The effect of salinity on coelomic fluid osmolyte concentration and intracellular water content in Luidia clathrata (Say) (Echinodermata: Asteroidea)

Diehl, Walter J.; Lawrence, John M.

doi:10.1016/0300-9629(84)90718-7

Cited by 28 publications

(26 citation statements)

References 29 publications

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“…In echinoderms, it has been shown that failure of K + and Ca 2+ to be accumulated led to deterioration of metabolic processes, despite cell volume regulation. Tissues of Luidia clathrata and Isostichopus badionotus tended to deteriorate upon exposure to higher salinity but not to lower salinity [27] .…”

Section: Edtamentioning

confidence: 88%

“…Intracellular concentrations of Ca 2+ and K + are critical to metabolic and neuromuscular functions in echinoderms [21] . If, instead, these minerals were bound to EDTA, then deficiencies of these trace ions will adversely affect physiological processes resulting in disease [21,27] . In echinoderms, it has been shown that failure of K + and Ca 2+ to be accumulated led to deterioration of metabolic processes, despite cell volume regulation.…”

Section: Edtamentioning

confidence: 99%

“…Massive cell death results when acute hypertonicity exceeds a certain level. Studies in which osmolality is increased by 300 mosmol/kg H 2 O or more showed that hyperosmolality lead to apoptosis [27,33] . Hypertonicity-dependent apoptosis triggers components of both the intrinsic and extrinsic pathway.…”

Section: Mannitolmentioning

confidence: 99%

See 2 more Smart Citations

Osmotic shock as alternative method to control Acanthaster planci

Rivera-Posada¹,

Owens²

2014

JCLM

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Section: Edtamentioning

confidence: 88%

Section: Edtamentioning

confidence: 99%

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Osmotic shock as alternative method to control Acanthaster planci

Rivera-Posada¹,

Owens²

2014

JCLM

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“…The righting of echinoderms is a basic response that involves considerable neuromuscular coordination (Reese, 1966) and has been used with Luidia clathrata (Ellington and Lawrence, 1974;Diehl and Lawrence, 1984). The use of the food-handling ability of Luidia clathrata as an indication of the functional well-being of the organism is similar to the use of the righting response, but focuses on a more specific behavior and provides insight into a basic component of the nutritional biology of the organism.…”

Section: Discussionmentioning

confidence: 97%

Seasonal effects of temperature and salinity on the organismal activity of the seastarLuidia clathrata(say) (Echinodermata: Asteroidea)

Watts

Lawrence

1986

Marine Behaviour and Physiology

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To cite this article: Stephen A. Watts & J. M. Lawrence (1986) Seasonal effects of temperature and salinity on the organismal activity of the seastar Luidia clathrata (say)The righting response and the ability to manipulate and ingest food were measured in Luidia clathrata to indicate the level of organismal activity. The organismal activity of L. clathrata in Tampa Bay is highest in early summer when high levels of temperature and salinity occur simultaneously. Activity decreases in the late summer despite high temperatures because of a decrease in salinity, and activity remains low in the winter despite high salinities because of a decrease in temperature. L. clathrata does not acclimate to temperature in the laboratory. There is compensatory acclimation of the ability to right in response to decreased salinity, but not in the ability to feed. Both decreased temperature and salinity would cause a decrease in feeding by L. clathrata in the field which would have physiological consequences for the individual.

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“…Although some taxa can tolerate or avoid periods of osmotic stress via physiological or behavioral mechanisms, others are more vulnerable to variation in ambient salinity. For example, sea stars and other echinoderms are generally considered to be stenohaline osmoconformers, which lack the ability to regulate the osmolality and ion content of their perivisceral fluid (Maloeuf 1937;Robertson 1949;Binyon 1972;Prusch & Whoriskey 1976;Prusch 1977;Diehl & Lawrence 1984). As a result, low-salinity events can result in reduced performance and even death (MacGinitie 1939;Stickle & Ahokas 1974;Watts & Lawrence 1990).…”

mentioning

confidence: 99%

Responses to low salinity by the sea star Pisaster ochraceus from high‐ and low‐salinity populations

Held

Harley

2009

Invertebrate Biology

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Abstract. In many coastal environments, variation in salinity and organismal responses to that variation are important determinants of the distribution and abundance of species. This study examined the effects of acute salinity changes on sea stars (Pisaster ochraceus) collected from a high‐salinity site (Bamfield, BC) and a low‐salinity site (Vancouver, BC). Sea stars from both sites were exposed to salinities ranging 15–30 psu. Following a 24‐h exposure, the osmolality, sodium concentrations, and chloride concentrations in the perivisceral fluid all varied directly with salinity and were very close to the treatment salinities in both the Bamfield and Vancouver sea stars. The righting response (measured as an activity coefficient) was salinity dependent, with the lowest activity levels at a salinity of 15 psu. Activity coefficients did not vary between the two source populations. Feeding rates on mussels were strongly salinity dependent, but the salinity pattern was population specific. Bamfield sea stars fed the most at 30 psu, whereas Vancouver sea stars fed the most at 20 psu. High post‐experimental mortalities were observed in Bamfield sea stars that had been exposed to a salinity of 15 psu; no such mortality was observed in Vancouver animals. This study provides evidence that the sea stars from the lower salinity environment had been able to acclimatize or adapt to low‐salinity conditions. However, the results also suggest that there are limits to this tolerance, and that future changes in salinity may have important consequences for marine communities via alteration of keystone predation.

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The effect of salinity on coelomic fluid osmolyte concentration and intracellular water content in Luidia clathrata (Say) (Echinodermata: Asteroidea)

Cited by 28 publications

References 29 publications

Osmotic shock as alternative method to control Acanthaster planci

Osmotic shock as alternative method to control Acanthaster planci

Seasonal effects of temperature and salinity on the organismal activity of the seastarLuidia clathrata(say) (Echinodermata: Asteroidea)

Responses to low salinity by the sea star Pisaster ochraceus from high‐ and low‐salinity populations

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