The energetics of development of three congeneric seastars (Patiriella Verrill, 1913) with different types of development

Moreno, Guillermo and Hoegh-Guldberg, Ove (1999) The energetics of development of three congeneric seastars (Patiriella Verrill, 1913) with different types of development. Journal of Experimental Marine Biology And Ecology, 235 1: 1-20. doi:10.1016/S0022-0981(98)00031-8


Author Moreno, Guillermo
Hoegh-Guldberg, Ove
Title The energetics of development of three congeneric seastars (Patiriella Verrill, 1913) with different types of development
Formatted title
The energetics of development of three congeneric seastars (Patiriella Verrill, 1913) with different types of development
Journal name Journal of Experimental Marine Biology And Ecology   Check publisher's open access policy
ISSN 0022-0981
Publication date 1999-03-01
Sub-type Article (original research)
DOI 10.1016/S0022-0981(98)00031-8
Volume 235
Issue 1
Start page 1
End page 20
Total pages 20
Publisher Elsevier
Language eng
Subject 06 Biological Sciences
Formatted abstract
The energetics of development of three congeneric seastars (Patiriella, Verrill) with different modes of development were quantified and compared. The egg of the planktotroph (P. regularis) was much smaller in size (150 mu m) and had a lower energetic content (14.4 mJ) than those of the planktonic lecithotroph (P. calcar, 415 mu m, 410 mJ) and benthic lecithotroph (P. exigua, 390 mu m, 376 mJ). During development to metamorphosis the larvae of P.regularis showed an 861% mean increase in weight, while the larvae of P. calcar lost 38% of the egg weight and the larvae of P. exigua showed no changes in biomass. Respiration in all species increased soon after fertilisation and remained more or less constant from hatching to metamorphosis. For the two planktonic species respiration increased dramatically during and after settlement. The mean total metabolic expenditure measured through respiration was 149.5 mi for P. regularis, 99.4 mJ for P. calcar and 45.4 mJ for P. exigua. The energetic cost of producing a juvenile (energy for development per weight of juvenile) was 65.5 mJ mu g(-1) and 58.3 mJ mu g(-1) for the planktonic planktotroph and planktonic lecithotroph, respectively. The benthic lecithotroph had a much lower energy requirement per juvenile (26.3 mJ mu g(-1)). It was concluded that this difference was a function of the length of time of development and was not attributed to the benthic behaviour of the larvae of this species. The energy requirements and costs per day to metamorphosis were significantly higher for the planktotroph than for the lecithotrophs, who did not differ from each other. Although the energy needed to produce a juvenile (similar to 60 mJ mu g(-1)) is similar for the two planktonic species, the juvenile of the planktotroph is 40% smaller than the juvenile of the planktonic lecithotroph, and this is due to the marked contrast on the initial investment in the eggs by the adults. This suggests that eggs of the lecithotrophic species may contain extra provisions intended to increase juvenile size. (C) 1999 Elsevier Science B.V. All rights reserved.
Keyword Ecology
Marine & Freshwater Biology
Asteroidea
Development
Energetics
Lecithotrophy
Patiriella
Planktotrophy
Pagurus-bernhardus Decapoda
L Larvae Decapoda
Marine-invertebrates
Reproductive Energetics
Balanus-balanoides
Energy-balance
Genus Conus
Egg Size
Growth
Life
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Centre for Marine Studies Publications
 
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Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 13 Aug 2007, 10:55:36 EST