Elevated temperature and CO2 have positive effects on the growth and survival of larval Australasian snapper

In the rapidly changing and challenging environment, the possession of continuous innovation ability is primary for organizations in high-tech industry, which have to constantly apply innovation to maintain and enhance the effectiveness, create corporate value, and pursue organizational excellence so as to promote the competitive advantage for enterprise growth and survival. For organizations toady, work teams are the basic units to complete tasks. A lot of management activities are mostly preceded with teams, relying on the mutual cooperation among members. Besides, team interaction and communication could effectively enhance team performance and organizational performance. Aiming at supervisors and employees of high-tech industry in Fujian Province, total 520 copies of questionnaire are distributed, and 351 valid copies are retrieved, with the retrieval rate 68%. The research results show that 1.team diversity presents positive and significant effects on knowledge sharing, 2.knowledge sharing shows positive and remarkable effects on innovation behavior, and 3.team diversity reveals positive effects on innovation behavior. According to the results, suggestions are proposed, expecting to stimulate team innovation behaviors for high-tech industry applying different value, experience, and professional knowledge of team members.

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Combined effects of ocean acidification and elevated temperature on feeding, growth, and physiological processes of Antarctic krill Euphausia superba

Marine Ecology Progress Series ◽

10.3354/meps13715 ◽

2021 ◽

Vol 665 ◽

pp. 1-18

Author(s):

GK Saba ◽

AB Bockus ◽

CT Shaw ◽

BA Seibel

Keyword(s):

Elevated Temperature ◽

Metabolic Rate ◽

Ambient Temperature ◽

Antarctic Krill ◽

Ph Effect ◽

Euphausia Superba ◽

Low Ph ◽

Interactive Effects ◽

Growth And Survival ◽

Key Species

Antarctic krill Euphausia superba is a key species in the Southern Ocean, where its habitat is projected to undergo continued warming and increases in pCO2. Experiments during 2 summer field seasons at Palmer Station, Antarctica, investigated the independent and interactive effects of elevated temperature and pCO2 (decreased pH) on feeding, growth, acid-base physiology, metabolic rate, and survival of adult Antarctic krill. Ingestion and clearance rates of chlorophyll were depressed under low pH (7.7) compared to ambient pH (8.1) after a 48 h acclimation period, but this difference disappeared after a 21 d acclimation. Growth rates were negligible and frequently negative, but were significantly more negative at high (3°C, -0.03 mm d-1) compared to ambient temperature (0°C, -0.01 mm d-1) with no effect of pH. Modest elevations in tissue total CO2 and tissue pH were apparent at low pH but were short-lived. Metabolic rate increased with temperature but was suppressed at low pH in smaller but not larger krill. Although effects of elevated temperature and/or decreased pH were mostly sublethal, mortality was higher at high temperature/low pH (58%) compared to ambient temperature/pH or ambient temperature/low pH (>90%). This study identified 3 dominant patterns: (1) shorter-term effects were primarily pH-dependent; (2) krill compensated for lower pH relatively quickly; and (3) longer-term effects on krill growth and survival were strongly driven by temperature with little to no pH effect.

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The Dietary Chitosan Positively Modulates the Growth and Survival of Barbonymus gonionotus Fry

Annals of Bangladesh Agriculture ◽

10.3329/aba.v24i1.51934 ◽

2021 ◽

Vol 24 (1) ◽

pp. 41-50

Author(s):

F Islam ◽

SI Paul ◽

TR Das ◽

AK Barman ◽

MA Rahman ◽

...

