LENGTH GROUP AND SPECIES-SPECIFIC GROWTH RESPONSES OF CARNIVOROUS FISH UNDER CHRONIC EXPOSURE OF METALS MIXTURE

To determine the optimal growing substrate pH values for Sedum plants, Sedum album, Sedum reflexum ‘Blue Spruce’, Sedum spurium ‘Dragon’s Blood’, Sedum hybridum ‘Immergrunchen’, and Sedum sexangulare were grown in containers using peatmoss and perlite-based substrates at five target pH levels (i.e., 4.5, 5.5, 6.5, 7.5, and 8.5). Optimal pH levels, calculated from dry weight regression models, were 6.32, 6.43, 5.71, 6.25, and 5.91 for S. album, S. reflexum, S. spurium, S. hybridum, and S. sexangulare, respectively, and 5.95 overall. Sedum spurium dry weight varied the most among pH treatments (i.e., 9.5 times greater at pH 6.3 vs. 8.3), whereas S. reflexum varied the least (i.e., 1.3 times greater at pH 6.3 vs. 4.4), indicating species-specific growth responses to growing substrate pH. These findings identified a narrow range of optimal growing substrate pH levels within a wider pH range tolerated by five Sedum spp. Therefore, by adjusting substrate pH to optimal levels, Sedum growth can be maximized.

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Species-specific growth responses of favositid corals to soft-bottom substrates

Lethaia ◽

10.1111/j.1502-3931.1989.tb01343.x ◽

1989 ◽

Vol 22 (3) ◽

pp. 287-299 ◽

Cited By ~ 16

Author(s):

MICHAEL A. GIBSON ◽

THOMAS W. BROADHEAD

Keyword(s):

Specific Growth ◽

Growth Responses ◽

Soft Bottom ◽

Species Specific

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Species-specific growth-climate responses of Dahurian larch (Larix gmelinii) and Mongolian pine (Pinus sylvestris var. mongolica) in the Greater Khingan Range, northeast China

Dendrochronologia ◽

10.1016/j.dendro.2020.125803 ◽

2021 ◽

Vol 65 ◽

pp. 125803

Author(s):

Wenqing Li ◽

Yuan Jiang ◽

Manyu Dong ◽

Enzai Du ◽

Fang Wu ◽

...

Keyword(s):

Pinus Sylvestris ◽

Northeast China ◽

Specific Growth ◽

Larix Gmelinii ◽

Dahurian Larch ◽

Species Specific ◽

Climate Responses

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A medium, solidified with gellan gum, for determining the Na+ requirement of Vibrio species

Canadian Journal of Microbiology ◽

10.1139/m93-118 ◽

1993 ◽

Vol 39 (8) ◽

pp. 804-808 ◽

Cited By ~ 4

Author(s):

Lisa D. Noble ◽

John A. Gow

Keyword(s):

Marine Bacteria ◽

Solid Medium ◽

Specific Growth ◽

Basal Medium ◽

Gellan Gum ◽

Growth Responses ◽

Prolonged Incubation ◽

Low Sodium ◽

Growth Requirements ◽

Lag Period

Until now there has not been a satisfactory solid medium for determining the growth responses, to Na+, of marine and other bacteria that have specific growth requirements for Na+. A solid medium would be useful to investigators who would like to take advantage of the efficiency of multipoint inoculation when testing for a Na+ requirement. By using 1% gellan gum (Gel-GroTM) as the solidifying agent a medium was formulated that had a contaminating level of Na+ of slightly less than 2 mM in the basal medium. Two species of Aeromonas, which do not require Na+ for growth, and 31 species of Vibrio, which require Na+, were tested for their growth responses to Na+ on this medium. The Aeromonas strains grew well, within 24 h, at all of the Na+ concentrations tested. Approximately 75% of the Vibrio strains did not grow on the basal medium even after a prolonged incubation period. The remaining species were able to grow on the basal medium, but not without a lag period. These lag periods were as short as 36 h for two of the species and in some instances as long as 312 h. These lag periods were of sufficient duration to determine that Na+ stimulated the growth of the Vibrio strains that were able to grow on the basal medium. Approximately 75% of the strains, representing most species of Vibrio, were able to grow if as little as 25 mM Na+ was present in the medium.Key words: low-sodium medium, Na+ requirement, gellan gum, agar substitute, marine bacteria.

