Influence of Temperature on the Growth, Coenosarc Pulsations, and Hydroplasm Movement in the Colonial Hydroid Dynamena pumila (L., 1758)

Dementyev, V. S.; Marfenin, N. N.

doi:10.1134/s2079086419050037

Cited by 8 publications

(12 citation statements)

References 29 publications

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“…Rearing experiments in hydroids have shown that growth rates are also influenced by temperature, although the relationship varies across species. Slower growth of Dynamena pumila and slower stolonal growth of Clava multicornis were observed at increased temperatures (Dementyev & Marfenin, 2019; Kinne & Paffenhöfer, 1966), whereas faster growth at higher temperatures was observed for Bougainvillia sp. (Gili & Hughes, 1995).…”

Section: Discussionmentioning

confidence: 99%

Trait–environment relationships of hydroids (Cnidaria: Hydrozoa) across large spatial and environmental gradients in the Atlantic Ocean

Fernandez

Jaimes‐Becerra

Marques

2023

Global Ecol Biogeogr

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Aim The aim was to test trait–environment relationships in hydroids across large spatial and environmental gradients and to evaluate associations between traits, environmental variables, space and phylogeny. Location Atlantic Ocean and adjacent polar seas. Time period Present day. Major taxa studied Hydrozoa. Methods Trait–environment relationships and their spatial and phylogenetic contexts were assessed in hydroids by using a combination of a fourth‐corner test and extended‐RLQ approach, in a multivariate ordination method that uses five matrices: (1) species across sites, (2) environmental data across sites, (3) traits across species, (4) latitude and longitude for each site, and (5) phylogenetic distance among species. We based our analyses on 3680 records of 431 species distributed at 1440 sites, 16 species traits, nine environmental variables and a phylogenetic tree of the studied species. Results Hydroid traits are significantly correlated with environmental variables and geographical space, and hydroid phylogeny is correlated with the environment and geographical space. More evidently, we observed an increased presence of larger species (taller, more branched, with greater base diameter and polysiphonic) at sites richer in nitrate and silicate, with higher dissolved oxygen, lower temperatures, lower salinities and lower current velocities. The observation of phylogenetically related species with similar traits and distributions corroborates that historical processes interact with the environment in determining community assembly and explaining patterns of distribution of species traits. Main conclusions Several environmental variables combined affect the distribution of hydroid traits, which are also influenced by spatial and historical factors. In the first analysis of its kind for hydrozoans, we have provided an overview of how hydroids are distributed across environments according to their traits and revealed the spatial and phylogenetic components of these trait–environment relationships.

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Section: Discussionmentioning

confidence: 99%

Trait–environment relationships of hydroids (Cnidaria: Hydrozoa) across large spatial and environmental gradients in the Atlantic Ocean

Fernandez

Jaimes‐Becerra

Marques

2023

Global Ecol Biogeogr

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“…New shoots are formed within the top of the stolon but never between shoots. The growth zones are located proximally from the apex of the stolon or shoot at a distance of approximately 0.3 mm from the apical end of the stolon/shoot (apex) [25,26]. This study was carried out on colonies grown from individual shoots.…”

Section: The Morphology Of the Coloniesmentioning

confidence: 99%

“…Water was constantly pumped (300 L/h) through a flow cooler (Resun CL-200). So, in a container with an aquarium, a predetermined temperature of 14-15 • C was maintained, which is optimal for the rapid growth of this species [25]. With the help of a microcompressor, the water in the aquarium was constantly aerated, mainly in order to set it in motion, simulating a flow.…”

Section: The Cultivation Of Coloniesmentioning

confidence: 99%

“…Few studies of this kind have been performed in hydroids, all of which were scattered and gave only a general idea of the reaction of the colonies to a slight increase in water temperature [14][15][16][17][18][19][20][21][22][23][24]. Only recently was a study performed on the instantaneous reaction of the colonial hydroid D. pumila to various temperature increases, and it was found that 25 • C was the limiting temperature at which the hydroid did not die [25].…”

Section: Introductionmentioning

confidence: 99%

“…The most severe exposure conditions were chosen: a rapid and significant change in temperature. Having previously established [25] the upper temperature limit for D. pumila under such extreme conditions in an experiment on the response of the species' growth and stolon pulsations in colonies in the first hours of a sharp change in temperature, in this study, we wanted to determine how stable the cessation of growth and changes in stolon pulsations are within five days. We were also interested in the possibility of restoring the normal life activity of D. pumila with a subsequent decrease in water temperature and the speed of this process.…”

Section: Introductionmentioning

confidence: 99%

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How Tolerant Are Hydroids to Climate-Change-Induced Acute Spikes in Sea Water Temperature? A Case Study of Arctic Dynamena pumila (L., 1758)

Marfenin,

Dementyev,

Nikolaev

2023

Hydrobiology

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The temperature of the water surface layer in the Arctic may increase significantly in the coming decades. To what extent will shallow-water fauna be affected by warming? We investigated this issue using an example of one species of colonial hydroid, Dynamena pumila. We judged its reaction to warming via its pulsation activity and the growth of stolons. Pulsations of the coenosarc in colonial hydroids are a sensitive indicator of the body’s reaction to the influence of environmental factors. We tested the ability of D. pumila colonies to survive and adapt to existing at 25 °C for five days. After raising the temperature from 14 °C to 25 °C, colony growth and the pulsation of stolon growth tips on the first day increased and then decreased during the day. In the following days, the growth pulsations almost ceased, the colonies stopped growing, and their coenosarcs began to exfoliate from their perisarcs. However, by the fourth day, this process slowed down, and the colonies existed in an economy mode of experiencing unfavourable conditions. The thermal shock continued in the experiment for five days. Then, after the temperature dropped from 25 °C to 15–16 °C, all the colonies recovered within five days and continued to grow.

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On the Question of the Length of Hydroplasma Flows in the Colonial Hydroid Dynamena pumila (L., 1758)

Marfenin

Dementyev

2020

Biol Bull Rev

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Influence of Temperature on the Growth, Coenosarc Pulsations, and Hydroplasm Movement in the Colonial Hydroid Dynamena pumila (L., 1758)

Cited by 8 publications

References 29 publications

Trait–environment relationships of hydroids (Cnidaria: Hydrozoa) across large spatial and environmental gradients in the Atlantic Ocean

Trait–environment relationships of hydroids (Cnidaria: Hydrozoa) across large spatial and environmental gradients in the Atlantic Ocean

How Tolerant Are Hydroids to Climate-Change-Induced Acute Spikes in Sea Water Temperature? A Case Study of Arctic Dynamena pumila (L., 1758)

On the Question of the Length of Hydroplasma Flows in the Colonial Hydroid Dynamena pumila (L., 1758)

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