Growth, hatch size and maturation in a southern population of the loliginid squid Loliolus noctiluca

Publication Type:Journal Article
Year of Publication:2010
Authors:L. Ceriola, Jackson G. D.
Journal:Journal of the Marine Biological Association of the United Kingdom
Date Published:Jun
ISBN Number:0025-3154
Accession Number:ISI:000279511000013

Age, growth and cost of reproduction were examined for the small near-shore loliginid squid Loholus noctiluca in Tasmanian waters, near the southern limit of its distribution The effects of several factors on hatch size were also evaluated by comparing the statolith natal ring size (NR) from individuals collected in different locations, seasons and years The life cycle of L noctiluca was less than six months July-hatched females grew faster than their May-hatched counterparts, indicating a faster growth in winter-hatched compared with autumn-hatched individuals. There was considerable variation in NRs as function of location, season, year and sex, with females displaying NRs considerably larger than males in any location and year immature and maturing females displayed poorer body condition than mature counterparts, suggesting that gonad growth does not affect the mantle or fin growth A good condition was maintained also in spent individuals indicating that L. noctiluca continued to Invest in somatic organs throughout the spawning period. A reproductive strategy closer to 'multiple spawning', than to 'single spawning' was proposed for this species Loholus noctiluca was used as a model to explore the possible effects of climate change on near-shore loliginid populations

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith