Relations Between Metabolism and Morphogenesis During Regeneration in Tubifex Tubifex I

Anderson, Jane Collier

doi:10.2307/1538303

Cited by 12 publications

(6 citation statements)

References 20 publications

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“…Indeed, the increased density of worms resulted in the formation of a larger ball, leading to oxygen transmission and the respiration of the worms was hindered in the middle of the ball. This effect has been reported by previous investigators [39] , [40] , who found that less oxygen was consumed by the animals if they formed a ball. Wei et al [41] have even reported that the quality of the effluent could be worse when the worm density was higher.…”

Section: Resultssupporting

confidence: 87%

The Effects of Operational Conditions on the Respiration Rate of Tubificidae

et al. 2013

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Tubificidae is often used in the wastewater treatment systems to minimize the sludge production because it can be fed on the activated sludge. The process conditions have effect on the growth, reproduction, and sludge reduction efficiency of Tubificidae. The effects of the water quality, density of worms, pH, temperature and dissolved oxygen (DO) concentration on the respiration rate of Tubificidae were investigated to determine the optimal conditions for the growth and metabolism of the worms and reveal the mechanisms involving the efficient sludge reduction in terms of these conditions. It was observed that the respiration rate was highest in the water discharged from an ecosystem that included symbiotic Tubificidae and microbes and was lowest in distilled water. Considering density of the worms, the highest rate was 81.72±5.12 mg O2/g(dry weight)·h·L with 0.25 g (wet weight) of worms in 1 L test flask. The maximum Tubificidae respiration rate was observed at a pH of 8.0±0.05, a rate that was more than twice as high as those observed at other pH values. The respiration rate increased in the temperature range of ∼8°C–22°C, whereas the rate declined in the temperature range of ∼22°C–30°C. The respiration rate of Tubificidae was very high for DO range of ∼3.5–4.5 mg/L, and the rates were relatively low for out of this DO range. The results of this study revealed the process conditions which influenced the growth, and reproduction of Tubificidae and sludge reduction at a microscopic level, which could be a theoretical basis for the cultivation and application of Tubificidae in wastewater treatment plants.

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Section: Resultssupporting

confidence: 87%

The Effects of Operational Conditions on the Respiration Rate of Tubificidae

et al. 2013

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“…During the period in regeneration before "later differentiation" appears, oxygen consumption was found to be only slightly, if at all, above normal (Collier, 1947). However, these worms lost weight almost twice as rapidly as controls, and this suggested an energetic cost of localization which was not reflected in oxygen consumption.…”

Section: Discussionmentioning

confidence: 83%

“…Metabolism may be fractionated by means of agents of which the effects on particular enzyme systems are reasonably well known and the relation of the activity of such systems to morphogenesis may then be tested. In the annelid, Tubifc.r tubijcx, morphogenesis during posterior regeneration may be measured fractionally and "rate of localization," "rate of early differentiation," and "rate of later differentiation" expressed quantitatively (Collier, 1947). It was found that oxygen consumption and loss of weight by SUMMARY 1.…”

mentioning

confidence: 99%

Relations Between Metabolism and Morphogenesis During Regeneration in Tubifex Tubifex. Ii

ANDERSON¹

1956

The Biological Bulletin

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Analysis of the relations between metabolism and morphogenesis requires that each set of processes be separated into component parts. Metabolism may be fractionated by means of agents of which the effects on particular enzyme systems are reasonably well known and the relation of the activity of such systems to morphogenesis may then be tested. In the annelid, Tubifc.r tubijcx, morphogenesis during posterior regeneration may be measured fractionally and "rate of localization," "rate of early differentiation," and "rate of later differentiation" expressed quantitatively (Collier, 1947). It was found that oxygen consumption and loss of weight by SUMMARY 1. Continuous exposure of regenerating Tubifc.r tubife.r, Mull, to cyanide has been found to affect "rate of localization" without affecting the ultimate extent or perfection of localization or of other morphogenetic processes.2. Continuous exposure to iodoacetate has been found to increase "rate of later differentiation" without having other effects on regeneration.

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“…For example, the timing of increase varies substantially. Ardia et al (2012) report a significant increase in metabolic rate within hours in insects, whereas Hu et al (2014) report the first significant increase several days after injury in brittlestars, and Collier (1947) reports no significant increase until approximately 2 weeks post-injury in the annelid Tubifex tubifex. These increases occur at different relative stages of the post-injury response, including regeneration, and so absolute comparisons of the timing of metabolic shifts are not appropriate among species.…”

Section: (A) Metabolismmentioning

confidence: 99%

Integrative biology of injury in animals

Rennolds

Bely

2022

Biological Reviews

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Mechanical injury is a prevalent challenge in the lives of animals with myriad potential consequences for organisms, including reduced fitness and death. Research on animal injury has focused on many aspects, including the frequency and severity of wounding in wild populations, the short‐ and long‐term consequences of injury at different biological scales, and the variation in the response to injury within or among individuals, species, ontogenies, and environmental contexts. However, relevant research is scattered across diverse biological subdisciplines, and the study of the effects of injury has lacked synthesis and coherence. Furthermore, the depth of knowledge across injury biology is highly uneven in terms of scope and taxonomic coverage: much injury research is biomedical in focus, using mammalian model systems and investigating cellular and molecular processes, while research at organismal and higher scales, research that is explicitly comparative, and research on invertebrate and non‐mammalian vertebrate species is less common and often less well integrated into the core body of knowledge about injury. The current state of injury research presents an opportunity to unify conceptually work focusing on a range of relevant questions, to synthesize progress to date, and to identify fruitful avenues for future research. The central aim of this review is to synthesize research concerning the broad range of effects of mechanical injury in animals. We organize reviewed work by four broad and loosely defined levels of biological organization: molecular and cellular effects, physiological and organismal effects, behavioural effects, and ecological and evolutionary effects of injury. Throughout, we highlight the diversity of injury consequences within and among taxonomic groups while emphasizing the gaps in taxonomic coverage, causal understanding, and biological endpoints considered. We additionally discuss the importance of integrating knowledge within and across biological levels, including how initial, localized responses to injury can lead to long‐term consequences at the scale of the individual animal and beyond. We also suggest important avenues for future injury biology research, including distinguishing better between related yet distinct injury phenomena, expanding the subjects of injury research to include a greater variety of species, and testing how intrinsic and extrinsic conditions affect the scope and sensitivity of injury responses. It is our hope that this review will not only strengthen understanding of animal injury but will contribute to building a foundation for a more cohesive field of ‘injury biology’.

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Relations Between Metabolism and Morphogenesis During Regeneration in Tubifex Tubifex I

Cited by 12 publications

References 20 publications

The Effects of Operational Conditions on the Respiration Rate of Tubificidae

The Effects of Operational Conditions on the Respiration Rate of Tubificidae

Relations Between Metabolism and Morphogenesis During Regeneration in Tubifex Tubifex. Ii

Integrative biology of injury in animals

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