Skip to main content
×
Home
    • Aa
    • Aa

Estimated life span of the Japanese pygmy squid, Idiosepius paradoxus from statolith growth increments

  • Noriyosi Sato (a1), Takashi Kasugai (a2) and Hiroyuki Munehara (a3)
Abstract

Growth increments in statoliths of Idiosepius paradoxus were observed for aging analysis. The rate of increment formation was examined by staining the statoliths with tetracycline at 5–14 d intervals. In 6 of 16 specimens, increments formed daily, but in the other specimens, increments formed less than one per day. The maximum number of increments observed in males and females were more than 150 and 140, respectively, suggesting a life span of ≥150 and ≥140 d. During the cool season (from November to April), the dorsal mantle length (DML) and the number of increments gradually increased. Specimens collected in June showed bi-modal patterns in DML and the number of increments. Only small specimens were collected from August to October. These results suggest that two generations alternately occurred in the cool season and in the warm season.

Copyright
Corresponding author
Correspondence should be addressed to: Noriyosi Sato Division of Biosphere Science Graduate School of Environmental Science Hokkaido University Kita-ku, Sapporo Hokkaido 060–0810 Japan email: norico@fish.hokudai.ac.jp
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

A.I. Arkhipkin (2004) Diversity in growth and longevity in short-lived animals: squid of the suborder Oegopsina. Marine and Freshwater Research 55, 341355.

L. Challier , J. Royer and J.P. Robin (2002) Variability in age-at-recruitment and early growth in English Channel Sepia officinalis described with statolith analysis. Aquatic Living Resources 15, 303311.

J.W. Forsythe and R.T. Hanlon (1988) Effect of temperature on laboratory growth, reproduction and life-span of octopus-bimaculoides. Marine Biology 98, 369379.

G.D. Jackson (1994) Application and future potential of statolith increment analysis in squids and sepioids. Canadian Journal of Fisheries and Aquatic Sciences 51, 26122625.

G.D. Jackson and J.H. Choat (1992) Growth in tropical cephalopods: an analysis based on statolith microstructure. Canadian Journal of Fisheries and Aquatic Sciences 49, 218228.

G.D. Jackson , J.W. Forsythe , R.F. Hixon and R.T. Hanlon (1997) Age, growth, and maturation of Lolliguncula brevis (Cephalopoda: Loliginidae) in the northwestern Gulf of Mexico with a comparison of length–frequency versus statolith age analysis. Canadian Journal of Fisheries and Aquatic Sciences 54, 29072919.

G.D. Jackson , B.M. Steer , S. Wotherspoon and A.J. Hobday (2003) Variation in age, growth and maturity in the Australian arrow squid Nototodarus gouldi over time and space—what is the pattern? Marine Ecology Progress Series 264, 5771.

Y. Natsukari , T. Nakanose and K. Oda (1988) Age and growth of loliginid squid Photololigo edulis Hoyle 1885. Journal of Experimental Biology and Ecology 116, 177190.

S.R. Tracey , M.A. Steer and G.T. Pecl (2003) Life history traits of the temperate mini-maximalist Idiosepius notoides (Cephalopoda: Sepioidea). Journal of the Marine Biological Association of the UK 83, 12971300.

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Journal of the Marine Biological Association of the United Kingdom
  • ISSN: 0025-3154
  • EISSN: 1469-7769
  • URL: /core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Full text views

Total number of HTML views: 1
Total number of PDF views: 6 *
Loading metrics...

Abstract views

Total abstract views: 94 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 21st September 2017. This data will be updated every 24 hours.