the aim of this study was to provide necessary information on the age, growth and sex ratio of one of commercially important cyprinid species, alburnus chalcoides in the southern caspian sea (north iran) from 2010 through 2011. 53 specimens of both sexes (males and females) were collected monthly. the samples were transported tothe laboratory for further biological measurements and otolith extr...

72 m9 sis performed with WL obtained 83.7% of correct classification. RMSAC and RMSECV are lower in the EFA model. Length values predicted by PLS models were regressed on observed otolith length for both EFA and WL7 shape descriptions. PLS model generated values much efficiently related with measured lengths. In both cases a significant high correlation was found (puncorr.<0.01); EFA model show...

Long-term variability in zooplankton N/N was investigated in two species of calanoid copepods (Calanus pacificus and Eucalanus californicus) and two chaetognaths (Sagitta bierii and Sagitta euneritica) sampled in the spring of selected years from 1951 to 2001 off the central California coast. No statistically significant trend in N/N was detected for any of the four species, with isotopic ratio...

This report introduces a basic alignment scheme for the GEM muon detector. Optical straightness monitors are described, and their application discussed. Alternative alignment technologies are suggested and techniques are identified that can provide multipoint measurements. The problem of global alignment is posed, and several concepts are presented to attain the required precision. Some Alignme...

Elaborate, sexually dimorphic traits are widely thought to evolve under sexual selection through female preference, male-male competition, or both. The orangethroat darter (Etheostoma spectabile) is a sexually dichromatic fish in which females exhibit no preferences for male size or coloration. We tested whether these traits affect individual reproductive success in E. spectabile when multiple ...

Populations of Etheostoma tallapoosae (Tallapoosa Darter) have previously been shown to be genetically divergent for mitochondrial DNA. In this study, PCR primers were developed to amplify portions of six nuclear genes, and sequences of these genes were assessed in three of the most divergent Tallapoosa Darter populations. This analysis shows that these populations are also highly divergent for...

The Philosophies Held by Instructors of Lifelong-learners (PHIL) was developed to identify a respondent's preference for one of the major schools of philosophical thought: Idealism, Realism, Pragmatism, Existentialism, or Reconstructionism. Using the pool of items from an established instrument, its final form and content validity were determined by a series of discriminant analyses. Criterion-...

A total of 74 neurons that lacked eye movement sensitivity were recorded within the confines of the rostral medial and medial lateral vestibular nuclei. Of these, 36 had response characteristics that were consistent with combined canal and otolith inputs (CAOT neurons), 18 received canal inputs only (CA neurons), and 20 had otolith inputs only (OT neurons). Responses were measured during both r...

Ciliary motility is necessary for many developmental and physiological processes in animals. In zebrafish, motile cilia are thought to be required for the deposition of otoliths, which comprise crystals of protein and calcium carbonate, on hair cells of the inner ear. The identity of the motile cilia and their role in otolith biogenesis, however, remain controversial. Here, we show that the ear...