The larvae of<i>Halocladius (Halocladius) variabilis</i>(Diptera: Chironomidae) from the fouling assemblages on wooden test panels submerged in Trondheimsfjorden

Santhakumaran, L. N.; Sneli, Jon-Arne; Sundnes, Gunnar

doi:10.1080/00364827.1984.10420601

Cited by 3 publications

(5 citation statements)

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“…This is the first record of insects inhabiting sponges in the Mediterranean Sea. While, chironomids are known to inhabit demosponges in freshwater habitats (Gugel, 2001;Roque et al, 2004) and are also known from algae and submerged wood panels in marine environments (Olander and Palmén, 1968;Santhakumaran et al, 1984), to the best of our knowledge this is the first record of an insect inhabiting sponges in a marine environment. Of the Mollusca, Sphenia binghami was the most common.…”

Section: Endobiont Community Compositionmentioning

confidence: 99%

Macrofauna Inhabiting Massive Demosponges From Shallow and Mesophotic Habitats Along the Israeli Mediterranean Coast

et al. 2021

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Sponges have long been considered as “living hotels” due to the great diversity and abundance of other taxonomic groups often found in association with them. Sponges are the dominant components of benthic communities in the Levant Sea; and especially in the recently discovered mesophotic sponge grounds off the coast of Israel. However, almost no data exist regarding their associated macrofauna. The current study sought to identify the macrofauna associated with massive sponges along the Israeli Mediterranean coast; and to compare the role of sponges, as ecosystem engineers, or “living hotels,” in both the shallow-water and mesophotic habitats. Sixty-four massive sponge specimens, from 10 different species, were collected from shallow and mesophotic habitats by SCUBA diving and Remotely Operated Vehicle, respectively. Sponge volume was estimated, specimens were dissected, and the associated macrofauna were identified. Our results reveal that the sponges supported a diverse assemblage of associated macrofauna. A total of 61 associated taxa were found, including species reported for the first time in Israel. A clear, differentiation existed in the structure of the associated assemblage between the two habitats, which is mainly attributed to four species (two polychaetes, a crustacean, and a brittle star). The trophic composition remained stable across the two habitats. No correlation was found between sponge volume and the associated fauna community parameters. The highest richness of associated fauna was found in the mesophotic habitat, where sponge diversity is also higher. In contrast, a greater endobiont abundance and density were recorded in the shallow habitat, where massive sponges may be a limiting factor due to their lower richness and abundance. Our findings emphasize the importance of sponges as ecosystem engineers, and suggest that sponge diversity may be an important factor that contribute to benthic biodiversity in these regions.

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Section: Endobiont Community Compositionmentioning

confidence: 99%

Macrofauna Inhabiting Massive Demosponges From Shallow and Mesophotic Habitats Along the Israeli Mediterranean Coast

et al. 2021

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“…Hirvenoja et al, 2006). These observations, along with Santhakumaran et al (1984) suggested much wider habitat utilization by Halocladius than was assumed by Neumann et al (1997) who placed larval habitat in the mid to high intertidal zones on rocky shores.…”

Section: Introductionmentioning

confidence: 57%

“…It is also possible that during extreme neap tides in August the upper portions of the A. nodosum fronds with their epiphytic clumps may be floating at the surface, and this provides sufficient opportunity for both egg-laying and emergence of (Santhakumaran et al, 1984); however, no explanations were offered here as to the origin of the larvae. The winged nature of Halocladius adults contrasts with the unwinged genera Pontomyia (Edwards, 1926) and Clunio (Haliday, 1855).…”

Section: Discussionmentioning

confidence: 99%

“…This species has been extensively reported from the Holarctic of eastern and northern Canada to northern Europe and the Mediterranean and Black Seas (e.g. Hirvenoja, 1973Hirvenoja, , 1975Santhakumaran et al, 1984;Colbo, 1996;Garbary et al, 2005b;Hirvenoja et al, 2006). The species may be best known as a larval stage from eastern Canada where numerous collections of larvae suggest a commensal and possibly mutualistic symbiosis with marine intertidal algae, in particular Elachista fucicola (Velley) Areschoug (Garbary et al, 2005a(Garbary et al, , 2008.…”

Section: Introductionmentioning

confidence: 98%

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Halocladius variabilis(Diptera: Chironomidae): a marine insect symbiotic with seaweeds from the White Sea, Russia

Tarakhovskaya

Garbary

2009

J. Mar. Biol. Ass.

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The commensal (and possibly mutualistic) symbiosis between the marine chironomid,Halocladius variabilis, and brown algal epiphytes ofFucus vesiculosusandAscophyllum nodosumis described for the first time from Europe, based on field studies from the White Sea, Russia. While the primary host,Elachista fucicola, and the secondary host,A. nodosum, are the same as in eastern Canada where the symbiosis was first described, White Sea populations have a wider range of primary hosts that includePylaiella littoralisandDictyosiphon foeniculaceus. About 64% ofE. fucicolathalli onA. nodosumin the low intertidal zone were colonized. Significantly lower frequencies were found onE. fucicolawhen the latter was epiphytic onF. vesiculosusat the same tidal height or on either secondary host when they were in the subtidal zone. For a given tidal height, or secondary host, frequency ofH. variabiliswas reduced onP. littoralisand further reduced onD. foeniculaceus. We suggest that subtidal populations are colonized by dispersal of larvae from the intertidal zone on to suitable substrata, and that there is limited potential for these individuals to reach the intertidal zone as adults for reproduction.

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“…H. variabilis has not been found in freshwater habitats, but Santhakumaran et al (1984) report, that the larvae were unaffected when placed in distilled water and could withstand salinities as high as 70.5 ‰ when transferred directly from distilled water and 97.0 ‰ after acclimation. According to those authors the larvae were present in Trondheimsfjorden, Norway, among a variety of fouling communities ranging from a thin film of algae and silt to extremely heavy settlements of coelenterates, serpulids, barnacles, bivalves, bryozoans, ascidians, or algae together with a thick layer of silt and faeces of polychaetes, ascidians, and wood-borers.…”

Section: Introductionmentioning

confidence: 98%

The emergence of <i>Halocladius variabilis</i> (Staeger) (Diptera: Chironomidae) in the surroundings of the Tvärminne Biological Station in the northern Baltic Sea

Hirvenoja¹,

Palmén²,

Hirvenoja³

2006

Entomol. Fennica

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The emergence of the marine species Halocladius variabilis (Staeger) in the surroundings of theTvärminne Biological Station (about 6‰S) in the northernBaltic Sea in 1952–1953 is outlined. Most individuals emerged in the submerged funnel traps used in the study from the last half of May to the end of June. The population density in the sites studied varied between 0 and 328 indiv./m2; wide areas had a population density of nearly 10 indiv./m2. No emergence was found in the traps nearest to the buildings of the station, but the highest numbers of the emergence occurred in the most distant sites studied.

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The larvae ofHalocladius (Halocladius) variabilis(Diptera: Chironomidae) from the fouling assemblages on wooden test panels submerged in Trondheimsfjorden

Cited by 3 publications

References 5 publications

Macrofauna Inhabiting Massive Demosponges From Shallow and Mesophotic Habitats Along the Israeli Mediterranean Coast

Macrofauna Inhabiting Massive Demosponges From Shallow and Mesophotic Habitats Along the Israeli Mediterranean Coast

Halocladius variabilis(Diptera: Chironomidae): a marine insect symbiotic with seaweeds from the White Sea, Russia

The emergence of <i>Halocladius variabilis</i> (Staeger) (Diptera: Chironomidae) in the surroundings of the Tvärminne Biological Station in the northern Baltic Sea

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