Comparative growth and survival of inbred and outbred Penaeus (marsupenaeus) japonicus, reared under controlled environment conditions: indications of inbreeding depression

Aquaculture ◽  
2004 ◽  
Vol 241 (1-4) ◽  
pp. 151-168 ◽  
Author(s):  
Sandra J. Keys ◽  
Peter J. Crocos ◽  
Charis Y. Burridge ◽  
Greg J. Coman ◽  
Gerard P. Davis ◽  
...  
Keyword(s):  
Inbreeding Depression ◽  
Controlled Environment ◽  
Marsupenaeus Japonicus ◽  
Growth And Survival

Inbreeding depression on growth and survival of full-sib family of Manila clam (Ruditapes philippinarum)

2017 ◽  
Vol 16 (1) ◽  
pp. 145-150 ◽  
Author(s):  
Zhongming Huo ◽  
Na Li ◽  
Xuekai Zhang ◽  
Ying Li ◽  
Xiwu Yan ◽  
...  
Keyword(s):  
Inbreeding Depression ◽  
Ruditapes Philippinarum ◽  
Manila Clam ◽  
Growth And Survival

scholarly journals Effects of inbreeding depression on seed production in Scots pine (Pinus sylvestris)

2019 ◽  
Vol 49 (7) ◽  
pp. 854-860 ◽  
Author(s):  
Tim J. Mullin ◽  
Torgny Persson ◽  
Sara Abrahamsson ◽  
Bengt Andersson Gull
Keyword(s):  
Pinus Sylvestris ◽  
Inbreeding Depression ◽  
Scots Pine ◽  
Genetic Load ◽  
Pollen Competition ◽  
Growth And Survival ◽  
Study Materials ◽  
Inbreeding Coefficients ◽  
Future Assessment ◽  
The Impact

Like other outcrossing species, Scots pine (Pinus sylvestris L.) is thought to carry a “genetic load” of deleterious recessive alleles. When these alleles occur as homozygotes in inbred progeny, their expression can give rise to “inbreeding depression”. Although this phenomenon has been studied in several conifer species through selfing, few studies have quantified inbreeding depression in crosses with lower levels of relatedness between parents. We report here on the generation of a set of F3 study materials in Scots pine in which 142 families arose from a mating design among 49 F2 parents, representing nine levels of expected inbreeding coefficients between 0.0 and 0.5, and repeated over two consecutive seasons. Whereas the numbers of extractable seeds were unaffected by inbreeding, the proportion with fully developed embryos was strongly affected. This was expressed as inbreeding depression in the yield of full seeds per cone but not in their mean mass. Levels of germination of these full seeds were affected by inbreeding, but the depression was rather small and only weakly significant. The roles of pollen competition and polyembryony in mitigating the impact of inbreeding depression are discussed. The materials have been outplanted for future assessment of inbreeding depression on growth and survival.

scholarly journals On deleterious mutations in perennials: inbreeding depression, mutation load and life-history evolution

2019 ◽  
Author(s):  
Thomas Lesaffre ◽  
Sylvain Billiard
Keyword(s):  
Population Genetics ◽  
Inbreeding Depression ◽  
Narrow Range ◽  
Life History Evolution ◽  
Survival Strategies ◽  
Life Stages ◽  
Deleterious Mutations ◽  
Mutation Load ◽  
Growth And Survival ◽  
Main Text

ABSTRACTIn Angiosperms, perennials typically present much higher levels of inbreeding depression than annuals. One hypothesis to explain this pattern stems from the observation that inbreeding depression is expressed across multiple life stages in Angiosperms. It posits that increased inbreeding depression in more long-lived species could be explained by differences in the way mutations affect fitness in these species, through the life stages at which they are expressed. In this study, we investigate this hypothesis. We combine a physiological growth model and multilocus population genetics approaches to describe a full genotype-to-phenotype-to-fitness map. We study the behaviour of mutations affecting growth or survival, and explore their consequences in terms of inbreeding depression and mutation load. Although our results only agree with empirical data within a narrow range of conditions, we argue that they may point us towards the type of traits susceptible to underlie inbreeding depression in long-lived species, that is traits under sufficiently strong selection, on which selection decreases sharply as life expectancy increases. Then, we study the role deleterious mutations maintained at mutation-selection balance may play in the coevolution between growth and survival strategies.Description of the manuscriptThe main text of the manuscript, excluding captions and headers, is 5712 words long. There are 4 figures in the main text, numbered from 1 to 4. In the present file, pages 1 to 33 correspond to the main text (including title page, abstract and litterature cited), while the remaining pages (33 to 72) correspond to appendices. There are 5 sections in Appendices, which are all available at the end of the manuscript file. There are 12 figures in Appendices, numbered from S1 to S12.

scholarly journals How do cryptochromes and UVR8 interact in natural and simulated sunlight?

