Search results for "Behavior"
showing 10 items of 13975 documents
Evidence of lipofuscin accumulation in the deep-water red shrimp Aristaeomorpha foliacea (Risso, 1827)
2008
Lipofuscin, a non-degradable, degenerative fluorescent pigment which accumulates in post-mitotic cells, represents a promising method for ageing marine crustaceans. The presence and accumulation of lipofuscin has been studied in the deep-water red shrimp Aristaeomorpha foliacea (Risso, 1827) to assess its use as a tool for ageing larger (i.e., older) specimens and thus improve knowledge of the growth and longevity of this species. Specimens, gathered during experimental trawl surveys carried out in the Strait of Sicily (Mediterranean Sea), were stored directly on-board in 10% buffered formaldehyde solution; their brain was thereafter removed, prepared with various current histological techn…
Distribution and biology of the Blackmouth catshark Galeus melastomus in the Strait of Sicily (Central Mediterranean Sea)
2009
The Blackmouth catshark, Galeus melastomus, Rafinesque, 1810 (Carcharhiniformes; Scyliorhinidae), is a common, although at present discarded, by- catch of the bottom trawl fisheries in the Strait of Sicily. Given its ecological interest, data gathered in experimental bottom trawl surveys were analysed in order to describe its distribution and main biological traits. The Blackmouth catshark was sampled almost exclusively on the upper slope (200-800), showing the highest frequency of occurrence (69-100%), biomass (BI; 10-85 kg*km-2) and density (DI; 54-506 N*km-2) indexes in the deeper (501-800m) grounds. Individual size (total length, TL, mm) were between 70-590 and 90-510 in females and mal…
First report of an olive ridley (Lepidochelys olivacea) inside the Mediterranean Sea
2015
We report the first confirmed occurrence of a Lepidochelys olivacea in the Mediterranean Sea based on the study of an individual stranded on a beach, located in the town of Oropesa del Mar (40º05ʹ32ʺN, 0º08ʹ02ʺE), Castellón province, East Spain, in May 2014. Morphological and genetic analyses were used to confirm the identification of the species. The individual had a sequence that matched the 470 bp Lepidochelys olivacea haplotype F (Genbank accession number: AF051773), found in several Atlantic populations. This becomes one of the northernmost known occurrences of olive ridleys in the world and is the first reports of this species in the Mediterranean Sea.
New Mediterranean Marine biodiversity records (December, 2013)
2013
M. Bilecenoglu [et al.]
Reproductive features of the deep-water rose shrimp, Parapenaeus longirostris (Crustacea: Penaeidae), in the Strait of Sicily
2010
The deep‑water rose shrimp, Parapenaeus longirostris (Lucas, 1846), is one of the most valuable and heavily exploited demersal species of the Mediterranean bottom trawl fisheries. The basic life traits of this shrimp, in particular its reproductive aspects, are regularly monitored during experimental trawl surveys carried out in the Mediterranean Sea. Gonadic condition and maturity status for estimating the size at onset of sexual maturity are commonly assessed in females, using macroscopic color scales, histologically validated only in a few geographical areas. In this study, histological analyses were performed on rose shrimps collected from a trawl survey carried out in the Strait of Sic…
Investigating occupational well-being and leadership from a person-centred longitudinal approach: congruence of well-being and perceived leadership
2015
The overall objective of this longitudinal study was to investigate the association between perceived leadership and employee well-being from a person-centred approach utilizing the principles of the conservation of resources theory (Hobfoll, S. E. (1989). Conservation of resources: A new attempt at conceptualizing stress. American Psychologist, 44, 513–524; Hobfoll, S. E. (2002). Social and psychological resources and adaptation. Review of General Psychology, 6, 307–324). First, we aimed to identify latent classes (i.e., subgroups) of employees that demonstrated similar mean levels of stability and change in occupational well-being (i.e., vigour and emotional exhaustion) across a mean time…
Constructing leadership by storytelling – the meaning of trust and narratives
2013
PurposeThis paper approaches manager's storytelling as a means for promoting organizational aims and for constructing leadership, and examines the intentions of managers in this process. We focus on the context of storytelling and the content of the stories told by managers in order to identify areas of influence on subordinates. Storytelling in relation to building a narrative identity for the manager is also studied.Design/methodology/approachThis is an exploratory empirical study that draws on 13 thematic interviews with Finnish managers working in different fields. A qualitative thematic analysis is used in order to analyze the data.FindingsAs a result of the study we found that manager…
What drives future business leaders? How work values and gender shape young adults' entrepreneurial and leadership aspirations
2018
Highlights • Work values strongly predict later entrepreneurial aspirations and leadership aspirations. • The pattern of relationships was similar but not identical for both aspirations. • There is a gender gap in both entrepreneurial aspirations and leadership aspirations. • Gender differences in work values contribute to the gender gap in these aspirations. Abstract Who wants to become a business leader? We investigated whether young adults' work values (i.e., the importance placed on different job characteristics and rewards) predict their entrepreneurial aspirations (i.e., the intention to create a venture) and leadership aspirations (i.e., the intention to become a leader in a business…
Leadership as an enabler of professional agency and creativity : case studies from the Finnish information technology sector
2018
This paper summarizes and elaborates the findings of a research project on leadership as an enabler of professional agency and creativity in information technology organizations. The synthesis in this paper is based on a summary of three primary studies. Each of the studies approached leadership, creativity and/or professional agency with a specific focus. Leaning on a mixed‐methods and ethnographic approach, including various empirical data collection and analytical tools, the project investigated the relationship between professional agency and creativity; issues that frame professional agency and creativity; and the meaning of leadership practices for the enhancement of agency and creati…
Is fatherhood allowed? : Media discourses of fatherhood in organizational life
2019
It has been claimed that in the context of organizations and management, fathers are invisible. One source of tension for fathers who work and who want to participate in family life is that even though involved fatherhood is emerging in many western societies, a family-oriented male identity is likely to be problematic for men in organizations. This article aims to contribute to a better understanding of a professional and managerial men's work-family relationship using discourse analysis on data from three different media sources in Finland, published during 1990-2015. We identified two competing discourses: one of stasis, the other of change. The stasis discourse is constructed around tra…