The effect of water flow on movement, burrowing, and distributions of the gastropod Ilyanassa obsoleta in a tidal creek

Levinton, Jeffrey S.; Martínez, Dina Elsa; McCartney, Michael A.; Judge, Michael L.

doi:10.1007/bf00350874

Cited by 28 publications

(8 citation statements)

References 30 publications

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“…avoid fast currents and "escape" from a stressful current velocity. This is also known for P. antipodarum (Holomuzki and Biggs, 1999) and the marine nassarid gastropod Ilyanassa obsoleta (Levinton et al, 1995). We observed no flight reaction with increasing currents in the four investigated species.…”

Section: Effect Of Current Velocitymentioning

confidence: 76%

“…The complex interactions between movements, flow, substratum structure, and food conditions has been described in diverse gastropod taxa (e.g. Levinton et al, 1995;Johnson and Brown, 1997;Hoffman et al, 2006). In field experiments it is nearly impossible to differ between the significant effects of the specific factors on the behaviour of snails.…”

Section: Resultsmentioning

confidence: 98%

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Response of gastropod grazers to food conditions, current velocity, and substratum roughness

2016

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a b s t r a c tFreshwater snails are widely distributed in running water systems. Most of them are feeding on biofilms attached to substrata. We used gastropods with different morphology and potentially different traits to analyse the effect of water currents and substratum roughness on the interactions between grazers and biofilms. The gastropods were exposed to naturally grown biofilms from the River Rhine that differed in age and in their artificial substratum roughness (mimicked by abrasive paper). The experiments were conducted in endless channels with paddle wheels where the current velocity could be set steplessly. The freshwater pulmonates Ancylus fluviatilis and Physella acuta as well as the freshwater prosobranchs Bithynia tentaculata and Potamopyrgus antipodarum were used as model organisms in this investigation. The time the snails remained on the test area related to the substratum roughness, and current velocity was used to compare the performance of the four snail species on different aged biofilms. In one experiment, the locomotive activity of snails was traced.Gastropods left substrata without biofilms and did not show different responses to biofilms of diverse ages with significant differences in their biochemical contents. Grazing by snails altered the biofilms in their chlorophyll-a content, ash-free dry mass, and ash mass. A current velocity above 0.12 m s −1 drove B. tentaculata, P. acuta, and P. antipodarum off the test areas, only A. fluviatilis remained unaffected by the applied current velocities (up to 0.23 m s −1 ). The substratum roughness had no direct influence on the retention time of snails and their locomotive activity on the substrata, whereas the chlorophyll-a content of the biofilm strongly influenced snail activity. Substratum roughness had only an indirect influence on the behaviour of snails contrary to studies on marine snail species.

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Section: Effect Of Current Velocitymentioning

confidence: 76%

Section: Resultsmentioning

confidence: 98%

Response of gastropod grazers to food conditions, current velocity, and substratum roughness

2016

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“…It was difficult to interpret these behaviors, however, because we provided only a 1·cm layer of sand for animals to move through. Previous experiments with a smaller deposit-feeding gastropod indicate that burial is a common response to rapid flow velocities (Levinton et al, 1995) and future studies using deeper sediments could clarify the importance of whelk burial and subsurface movement within the context of chemically mediated predation.…”

Section: Discussionmentioning

confidence: 92%

Slow-moving predatory gastropods track prey odors in fast and turbulent flow

Ferner

Weissburg

2005

Journal of Experimental Biology

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“…The ability of prey to escape from avian predators might be limited during times of high water flow velocity, as upstream burst swimming will be restricted. The influence of water currents on the locomotion of other marine species, such as snails, has already been reported (although this group of species is not of importance to terns), and they were found to move and disperse differently in accordance with the water flow (Levinton et al. , 1995).…”

Section: Discussionmentioning

confidence: 95%

Influence of water flow velocity, water depth and colony distance on distribution and foraging patterns of terns in the Wadden Sea

Schwemmer

Adler

Guse

et al. 2009

Fisheries Oceanography

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Surface-feeding seabirds, such as Common (Sterna hirundo) and Arctic Terns (Sterna paradisaea) in the German Wadden Sea, are dependent on biological and physical processes that affect prey availability close to the water surface. We proposed the following four hypotheses: (i) relationships should exist between high water flow velocity and foraging activity of terns, as turbulence should enhance prey availability at the surface; (ii) the areas of highest foraging success should be located within areas of low water depth, due to enhanced biological productivity; (iii) as terns are known to have small foraging radii, the location of their breeding grounds should be related to the location of their foraging grounds; (iv) terns should forage intensely in river estuaries, as these should hold ample food supplies. The time between terns leaving the colony and their first foraging attempt differed significantly among different tidal stages: the time was shortest during flood and ebb tides (i.e., highest water flow velocities). Modelling of a long-term data set revealed the highest probability of foraging activity in conditions of high water currents, in both shallow areas and in areas of around 15-20 m depth. Foraging activity was negatively correlated with distance from colony. The distance to the closest estuary had no significant effect on foraging behaviour. Our findings emphasize the physical-biological coupling in the Wadden Sea and highlight the overall importance of small-scale physical processes in directly influencing prey availability for surface-feeding seabirds.

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The effect of water flow on movement, burrowing, and distributions of the gastropod Ilyanassa obsoleta in a tidal creek

Cited by 28 publications

References 30 publications

Response of gastropod grazers to food conditions, current velocity, and substratum roughness

Response of gastropod grazers to food conditions, current velocity, and substratum roughness

Slow-moving predatory gastropods track prey odors in fast and turbulent flow

Influence of water flow velocity, water depth and colony distance on distribution and foraging patterns of terns in the Wadden Sea

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