Spatio-temporal dynamics of a meiobenthic copepod and the impact of predation-disturbance

Hicks, Geoffrey R. F.

doi:10.1016/0022-0981(84)90223-5

Cited by 63 publications

(57 citation statements)

References 39 publications

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“…This extends the observation by Hicks (1984) that the highest densities of P. megarostrum occurred in intertidal sediments on Mana Bank. Hicks also found that the species was more abundant in the troughs of the sediment ripples, compared to the crest, and postulated that this resulted from selective accumulation of organic detritus in the troughs.…”

Section: Discussionsupporting

confidence: 89%

Distribution of meiobenthic copepods from various habitats in Pauatahanui Inlet, New Zealand

Iwasaki

1993

New Zealand Journal of Marine and Freshwater Research

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The composition of meiobenthic copepod assemblages at two locations in Pauatahanui Inlet was determined for different substrata. In Ration Creek the density of copepods tended to increase from the creekside (which is covered with sea rush), to the bare mud of the creek bed. Brianola sp., though abundant, was restricted to the creek bed. On Mana Bank, which is an intertidal fine silty sand bank partially covered with eelgrass, Zostera capricorni, and the green alga Enteromorpha spp., there was little resemblance between the copepod assemblages at seven sites. The sediments of Mana Bank can apparently support a variety of copepod assemblages as a result of the increased spatial heterogeneity caused by vegetation and tidal exposure.

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Section: Discussionsupporting

confidence: 89%

Distribution of meiobenthic copepods from various habitats in Pauatahanui Inlet, New Zealand

Iwasaki

1993

New Zealand Journal of Marine and Freshwater Research

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“…For instance, Alheit and Scheibel (1982) showed exclusive feeding on L. helgolandica by predatory fishes in a Bermudan lagoon. Hicks (1984), in his study of flatfish feeding on intertidal sandflats in New Zealand, also found exclusive feeding on one harpacticoid species (P. megarostrum). For B. luteum from the Mediterranean, a marked preference for Pseudobradya beduina was described, whereas the goby D. quadrimaculatus from the same habitat fed exclusively on H. canaliculatum (Tito de Morais and Bodiou 1984).…”

Section: Prey Selectivitymentioning

confidence: 93%

“…For instance, Alheit and Scheibel (1982) found selective feeding on Longipedia helgolandica Klie 1949 in a shallow lagoon of Bermuda. Sibert (1979) mentioned that Harpacticus uniremis Krøyer 1842 was consumed by salmon fry in British Columbia (Canada) in greater proportions than predicted from its abundance in the sediments, and Hicks (1984) found that juvenile flatfish feeding on intertidal sandflats in New Zealand fed exclusively on the harpacticoid Parastenhelia megarostrum.…”

mentioning

confidence: 99%

Meiofauna as food source for small-sized demersal fish in the southern North Sea

et al. 2012

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Meiofauna play an essential role in the diet of small and juvenile fish. However, it is less well documented which meiofaunal prey groups in the sediment are eaten by fish. Trophic relationships between five demersal fish species (solenette, goby, scaldfish, dab \20 cm and plaice \20 cm) and meiofaunal prey were investigated by means of comparing sediment samples and fish stomach contents collected seasonally between January 2009 and January 2010 in the German Bight. In all seasons, meiofauna in the sediment was numerically dominated by nematodes, whereas harpacticoids dominated in terms of occurrence and biomass. Between autumn and spring, the harpacticoid community was characterized by Pseudobradya minor and Halectinosoma canaliculatum, and in summer by Longipedia coronata. Meiofaunal prey dominated the diets of solenette and gobies in all seasons, occurred only seasonally in the diet of scaldfish and dab, and was completely absent in the diet of plaice. For all fish species (excluding plaice) and in each season, harpacticoids were the most important meiofauna prey group in terms of occurrence, abundance and biomass. High values of Ivlev's index of selectivity for Pseudobradya spp. in winter and Longipedia spp. in summer provided evidence that predation on harpacticoids was species-selective, even though both harpacticoids co-occurred in high densities in the sediments. Most surficial feeding strategies of the studied fish species and emergent behaviours of Pseudobradya spp. and Longipedia spp. might have caused this prey selection. With increasing fish sizes, harpacticoid prey densities decreased in the fish stomachs, indicating a diet change towards larger benthic prey during the ontogeny of all fish species investigated.

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“…In a n attempt to determine the swimming potential of this species, experiments using emergence traps showed that, unlike members of an adjacent seagrass copepod assemblage, P. megarostrum did not actively emerge from the sediment and undertake bouts of swimming activity during high tidal periods (Hicks 1986). Evidence from this and other studies (Hicks 1984(Hicks , 1988) strongly suggests that this species, in particular young stages of the population, has great fidelity to sediment particles.…”

Section: Introductionmentioning

confidence: 72%

“…The site, a n intertidal sandbank (Mana Bank) in Pauatahanui Inlet, New Zealand (41" 06' S, 174" 54' E), has been adequately described in other publications (see Hicks 1984Hicks , 1989. Tidal sea level change within the inlet is semidiurnal and near symmetrical with a mean spring range of 1.25 m and mean neap range of 0.4 m. The bank is emergent for ca 6.10 h of each cycle, but local sea levels and tidal range are frequently influenced by meterological conditions.…”

Section: Methodsmentioning

confidence: 99%

Tidal and diel fluctuations in abundance of meiobenthic copepods on an intertidal estuarine sandbank

Hicks¹

1992

Mar. Ecol. Prog. Ser.

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Short-term changes in the population density of 2 abundant species of sand dwelling rneiobenthic copepod and the population structure of the dornlnant species have been investigated in a New Zealand estuary. Samples were collected every 2 h for 24 h in a sampling regime that spanned 2 tidal cycles and 1 day/night cycle. Average sediment densities of Parastenhelia megarostrum were higher during periods of exposure than during periods of cover by tidal waters. Mean abundance of juveniles (copepodites) and adult males differed significantly in relation to the state of the tide. Females with and without egg sacs only indicate day/night differences at low tide. There were no tidal or diel differences in abundance for the interstitial species Paraleptastacus sp. For P. megarostrum, it is suggested that sediment abundance variability is tidal current flow/body size interactive. While the role of passive erosion is clearly important, it is argued that behavioural factors might also predispose copepodites to resuspension in the overlying water column. Die1 differences in abundance of adult females may indicate a response to changes in patchiness of presumed autotrophic food resources.

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Spatio-temporal dynamics of a meiobenthic copepod and the impact of predation-disturbance

Cited by 63 publications

References 39 publications

Distribution of meiobenthic copepods from various habitats in Pauatahanui Inlet, New Zealand

Distribution of meiobenthic copepods from various habitats in Pauatahanui Inlet, New Zealand

Meiofauna as food source for small-sized demersal fish in the southern North Sea

Tidal and diel fluctuations in abundance of meiobenthic copepods on an intertidal estuarine sandbank

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