Productivity and grazing impact of Oikopleura dioica (Tunicata, Appendicularia) in Tokyo Bay

Sato, Riki; Ishibashi, Yutaka; Tanaka, Yuji; Ishimaru, Takashi; Dagg, M.

doi:10.1093/plankt/fbn001

Cited by 30 publications

(18 citation statements)

References 33 publications

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“…There were higher densities of copepods and O. dioica appendicularians in the transitional waters of the front, coinciding with a higher chlorophyll a concentration Ramirez 1996, Capitanio andEsnal 1998). Although both the biomass and abundance of copepods were higher than those of appendicularians, the latter had significantly higher production rates (Sato et al 2008, Jaspers et al 2009. While several experimental studies have shown an indirect interaction between calanoids and appendicularians, no studies have been carried out on the interactions between cyclopoids and appendicularians.…”

Section: Discussionmentioning

confidence: 95%

“…Copepods are considered the most abundant mesozooplankton group in many pelagic environments (Kiørboe 1998), and along with appendicularians, they are the most important secondary producers (Gorsky and Fenaux 1998, Hopcroft and Roff 1998, Sato et al 2008. Both groups play an important role as consumBoth groups play an important role as consumers of both the phytoplankton and microbial components of food webs.…”

Section: Introductionmentioning

confidence: 99%

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Potential zooplankton preys (Copepoda and Appendicularia) for <i>Engraulis anchoita</i> in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)

et al. 2011

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SUMMARY:We investigated the spatial distribution of the abundance, biomass and size of zooplankton (nauplii, calanoids, cyclopoids and appendicularians) in relation to the distribution of first-feeding larvae and eggs of Engraulis anchoita across the frontal system of Peninsula Valdés. Twelve samples of zooplankton and ichthyoplankton were taken with small Bongo (67 µm) and Pairovet (200 µm) nets during the spring of 2004 along two transects. The total abundance of zooplankton and the chlorophyll a concentration were higher in homogeneous waters, while total biomasses were higher in stratified waters. Temperature was negatively correlated with biological variables and was the main factor affecting the zooplankton distribution. In both transects, abundance peaks of first-feeding larvae were detected at coastal stations along with the smallest fraction of zooplankton (<500 µm), while the largest fraction was dominant at the external stations, coinciding with the highest egg abundance. The physical structure of this front generates different levels of food availability for first-feeding larvae. Calanoids (southern transect) and cyclopoids (northern transect) are predominant followed by nauplii and appendicularians. The biomass of zooplankton preys contributes to the carbon transfer to the upper trophic levels and is probably important for the survival and growth of anchovy larvae in this frontal system. Keywords: southwestern Atlantic Ocean, North Patagonian frontal system, copepods, appendicularians, zooplanktonanchovy linkage.RESUMEN: Potenciales presas zooplanctónicas (Copepoda y Appendicularia) para Engraulis anchoita en relación con las distribuciones de larvas tempranas y de desove en la región frontal patagónica (océano Atlán-tico sudoccidental). -Se investigó la distribución espacial de la abundancia, biomasa y las tallas del zooplancton (nauplii, calanoideos, ciclopoideos y apendicularias) en relación con la distribución de las larvas en estadio de primera alimentación y los huevos de Engraulis anchoita en el sistema frontal de Península Valdés. Se tomaron 12 muestras de zooplancton e ictioplancton durante la primavera de 2004 a lo largo de dos transectos, mediante una red Minibongo (67 µm) y una Pairovet (200 µm) respectivamente. La abundancia total del zooplancton y la concentración de clorofila fue mayor en aguas homogéneas, mientras que la biomasa fue mayor en aguas estratificadas. La temperatura se correlacionó negativamente con las variables biológicas siendo ésta el principal factor que afectó la distribución del zooplancton. En las estaciones costeras de ambos transectos, se encontró la mayor abundancia de larvas en coincidencia con la fracción más pequeña de zooplancton (<500 µm), mientras que la fracción más grande fue dominante en las estaciones externas, en coincidencia con la mayor abundancia de huevos. La estructura física de este frente genera diferente disponibilidad de alimento para las larvas siendo los calanoideos (transecto sur) y los ciclopoideos (transecto norte) predominantes, seguid...

