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The effect of conspecific interaction on survival, growth and feeding behaviour of early juvenile tropical spiny lobster Panulirus ornatus

Citation

Kropielnicka-Kruk, K and Trotter, AJ and Fitzgibbon, QP and Smith, GG and Carter, CG, The effect of conspecific interaction on survival, growth and feeding behaviour of early juvenile tropical spiny lobster Panulirus ornatus, Aquaculture, 510 pp. 234-247. ISSN 0044-8486 (2019) [Refereed Article]

Copyright Statement

Copyright 2019 Elsevier B.V.

DOI: doi:10.1016/j.aquaculture.2019.05.017

Abstract

Behaviour underpins many facets of the performance of animals in aquaculture. By manipulating culture systems to segregate or allow particular aspects of conspecific interaction, we found physical interactions between P. ornatus individuals to be essential for better culture performance. Three culture types were used to control conspecific interactions: isolated culture (individual vessels) excluded all conspecific interactions, separated culture (lobsters cultured in adjacent cages) excluded physical interactions, and communal culture allowed for all interactions. Two water exchange rates were introduced to investigate the influence of chemical cue intensity on growth and survival. Time-series photography was used to determine the feeding behaviour and preference for different feeds including mussel gonad, commercial prawn feed and moist feed. The experiment showed improved growth and moulting frequency in communally cultured lobsters. These results suggest that direct physical contact between conspecifics is required to optimise growth of lobsters, which may be related to the complex social structures of this gregarious species. Behavioural observations of two juvenile instars (2 and 4), revealed circadian rhythm of interactions with feeds, feed preferences and intake. Observations revealed differing behaviours between the different culture types, where lobsters reared in separation displayed higher level of interactions with feeds; however this was not associated with higher feed intake. Observations of two juvenile instars (2 and 4) exhibited increase of daylight activity (interactions with feeds and feed intake) in older lobsters (instar 4).

Item Details

Item Type:Refereed Article
Keywords:spiny lobster, formulated feeds, Panulirus ornatus, nutrition, aquaculture, crustacean behaviour, cannibalism, nutrition, tropical rock lobster
Research Division:Agricultural and Veterinary Sciences
Research Group:Fisheries Sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - Aquaculture
Objective Field:Aquaculture Rock Lobster
UTAS Author:Kropielnicka-Kruk, K (Mrs Katarzyna Kropielnicka-Kruk)
UTAS Author:Trotter, AJ (Dr Andrew Trotter)
UTAS Author:Fitzgibbon, QP (Dr Quinn Fitzgibbon)
UTAS Author:Smith, GG (Professor Gregory Smith)
UTAS Author:Carter, CG (Professor Chris Carter)
ID Code:133015
Year Published:2019
Funding Support:Australian Research Council (IH120100032)
Deposited By:Fisheries and Aquaculture
Deposited On:2019-06-03
Last Modified:2020-01-14
Downloads:0

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