Regulatory Mechanisms in Biosystems (E-Journal - Dnipro National University)
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Red Carpet Committee Greeting Assistant Secretary of the Navy
No full textThree Red Carpet Committee members Greeting Assistant Secretary of the Nav
A Matador and Bull in a Arena
No full textA Matador and a Bull in a Arena Bull Fight in Mexico as bullfighters watc
Arturo Vasquez with Dr. Roberto and Nifa Bosquez.
No full textArturo Vasquez with Dr. Roberto and Nifa Bosquez
Four Women [Pirate Queens] and two men
No full textFour Women [Pirate Queens] smiling as two men hold an awar
Rosa 'Ingrid Bergman' Red Rose Blooming
No full textClose up of a Rosa 'Ingrid Bergman' Red Rose Blooming and two buds on the same branc
Marine amphipods as a new live prey for ornamental aquaculture: exploring the potential of Parhyale hawaiensis and Elasmopus pectenicrus
No full textMarine amphipods are gaining attention in aquaculture as a natural live food alternative to traditional preys such as brine shrimps (Artemia spp.). The use of Artemia is convenient for the culture of many marine species, but often problematic for some others, such as seahorses and other marine ornamental species. Unlike Artemia, marine amphipods are consumed by fish in their natural environment and show biochemical profiles that better match the nutritional requirements of marine fish, particularly of polyunsaturated fatty acids (PUFA), including eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids. Despite their potentially easy culture, there are no established culture techniques and a deeper knowledge on the reproductive biology, nutritional profiles and culture methodologies is still needed to potentiate the optimization of mass production. The present study assessed, for the first time, the aquaculture potential of Parhyale hawaiensis and Elasmopus pectenicrus, two cosmopolitan marine gammarids (as per traditional schemes of classification) that naturally proliferate in the wild and in aquaculture facilities. For that purpose, aspects of the population and reproductive biology of the species were characterized and then a series of laboratory-scale experiments were conducted to determine amphipod productivity, the time needed to reach sexual maturity by hatchlings (generation time), cannibalism degree, the effects of sex ratio on fecundity and the effects of diet (shrimp diet, plant-based diet and commercial fish diet) on fecundity and juvenile growth. P. hawaiensis, unlike E. pectenicrus, was easily maintained and propagated in laboratory conditions. P. hawaiensis showed a higher total length (9.3 ± 1.3 mm), wet weight (14.4 ± 6.2 mg), dry weight (10.5 ± 4.4 mg), females/males sex ratio (2.24), fecundity (12.8 ± 5.7 embryos per female), and gross energy content (16.71 ± 0.67 kJ g-1) compared to E. pectenicrus (7.9 ± 1.2 mm total length; 8.4 ± 4.3 mg wet weight; 5.7 ± 3.2 mg dry weight; 1.34 females/males sex ratio; 6.5 ± 3.9 embryos per female; 12.86 ± 0.82 kJ g−1 gross energy content). P. hawaiensis juvenile growth showed a small, but significant, reduction by the use of a plant-based diet compared to a commercial shrimp and fish diet; however, fecundity was not affected, supporting the possible use of inexpensive diets to mass produce amphipods as live or frozen food. Possible limitations of P. hawaiensis could be their quite long generation times (50.9 ± 5.8 days) and relatively low fecundity levels (12.8 ± 5.7 embryos per female). With an observed productivity rate of 0.36 ± 0.08 juveniles per amphipod couple per day, P. hawaiensis could become a specialty feed for species that cannot easily transition to a formulated diet such as seahorses and other highly priced marine ornamental species
The relationship between spiritual well-being, burnout, and job satisfaction among mental health professionals working with trauma in community settings
No full textBurnout presents a potential risk to mental health professionals in high-demand work settings. Mental health professionals (MHPs) who work in community settings with traumatized populations are at risk of physical and emotional exhaustion resulting from increased caseloads, management responsibilities, organizational policies and procedures, and limited resources. The current study examines the extent to which the variance in burnout is accounted for by MHPs’ sense of spiritual well-being after controlling for job satisfaction. In addition, the study examines the relationships between spiritual well-being and job satisfaction. The results show that there was a statistically significant relationship between burnout and job satisfaction. There was no correlation between burnout and spiritual well-being. A hierarchical multiple regression analysis was performed to assess the degree to which spiritual well-being and job satisfaction predict levels of burnout, after controlling for job satisfaction. Spiritual well-being did not make a unique contribution when included, explaining 16% of the variance in burnout.Counseling & Educational PsychologyCollege of Education and Human Developmen
Horse driven Hearse and Ambulance
No full textMaxwell P Dunne driving a Horse driven Hearse and Ambulanc