Sediment “whips”: Amphipod artefacts from the rocky sublittoral in Britain

Moore, P. G.; Earll, R.

doi:10.1016/0022-0981(85)90117-0

Cited by 16 publications

(21 citation statements)

References 5 publications

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“…The massive presence of the Podoceridae is possibly due to that of shell debris capable of supporting bryozoans and hydroids. Sediment 'whips', reported attached to hydroids by Moore & Earll (1985), serve as vantage points to the Podoceridae for suspension feeding. The Podoceridae are also known to live on algae, bryozoans, polychaete tubes, and sea urchin spines (Laubitz, 1977).…”

Section: Representation Of Gammaridean Trophic Guilds and Possible Comentioning

confidence: 99%

“…The Podoceridae are also known to live on algae, bryozoans, polychaete tubes, and sea urchin spines (Laubitz, 1977). Although active construction has not been observed, there is strong evidence that the Podoceridae build the whips themselves (Moore & Earll, 1985). We do not know whether the Baie des Chaleurs or the Lower St. Lawrence Estuary sediments support epifauna of a similar nature and abundance but the Podoceridae are definitely less successful, showing medium rank in the Lower St. Lawrence Estuary (Besner, 1976) and negligible frequency of occurrence in the Baie des Chaleurs (Sainte-Marie & Brunel, 1985).…”

Section: Representation Of Gammaridean Trophic Guilds and Possible Comentioning

confidence: 99%

“…These conclusions on Podoceridae are supported by our results on caprellids (Table 6). They are known to occupy a niche similar to that of the Podoceridae (Moore & Earll, 1985) and are also very successful in the Bay of Fundy, while they are considered rare at the Lower St. Lawrence Estuary (Besner, 1976) and Chaleurs (Brunel, 1968) stations. It can be said that the suspension-feeding trophic guild as a whole, including the Podoceridae but also stronger swimming forms, such as the Melphidippidae, is more successful in the Bay of Fundy than in the Lower St. Lawrence Estuary or the Baie des Chaleurs.…”

Section: Representation Of Gammaridean Trophic Guilds and Possible Comentioning

confidence: 99%

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Structure of a suprabenthic shelf sub-community of gammaridean Amphipoda in the Bay of Fundy compared with similar sub-communities in the Gulf of St. Lawrence

1991

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A conceptual model of the adaptive structure of offshore bottom communities through seasonal patterns of pelagic-benthic coupling is tested by comparing the success of suprabenthic, shelf sub-communities of gammarideans selected in three areas differing in trophic status: the eutrophic Baie des Chaleurs and two oligotrophic ecosystems, the Bay of Fundy and the Lower St. Lawrence Estuary.The relative amount of primary production appears to affect both species richness and total density. It is higher in the very productive Baie des Chaleurs, implying tightly coupled pelagic-benthic links. In the Bay of Fundy, gammaridean density, although lower than in the Baie des Chaleurs, is higher than in the Lower St. Lawrence Estuary, but it appears to be characterized by smaller size at maturity or selection of smaller species of the same taxa. The Baie des Chaleurs community may be more biologically accommodated than those of the Lower St. Lawrence Estuary and the Bay of Fundy, which are physically less stable. In the latter, all trophic guilds appear less abundant, but scavengers-predators retain a similar relative success in all three ecosystems, presumably from being more remote from the seasonal pelagic food supply in the trophic chain. In both oligotrophic systems, slope species compete efficiently with shelf species in their preferred depth zone, presumably because of their natural adaptation to food scarcity.The amplitude of vertical migrations by suprabenthic gammarideans appears to be higher in the Bale des Chaleurs, possibly to favor horizontal redistribution to new patches of 'first-quality food' on the very stable and homogeneous mud basin of the Baie. Trends of seasonal abundance for ten gammaridean species in the Bay of Fundy confirm the reality of swimming guilds previously observed in the Baie des Chaleurs.

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Section: Representation Of Gammaridean Trophic Guilds and Possible Comentioning

confidence: 99%

Section: Representation Of Gammaridean Trophic Guilds and Possible Comentioning

confidence: 99%

Section: Representation Of Gammaridean Trophic Guilds and Possible Comentioning

confidence: 99%

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Structure of a suprabenthic shelf sub-community of gammaridean Amphipoda in the Bay of Fundy compared with similar sub-communities in the Gulf of St. Lawrence

