, California to evaluate factors affecting the distribution of ravens....

bal cognitive abilities, birth weight, and minimal brain injury. A total of 45 (20 MZ and 25 DZ) twins pairs of both sexes were matched with 90 singletons of the same age, sex, and schooclass. All subjects were Israeli kibbutzl born youngsters, and as such were all of the same social background. The following data were acquired for all subjects: period of gestation, type of delivery, birth weig...

raven progressive matrices (rpms) and wechsler intelligence scale for children (wsic-r) are two common general intelligence measuring scales used in iranian high schools. in this paper the relationships between g factor scales and students’ reading comprehension, grammar, and vocabulary was examined by correlation and regression analysis. standard tests of grammar and vocabulary and cambridge k...