scholarly journals Ecology and conservation of the Mediterranean trout in the central Apennines (Italy)

2018 ◽  
Vol 78 (1) ◽  
Author(s):  
Massimo Lorenzoni ◽  
Antonella Carosi ◽  
Massimo Giovannotti ◽  
Gianandrea La Porta ◽  
Andrea Splendiani ◽  
...  
Keyword(s):  
Salmo Trutta ◽  
Management Strategies ◽  
Fish Fauna ◽  
Demographic Characteristics ◽  
Environmental Data ◽  
Adult Density ◽  
Central Apennines ◽  
Native Populations ◽  
The Mediterranean ◽  
Mediterranean Trout

The Mediterranean brown trout (Salmo trutta complex) is one of the freshwater fish species complex at greater risk of extinction in the Mediterranean area. The introduction of alien invasive species and their interaction with the native fauna represent some of the major threats to the survival of this species. Currently, the genetic variability of the Mediterranean trout (Salmo trutta complex) is being compromised by the introgressive hybridization with the Atlantic trout (Salmo trutta Linnaeus, 1758). Therefore, it is necessary to gain further knowledge on genetic and demographic characteristics of Mediterranean trout populations, that, combined with environmental and angling data, will allow to undertake sound conservation strategies. The aims of the present study were to analyze: i) the demographic characteristics of the Mediterranean trout in seven central Apennine river basins where native populations are threatened by stocking with the domestic trout of north Atlantic origin; ii) the influence of both environmental parameters and different fishery management strategies on the status of native trout populations. The project focuses on 14 sites included in the Natura 2000 EU wide network of nature protection areas, established under the 1992 Habitat Directive. A total of 25 watercourses were investigated for a total of 32 sampling sites. A census of the fish fauna was carried out by electrofishing at each sampling location. Fish and environmental data were collected in spring and autumn 2014. The results obtained in the present research allowed us to detect the presence of three residual Mediterranean trout populations with a high degree of genetic integrity in the study area. The native trout populations were characterized by higher abundances and higher adult density values. Well-structured native populations with higher legal-size specimens density and poor body conditions in terms of relative weight were observed in the no-fishing areas, probably due to the presence of intraspecific competition phenomena. The environmental analysis confirmed the key role played by the geological characteristics of the central Apennines in shaping the introgression levels observed in the wild trout populations, while the recovery of the water quality appears decisive in the development of management strategies aimed at their conservation.

scholarly journals The role of the south-western Alps as a unidirectional corridor for Mediterranean brown trout (Salmo trutta complex) lineages

2020 ◽  
Vol 131 (4) ◽  
pp. 909-926
Author(s):  
Andrea Splendiani ◽  
Patrick Berrebi ◽  
Christelle Tougard ◽  
Tommaso Righi ◽  
Nathalie Reynaud ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Spatial Distribution ◽  
River Basin ◽  
Salmo Trutta ◽  
Western Alps ◽  
Molecular Dating ◽  
The South ◽  
The Mediterranean ◽  
Mediterranean Trout

Abstract The role of the south-western Alps as a corridor for Mediterranean trout (Salmo trutta complex Linnaeus, 1758) was evaluated in order to understand the influence of the last glacial events in shaping the spatial distribution of the genetic diversity of this salmonid. For this, the allochthonous hypothesis of a man-mediated French origin (19th century) of the Mediterranean trout inhabiting the Po tributaries in the Italian side of the south-western Alps was tested. A total of 412 individuals were analysed at the mitochondrial control region. The phylogenetic classification was carried out by using a Median-Joining Network analysis. Mismatch pair-wise analysis, molecular dating and Kernel density distribution analysis of the main mitochondrial lineages were evaluated to compare past demographic dynamics with the current spatial distribution of genetic diversity. The main outcomes resulted strongly in agreement with a biogeographic scenario where the south-western Alps acted as a unidirectional corridor that permitted the colonization of the upper Durance (Rhône River basin) by trout from the Po River basin. Therefore, the Mediterranean trout should be considered as native also along the Italian side of the south-western Alps and the allochthonous hypothesis should be rejected.

scholarly journals Life+ Trout Project (LIFE12 NAT/IT/0000940) for the recovery and conservation of Mediterranean trout (Salmo trutta complex) in the central Apennines (Italy).

