Effects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system

Abstract Coral-eating Crown-of-Thorns Sea stars (Acanthaster spp.) are major contributors to coral reef loss in the Indo-Pacific region. A release from food limitation of their planktotrophic larvae through enhanced pelagic productivity is one of the main hypothesis explaining population outbreaks (...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	S. Uthicke, M. Liddy, F. Patel, M. Logan, C. Johansson, M. Lamare
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/df0d3124040c4a29ba3017a3ba6aafe8
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:df0d3124040c4a29ba3017a3ba6aafe8
record_format	dspace
spelling	oai:doaj.org-article:df0d3124040c4a29ba3017a3ba6aafe82021-12-02T15:08:16ZEffects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system10.1038/s41598-017-19132-w2045-2322https://doaj.org/article/df0d3124040c4a29ba3017a3ba6aafe82018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-19132-whttps://doaj.org/toc/2045-2322Abstract Coral-eating Crown-of-Thorns Sea stars (Acanthaster spp.) are major contributors to coral reef loss in the Indo-Pacific region. A release from food limitation of their planktotrophic larvae through enhanced pelagic productivity is one of the main hypothesis explaining population outbreaks (‘nutrient limitation hypothesis’). To improve the understanding of these outbreaks we developed an automated flow- through larvae rearing system that maintained food (microalgae) at set levels over the course of four 15d experiments. This resulted in stable food concentrations in experimental tanks. Increased algae concentrations had a significant positive effect on larval development and size at 10 and 15 days post fertilization (dpf). Larvae densities had no effect at 10 dpf. At 15 dpf greater larvae densities were associated with declines in larvae size. Larval development was slowed under higher larvae densities. Thus, the effects of algae concentration and larvae density were additive at 15 dpf, with larvae under low densities at a given algae concentration being further developed than those under higher densities. The development of a flow-through system gives greater insight into the effect of algae and larvae concentrations on Acanthaster development, and the system can be applied to further test the nutrient-limitation hypothesis for present and future outbreaks.S. UthickeM. LiddyF. PatelM. LoganC. JohanssonM. LamareNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-12 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q S. Uthicke M. Liddy F. Patel M. Logan C. Johansson M. Lamare Effects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system
description	Abstract Coral-eating Crown-of-Thorns Sea stars (Acanthaster spp.) are major contributors to coral reef loss in the Indo-Pacific region. A release from food limitation of their planktotrophic larvae through enhanced pelagic productivity is one of the main hypothesis explaining population outbreaks (‘nutrient limitation hypothesis’). To improve the understanding of these outbreaks we developed an automated flow- through larvae rearing system that maintained food (microalgae) at set levels over the course of four 15d experiments. This resulted in stable food concentrations in experimental tanks. Increased algae concentrations had a significant positive effect on larval development and size at 10 and 15 days post fertilization (dpf). Larvae densities had no effect at 10 dpf. At 15 dpf greater larvae densities were associated with declines in larvae size. Larval development was slowed under higher larvae densities. Thus, the effects of algae concentration and larvae density were additive at 15 dpf, with larvae under low densities at a given algae concentration being further developed than those under higher densities. The development of a flow-through system gives greater insight into the effect of algae and larvae concentrations on Acanthaster development, and the system can be applied to further test the nutrient-limitation hypothesis for present and future outbreaks.
format	article
author	S. Uthicke M. Liddy F. Patel M. Logan C. Johansson M. Lamare
author_facet	S. Uthicke M. Liddy F. Patel M. Logan C. Johansson M. Lamare
author_sort	S. Uthicke
title	Effects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system
title_short	Effects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system
title_full	Effects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system
title_fullStr	Effects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system
title_full_unstemmed	Effects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system
title_sort	effects of larvae density and food concentration on crown-of-thorns seastar (acanthaster cf. solaris) development in an automated flow-through system
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/df0d3124040c4a29ba3017a3ba6aafe8
work_keys_str_mv	AT suthicke effectsoflarvaedensityandfoodconcentrationoncrownofthornsseastaracanthastercfsolarisdevelopmentinanautomatedflowthroughsystem AT mliddy effectsoflarvaedensityandfoodconcentrationoncrownofthornsseastaracanthastercfsolarisdevelopmentinanautomatedflowthroughsystem AT fpatel effectsoflarvaedensityandfoodconcentrationoncrownofthornsseastaracanthastercfsolarisdevelopmentinanautomatedflowthroughsystem AT mlogan effectsoflarvaedensityandfoodconcentrationoncrownofthornsseastaracanthastercfsolarisdevelopmentinanautomatedflowthroughsystem AT cjohansson effectsoflarvaedensityandfoodconcentrationoncrownofthornsseastaracanthastercfsolarisdevelopmentinanautomatedflowthroughsystem AT mlamare effectsoflarvaedensityandfoodconcentrationoncrownofthornsseastaracanthastercfsolarisdevelopmentinanautomatedflowthroughsystem
_version_	1718388220773793792

Effects of larvae density and food concentration on Crown-of-Thorns seastar (Acanthaster cf. solaris) development in an automated flow-through system

Ejemplares similares