Annual variation in the prey utilization of juvenile Japanese flounder in southwestern Hiuchi-Nada, Seto Inland Sea, Japan

Yamada, Tetsuo; Maehara, Tsutomu; Watanabe, Akio; Takashima, Kei; Tomiyama, Takeshi

doi:10.1016/j.rsma.2020.101453

Cited by 1 publication

(3 citation statements)

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“…The shallow bottom samplings were conducted once or twice a month from January to August in 2018 and 2019 at high tides during the daytime (see Yamada et al, 2020). The sampling gear was a sledge net with 0.6 m width, 0.5 m height, and a mesh size of 0.76 mm.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

“…It is one of the most dominant decapodal crustaceans in the tidal flats of the central Inland Sea, Japan (Sakaji et al, 2019). Some crangonid species, including C. uritai, are known to be predators of early stage juveniles of commercially important fishes, such as flatfish (Seikai et al, 1993;Asahida et al, 1997;Nakaya et al, 2004;, and are also important prey items for larger juveniles of the same fish species (Yamamoto et al, 2004;Yamamoto & Tominaga, 2014;Yamada et al, 2020). Thus, C. uritai is an important species for the ecology and fisheries of this area.…”

Section: ■ Introductionmentioning

confidence: 99%

“…We were able to collect a series of C. uritai samples with environmental data from the Kawaradzu tidal flat in the central Inland Sea, Japan, during a survey on the settlement of kuruma prawn Penaeus japonicus (Sakaji et al, 2018;. Additionally, we also collected C. uritai samples during our surveys on the prey of Japanese flounder Paralichthys olivaceus from the shallow bottom area off the Kawaradzu tidal flat (Yamada et al, 2020).…”

Section: ■ Introductionmentioning

confidence: 99%

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Settlement and ovigerous season of sand shrimp <i>Crangon uritai</i> in the central Inland Sea, Japan

Sakaji,

Yamada,

Hano

et al. 2024

Crust Res

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Sand shrimp Crangon uritai is distributed in shallow waters including the intertidal zone in eastern Asia and is known to be a prey item and a predator of juveniles of commercially important fishes. Specimens were collected on the Kawaradzu tidal flat, using a rake sledge net (mesh size 2.0 mm) from June to December 2016 and 2017, and in the adjacent shallow bottom (3-4 m depth at high tide) using a sledge net (mesh size 0.76 mm) from January to August 2018 and 2019. Seasonal changes in the density index and carapace length distribution were studied in both sites. The frequency of ovigerous females were indicated for the tidal flat. Settlement mainly occurred from May to July although low intensity settlement seemed to occur throughout the year except for September and October. Ovigerous season in the tidal flat finished in August or September by disappearance of the cohort including ovigerous females and resumed in October with the oviposition of 0-year individuals. Ovigerous females might occur throughout the year except for August or September, although their occurrence was not checked in the shallow bottom. Research on the offshore area is needed to detail the whole life history.

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Section: ■ Materials and Methodsmentioning

confidence: 99%