2015 ◽  
Vol 2 ◽  
Author(s):  
Caputo Barucchi Vincenzo ◽  
Carosi Antonella ◽  
Giovannotti Massimo ◽  
La Porta Gianandrea ◽  
Splendiani Andrea ◽  
...  
Keyword(s):  
Salmo Trutta ◽  
Central Apennines ◽  
Mediterranean Trout

Low First Wave COVID-19 cases and health seeking behaviors across the six geopolitical zones of Nigeria

2021 ◽  
Vol 42 (1) ◽  
pp. 1-8
Author(s):  
C.N. Ukaga ◽  
S.O. Sam-Wobo ◽  
R.H. Muhammed ◽  
H.O. Mogaji ◽  
O.A. Surakat ◽  
...  
Keyword(s):  
Laboratory Testing ◽  
Management Strategies ◽  
Demographic Characteristics ◽  
Community Level ◽  
Health Seeking ◽  
Routine Testing ◽  
Home Management ◽  
Health Seeking Behaviors ◽  
Very High ◽  
Age Category

This study was carried out across the six geopolitical zones to assess knowledge and health seeking behaviors of Nigerians during the first wave of COVID-19 pandemic lockdown in order to understand the seemingly low cases of COVID-19 in Nigeria. Structured and pretested short questionnaires were employed to obtain information electronically and physically across the six geopolitical zones on socio-demographic characteristics of participants; the knowledge of participants on COVID-19 disease; availability and accessibility to testing and isolation centers in the communities, attitudes and health seeking behaviors. Atotal of 1023 respondents; 705 (68.9%) males and 318 (31.1%) females across the six geopolitical zones in Nigeria participated in this study with 477(46.6%) within the 26-45 years age category, and 6(0.6%) above 66 years. Atotal of 985(96.3%) had heard about COVID-19 at the time of survey while a total of  859(84.0%) of the respondents were aware of the presence of COVID-19 laboratory testing centers. Across the geopolitical zones, majority of the respondents 487(47.6%) claimed there are no routine testing for COVID-19 at their community level, while 303 (29.6%) affirmed otherwise and 216(21.1%) did not know if there were routine testing going on or not. On health seeking behaviors across the  country, majority of the respondents 558(54.5%) affirmed they would visit the hospital as the first point of contact if the opportunitypresented itself, 244(23.9%) claimed they would call the NCDC toll line, 2(0.2%) said they would use prayers, while 1(0.1%) respectively claimed they would use home management strategies through visiting chemist stores and checking the internet for solutions. Findings from this study confirm that there is very high awareness of the COVID-19 disease across the country, and limited number of testing centers at the community level. The implications include the possibility of unreported COVID19 cases in the cities as well as in the  communities. Keywords: COVID-19, knowledge, health seeking behaviors, community level 

An observational study of pain self-management strategies and outcomes: does type of pain, age, or gender, matter?

2018 ◽  
Vol 18 (4) ◽  
pp. 645-656 ◽  
Author(s):  
Marion K. Slack ◽  
Ramon Chavez ◽  
Daniel Trinh ◽  
Daniel Vergel de Dios ◽  
Jeannie Lee
Keyword(s):  
Chronic Pain ◽  
Acute Pain ◽  
Management Strategies ◽  
Demographic Characteristics ◽  
Self Management ◽  
Treatment Level ◽  
Pain Group ◽  
Age And Gender ◽  
Pain Characteristics ◽  
And Gender

