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<title>UTas ePrints - Modelling seasonal catchability of the southern rock lobster Jasus edwardsii by water temperature, moulting, and mating</title>
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<meta content="Ziegler, Philippe E." name="eprints.creators_name" />
<meta content="Haddon, Malcolm" name="eprints.creators_name" />
<meta content="Frusher, Stewart D." name="eprints.creators_name" />
<meta content="Johnson, Craig R." name="eprints.creators_name" />
<meta content="pziegler@utas.edu.au" name="eprints.creators_id" />
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<meta content="Craig.Johnson@utas.edu.au" name="eprints.creators_id" />
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<meta content="2007-05-31" name="eprints.datestamp" />
<meta content="2008-02-04T05:23:07Z" name="eprints.lastmod" />
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<meta content="Modelling seasonal catchability of the southern rock lobster
Jasus edwardsii by water temperature, moulting, and mating
" name="eprints.title" />
<meta content="pub" name="eprints.ispublished" />
<meta content="270702" name="eprints.subjects" />
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<meta content="Jasus edwardsii, southern rock lobster" name="eprints.keywords" />
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<meta content="Seasonal variation in catchability of legal-sized
male and female southern rock lobster Jasus edwardsii in
a scientific reserve in south-east Tasmania, Australia,
over a 15-month period was described by modelling the
effects of water temperature, moulting and mating.
Seasonal changes in water temperature described 62% of
the variation of catchability for males, but were a poor
predictor of catchability for females outside winter. Both
moulting and mating was highly synchronised, although
males and females moulted at different times of the year.
This had a significant sex-specific effect on catchability,
because the models developed here indicate that feeding
and therefore catchability is decreased during moulting
and mating and followed by an increased food consumption
to compensate for the lack of feeding during
these periods. Gaussian probability density functions
were used to represent the timing and intensity of moulting,
mating and subsequent compensation periods,
and were combined with the description of seasonal
temperature changes. Four Gaussian functions in
agreement with independent biological data considerably
improved the model fits for the catchability of
males (R2=0.84). Adding a single Gaussian function to
the temperature model, representing a combined moulting
and mating period, provided a good fit to the
variation in catchability of females (R2=0.90). However,
the biological relevance of this model remained
unclear during a second period of moulting and mating
where empirical observations were missing." name="eprints.abstract" />
<meta content="2004-07" name="eprints.date" />
<meta content="published" name="eprints.date_type" />
<meta content="Marine Biology" name="eprints.publication" />
<meta content="145" name="eprints.volume" />
<meta content="1" name="eprints.number" />
<meta content="179-190" name="eprints.pagerange" />
<meta content="10.1007/s00227-004-1298-6" name="eprints.id_number" />
<meta content="UNSPECIFIED" name="eprints.thesis_type" />
<meta content="TRUE" name="eprints.refereed" />
<meta content="http://dx.doi.org/10.1007/s00227-004-1298-6" name="eprints.official_url" />
<meta content="Addison JT (1995) Influence of behavioural interactions on lobster
distribution and abundance as inferred from pot-caught samples.
ICES Mar Sci Symp 199:294-300
Arreguin-Sanchez F (1996) Catchability: a key parameter for fish
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1489
Campbell A, Noakes DJ, Elner RW (1991) Temperature and lobster,
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Sci 48:2073-2082
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Mer 37:186-191
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the effect of temperature. Can J Fish Aquat Sci 45:1145-1153
Frusher SD, Hoenig JM (2001) Impact of size related dominance
hierarchies on selectivity of traps for southern rock lobster
(Jasus edwardsii). Can J Fish Aquat Sci 58:2482-2489
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fertilisation in the southern temperate rock lobster Jasus edwardsii
(Hutton) (Decapoda: Palinuridae). J Exp Mar Biol Ecol
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lobster Jasus edwardsii (Decapoda: Palinuridae) in northern
New Zealand. Mar Biol 103:303-310
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edwardsii (Hutton, 1975). Crustaceana 66:341-355
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catchability of rock lobster Jasus lalandii at Robben Island
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48:967-980
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level and diel pattern of activity in the European lobster
Homarus gammarus. Mar Ecol Prog Ser 186:255-264
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late spring versus autumn. In: Von Vaupel Klein JC,
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lobster, Homarus americanus, off northeastern Cape Breton
Island, Nova Scotia. J Shellfish Res 16:383-394
Turner K., Gardner C, Swain R (2002) Onset of maturity in male
southern rock lobsters Jasus edwardsii in Tasmania, Australia.
