Field and laboratory pilot rearing experiments with early ontogenic stages of Concholepas concholepas (Gastropoda: Muricidae)

Manríquez, Patricio H.; Delgado, Antonio; Jara, María Elisa; Castilla, Juan Carlos

doi:10.1016/j.aquaculture.2008.03.031

Cited by 30 publications

(17 citation statements)

References 23 publications

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“…1 to 3 mm for mussels and 2 to 4 mm for barnacles. Metamorphosis and generation of new teloconch in C. concholepas only takes place after prey is accessible (35)(36)(37).…”

Section: Methodsmentioning

confidence: 99%

“…Shell coloration of early postmetamorphic and small juveniles of C. concholepas were measured in specimens metamorphosed from competent pelagic larvae. During October 2006, competent larvae (Ϸ1,700 -1,900 m) were caught from the near shore plankton and induced to metamorphose and grow in the laboratory using prey showing contrasting external coloration and commonly present in rocky intertidal habitats where natural settlement of Concholepas takes place (35)(36)(37)(38). The mussel P. purpuratus and the barnacle N. flosculus were used as dark and light colored prey items respectively.…”

Section: Methodsmentioning

confidence: 99%

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Adaptive shell color plasticity during the early ontogeny of an intertidal keystone snail

Manríquez

Lagos

Jara

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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We report a mechanism of crypsis present during the vulnerable early post-metamorphic ontogeny (≤20 mm peristomal length) of the muricid snail Concholepas concholepas , a rocky shore keystone predator characteristic of the southeastern Pacific coast. In the field, we found a significant occurrence (>95%) of specimens bearing patterns of shell coloration (dark or light colored) that matched the background coloration provided by patches of Concholepas ' most abundant prey (mussels or barnacles respectively). The variation in shell color was positively associated with the color of the most common prey ( r = 0.99). In laboratory experiments, shell coloration of C. concholepas depended on the prey-substrate used to induce metamorphosis and for the post-metamorphic rearing. The snail shell color matched the color of the prey offered during rearing. Laboratory manipulation experiments, switching the prey during rearing, showed a corresponding change in snail shell color along the outermost shell edge. As individuals grew and became increasingly indistinguishable from the surrounding background, cryptic individuals had higher survival (71%) than the non cryptic ones (4%) when they were reared in the presence of the predatory crab Acanthocyclus hassleri . These results suggest that the evolution of shell color plasticity during the early ontogeny of C. concholepas , depends on the color of the more abundant of the consumed prey available in the natural habitat where settlement has taken place; this in turn has important consequences for their fitness and survivorship in the presence of visual predators.

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“…1 to 3 mm for mussels and 2 to 4 mm for barnacles. Metamorphosis and generation of new teloconch in C. concholepas only takes place after prey is accessible (35)(36)(37).…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Adaptive shell color plasticity during the early ontogeny of an intertidal keystone snail

Manríquez

Lagos

Jara

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

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“…As a control group, we used beakers without prey (n = 10). S. algosus were used in Treatment 1 because they induce settlement in Concholepas concholepas (Manríquez et al 2004(Manríquez et al , 2008(Manríquez et al , 2009 and are the preferred prey for early post-metamorphic C. concholepas under laboratory and field conditions (Dye 1991, Mén-dez & Cancino 1990. Rocks with N. scabrosus were used because small settlers of C. concholepas (ca.…”

Section: Methodsmentioning

confidence: 99%

Behavioural traits of competent Concholepas concholepas (loco) larvae

Manríquez

Castilla²

2011

Mar. Ecol. Prog. Ser.

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Swimming activity of competent Concholepas concholepas (Bruguière, 1789) larvae, under different photoperiod, water turbulence and settlement cues were investigated in laboratory experiments. At night, larvae mainly swam to the water surface and then sank passively to the bottom. During the day, regardless of the photoperiod, larvae mainly stayed on the bottom, occasionally exhibiting upward movements. During the swimming period, larvae displayed the capacity to adhere to floating substrata through several mechanisms, including the secretion of a long and sticky mucous thread, air bubble capture or taking advantage of the water tension. The presence of C. concholepas prey, such as the mussel Semimytilus algosus and the chthamaloid barnacle Notoch thamalus scabrosus, significantly influenced the swimming activity of competent C. concholepas larvae, inducing them to stay close to the bottom where prey were present. C. concholepas prey also triggered the initiation of larvae crawling, a characteristic of the early benthic life of C. concholepas. Although our laboratory experiments are proxies of nature, they are in good agreement with field observations in shallow nearshore areas (< ca. 0.5 km from shore) that recorded higher abundances of competent C. concholepas larvae (which are often associated with floating substrata) captured by surface planktonic tows during the night rather than day. Similarly, competent C. concholepas larvae abundances were higher in tows through inner nearshore foam slicks than in non-slick areas. The results suggest that the presence of endogenous swimming behaviour in these larvae may be a key factor enhancing adherence to floating substrata. The laboratory discovery of vertical buoyancy provides new information leading to a better understanding of the distribution and abundance patterns of these larvae in inner nearshore waters.

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“…The advantage of using C. concholepas as a biological model for investigating connectivity is the presence of 3 discrete life stages: (1) a pre-dispersal phase that lasts approximately 2 mo, where embryos develop inside egg capsules attached to the rocks in intertidal and subtidal environments, ending with the hatching of veliger larvae (Gallardo 1973); (2) a 3 mo pelagic dispersal phase culminating in settlement and metamorphosis, as advective processes and larval behavior potentially influence the return of larvae to shore (Poulin et al 2002, Manríquez & Castilla 2011and (3) small benthic recruits that are easy to identify and collect in intertidal habitats (Manríquez et al 2004(Manríquez et al , 2008(Manríquez et al , 2009. Theoretically the long intra-capsular, pre-dispersal period at the natal site allows trace elements present in the seawater to be incorporated into the developing larval statoliths, and therefore permanently tag these structures with an elemental fingerprint of the birth location.…”

Section: Abstract: Chilean Coast · Statolith Microchemistry · Trace mentioning

confidence: 99%

“…1). We employed a 3 mo interval between field collection of egg capsules and recruits in each region to account for the average pelagic larval duration of C. concholepas, and thus to ensure that recruits originated from the same birth cohorts as the larvae (DiSalvo 1988, Manríquez et al 2008. After collection, recruits were labeled, frozen, and stored until the statoliths were extracted (see next subsection).…”

Section: Field Collection Of Recruitsmentioning

confidence: 99%

Geographic variation in trace-element signatures in the statoliths of near-hatch larvae and recruits of Concholepas concholepas (loco)

Manríquez¹,

Galaz²,

Opitz³

et al. 2012

Mar. Ecol. Prog. Ser.

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Field and laboratory pilot rearing experiments with early ontogenic stages of Concholepas concholepas (Gastropoda: Muricidae)

Cited by 30 publications

References 23 publications

Adaptive shell color plasticity during the early ontogeny of an intertidal keystone snail

Adaptive shell color plasticity during the early ontogeny of an intertidal keystone snail

Behavioural traits of competent Concholepas concholepas (loco) larvae

Geographic variation in trace-element signatures in the statoliths of near-hatch larvae and recruits of Concholepas concholepas (loco)

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