AbstractBackground and aimsAcute pain is differentiated from chronic pain by its sudden onset and short duration; in contrast, chronic pain is characterized by a duration of at least several months, typically considered longer than normal healing time. Despite differences in definition, there is little information on how types of self-management strategies or outcomes differ when pain is chronic rather than acute. Additionally, age and gender are thought to be related to types of strategies used and outcomes. However, strategies used and outcomes can be influenced by level of education, socioeconomic status, occupation, and access to the health care system, which can confound associations to type of pain, age or gender. The purpose of this study was to examine the association of strategies used for pain self-management and outcomes with type of pain, acute or chronic, age, or gender in a socioeconomically homogenous population, pharmacists.MethodsPharmacists with acute or chronic pain and a valid email completed an on-line questionnaire on demographic characteristics, pain characteristics, pharmacological and non-pharmacological strategies for managing pain, and outcomes (e.g. pain intensity). Univariate analysis was conducted by stratifying on type of pain (acute or chronic), then stratifying on gender (men vs. women) and age (younger vs. older). Thea priorialpha level was 0.05.ResultsA total of 366 pharmacists completed the questionnaire, 212 with acute pain (average age=44±12.1; 36% men) and 154 with chronic pain (average age=53±14.0; 48% men). The chronic pain group reported substantially higher levels of pain before treatment, level of post-treatment pain, level of pain at which sleep was possible, and goal pain levels (effect sizes [ES’s]=0.37–0.61). The chronic pain group were substantially more likely to use prescription non-steroidal anti-inflammatory medications (NSAIDS), opioids, and non-prescription pain relievers (ES’s=0.29–0.80), and non-medical strategies (ES’s=0.56–0.77). Participants with chronic pain also were less confident (ES=0.54) and less satisfied (ES=0.52). In contrast, there were no differences within either the acute or chronic pain groups related to gender and outcomes. In the acute pain group, there also were no gender differences related to management strategies. However, younger age in the acute pain group was associated with use of herbal remedies and use of rest. Within the chronic pain group, men were more likely to use NSAIDS and women more likely to use hot/cold packs or massage while older participants were more likely to use massage. Variability in post-treatment level of pain and percent relief was high in all groups (coefficient of variation=25%–100%).ConclusionsThe differences between acute and chronic pain were substantial and included differences in demographic characteristics, pain characteristics, management strategies used, and outcomes. In contrast, few associations between age and gender with either management strategies or outcomes were identified, although the variability was high.ImplicationsWhen managing or researching pain management, acute pain should be differentiated from chronic pain. Because of the substantial variability within the gender and age groups, an individual approach to pain management irrespective of age and gender may be most useful.

Assessing population sustainability and response to fishing in terms of aggregation structure for greenlip abalone (Haliotis laevigata) fishery management

2004 ◽  
Vol 61 (2) ◽  
pp. 247-259 ◽  
Author(s):  
Natalie A Dowling ◽  
Stephen J Hall ◽  
Richard McGarvey
Keyword(s):  
Egg Production ◽  
Fishery Management ◽  
Management Strategies ◽  
South Australia ◽  
Fertilization Success ◽  
Adult Density ◽  
Demographic Feature ◽  
Data Set ◽  
Functional Relationships ◽  
Aggregation Size

The greenlip abalone (Haliotis laevigata) population in Waterloo Bay, South Australia, has undergone collapse and fishery closure twice since 1978. A rich data set, including survey measures of degree of spatial aggregation, has been gathered over that time and provides a unique opportunity to identify factors accounting for persistence or collapse, an issue that is of significance to abalone fisheries worldwide. Statistical analyses of fishery and survey data were undertaken to infer functional relationships between catch, effort, recruitment, adult density, and extent of aggregation. Catch rates were hyperstable, an observation consistent with the targeting of large aggregations. Statistical analysis of recruitment showed a significant year effect, implying an environmental signal, and suggested that aggregation size impacts fertilization success. Aggregation size grew under closure, suggesting an impact of fishing on this demographic feature. Aggregative behaviour appears to be critical for subpopulation sustainability. Fishery collapse may be triggered by depletion of larger abalone aggregations by heavy fishing, resulting in declines in fertilized egg production. When heavy fishing coincides with unfavourable environmental conditions, recruitment may be insufficient to sustain the subpopulation. If aggregation is similarly critical for other subpopulations, management strategies could be adapted according to the extent of aggregation in each subpopulation.

scholarly journals Comparison of Strategies to Manage Stress Considering to Selected Socio-demographic Characteristics of Employees

2018 ◽  
Vol 26 (2) ◽  
pp. 130-136
Author(s):  
Tatiana Lorincová
Keyword(s):  
Gender Differences ◽  
Standard Deviation ◽  
Stress Management ◽  
Management Strategies ◽  
Demographic Characteristics ◽  
T Test ◽  
Brief Cope ◽  
Common Strategy ◽  
Religiosity And Spirituality ◽  
The Individual