Keyword(s):

Body Weight ◽

Weight Gain ◽

Growth And Development ◽

Body Weight Gain ◽

Stocking Density ◽

Quality Parameters ◽

Fish Growth ◽

Feed Conversion ◽

Growth And Survival ◽

Positive Effects

The dietary chitosan has been largely used in the supplemental diets of terrestrial animals to improve growth and development. However, there is little information on the roles of dietary chitosan in growth and development of aquatic animals like fishes. Thus, this study aimed at determining the effects of dietary chitosan on growth performances and survival of Barbonymus gonionotus fry. A total of 600 B. gonionotus fry (2.12±0.02 g) were considered for this study. This experiment consisted of four treatments (0, 1, 2 and 3 g Kg-1 formulated feeds) and each treatment had three replications with a stocking density of 50 fry/tank. The dietary chitosan was supplied as 8% of body weight of each fry twice daily for 60 days. Fish fry treated with the dietary chitosan exhibited significant (P < 0.05) improvement in growth (body weight gain, % body weight gain, specific growth rate, and feed conversion ratio) and survival of B. gonionotus in comparison with untreated control. The water quality parameters, such as temperature, pH and dissolved oxygen showed no significant variations, and maintained suitable range throughout the study period for fish growth. Among the treatments, application of 1 g chitosan kg-1 feed showed the highest positive effects on growth and survival of B. gonionotus fry, indicating their potentials for practical application in promoting sustainable aquaculture. Ann. Bangladesh Agric. (2020) 24(1) : 41-50

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Effects of Elevated Temperature and Carbon Dioxide on the Growth and Survival of Larvae and Juveniles of Three Species of Northwest Atlantic Bivalves

PLoS ONE ◽

10.1371/journal.pone.0026941 ◽

2011 ◽

Vol 6 (10) ◽

pp. e26941 ◽

Cited By ~ 143

Author(s):

Stephanie C. Talmage ◽

Christopher J. Gobler

Keyword(s):

Carbon Dioxide ◽

Elevated Temperature ◽

Northwest Atlantic ◽

Growth And Survival ◽

Larvae And Juveniles

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Assessing coral health in Moorea, French Polynesia after a regional die-off of the coral antagonist, Dendropoma maxima

10.7287/peerj.preprints.2692 ◽

2017 ◽

Author(s):

Liam O'Malley

Keyword(s):

Community Structure ◽

Environmental Changes ◽

French Polynesia ◽

Coral Growth ◽

Strong Positive Correlation ◽

Growth And Survival ◽

Positive Correlation ◽

Cascading Effects ◽

Positive Effects ◽

Coral Health

Coral reefs are under pressure from numerous anthropogenic and natural threats. A species of vermetid worm, Dendropoma maxima, has a negative interaction with the corals it lives on. Vermetid worm interactions result in structural homogeneity of reef habitats, reduced coral growth, and increased coral death. Dendropoma maxima and corals have a naturally evolved competitive relationship. Therefore, it is inherent that removal of D. maxima from the environment would alleviate stress to coral associated with vermetid worm activity and lead to increased coral growth and survival. A 2015 die-off of D. maxima in French Polynesia is likely to have had direct positive effects to coral and cascading effects on reef community structure. The aim of this investigation was to contribute to the understanding of vermetid worm and coral interactions by quantifying the extent of stress on corals under reduced vermetid worm densities. This study measured D. maxima size and abundance on several coral types and assessed Porites coral health by the presence of pink lesions and growth along edges of coral. Surveys of D. maxima size and Porites coral health occurred at Temae Reef, Moorea in October and November 2016. Live D. maxima were less than half the size of dead D. maxima. Average size of live D. maxima was different between Porites coral and dead coral substrates and between Top or Side positions. There was a strong positive correlation between number of live D. maxima and number of lesions on Porites coral and positive correlation between live D. maxima and percent of coral death. A positive but insignificant correlation between number of live D. maxima and length of new growth was observed. The die-off of D. maxima in 2015 appears to have positively impacted coral health and the results are important to understanding shifts in community structure and ecological health, especially as environmental changes become more frequent in the future.

