General ecology of the cassiduloid urchin Cassidulus caribbearum

Gladfelter, William B.

doi:10.1007/bf00395636

Cited by 59 publications

(43 citation statements)

References 15 publications

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“…This is relatively high compared to other burrowing echinoids (Webster 1975, Gladfelter 1978, Magniez & Feral 1988. It also supports the idea that, like Cassidulus spp., A. cordatus is limited to well-aerated substrata (Gladfelter 1978, Freire et al 1992.…”

Section: Discussion Distribution Pattern and Habitat Limitsmentioning

confidence: 80%

“…In general, irregular echinoids, which inhabit fine sediments, excavate specialised respiratory connections with the surface (De Ridder 1982, Kanazawa 1991. The oxygen consumption rate of A. cordatus (Guille & Lasserre 1979, Magniez & Feral 1988) is comparable to that of the urchin Cassidulus canbbearum (Gladfelter 1978). This is relatively high compared to other burrowing echinoids (Webster 1975, Gladfelter 1978, Magniez & Feral 1988.…”

Section: Discussion Distribution Pattern and Habitat Limitsmentioning

confidence: 90%

“…The oxygen consumption rate of A. cordatus (Guille & Lasserre 1979, Magniez & Feral 1988) is comparable to that of the urchin Cassidulus canbbearum (Gladfelter 1978). This is relatively high compared to other burrowing echinoids (Webster 1975, Gladfelter 1978, Magniez & Feral 1988. It also supports the idea that, like Cassidulus spp., A. cordatus is limited to well-aerated substrata (Gladfelter 1978, Freire et al 1992.…”

Section: Discussion Distribution Pattern and Habitat Limitsmentioning

confidence: 90%

“…The burrowing habits of A. cordatus make them invisible for predatory birds. Gastropods are frequently described as important predators for irregular echinoids (Chesher 1969, Dix 1970, Hughes & Hughes 19711981, Gladfelter 1978, McClintock & Marion 1993 but the lack of holes in beached tests indicates that they are not predators of A. cordatus. It is therefore probable that predation does not contribute to the spatial distribution of A. cordatus.…”

Section: Discussion Distribution Pattern and Habitat Limitsmentioning

confidence: 99%

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Pattern of spatial distribution of a brood-protecting schizasterid echinoid, Abatus cordatus, endemic to the Kerguelen Islands

Poulin¹,

Féral²

1995

Mar. Ecol. Prog. Ser.

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ABSTRACT. This study examined the spatial distribution at different geographic scales of the echinoid Abatus cordatus which is endemic to the Kerguelen Islands. Special attention was paid to the nondispersal strategy of the specles. It lives burrowed in the sediment and females brood t h e~r young in dorsal pouches. The dispersal of this species is therefore characterised by a limited mobility among adults and the lack of a free-swimming larval phase. Using SCUBA and dredging, A . cordatus was sampled all around Kerguelen. The spatial distribution from the island scale to the bay scale shows discontinuities at 2 levels: (1) at the island level favourable sectors (princ~pally characterised by jagged coastline with numerous sheltered bays) are separated by linear coastline or swell exposed sectors; (2) at the bay scale A. cordatus lives in high density, isolated demes in shallow water of sheltered bays. A . cordatus was most numerous in sediments that ranged from medium to fine sand. The granulometry of the sed~ment and the lack of predation determine this aggregated spatial distrlbution pattern. Considering that the scale of larval dispersal is the consequence of spatial and temporal habitat structure, the non-dispersal strategy of A. cordatus is associated with a spatially varying but temporally constant habitat as predicted by theoretical models.

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Section: Discussion Distribution Pattern and Habitat Limitsmentioning

confidence: 80%

Section: Discussion Distribution Pattern and Habitat Limitsmentioning

confidence: 90%

Section: Discussion Distribution Pattern and Habitat Limitsmentioning

confidence: 90%

Section: Discussion Distribution Pattern and Habitat Limitsmentioning

confidence: 99%

See 2 more Smart Citations

Pattern of spatial distribution of a brood-protecting schizasterid echinoid, Abatus cordatus, endemic to the Kerguelen Islands

Poulin¹,

Féral²

1995

Mar. Ecol. Prog. Ser.