Invert Reprod Dev 42:129-135
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population estimates of the Portunid crab Scylla serrata. Mar
Biol 71:187-192
Ziegler PE, Frusher SD, Johnson CR, Gardner C (2002a) Catchability
of the southern rock lobster Jasus edwardsii: I. Effects of
sex, season and catch history. Mar Freshw Res 53:1143-1148
Ziegler PE, Johnson CR, Frusher SD, Gardner C (2002b) Catchability
of the southern rock lobster Jasus edwardsii: II. Effects of
size. Mar Freshw Res 53:1149-1159
Zoutendyk P (1988) Consumption rates of captive rock lobster
Jasus lalandii. S Afr J Mar Sci 6:267-271" name="eprints.referencetext" />
<meta content="Ziegler, Philippe E. and Haddon, Malcolm and Frusher, Stewart D. and Johnson, Craig R. (2004) Modelling seasonal catchability of the southern rock lobster Jasus edwardsii by water temperature, moulting, and mating. Marine Biology, 145 (1). pp. 179-190." name="eprints.citation" />
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Jasus edwardsii by water temperature, moulting, and mating
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<meta content="Ziegler, Philippe E." name="DC.creator" />
<meta content="Haddon, Malcolm" name="DC.creator" />
<meta content="Frusher, Stewart D." name="DC.creator" />
<meta content="Johnson, Craig R." name="DC.creator" />
<meta content="270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)" name="DC.subject" />
<meta content="Seasonal variation in catchability of legal-sized
male and female southern rock lobster Jasus edwardsii in
a scientific reserve in south-east Tasmania, Australia,
over a 15-month period was described by modelling the
effects of water temperature, moulting and mating.
Seasonal changes in water temperature described 62% of
the variation of catchability for males, but were a poor
predictor of catchability for females outside winter. Both
moulting and mating was highly synchronised, although
males and females moulted at different times of the year.
This had a significant sex-specific effect on catchability,
because the models developed here indicate that feeding
and therefore catchability is decreased during moulting
and mating and followed by an increased food consumption
to compensate for the lack of feeding during
these periods. Gaussian probability density functions
were used to represent the timing and intensity of moulting,
mating and subsequent compensation periods,
and were combined with the description of seasonal
temperature changes. Four Gaussian functions in
agreement with independent biological data considerably
improved the model fits for the catchability of
males (R2=0.84). Adding a single Gaussian function to
the temperature model, representing a combined moulting
and mating period, provided a good fit to the
variation in catchability of females (R2=0.90). However,
the biological relevance of this model remained
unclear during a second period of moulting and mating
where empirical observations were missing." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Modelling seasonal catchability of the southern rock lobster Jasus edwardsii by water temperature, moulting, and mating</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Ziegler, Philippe E.</span> and <span class="person_name">Haddon, Malcolm</span> and <span class="person_name">Frusher, Stewart D.</span> and <span class="person_name">Johnson, Craig R.</span> (2004) <xhtml:em>Modelling seasonal catchability of the southern rock lobster Jasus edwardsii by water temperature, moulting, and mating.</xhtml:em> Marine Biology, 145 (1). pp. 179-190.</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/1116/1/2004_Ziegler%2C_Haddon%2C_Frusher_%26_Johnson_Mar_Biol.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1116/1/2004_Ziegler%2C_Haddon%2C_Frusher_%26_Johnson_Mar_Biol.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />375Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="1393" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1007/s00227-004-1298-6">http://dx.doi.org/10.1007/s00227-004-1298-6</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">Seasonal variation in catchability of legal-sized
male and female southern rock lobster Jasus edwardsii in
a scientific reserve in south-east Tasmania, Australia,
over a 15-month period was described by modelling the
effects of water temperature, moulting and mating.
Seasonal changes in water temperature described 62% of
the variation of catchability for males, but were a poor
predictor of catchability for females outside winter. Both
moulting and mating was highly synchronised, although
males and females moulted at different times of the year.
This had a significant sex-specific effect on catchability,
because the models developed here indicate that feeding
and therefore catchability is decreased during moulting
and mating and followed by an increased food consumption
to compensate for the lack of feeding during
these periods. Gaussian probability density functions
were used to represent the timing and intensity of moulting,
mating and subsequent compensation periods,
and were combined with the description of seasonal
temperature changes. Four Gaussian functions in
agreement with independent biological data considerably
improved the model fits for the catchability of
males (R2=0.84). Adding a single Gaussian function to
the temperature model, representing a combined moulting
and mating period, provided a good fit to the
variation in catchability of females (R2=0.90). However,
the biological relevance of this model remained
unclear during a second period of moulting and mating
where empirical observations were missing.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Additional Information:</th><td valign="top" class="ep_row">The original publication is available at www.springerlink.com</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Jasus edwardsii, southern rock lobster</td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/270702.html">270000 Biological Sciences > 270700 Ecology and Evolution > 270702 Marine and Estuarine Ecology (incl. Marine Ichthyology)</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1116</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Professor Craig R. Johnson</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">31 May 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">04 Feb 2008 16:23</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1116;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=1116">item control page</a></p>
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