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Assessing coral health in Moorea, French Polynesia after a regional die-off of the coral antagonist, Dendropoma maxima

10.7287/peerj.preprints.2692v1 ◽

2017 ◽

Author(s):

Liam O'Malley

Keyword(s):

Community Structure ◽

Environmental Changes ◽

French Polynesia ◽

Coral Growth ◽

Strong Positive Correlation ◽

Growth And Survival ◽

Positive Correlation ◽

Cascading Effects ◽

Positive Effects ◽

Coral Health

Coral reefs are under pressure from numerous anthropogenic and natural threats. A species of vermetid worm, Dendropoma maxima, has a negative interaction with the corals it lives on. Vermetid worm interactions result in structural homogeneity of reef habitats, reduced coral growth, and increased coral death. Dendropoma maxima and corals have a naturally evolved competitive relationship. Therefore, it is inherent that removal of D. maxima from the environment would alleviate stress to coral associated with vermetid worm activity and lead to increased coral growth and survival. A 2015 die-off of D. maxima in French Polynesia is likely to have had direct positive effects to coral and cascading effects on reef community structure. The aim of this investigation was to contribute to the understanding of vermetid worm and coral interactions by quantifying the extent of stress on corals under reduced vermetid worm densities. This study measured D. maxima size and abundance on several coral types and assessed Porites coral health by the presence of pink lesions and growth along edges of coral. Surveys of D. maxima size and Porites coral health occurred at Temae Reef, Moorea in October and November 2016. Live D. maxima were less than half the size of dead D. maxima. Average size of live D. maxima was different between Porites coral and dead coral substrates and between Top or Side positions. There was a strong positive correlation between number of live D. maxima and number of lesions on Porites coral and positive correlation between live D. maxima and percent of coral death. A positive but insignificant correlation between number of live D. maxima and length of new growth was observed. The die-off of D. maxima in 2015 appears to have positively impacted coral health and the results are important to understanding shifts in community structure and ecological health, especially as environmental changes become more frequent in the future.

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Survival of Salmonella during Production of Partially Sprouted Pumpkin, Sunflower, and Chia Seeds Dried for Direct Consumption

Journal of Food Protection ◽

10.4315/0362-028x.jfp-17-318 ◽

2018 ◽

Vol 81 (4) ◽

pp. 520-527 ◽

Cited By ~ 1

Author(s):

SUSANNE E. KELLER ◽

NATHAN M. ANDERSON ◽

CAN WANG ◽

STEPHEN J. BURBICK ◽

IAN M. HILDEBRANDT ◽

...

Keyword(s):

Elevated Temperature ◽

Sterile Water ◽

Sunflower Seeds ◽

Seed Type ◽

Growth And Survival ◽

Chia Seed ◽

Sprouted Seeds ◽

Pumpkin Seeds ◽

Transfer Method ◽

And Storage

ABSTRACT Ready-to-eat foods based on dried partially sprouted seeds have been associated with foodborne salmonellosis. Whereas research has focused on the potential for Salmonella initially present in or on seeds to grow and survive during fresh sprout production, little is known about the potential for growth and survival of Salmonella associated with seeds that have been partially sprouted and dried. The goal of this study was to determine the growth of Salmonella during soaking for partial germination of pumpkin, sunflower, and chia seeds and subsequent survival during drying and storage. Pumpkin, sunflower, and chia seeds were inoculated with a four-serotype Salmonella cocktail by the dry transfer method and were soaked in sterile water at 25 or 37°C for 24 h. During the soaking period, Salmonella exhibited growth rates of 0.37 ± 0.26, 0.27 ± 0.12, and 0.45 ± 0.19 log CFU/h at 25°C and 0.94 ± 0.44, 1.04 ± 0.84, and 0.73 ± 0.36 log CFU/h at 37°C for chia, pumpkin, and sunflower seeds, respectively. Soaked seeds were drained and dried at 25, 51, and 60°C. Drying resulted in >5 log CFU/g loss at both 51 and 60°C and ∼3 log CFU/g loss at 25°C on partially sprouted pumpkin and sunflower seeds. There was no decrease in Salmonella during drying of chia seeds at 25°C, and only drying at 60°C provided losses >5 log CFU/g. Dried seeds were stored at 37 and 45°C at 15 and 76% relative humidity (RH) levels. The combination of temperature and RH exerted a stronger effect than either factor alone, such that rates at which Salmonella decreased generally followed this order: 37°C at 15% RH < 45°C at 15% RH < 37°C at 76% RH < 45°C at 76% RH for all seeds tested. Rates differed based on seed type, with chia seeds and chia seed powder having the smallest rate of Salmonella decrease, followed by sunflower and pumpkin seeds. Drying at higher temperatures (50 and 61°C) or storing at elevated temperature and humidity (45°C and 76% RH) resulted in significantly different rates of Salmonella decrease.