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Survival and growth responses of snakehead fish Channa striata Bloch. juvenile in aerated and unaerated acid sulfate water

Jurnal Akuakultur Indonesia ◽

10.19027/jai.16.1.60-67 ◽

2017 ◽

Vol 16 (1) ◽

pp. 60

Author(s):

, Purnamawati ◽

Daniel Djokosetiyanto ◽

Kukuh Nirmala ◽

Enang Harris ◽

Ridwan Affandi

Keyword(s):

Growth Rate ◽

Blood Glucose ◽

Specific Growth Rate ◽

Feed Efficiency ◽

Specific Growth ◽

Stocking Density ◽

Water Volume ◽

Growth Responses ◽

Acid Sulfate ◽

Channa Striata

ABSTRACT The aim of the research was to analyze survival rate, specific growth rate, albumin, and feed efficiency and physiological (blood glucose, cortisol, dan haemoglobin) responses of snake head fish juvenil that reared at aerated and unaerated of tidal land water have been conducted in the laboratory. Experiments using completely randomized design with aerated and unaerated as a treatment, and each treatment has twelve replications. The snakehead fish juvenil wich length 2.4±0.2 cm and weight of 0.21±0.05 g reared in the aquarium that are size 30×25×35 cm (water volume 25 L) with a stocking density 2 juvenile/L, for 40 days. The fishes were fed with commercial feed with protein content about 40%, feeding two times a day (morning and afternoon) were at satiation. Replacement of water done every two days about 10% of the total water volume in the aquarium. The results showed that unaerated median significantly affected to biometric and physiological response of juvenile of snake head fish. The media un-aerated gives the best results shown by the higher value of survival (92%), specific growth rate (6.73%/ day), feed efficiency (78.22%), protein retention (41.91%), energy retention (30.81%) value of albumin (6.60 g/100 mL) and the haemoglobin (5.58 g/dL), and have the lowest value of cortisol (21.49 ng/L) and blood glucose (43.36 mg/100 mL). Keywords: acid sulfate water, growth rate, aeration, Channa striata ABSTRAK Penelitian ini bertujuan untuk menganalisis respons kelangsungan hidup, pertumbuhan spesifik, albumin, dan efisiensi pakan dan fisiologis (kortisol, glukosa darah, dan hemoglobin) juvenil ikan gabus yang dipelihara dengan dan tanpa aerasi pada media air rawa pasang surut. Penelitian menggunakan rancangan acak lengkap dengan aerasi dan tanpa aerasi sebagai perlakuan, dan masing-masing perlakuan memiliki 12 ulangan. Juvenil ikan gabus berukuran panjang 2,4±0,3 cm dan bobot 0,21±0,03 g dipelihara dalam akuarium 30×25×35 cm (volume 25 L) dengan padat tebar 2 ekor/L, selama 40 hari. Ikan diberi pakan berupa pakan komersial dengan kadar protein ±40%, pemberian pakan dua kali sehari (pagi dan sore) at satiation. Penggantian air dan penyiponan dilakukan dua hari sekali sebanyak 10% dari volume total dalam akuarium. Hasil penelitian menunjukkan bahwa perlakuan tanpa aerasi berpengaruh nyata terhadap respons biometrik dan fisiologis juvenil ikan gabus. Media tanpa aerasi memberikan hasil yang lebih baik ditunjukkan oleh kelangsungan hidup (92%), laju pertumbuhan spesifik (6,73%/ hari), efisiensi pakan (78,22%), retensi protein (41,91%), retensi energi (30,81%), kadar albumin (6,60 g/100 mL), dan hemoglobin (5,85 g/dL) yang lebih tinggi, sedangkan kadar kortisol (219 ng/L) dan glukosa darah (43,36 mg/100 mL) yang terendah. Kata kunci: media sulfat masam, pertumbuhan, aerasi, Channa striata

