Salinity stress responses of a sterile mutant of Ulva pertusa (Ulvales, Chlorophyta)

Kakinuma, Makoto; Kuno, Y.; Amano, Hideomi

doi:10.1111/j.1444-2906.2004.00921.x

Cited by 18 publications

(14 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the effects of oxygen production and nutrient uptake metabolism under rapid changes of temperature and salinity were also reported (Kakinuma et al, 2001(Kakinuma et al, , 2004Lartigue et al, 2003;Fong et al, 1996). These authors have found the optimum growth conditions and the mechanisms of nutrient uptake metabolism of many macroalgae (Taylor et al, 2001;Liu et al, 2000;Liu & Dong, 2001a, b;Tarutani et al, 2004).…”

Section: Introductionmentioning

confidence: 89%

Effects of circadian rhythms of fluctuating temperature on growth and biochemical composition of Ulva pertusa

et al. 2007

View full text Add to dashboard Cite

The marcoalga Ulva pertusa was cultured under (20 ± 2)°C, (20 ± 4)°C, (20 ± 6)°C, (20 ± 8)°C and (20 ± 10)°C circadian rhythms of fluctuating temperature conditions, and constant temperature of 20°C was used as the control. The growth rate of macroalga at (20 ± 2)°C, (20 ± 4)°C and (20 ± 6)°C were significantly higher than that at constant temperature of 20°C, while growth rate at (20 ± 8)°C and (20 ± 10)°C were significantly lower than that at constant temperature of 20°C. The growth rate of macroalga was a quadratic function of the thermal amplitude. Such a growth model can be described by G = b 0 + b 1 (TA) + b 2 (TA) 2 , where G represents the relative growth rate, TA is thermal amplitude in degree Celsius, b 0 is the intercept on the G axis, and b 1 and b 2 are the regression coefficients. The optimal thermal amplitude for the growth of thallus at mean temperature of 20°C was estimated to be ± 3.69°C. Analysis of biochemical composition at the final stages of thaulls growth revealed that diel fluctuating temperature caused various influences (P < 0.05). The content of chlorophyll, protein and total solute carbohydrate at (20 ± 2)°C and (20 ± 4)°C were slightly higher than those at constant temperature of 20°C, however no statistically significant differences were found among them (P > 0.05). While osmolytes (total solute carbohydrate and free proline) at (20 ± 10)°C were significantly higher than that at 20°C (P < 0.05). Therefore, more chlorophyll and carbohydrate production might account for the enhancement in the growth of macroalga at the diel fluctuating temperatures in the present study.

show abstract

Section: Introductionmentioning

confidence: 89%

Effects of circadian rhythms of fluctuating temperature on growth and biochemical composition of Ulva pertusa

et al. 2007

View full text Add to dashboard Cite

show abstract

“…The frequent use of Ulva spp. may be due to their euryhalinity and eurythermy (Msuya and Neori 2002;Kakinuma et al 2004;McAvoy and Klug 2005;Tsutsui et al 2012), which facilitates their application to variable aquaculture environments with a wide range of salinities, and to their widespread availability. The Chaetomorpha sp.…”

Section: Discussionmentioning

confidence: 99%

Co-culture with Chaetomorpha sp. enhanced growth performance and reduced feed conversion ratio of the giant tiger prawn, Penaeus monodon

et al. 2015

View full text Add to dashboard Cite

The increase in global demand for fishery products has led to a fivefold increase in aquaculture production since 1990. Commercial feed is the highest production cost in intensive aquaculture, and residual commercial feed leads to eutrophication; hence it is important to find a low-cost alternative that has less environmental impact. We investigate the use of the filamentous green algae, Chaetomorpha sp., as a raw feed for giant tiger prawns. The giant tiger prawn, Penaeus monodon was grown in monoculture, and in co-culture with Chaetomorpha sp. to investigate the potential benefits of co-culturing. Five 20-day-old giant tiger prawn juveniles were released in 70-L monoculture and co-culture tanks, and the specific growth rate (SGR) and feed conversion ratio (FCR) were measured after 10 weeks. The final mean body weight of co-cultured prawns was approximately 50 % heavier than that of monocultured prawns. The SGR in co-culture tanks was 4.79 ± 0.08 % day -1 , which was higher than that in monoculture tanks (4.14 ± 0.27 % day -1 ). The FCR was 38.9 % lower in co-culture than in monoculture tanks. The protein content of Chaetomorpha sp. obtained from proximate analysis was almost the same or a little lower than other filamentous green seaweeds; however, the Chaetomorpha sp. has higher fiber and gross energy. These results show that Chaetomorpha sp. has potential for reducing feed costs in prawn intensive aquaculture through co-culturing.

show abstract

“…It was reported that the growth rate of Ulva pertusa decreased in approximately 5 PSU in previous experiments (Kakinuma et al . ; Choi et al . ), and our results also indicate that the viability of U. pertusa gradually declined to 57% after 7 days in 5 PSU (Figs b,), while in 0 PSU, the viability dropped to 0% after 3 days (Figs c,).…”

mentioning

confidence: 99%

Comparing the low‐salinity tolerance of Ulva species distributed in different environments

Ichihara

Miyaji

Shimada

2012

Phycological Research

View full text Add to dashboard Cite

Summary The green macroalgal genus Ulva (Ulvales, Ulvophyceae, Chlorophyta) is distributed worldwide from marine to freshwater environments. Comparative analyses of hyposalinity tolerance among marine, brackish, and freshwater Ulva species were performed by fluorescein diacetate viability counts. The subtidal marine species Ulva sp., collected from a depth of 30 m, showed the poorest tolerance to low salinity. This species died in 5 practical salinity units (PSU) artificial seawater or freshwater within 1 day. Its closely related species U. linza L. (an intertidal species) and U. prolifera Müller (a brackish species) showed varying tolerances to low salinity. After 7 days of freshwater exposure, the viability of U. linza L. decreased to approximately 20%, while U. prolifera Müller showed nearly 100% viability. The freshwater species U. limnetica Ichihara et Shimada, not yet found in coastal areas, was highly viable in seawater.

show abstract

Salinity stress responses of a sterile mutant of Ulva pertusa (Ulvales, Chlorophyta)

Cited by 18 publications

References 14 publications

Effects of circadian rhythms of fluctuating temperature on growth and biochemical composition of Ulva pertusa

Effects of circadian rhythms of fluctuating temperature on growth and biochemical composition of Ulva pertusa

Co-culture with Chaetomorpha sp. enhanced growth performance and reduced feed conversion ratio of the giant tiger prawn, Penaeus monodon

Comparing the low‐salinity tolerance of Ulva species distributed in different environments

Contact Info

Product

Resources

About