Plankton Investigation in Inlet Waters Along the Coast of Japan -Xx. Diurnal Change of Plankton Animals at an Innermost Station in Wakayama Harbor-

Yamazi, Isamu

doi:10.5134/174579

Cited by 7 publications

(3 citation statements)

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“…The investigation showed that large zooplankton like Calanus migrated through gradients of this kind. Diurnal migrations of Copepoda and other zooplankton under a probably strong stratification of an estuary was also reported by YAMAZI (1957). It appears from his data that the dependence of the animal numbers on the state of the tide was very marked, but a "residual'f migration was present.…”

Section: B Holoplankto1l In Stratified Watermentioning

confidence: 65%

On the vertical distribution of Zooplankton in the sea

Banse¹

1964

Progress in Oceanography

190

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Section: B Holoplankto1l In Stratified Watermentioning

confidence: 65%

On the vertical distribution of Zooplankton in the sea

Banse¹

1964

Progress in Oceanography

190

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“…Since larvae and juveniles of Japanese sardine, Japanese anchovy and Pacific saury inhabit mainly the 0-50 m depth layer in spring (Tsukamoto et al 2001, Yatsu et al 2005, the abundance of small copepods, including oncaeid copepods, in that layer is critically important for them as prey. Yamazi (1957) reported a nocturnally dense concentration of Oncaea spp. at the sea surface in Wakayama Harbor on the Pacific coast of Japan.…”

Section: Discussionmentioning

confidence: 99%

Seasonal and diel changes in the vertical distribution of oncaeid copepods in the epipelagic zone of the Kuroshio Extension region

Itoh¹,

Nakata

Sasaki³

et al. 2014

Plankton Benthos Res

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Species composition and vertical distribution of oncaeid copepods, which are potentially important prey for juvenile fish, were investigated in the Kuroshio Extension region, the NW Pacific, in April, August, November 1998 and February 2001. Samples were collected from 8 discrete layers in the epipelagic zone (0-200 m depth) using MOCNESS (0.064 mm mesh) during both day and night. Thirty-five oncaeid species were identified. Oncaea (s.l.) zernovi and Spinoncaea ivlevi were numerically the dominant species comprising 20.0-48.2% and 15.2-26.8%, respectively, of adult oncaeid copepods in the epipelagic zone. Cluster analysis on all samples revealed that these were separated into three groups with discrete vertical ranges; the first one appearing in the 0-50 m depth surface layer in April and August and consisting mainly of Oncaea (s. str.), the second one located in the deepest layer and composed mostly of O. zernovi and S. ivlevi with some mesopelagic species, and the third one located above the second one and having intermediate species composition. Species-specific vertical distributions indicate that most oncaeid populations shifted downward from August to November, when the thermocline remarkably descended. However, most Oncaea spp. did not show a downward shift with the thermocline, and were positively correlated to appendicularian abundances, suggesting that appendicularian houses, known to be oncaeid habitats and to provide food, were a possible factor affecting their vertical distribution. Niche partitioning, allowing coexistence of congeners, might be explained by differences in body size and distribution layers in Oncaea and by differences in distribution layer in Triconia.

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“…Papers on VM (vertical migration) in 1aboratorie~ have been written by Lewis (1959), Lance (1962), Enright & Hannner (1967), Bjornberg &Wi1bur (1968), andGrind1ey (1972). Researches on VM at sea, in in1et or sha110w waters, have been worked out by Yamazi (1957), Jacobs (1968, Pi11ai & Pi11ai (1973), Daro (1974), Stickney & Know1es (1975), Furuhashi (1976) and Grind1ey (1977).…”

Section: Introductionmentioning

confidence: 99%

Vertical distribution of Paracalanus crassirostris (Copepoda, Calanoidea): analysis by the general linear model

Milstein

1979

Bol. Inst. Oceanogr.

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Plankton Investigation in Inlet Waters Along the Coast of Japan -Xx. Diurnal Change of Plankton Animals at an Innermost Station in Wakayama Harbor-

Abstract: With 12 Text-figures and 2 Tables Many works have already been made on the diurnal migration of plankton animals in fresh-and salt waters (

Cited by 7 publications

References 0 publications

On the vertical distribution of Zooplankton in the sea

On the vertical distribution of Zooplankton in the sea

Seasonal and diel changes in the vertical distribution of oncaeid copepods in the epipelagic zone of the Kuroshio Extension region

Vertical distribution of Paracalanus crassirostris (Copepoda, Calanoidea): analysis by the general linear model

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