Vertical distribution and trophic structure of the macrozooplankton in a shallow temperate estuary (Ria de Aveiro, Portugal)

Morgado, Fernando; Pastorinho, M. Ramiro; Quintaneiro, Carla; Ré, Pedro

doi:10.3989/scimar.2006.70n2177

Cited by 10 publications

(6 citation statements)

References 69 publications

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“…Despite the fact that in recent years there has been an apparent growing interest in this research topic in marine ecosystems (Hays, 2003), few studies have been made in southern European coastal systems (e.g. Queiroga et al, 1997;Rawlinson et al, 2004;David et al, 2005;Morgado et al, 2006). These studies focused mainly on macrozooplankton populations or on specific species.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of estuarine mesozooplankton dynamics at a fine temporal scale: the role of seasonal, lunar and diel cycles

Marques

Azeiteiro

Martinho

et al. 2009

Journal of Plankton Research

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Section: Introductionmentioning

confidence: 99%

Evaluation of estuarine mesozooplankton dynamics at a fine temporal scale: the role of seasonal, lunar and diel cycles

Marques

Azeiteiro

Martinho

et al. 2009

Journal of Plankton Research

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“…In aquarium experiments, juvenile R. africana required a specific ingestion rate up to ten times that of adults, and the ingestion rate was five times more dependent on zooplankton concentration for juveniles, which indicates lower capture efficiency and greater handling time for juveniles. DVM of copepod prey shows that a greater concentration of zooplankton are present near the bottom during the day (Leising et al 2005;Morgado et al 2006;Thorisson 2006), when juvenile R. egregius are near the bottom. These relationships show the R. egregius population may be partitioning habitat to increase juvenile survival, by both minimizing intraspecific predation of adults on juveniles, and allowing the exploitation of this niche foraging environment by juveniles at optimal prey abundance to enhance growth.The mechanisms behind the phenomena described above for R. egregius are the subject of research presently underway in the Georges River.…”

Section: Population Structure and Habitat Partitioningmentioning

confidence: 99%

Spatial and temporal patterns of habitat use by three estuarine species of mysid shrimp

Taylor

2008

Mar. Freshwater Res.

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Abstract. The mysids Rhopalopthalmus egregius, Haplostylus dakini and Doxomysis australiensisare abundant yet unstudied omnivorous crustaceans in Australian estuaries. Habitat use and population dynamics were investigated for these species over spring and summer in the Tweed River, Australia, to explore their ecological role in estuarine ecosystems. Overall, mysids were concentrated in shallow unvegetated and deep unvegetated estuarine habitats. H. dakini were most abundant in shallow and deep bare habitats at night, whereas R. egregius were most abundant in deep bare habitats during the night. D. australiensis were present across all habitats in the night, but negligible numbers were present during the day. Significantly greater numbers of R. egregius and D. australiensis were sampled during the new moon, compared with the full moon. Significantly larger R. egregius and D. australiensis individuals were present in benthic habitats at night, indicating possible partitioning of habitat for juvenile and adult subpopulations. Adaptive foraging strategies and habitat use facilitates the coexistence of sympatric mysid species, H. dakini and R. egregius, and within-species habitat partitioning allowed juvenile R. egregius to avoid interaction with adult R. egregius. The observed dynamics minimize interand intra-specific predation between mysids, and by other predators, while optimizing access to key trophic resources.

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“…In several studies, the effects of tides and photoperiodic variations have focused on the dynamics of estuarine larval decapod, both in temperate areas (Morgado et al, 2006) as well as in tropical (e.g., SilvaFalcão et al, 2007) and subtropical regions (Fernandes et al, 2002;Koettker & Freire, 2006). Usually the synchronization of the larval release with photoperiod seems to be associated with susceptibility to predation (Morgan & Christy, 1995).…”

Section: Paper Presented In Thementioning

confidence: 99%

Composition of decapod larvae in a northeastern Brazilian estuarine inlet over a full tidal cycle

Júnior¹,

Melo²,

Paranaguá³

et al. 2016

lajar

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ABSTRACT. Composition changes of decapod larvae in a neotropical estuarine inlet (Catuama inlet, northeast Brazilian coast) were studied in a complete tidal cycle in August 2001. Sampling was performed at three stations at two or three depth levels that were located along a transect across the inlet. The collections were performed in 3 h intervals under a neap tide regime. Samples were taken with a pump and the water was filtered through 300 μm plankton net. 27 planktonic decapod taxa were identified, which included the first larval stages of the coastal and oceanic shrimps Lucifer faxoni and Acetes americanus, besides larvae of the estuarine and coastal decapods Pinnixa spp., Uca spp., Petrolisthes armatus, Upogebia spp. and Alpheidae, which were the most frequent taxa. All of the planktonic larval stages were observed for most of the decapods, suggesting that the probable exportation from the estuary is to the inner adjacent shelf area, instead of the outer oceanic area. Keywords: decapod larvae, meroplankton, tidal changes, neotropical estuary, northeastern Brazil.Composición de larvas de decápodos en la desembocadura de un estuario del noreste brasileño durante un ciclo completo de marea RESUMEN. Se analizaron los cambios en la composición de las larvas de decápodos en la desembocadura de un estuario neotropical durante un ciclo completo de marea en agosto de 2001. Las colectas se realizaron en 3 estaciones, en dos o tres profundidades, localizadas en una transecta interior. Los muestreos se realizaron a intervalos de 3 h durante la marea de cuadratura. Las muestras se colectaron con una bomba y se filtraron a través de una red de plancton (300 μm). Se identificaron 27 taxa de larvas de decápodos, incluyendo el primer estadio larval de los camarones costeros y oceánicos Lucifer faxoni y Acetes americanus, seguidos de las larvas de los decápodos estuarinos y costeros Pinnixa spp., Uca spp., Petrolisthes armatus, Upogebia spp. y Alpheidae, que fueron los taxa más frecuentes. Se observaron todos de los estadios larvales de la mayoría de los decápodos, lo que sugiere que probablemente la exportación del estuario es hacia el área interior de la plataforma adyacente, en vez de hacia el área oceánica exterior. Palabras clave: larvas de decápodos, meroplancton, cambios de marea, estuario neotropical, noreste de Brasil.

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Vertical distribution and trophic structure of the macrozooplankton in a shallow temperate estuary (Ria de Aveiro, Portugal)

Cited by 10 publications

References 69 publications

Evaluation of estuarine mesozooplankton dynamics at a fine temporal scale: the role of seasonal, lunar and diel cycles

Evaluation of estuarine mesozooplankton dynamics at a fine temporal scale: the role of seasonal, lunar and diel cycles

Spatial and temporal patterns of habitat use by three estuarine species of mysid shrimp

Composition of decapod larvae in a northeastern Brazilian estuarine inlet over a full tidal cycle

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