<i>Upogebia deltaura</i> (Crustacea: Thalassinidea) in Clyde Sea maerl beds, Scotland

Hall-Spencer, Jason M.; Atkinson, R. J. A.

doi:10.1017/s0025315498001039

Cited by 42 publications

(28 citation statements)

References 25 publications

(19 reference statements)

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“…Burrows of U. noronhensis are relatively shallow (maximum length $18 cm) in comparison to other species, such as U. deltaura (maximum length $ 68 cm, Hall-Spencer & Atkinson, 1999), and predators may take advantage. However, this protection is not complete, since U. noronhensis has been detected in the stomach of stingrays (L.C.C., personal observation), £at ¢shes (S.B.…”

Section: Burrow Characteristicsmentioning

confidence: 96%

Burrow morphology and mating behaviour of the thalassinidean shrimp Upogebia noronhensis

2001

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Burrow morphology and mating behaviour of Upogebia noronhensis was studied using resin casting of burrows in the ¢eld and observation of laboratory maintained animals. Burrows of U. noronhensis showed a typical Y-shaped pattern in over 70% of the cases analysed. The remaining 30% comprised U-shaped burrows lacking the lower tunnel (shaft) and burrows with long additional branches projecting from the U portion. Results from animals left to construct burrows in the aquarium closely matched those found in nature. Field and laboratory burrows showed that di¡erent shapes are related to the collapse of the burrow walls, the burrowing activities of other individuals and species, and to the behaviour of the species itself. U-shaped burrows form as a result of the partial construction of the burrow (the U part is always built ¢rst) or owing to the collapse of the shaft. Burrows with additional branches always belonged to males and result from their search for a female with which to reproduce. This process also produced connected burrows. Mating occurs within the female burrow and this is the only time when two animals occupy the same burrow. After mating, the male returns to its burrow and immediately closes the connection. Larvae are planktonic and probably settle in adult areas, since the smallest juvenile burrows were always associated with adult burrows. This may contribute to the high population densities found in the ¢eld ($200 ind m 72 ), which in consequence facilitates fossorial encounters for reproduction. This is the ¢rst time fossorial encounters for reproduction are reported for an Upogebia species and probably for all Thalassinidea.

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Section: Burrow Characteristicsmentioning

confidence: 96%

Burrow morphology and mating behaviour of the thalassinidean shrimp Upogebia noronhensis

2001

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“…Rippeth & Simpson 1996). Hall-Spencer & Atkinson (1999) report that the sediments at this site are coarse (typically 40 -70% gravel in the upper 4 cm), with subsurface sediments composed of c. 50% gravel, c. 31% coarse sand, c. 14% fine sand and c. 4% mud. Bottom water salinity at the site did not vary significantly (31 -33), bottom currents of up to 11 cm s 21 were recorded and temperatures ranged from 6 8C (February 1997) to 14.1 8C (September 1997; Hall-Spencer & Atkinson 1999).…”

Section: Regional Settingmentioning

confidence: 92%

“…Bosence 1979). European maerl beds are of recognized conservation importance (Anon 1992) despite continued threats to these habitats specifically from direct exploitation, eutrophication and towed demersal fishing gear (see Hall-Spencer & Atkinson 1999).…”

mentioning

confidence: 99%

High benthic foraminiferal species counts in a Clyde Sea maerl bed, western Scotland

Austin

Cage

2010

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A preliminary investigation of the occurrence of hard-shelled benthic foraminifera in a sample of maerl (gravels derived from calcareous red seaweed) collected from a water depth of 10 m by SCUBA diving in the Clyde Sea, Scotland reveals an exceptionally well-preserved and diverse assemblage. A total of 90 different species were identified, comprising 12 agglutinated, 15 porcelaneous and 63 hyaline types; this represents the highest recorded species count described from the west of Scotland. The assemblage probably represents an integrated record of material derived directly from the maerl (mostly epifaunal types) and material derived from the reworking of adjacent sediments (mostly infaunal types). Maerl deposits represent an important near-shore habitat which appear to have been largely overlooked in regional studies of benthic foraminiferal distribution/ecology.

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“…Macroinvertebrates such as the urchin Toxopneustes roseus can cover themselves with rhodoliths and also prefer to eat them rather than fleshy algae (James, 2000). The burrowing crustacean Upogebia deltaura creates extensive burrows among the rhodoliths that can withstand disturbance (Hall-Spencer and atkinson, 1999). Such investigations are still few but the use of standardized scuba-enabled subtidal sampling designs and methods promises to reveal more new species, as well as ecological and biogeographic insights.…”

Section: Rhodolith Systems: Communities and Conservationmentioning

confidence: 99%

Research and Discoveries: The Revolution of Science through Scuba

Lang¹,

Marinelli²,

Roberts³

et al. 2013

Smithsonian Contributions to the Marine Sciences

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ABSTRACT. Rhodolith (maërl) beds, communities dominated by free living coralline algae, are a common feature of subtidal environments worldwide. Well preserved as fossils, they have long been recognized as important carbonate producers and paleoenvironmental indicators. Coralline algae produce growth bands with a morphology and chemistry that record environmental variation. Rhodoliths are hard but often fragile, and growth rates are only on the order of mm/yr. The hard, complex structure of living beds provides habitats for numerous associated species not found on otherwise entirely sedimentary bottoms. Beds are degraded locally by dredging and other anthropogenic disturbances, and recovery is slow. They will likely suffer severe impacts worldwide from the increasing acidity of the ocean. Investigations of rhodolith beds with scuba have enabled precise stratified sampling that has shown the importance of individual rhodoliths as hot spots of diversity. Observations, collections, and experiments by divers have revolutionized taxonomic studies by allowing comprehensive, detailed collection and by showing the large effects of the environment on rhodolith morphology. Facilitated by in situ collection and calibrations, corallines are now contributing to paleoclimatic reconstructions over a broad range of temporal and spatial scales. Beds are particularly abundant in the mesophotic zone of the Brazilian shelf where technical diving has revealed new associations and species. This paper reviews selected past and present research on rhodoliths and rhodolith beds that has been greatly facilitated by the use of scuba.

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Upogebia deltaura (Crustacea: Thalassinidea) in Clyde Sea maerl beds, Scotland

Cited by 42 publications

References 25 publications

Burrow morphology and mating behaviour of the thalassinidean shrimp Upogebia noronhensis

Burrow morphology and mating behaviour of the thalassinidean shrimp Upogebia noronhensis

High benthic foraminiferal species counts in a Clyde Sea maerl bed, western Scotland

Research and Discoveries: The Revolution of Science through Scuba

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