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Potential zooplankton preys (Copepoda and Appendicularia) for <i>Engraulis anchoita</i> in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)

et al. 2011

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“…In a first step, the area_exc or feret result was converted to zooplankton dry mass with the relations established by Lehette and Hernandez-Léon (2009). In a second step, carbon was estimated from carbon to dry weight conversion factors available in the literature (Beers, 1966;Davis and Wiebe, 1985;Gibson and Paffenhöfer, 2002;Sato et al, 2008;Uye, 1982). To account for the contribution of Noctiluca sp., spherical volume was estimated from ESD measurements and converted to carbon based on Menden-Deuer and Lessard (2000).…”

Section: Mesozooplankton Sampling and Analysismentioning

confidence: 99%

Influence of physical forcing on mesozooplankton communities at the Ushant tidal front

Schultes¹,

Sourisseau²,

Masson³

et al. 2013

Journal of Marine Systems

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“…Com isso, podem reduzir drasticamente a biomassa fitoplanctônica, regular o tamanho da população e sua disponibilidade para outros herbívoros (Barnes & Hughes 1982, Esnal 1986, López-Urrutia et al 2005, Sato et al 2008. Porém, em ambientes costeiros e estuarinos esse mecanismo de alimentação pode contribuir para o aumento da transparência da água e a penetração de luz, estimulando o desenvolvimento do fitoplâncton (Dagg et al 1996, Fernández & Acuña 2003.…”

unclassified

Checklist da classe appendicularia (Chordata: Tunicata) do Estado de São Paulo, Brasil

2011

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VEGA-PÉREZ, L.M., CAMPOS, M.A.G. & SCHINKE, K.P. Checklist of class appendicularia (Chordata: Tunicata) from São Paulo State, Brazil. Biota Neotrop., 11(1a): http://www.biotaneotropica.org.br/v11n1a/en/ abstract?inventory+bn0401101a2011. Abstract:The appendicularians are planktonic tunicates exclusively marine, characterized by the presence of the notochord in the adult stage and the lack of the peribranchial cavity and cloacae. The body is transparent and divided into two regions: a trunk, exceptionally exceeding 5 mm, and a tail which is generally several times longer than the trunk. These organisms, with exception of Oikopleura dioica, are hermaphroditic protandric, and release their gametes directly to the water column. They have both very high fecundity and growth rate. The primarily food item of appendicularians is pico-nannoplankton, virus, bacteria and mucoid substances. They feed by means of a complex mucous structure, the "house" which is secreted by the trunk and used as tangential flow filter to concentrate ambient food particles prior to their collection by the pharyngeal filter. The appendicularians are important food item of others components of the zooplankton, including larval and adult fish. On the other hand, the marine snow produced by them contribute substantially to the carbon turn over time. The sinking rates of their faecal pellets and discharged houses can reach deep waters and their repackaging activity may play a significant role in channeling short lived carbon toward sequestration. The Appendicularians are conspicuous members of marine zooplankton, occurring in both neritic and oceanic regions of all oceans. High number of species is epipelagic, being most abundant around 100-200 m. However, some species inhabit the meso-and bathypelagic regions. The highest diversity of Appendicularians has been reported from warmest waters. At the moment 82 species belonging to the Oikopleuridae, Fritillariidae and Kowalesvkiidae families were identified, and from these, 43 species have been recorded in South Atlantic and 29 species in Brazilian waters. In São Paulo State twenty species were found along the coastal waters. Resumo: Os tunicados da classe Appendicularia são organismos pelágicos, exclusivamente marinhos, caracterizados pela ausência da cavidade branquial e da cloaca, bem como pela retenção de notocorda e cauda muscular no estágio adulto. O corpo, delicado e transparente, é formado pelo tronco que raramente excede os 5 mm e pela cauda, várias vezes mais longa que o tronco. São hermafroditas protândricos, exceção feita à espécie Oikopleura dioica, que na época da reprodução lançam os gametas na água onde ocorre a fecundação. Os apendiculários se alimentam basicamente de pico-nanoplâncton, bem como de pequenas diatomáceas, vírus, bactérias e material coloidal. Durante a alimentação utilizam a casa ou "house", secretada pelo epitélio glandular do tronco, que possui filtros internos para concentrar as partículas antes de serem selecionadas e ingeridas. Na teia alimentar marina, são elo imp...

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Productivity and grazing impact of Oikopleura dioica (Tunicata, Appendicularia) in Tokyo Bay

Cited by 30 publications

References 33 publications

Potential zooplankton preys (Copepoda and Appendicularia) for <i>Engraulis anchoita</i> in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)

Potential zooplankton preys (Copepoda and Appendicularia) for <i>Engraulis anchoita</i> in relation to early larval and spawning distributions in the Patagonian frontal system (SW Atlantic Ocean)

Influence of physical forcing on mesozooplankton communities at the Ushant tidal front

Checklist da classe appendicularia (Chordata: Tunicata) do Estado de São Paulo, Brasil

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