2019 ◽  
Vol 70 (18) ◽  
pp. 4975-4990 ◽  
Author(s):  
Neha Rai ◽  
Susanne Neugart ◽  
Yan Yan ◽  
Fang Wang ◽  
Sari M Siipola ◽  
...  
Keyword(s):  
Gene Expression ◽  
Flavonoid Biosynthesis ◽  
Controlled Environment ◽  
Resistance Locus ◽  
Uv Resistance ◽  
Simulated Sunlight ◽  
Wild Type ◽  
Growth And Survival ◽  
Defective Mutant

AbstractCryptochromes (CRYs) and UV RESISTANCE LOCUS 8 (UVR8) photoreceptors perceive UV-A/blue (315–500 nm) and UV-B (280–315 nm) radiation in plants, respectively. While the roles of CRYs and UVR8 have been studied in separate controlled-environment experiments, little is known about the interaction between these photoreceptors. Here, Arabidopsis wild-type Ler, CRYs and UVR8 photoreceptor mutants (uvr8-2, cry1cry2 and cry1cry2uvr8-2), and a flavonoid biosynthesis-defective mutant (tt4) were grown in a sun simulator. Plants were exposed to filtered radiation for 17 d or for 6 h, to study the effects of blue, UV-A, and UV-B radiation. Both CRYs and UVR8 independently enabled growth and survival of plants under solar levels of UV, while their joint absence was lethal under UV-B. CRYs mediated gene expression under blue light. UVR8 mediated gene expression under UV-B radiation, and in the absence of CRYs, also under UV-A. This negative regulation of UVR8-mediated gene expression by CRYs was also observed for UV-B. The accumulation of flavonoids was also consistent with this interaction between CRYs and UVR8. In conclusion, we provide evidence for an antagonistic interaction between CRYs and UVR8 and a role of UVR8 in UV-A perception.

scholarly journals The effects of a marine photosynthetic bacteria Rhodovulum sulfidophilum on the growth and survival rate of Marsupenaeus japonicus (kuruma shrimp)

2021 ◽  
Vol 3 (2) ◽  
pp. 245-249
Author(s):  
Hitoshi Miyasaka ◽  
◽  
Aoi Koga ◽  
Yusaku Tani ◽  
Ken-ichi Ozaki ◽  
...  
Keyword(s):  
Survival Rate ◽  
Photosynthetic Bacteria ◽  
Photosynthetic Bacterium ◽  
Shrimp Aquaculture ◽  
Marsupenaeus Japonicus ◽  
Feed Conversion ◽  
Growth And Survival ◽  
Rhodovulum Sulfidophilum ◽  
Kuruma Shrimp ◽  
Feed Conversion Rate

The sustainability of the shrimp aquaculture depends largely on disease control and the health status of shrimp. Probiotics, which make shrimps healthier and more resistant to pathogens, are promising countermeasure for shrimp diseases. In this study, the effects of the marine purple non-sulfur photosynthetic bacterium (PNSB) Rhodovulum sulfidophilum on Marsupenaeus japonicus (kuruma shrimp) growth and survival were examined in 177 m2 aquaria (140 tons of water) for 70 days. The shrimp received feed containing 0.01 % fresh weight (106 colony forming unit/g) of R. sulfidophilum cells. The survival rate significantly improved (P < 0.001) (R. sulfidophilum-fed = 81.9 %; control = 71.5 %), the feed conversion rate improved (R. sulfidophilum-fed = 1.83; control = 2.11), and there was no difference in the shrimp average body weight. The approximate bacterial cell cost was $0.003 to $0.005 per 1 kg feed, indicating that the R. sulfidophilum approach is economically feasible and a promising candidate for probiotic bacteria in shrimp aquaculture. Keywords: photosynthetic bacteria, Rhodovulum sulfidophilum, Marsupenaeus japonicus, shrimp, probiotics

scholarly journals Short Communication: Introduction of study domestication of manggabai fish (Glossogobius giuris) in different environment