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“…The asteroids Astropecten polyacanthus and Luidia sarsi are most active at night, and feeding seems to be controlled by ambient light level and food availability (Mori & Matutani 1952). Nocturnal feeding activity cued by light levels has also been recorded in several species of echinoids such as Meoma ventncosa (Chesher 1969), Cassidulus caribbearum (Gladfelter 1978), and Clypeaster rosaceus (Hammond 1982). Nelson & Vance (1979) suggested that while the physical cue is probably light level, nocturnal foraging by the echinoid Centrostephanus coronatus results in the avoidance of diurnal predation.…”

Section: Introductionmentioning

confidence: 92%

Patterns of seasonal and tidal feeding activity in the dendrochirote sea cucumber Cucumaria frondosa (Echinodermata:Holothuroidea) in the Bay of Fundy, Canada

Singh¹,

MacDonald²,

Thomas³

et al. 1999

Mar. Ecol. Prog. Ser.

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ABSTRACT. In situ field observations of the suspension-feeding North Atlantic sea cucumber Cucumaria frondosa from the Bay of Fundy, Canada, conducted over a 3 yr period, revealed a seasonal feeding rhythm. Sea cucun~bers extended their tentacles and began feeding in March/April and ceased feeding in September/October. There were significant relationships between this feeding activity, daylength and the quality of the seston, but not its concentration. Together daylength and chloropigment concentration explained 49% of the variability in the percentage of feeding sea cucumbers. Feeding activity was not significantly correlated with the distinct temperature cycle observed in the study area. Feeding activity was influenced by the state of the tide, water temperature and by daylight during some periods of the feeding season. However, for most of the year these factors appeared not to be important. Sea cucumbers increased their rate of tentacle insertion into the mouth as the quality of the seston increased. The rate of tentacle insertions increased with increasing seston chloropigment concentration but decreased with increasing current speed. These 2 environmental variables explained about 28 % of the variability in tentacle insertion rates. Seston quality is likely the malor environmental variable influencing seasonal feeding behaviour and feeding rate in this species.

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A micromorphological analysis ofBolonia lataMeunier from the Cretaceous of the Neuquén Basin (Patagonia, Argentina): new insights into the tracemaker

Giachetti,

Fernández,

Comerio

et al. 2023

Papers in Palaeontology

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Polychaetes, echinoids and gastropods have been proposed as tracemakers for Bolonia Meunier, an elongate positive epirelief trace fossil characterized by two lobes composed of biserial, subtriangular pads and a mostly heart‐shaped cross‐section. Here, the internal structure and micromorphology of Bolonia are described for the first time using serial thin sections from shallow‐marine Lower Cretaceous intervals of the Agrio Formation (Neuquén Basin, Argentina). In vertical thin sections, a conical structure of variable width extends centrally from the base to the top of the trace. In horizontal thin sections, grains are reoriented and reworked, forming a central zigzag structure. The organic matter and clays form grain aggregates representing the internal structure of individual pads of the trace fossil. The sediment has mostly been reoriented, with grains making up subcircular pods. We interpret the central conical structure as the collapse of the medial zone of the trace fossil, which could have destroyed drain tubes, especially in the absence of early cementation. Studying horizontal thin sections, we reconstruct the diagnostic biserial pads as biserial concave structures. These are interpreted as backfilling structures produced by the aboral and lateral spines of irregular echinoids, which worked together to compact the sediment anteroposteriorly and moved alternatively, explaining the zigzag pattern in the menisci. We propose Spatangoidea or Cassiduloidea (or a closely related group) with a similar burrowing ability and spine movement as tracemakers of these Bolonia specimens.

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General ecology of the cassiduloid urchin Cassidulus caribbearum

Cited by 59 publications

References 15 publications

Pattern of spatial distribution of a brood-protecting schizasterid echinoid, Abatus cordatus, endemic to the Kerguelen Islands

Pattern of spatial distribution of a brood-protecting schizasterid echinoid, Abatus cordatus, endemic to the Kerguelen Islands

Patterns of seasonal and tidal feeding activity in the dendrochirote sea cucumber Cucumaria frondosa (Echinodermata:Holothuroidea) in the Bay of Fundy, Canada

A micromorphological analysis ofBolonia lataMeunier from the Cretaceous of the Neuquén Basin (Patagonia, Argentina): new insights into the tracemaker

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