1991

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“…The presence of glandular pereopods 3-4 and very long, slender pereopods 5- suggests that they are filter-feeders and stem-builders. Such behaviour, including self-constructed stems has been described in various coastal species including Dulichia falcata (Spence Bate, 1857), D. rhabdoplastis McCloskey, 1970, Dyopedos monacanthus (Metzger, 1875), D. porrectus Spence Bate, 1857 (see McCloskey 1970, Laubitz 1977, 1979, Moore and Earll 1985, Mattson and Cedhagen 1989, Meyer-Rochow et al 1991, Thiel 1997, 1998), and Dulichiopsis dianae Corbari & Sorbe, 2017.…”

Section: Resultsmentioning

confidence: 91%

Amphipod family distributions around Iceland

Brix¹,

Lörz²,

Jażdżewska³

et al. 2018

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Amphipod crustaceans were collected at all 55 stations sampled with an epibenthic sledge during two IceAGE expeditions (Icelandic marine Animals: Genetics and Ecology) in 2011 and 2013. In total, 34 amphipod families and three superfamilies were recorded in the samples. Distribution maps are presented for each taxon along with a summary of the regional taxonomy for the group. Statistical analyses based on presence/absence data revealed a pattern of family distributions that correlated with sampling depth. Clustering according to the geographic location of the stations (northernmost North Atlantic Sea and Arctic Ocean) can also be observed. IceAGE data for the Amphilochidae and Oedicerotidae were analysed on species level; in case of the Amphilochidae they were compared to the findings from a previous Icelandic benthic survey, BIOICE (Benthic Invertebrates of Icelandic waters), which also identified a high abundance of amphipod fauna.

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“…Amphipods build masts on different substrates in various biotopes. Dulichia rhabdoplastis, McCloskey, 1970 build masts on the spines of sea urchins; Dyopedos monacantha (Metzger, 1875) prefer soft bottoms; whereas Dyopedos porrectus Bate, 1857 typically live on hard bottoms and associate with hydroids (McCloskey, 1970;Moore and Earll, 1985;Mattson and Cedhagen, 1989;Thiel, 1998b). In certain biotopes, mastbuilding amphipods are abundant; the density of Dyopedos monacantha reaches more than 3000 individuals per square metre (Thiel, 1998b) while that of Dyopedos bispinis masts in the White Sea can exceed 2000 per square metre (Zhadan et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae)

Neretin

Zhadan

Tzetlin

2017

CTOZ

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In the present study, we investigated the biology of Dyopedos bispinis, a mast-building amphipod that is abundant near the N. Pertsov White Sea Biological Station. To examine the peculiarities of mast building in Dyopedos bispinis, we studied the social structure of individuals inhabiting the masts and identified the preferred substrata through underwater photography and direct observations, characterized the internal and external structures of the masts, and studied the ultrastructure of pereopodal silk glands using scanning and transmission electron microscopy (SEM and TEM, respectively). The most frequent substrata for mast building are other fouling organisms, including hydroids, bryozoans, ascidians and sponges. As in other corophiids, each Dyopedos bispinis mast represents the territory of one female and, occasionally, one male, but unique collective masts occupied by three or more (up to 23) adults were also observed. Masts comprise one or 2-4 central cylinders and a laminated cortex that contains detritus and amphipod silk layers. The pereopodal glandular complex of Dyopedos bispinis is composed of two distinct gland groups, proximal and distal, in each pereopod 3-4, and ducts in the glandular complex lead into a common chamber in the dactylus. The proximal glands are multicellular; their secretory cells are uninuclear, unlike in certain other amphipods; and the cell membrane is deeply invaginated. The invaginations are filled with extensions of the cytoplasm of lining cells, but the origin of the lining is unclear. Axon terminals were observed adjacent to the secretory cells, and it is assumed that these axons regulate amphipod silk glands. The proximal silk glands of Dyopedos bispinis have similarities with the lobed and rosette glands of isopods, but they have strongly elongated forms. We refer to these glands as pseudotubular glands. Such glands are rarely observed in Crustacea and have only been described in silk-producing pereopodal systems of marine Peracarida and in the antenna of terrestrial Malacostraca.

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Sediment “whips”: Amphipod artefacts from the rocky sublittoral in Britain

Cited by 16 publications

References 5 publications

Structure of a suprabenthic shelf sub-community of gammaridean Amphipoda in the Bay of Fundy compared with similar sub-communities in the Gulf of St. Lawrence

Structure of a suprabenthic shelf sub-community of gammaridean Amphipoda in the Bay of Fundy compared with similar sub-communities in the Gulf of St. Lawrence

Amphipod family distributions around Iceland

Aspects of mast building and the fine structure of “amphipod silk” glands in Dyopedos bispinis (Amphipoda, Dulichiidae)

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