2018 ◽  
Vol 19 (1) ◽  
pp. 260-264 ◽  
Author(s):  
YUNIARTI KONIYO ◽  
JULIANA JULIANA
Keyword(s):  
Natural Environment ◽  
Short Communication ◽  
Environmental Changes ◽  
Descriptive Analysis ◽  
Controlled Environment ◽  
Growth And Survival ◽  
Artificial Environment ◽  
The Absolute ◽  
The Difference ◽  
Glossogobius Giuris

Koniyo Y, Juliana. 2018. Short Communication: Introduction of study domestication of manggabai fish (Glossogobius giuris) in different environment. Biodiversitas 19: 260-264. Manggabai fish (Glossogobius giuris (Hamilton, 1822) is one of the fish species that have good economic value, so its sustainability needs to be maintained. Manggabai fish population in nature continues to decline; this is due to environmental changes. Environmental changes that occur in nature is very difficult to be controlled so a method is required to preserve the manggabai fish that exist in the natural environment. Domestication is one of the methods used to maintain organisms that lives in a natural environment with an artificial (controlled) environment. This study aims to determine the difference of natural and artificial environment as a basis for conducting domestication on manggabai fish. The research method is an experimental method which is used in the cultivation of fish in natural and artificial environment. Manggabai fish cultivation in the natural environment uses a floating net cage system with volume of 1 m3, while cultivation in a controlled environment uses a pool of 1 m3 of concrete. Manggabai fish uses ± 10 cm of depth of pool with a density of 100 individuals/m3. The study was conducted for 3 months and feeding was only given to cultivation in controlled environment by 20% with a frequency of twice/day. The research variables consist of growth and survival of manggabai fish. The data analysis used descriptive analysis to determine the difference of growth and survival of manggabai fish kept in natural environment and in controlled environment. The results show that there is a difference in the growth and survival of manggabai fish kept in different environments. The highest growth and survival was obtained in the natural environment of KJA by 87%, whereas in the controlled environment, i.e. in the survival pool, it was only 74%. The absolute longest growth and the highest weight growth was obtained in the controlled environment in the pool by 2.07 cm and 4.62 g, whereas in the natural environment in KJA, the growth of the length and the absolute brat of 0.83 cm and 2.33 g. The results showed that the quality of environmental maintenance is a factor that affects the success of manggabai fish domestication.

scholarly journals Effect of Combination Kiambang (Salvinia molesta) and Zeolite on Consentration of Heavy Metal Cadmium (Cd).

2020 ◽  
Vol 7 (2) ◽  
pp. 60
Author(s):  
Siti Nurafifah ◽  
Boedi Setya Rahardja ◽  
Abdul Manan
Keyword(s):  
Heavy Metal ◽  
Biological Treatment ◽  
Low Cost ◽  
Contaminated Water ◽  
Controlled Environment ◽  
Salvinia Molesta ◽  
Growth And Survival ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Kariba Weed

Water is the most important requirement for all organisms, either to humans, plants, animals, and microorganisms. It was caused water function in the growth and survival organisms. Aquaculture is an activity to maintain, raise, and/or breeding fish and harvest their products in a controlled environment. Cultivation was done in a sustainable manner for the benefit.Pollution in water can be caused death of fish is heavy metal cadmium (Cd) pollution. Processing of heavy metal contaminated water is the most simple and low cost is a biological treatment with kariba weed (Salvinia molesta). But the effect of kariba weed to the decline of heavy metal cadmium is not significantly reduced, so that needs to be combined with the zeolite so that the heavy metal cadmium decline more significantly. This reseacrh to determine the effect of the combination kariba weed (Salvinia molesta) and zeolite to the decline of the heavy metal cadmium (Cd). This reseacrh uses a completely randomized design (CRD) with four treatments performed five repetitions, treatment A using 0 g kariba weed and 150 g of zeolite, Treatment B using 50 g kariba weed and 100 g of zeolite, Treatment C using 100 g kariba weed and 50 g of zeolite and treatment D using 150 g kariba weed and 0 g zeolite. The result on this research analize by  ANOVA statistical test (Analisis  of  Variance) to know there was the different between treatments, afterwards, continued by space doubled test Duncan. The result showed combination kariba weed (Salvinia molesta) and zeolite significant effect on decreasing the concentration of heavy metal cadmium (Cd) (F count > F Tabel 0.05). It is evident in this research, and only had one week treated water cadmium (Cd) of 1 ppm concentrations is fall. The averages treatment on decreasing concentration heavy metal cadmium (Cd) was treatment A 98,7%, tretment B 97,1%, treatment C 97,2 % and treatment D 95,8%.

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