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Enhancement of growth performance and hematological changes in rainbow trout (Onchorhynchus mykiss) alevins fed with Bifidobacterium bacteria

Journal of Fisheries ◽

10.17017/jfish.v5i1.2017.152 ◽

2017 ◽

Vol 5 (1) ◽

Author(s):

Javad Sahandi ◽

Hojatollah Jafaryan ◽

Mehdi Soltani ◽

Pouneh Ebrahimi

Keyword(s):

Growth Rate ◽

Rainbow Trout ◽

Growth Performance ◽

Feed Conversion ◽

Growth And Survival ◽

Commercial Diet ◽

Positive Effects ◽

Rainbow Trout Oncorhynchus Mykiss ◽

Significant Difference ◽

Hematological Changes

The study of probiotic application as an important rearing strategy was started more than 30 years ago and most of these studies were carried out to increase growth and survival of larvae. Effect of Bifidobacterium animalis PTTC-1631 and B. lactis PTTC-1736 as probiotic supplement has been studied on growth performance and hematological changes on rainbow trout, Oncorhynchus mykiss alevins with initial body weight of 0.583 ± 0.197 g. The commercial diet was supplemented with graded levels of probiotics (1×107, 2×107 and 3×107 CFU g-1 dry feed) to obtain 3 sets of experimental diets (T1, T2, andT3 respectively) and fed four times a day for 60 days. T1 alevin showed the best growth performance in terms of specific growth rate, weight gain, metabolic growth rate, feed conversion ratio and survival rate. The highest red and white blood cell concentrations were noticed in fish fed T2 and T3 diets, respectively, no significant difference was observed in hemoglobin content. T1 showed the significant elevation of serum biochemical parameters and reduction of cortisol level. The results of present study might suggest likely positive effects of probiotic supplements with concentration of 1×107 CFU g-1 dry feed on growth and hematology on rainbow trout alevins.

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Post-settlement abundance, condition, and survival in a climate-stressed population of Pacific cod

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/cjfas-2021-0224 ◽

2021 ◽

Author(s):

Alisa A. Abookire ◽

Michael A. Litzow ◽

Michael J. Malick ◽

Benjamin Jeffrey Laurel

Keyword(s):

Survival Data ◽

Gulf Of Alaska ◽

Early Summer ◽

Pacific Cod ◽

Larval Phase ◽

Growth And Survival ◽

Positive Effects ◽

Juvenile Abundance ◽

Spring Temperatures ◽

Overwintering Survival

The Pacific cod (Gadus macrocephalus) fishery recently collapsed in the Gulf of Alaska after a series of marine heatwaves that began in 2014. To gauge the likelihood of population recovery following these extreme warming events, we investigate potential thermal stress on age-0 cohorts through a comprehensive analysis of juvenile cod abundance, condition, growth, and survival data collected from 15 years of beach seine surveys. Abundance was strongly negatively related to ocean temperature during the egg and larval phase (winter/spring), but age-0 cod were larger in the early summer following warm winter/spring temperatures. Body condition indices suggest that warm summers may improve energetic reserves prior to the first winter; however, there was no summer temperature effect on post-settlement growth or survival. Spatial differences in abundance, condition, or growth were not detected, and density-dependent effects were either weak or positive. While the positive effects of increased summer temperatures on juvenile condition may benefit overwintering survival, they cannot compensate for high pre-settlement mortality from warming winter/spring temperatures. We conclude the critical thermal bottleneck for juvenile abundance occurs pre-settlement.

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