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Chronic exposure to retroviral vector encoded MGDF (mpl-ligand) induces lineage-specific growth and differentiation of megakaryocytes in mice

Blood ◽

10.1182/blood.v86.11.4025.bloodjournal86114025 ◽

1995 ◽

Vol 86 (11) ◽

pp. 4025-4033 ◽

Cited By ~ 109

Author(s):

XQ Yan ◽

D Lacey ◽

F Fletcher ◽

C Hartley ◽

P McElroy ◽

...

Keyword(s):

Growth And Development ◽

Chronic Exposure ◽

Specific Growth ◽

Extramedullary Hematopoiesis ◽

Retroviral Vector ◽

Platelet Recovery ◽

Development Factor ◽

Systematic Effects ◽

Baseline Levels

Megakaryocyte growth and development factor (MGDF) has recently been identified as a ligand for the c-mpl receptor. Using retroviral- mediated gene transfer, MGDF has been overexpressed in mice to evaluate the systematic effects due to chronic exposure to this growth factor. MGDF overexpressing mice had more rapid platelet recovery than control mice after transplantation. Following this recovery, the platelet levels continued increasing to fourfold to eightfold above normal baseline levels and remained elevated (five-fold above control mice) in these animals, which are alive and well at more than 4 months posttransplantation. Increased megakaryocyte numbers were detected in a number of organs in these mice including bone marrow, spleen, liver, and lymph nodes. Prolonged overexpression of MGDF led to decreased marrow hematopoiesis, especially erythropoiesis, with a shift to extramedullary hematopoiesis in the spleen and liver. All the MGDF overexpressing mice analyzed to date developed myelofibrosis and osteosclerosis, possibly induced by megakaryocyte and platelet produced cytokines. No significant effect on other hematopoietic lineages was seen in the MGDF overexpressing mice, showing that the stimulatory effect of MGDF in vivo is restricted to the megakaryocyte lineage.

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Studies on the Growth Responses of Common Carp (Cyprinus carpio) Progenies Raised Using Different Starter Diets

Journal of Applied Life Sciences International ◽

10.9734/jalsi/2021/v24i730248 ◽

2021 ◽

pp. 17-25

Author(s):

J. O. Ed-Idoko ◽

S. G. Solomon ◽

P. A. Annune ◽

S. I. Ikap ◽

B. T. Iber ◽

...

Keyword(s):

Common Carp ◽

Specific Growth ◽

Egg Yolk ◽

Conversion Ratio ◽

Growth Responses ◽

Feed Conversion ◽

Common Carp Cyprinus Carpio ◽

Percentage Survival ◽

Significant Difference ◽

Percentage Weight

200 fry of carp obtained from induced breeding by stripping were fed three times daily ad libitum with Artemia (DT1), commercial starter diet (DT2), and dried egg yolk (DT3)for 8 weeks. Each treatments were in triplicates in indoor hatchery. At the end of the experiment, the progenies mean weight gained (MWG) was highest in the treatments fed Artemia (3.490±0.015a) as compared to others with significant difference (P<0.05).Mean weight gained (MWG) was highest in the treatments fed Artemia. Percentage weight gain (%WG) and specific growth rate (SGR) had no significant differences (P<0.05). Feed conversion ratio (FCR) was highest (P<0.05) in treatment fed with smashed egg yolk. Feed conversion efficiency (FCE) was highest (P<0.05) in the treatment fed with composed feed. Mortality rate was highest in treatment fed with Artemia, and percentage survival was highest (P<0.05) in treatment fed with composed feed. Percentage jumpers per treatment were highest in Artemia diet. In conclusion, it is imperative that Artemia feed (amidst other starter diets researched on) is most preferable for the optimum growth and development of common carp fry.

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