The presented paper deals with the analysis of selected stress management strategies considering to gender and position in organization in which individual employees work. The aim of the paper is to compare the ways of managing and processing the stressful situations, as well as their variability with regard to the group of respondents, their inclusion in the organization (manager or executive employee) and the size of organization (small and medium organization). The research was conducted by using two methodologies, namely Brief COPE from Carver (1997) and SVF 78 by Janke and Erdmann (2003). The research sample consisted of 130 respondents aged 19 to 63 (mean age 40.38 with a standard deviation of 6.73), namely 53.8% of males and 47.2% of women. The research sample consisted of executive employees (49.2%) and managers (50.8%) working in a small and medium-sized organization. The research results were analyzed by t-test for two independent samples, namely the individual stress management strategies were compared. We found statistically significant differences in the level of control of the situation, self-blaming, POZ 1 and NEG among executive employees and managers. At the level of perseverance, self-blaming, religiosity and spirituality, and NEG we found statistically significant gender differences. Comparison of employees working in a small and medium-sized organization has demonstrated the existence of statistically significant differences in levels of underestimation, negation, ventilation and self-blaming. The most common strategy of stress management was the strategy of self-blaming, given the analyzed socio-demographic characteristics of the respondents.

scholarly journals Fish assemblages in a coastal bay adjacent to a network of marine protected areas in southern Brazil

2016 ◽  
Vol 64 (3) ◽  
pp. 295-308 ◽  
Author(s):  
André Pereira Cattani ◽  
Fábio Gonçalves Daura Jorge ◽  
Gisela Costa Ribeiro ◽  
Leonardo Liberali Wedekin ◽  
Paulo César de Azevedo Simões Lopes ◽  
...  
Keyword(s):  
Protected Areas ◽  
Marine Protected Areas ◽  
Fish Assemblage ◽  
Fish Assemblages ◽  
Fish Fauna ◽  
Abundant Species ◽  
Environmental Data ◽  
Fish Assemblage Structure ◽  
Principal Coordinates ◽  
Coastal Bay

Abstract Baía Norte (North Bay) in Santa Catarina State is considered a typical coastal bay and is surrounded by a network of Marine Protected Areas. The objectives of this study were to describe the composition of the demersal fish assemblage, identify seasonal and spatial structures on a fine scale and evaluate the role of habitat descriptors and abiotic variables affecting the fish assemblage structure. Seasonal samplings were conducted in 2005, using bottom trawls in six pre-established areas in Baía Norte in summer, fall, winter and spring. Simultaneously with each trawl, environmental data were collected with a multiparameter probe. Temporal and spatial differences in fish abundance were tested by a PERMANOVA. To illustratethe differences detected graphically we ran a canonical analysis of principal coordinates (CAP). The influence of environmental variables on the fish fauna was evaluated using a Distant Based Linear Model (DistLM) with Akaike's information criterion (AIC). A total of 9,888 specimens, distributed in 27 families and 62 species, were collected. Citharichthys spilopterus was the most abundant species. PERMANOVA detected differences for abundance between seasons, areas and interaction among all the factors. The DISTLM selected temperature and pH. The results highlight seasonality as an important factor in the structuring of fish fauna of the study place.

Observations on interactions between indigenous Galaxiidae and introduced Salmonidae in the Lake Eucumbene catchment, New South Wales

1976 ◽  
Vol 27 (4) ◽  
pp. 551 ◽  
Author(s):  
RDJ Tilzey
Keyword(s):  
Population Structure ◽  
Catchment Area ◽  
Salmo Trutta ◽  
Historical Data ◽  
New South ◽  
New South Wales ◽  
Fish Fauna ◽  
South Wales ◽  
The One ◽  
Natural Barrier

The fish fauna of all major streams within the Lake Eucumbene catchment in south-eastern New South Wales was sampled by electrofishing or poisoning with rotenone. Galaxias coxii was found in only four, and G. olidus in only one other of the 27 streams sampled whereas the introduced salmonids (Salmo trutta or S. gairdneri, or both) occurred in all but the stream containing G. olidus. Values for galaxiid biomass were low in comparison with those for trout where both occurred together. Sampling in 1971 and 1974 in the one stream observed in 1971 to contain only G. olidus spanned an invasion by S. gairdneri and by 1974 the galaxiid species had completely disappeared below a natural barrier to trout, but above this barrier the biomass and population structure of G. olidus had not changed greatly compared to the 1971 values. This indicated that the presence of S. gairdneri was the sole environmental factor causing galaxiid disappearance below the barrier. Historical data for the catchment area suggested that the introduction and subsequent success of trout are primarily responsible for the present, much fragmented galaxiid distribution.

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