Piscivorous Habits of Spanish Mackerel Larvae in the Seto Inland Sea

• Shoji Jun

  Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University

• Kishida Tatsu

  National Research Institute of Fisheries Science

• Tanaka Masaru

  Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University

Bibliographic Information

Other Title

• Piscivorous Habits of Spanish Mackerel

Abstract

The stomach contents of 100 yolk-sac larvae and 376 larvae of Spanish mackerel collected in the Seto Inland Sea from 1981-1983 were examined. Standard lengths (SL) of prey animals were back-calculated from their body heights (BH).<br> Late stage yolk-sac larvae with eye pigmentation had jaw teeth and gastric blind-sac, and some of them had already initiated feeding. Stomach contents of larvae consisted primarily of fish larvae, though invertebrate zooplanktons were observed in some early stage larvae. Main prey of Spanish mackerel larvae were larval Clupeiformes, 21% being Japanese anchovy (93% of identified Clupeiformes). The ratios of head length (HL), upper jaw length (UJL), and body height (BH) to SL of Spanish mackerel larvae increased as larval size increased until 11mm SL, then remainedconstant. The back-calculated maximum size and the size range of Japanese anchovy larvae eaten by Spanish mackerel larvae increased until 12mm SL. Spanish mackerel larvae larger than 12mm SL fed on 8-12mm SL Japanese anchovy larvae.<br> The feeding incidence was high for early larval stages: 66, 84, and 92% in 4-5, 5-6, and 6-7mm SL larvae, respectively. These results suggest that Spanish mackerel larvae collected in the Seto Inland Sea actively fed mainly on fish larvae from the first feeding stage.

Journal

• Fisheries science

  Fisheries science 63 (3), 388-392, 1997

  The Japanese Society of Fisheries Science

Keywords

• Spanish mackerel
• larvae
• food habits
• piscivory
• prey size
• Seto Inland Sea
• Scomberomorus niphonius

Details

• CRID: 1390001204430312576
• NII Article ID: 130003903010
• NII Article ID: 10004870063
• NII Book ID: AA10993718
• DOI: 10.2331/fishsci.63.388
• COI: 1:CAS:528:DyaK2sXjvFait7c%3D
• NDL BIB ID: 4231323
• ISSN: 09199268
• ISSN: http://id.crossref.org/issn/09199268
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4231323
• Web Site: https://www.jstage.jst.go.jp/article/fishsci1994/63/3/63_3_388/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed