Larval Development of the Intertidal Barnacles Jehlius Cirratus and Notochthamalus Scabrosus (Cirripedia: Chthamalidae) Under Laboratory Conditions

Venegas, Roberto M.; Ortíz, Verónica Alejandra Salame; Olguín, Andrés; Navarrete, Sergio A.

doi:10.1651/0278-0372(2000)020[0495:ldotib]2.0.co;2

Cited by 17 publications

(20 citation statements)

References 12 publications

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“…Similarly, in this study we show 2 SAP barnacle species respond differentially to the coastal environment. Although these species have a more recent phylogenetic relationship than those in the above studies and much greater biological similarity, they may also differ in larval development time in the field (Venegas et al 2000), and perhaps in vertical swimming behavior during development. However, there remains a striking signal for restricted gene flow between southern and northern populations of Notochthamalus scabrosus, and only a marginal signal for isolation by distance in the confamilial Jehlius cirratus (a relative uniformity that holds up even when some additional samples from ~600 km to the south of Pichilemu are included; J. P. Wares unpubl.…”

Section: Discussionmentioning

confidence: 87%

“…Extension of geographic sampling will be necessary to fully characterize this transition, as both N. scabrosus and Jehlius cirratus are distributed along most of the South American coast from Ecuador to Chile (Brattström & Johanssen 1983, Venegas et al 2000. Microhabitat analysis (Power et al 1999, Wares & Castañeda 2005 may indicate the roles of environment and gregariousness among species and lineages in maintaining this pattern.…”

Section: Discussionmentioning

confidence: 99%

“…These confamilial species were chosen because they compete for space and other resources (López & González 2003), and like other sessile intertidal species, their sole opportunity for dispersal is the larval phase. Differences in their intertidal distribution (N. scabrosus is more abundant in the upper part of the mid-intertidal, while J. cirratus is most abundant throughout the high intertidal zone; Stephenson & Stephenson 1972, Navarrete & Castilla 1990) and slight differences in their larval dispersal phase (~8 to 10 d additional development time in N. scabrosus;Venegas et al 2000) may influence the connectivity of coastal populations across the recruitment break noted above. Marko (2004) suggested that what appear to be slight differences in the ecology and microhabitat of a species may predict large differences in the historical response of a species to climate change.…”

Section: Introductionmentioning

confidence: 99%

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Restricted gene flow in Chilean barnacles reflects an oceanographic and biogeographic transition zone

Zakas¹,

Binford²,

Navarrete³

et al. 2009

Mar. Ecol. Prog. Ser.

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Broad scale patterns of genetic structure in coastal communities are strongly affected by both ecological transitions and larval dispersal. Along the Chilean coast, we examined 2 species of co-distributed barnacles, Jehlius cirratus and Notochthamalus scabrosus, which span an ecological transition associated with a sharp increase in larval recruitment. A distinct break in haplotype frequencies in the mitochondrial cytochrome oxidase I (mtCOI) gene was detected in N. scabrosus, with only marginal genetic structure observed in J. cirratus, suggesting significant differences in either selective pressures or dispersal ability between the species. The nuclear gene elongation factor 1α was also analyzed in N. scabrosus, and similarly suggested limited gene flow. The sharp genetic transition is downstream of the described ecological transition, effectively mirroring a genetic cline described in a different barnacle species along the North American Pacific coast.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Restricted gene flow in Chilean barnacles reflects an oceanographic and biogeographic transition zone

Zakas¹,

Binford²,

Navarrete³

et al. 2009

Mar. Ecol. Prog. Ser.

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“…Settlement occurs throughout the year in all species, with major peaks in summer (December-February) and fall (March-May) months in the case of P. purpuratus and B. granulata and summer and, secondarily, winter months (June-August) in the case of S. algosus (this study). Larvae of the two chthamaloid barnacles reach competent cyprid stage between 20 and 31 d from release (Venegas et al 2000). Settlement of barnacles is more discrete than that of mussels, occurring as one or a few pulses between spring and summer months.…”

Section: Methodsmentioning

confidence: 99%

Recruitment of intertidal invertebrates in the southeast Pacific: Interannual variability and the 1997–1998 El Niño

Navarrete

Broitman

Wieters

et al. 2002

Limnology & Oceanography

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We evaluated interannual variability and the effect of the 1997-1998 El Niño event on recruitment of intertidal mussels and barnacles along the coast of central Chile in the southeast Pacific. Monthly monitoring of recruitment at 11 sites spread over 900 km (29-34ЊS) during the 1997-1998 El Niño and over the same months in 1998-1999 and 1999-2000 allowed us to assess geographic patterns in interannual recruitment variation. The geographically most consistent interannual trend was observed for the mussel Perumytilus purpuratus, which showed overall lower recruitment rates during the 1997-1998 El Niño year. However, the magnitude of the effect at any given site was small. Interannual variation in recruitment rates of the other two intertidal mussel species, as well as two chthamaloid barnacles, were not consistent across the region, and overall, few sites exhibited significant differences among years. Differences between two and three orders of magnitude in mean annual recruitment of mussels and barnacles were observed among sites, yet the relative ranking of sites was fairly similar among years for most species. Contrary to the large positive effect that the 1997-1998 El Niño had on barnacle recruitment along the coast of central and northern California, our results show that recruitment of dominant intertidal barnacles along central Chile were not significantly altered by this strong oceanographic event. Lack of consistent trends among sites emphasizes the need to study several sites when looking at large-scale oceanographic anomalies and shows that El Niño effects on interannual recruitment variation are not predictable.

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“…The negative relationship between temporal correlation and distance among pairs of sites suggested by a spatial synchrony pattern was significant only for species with both planktonic larvae and high settlement rates along the study region. Although at the temperatures recorded during our study (see Lagos et al 2005), duration of the planktonic larval phase for the 4 species showing synchrony could be >1 mo (Ramorino & Campos 1979, Venegas et al 2000, O'Connor et al 2007), scales of larval dispersal were adequately resolved by the spatial and temporal resolution of our study. All 4 species showed a similar distance-dependent decay in recruitment synchrony, with a switch from positively correlated fluctuations for sites separated by < 30 km to negatively correlated fluctuations for sites > 40 km apart.…”

Section: Discussionmentioning

confidence: 78%

Spatial synchrony in the recruitment of intertidal invertebrates along the coast of central Chile

Lagos¹,

Tapia²,

Navarrete³

et al. 2007

Mar. Ecol. Prog. Ser.

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Recruitment is among the processes that most directly influence spatio-temporal patterns of abundance, productivity, and persistence in marine populations. Understanding the connection between patterns of recruitment and environmental forcing has major implications for the conservation and management of marine ecosystems. Theoretical and empirical studies have shown that dispersal and regional variability in environmental conditions may synchronize distant populations and generate patterns of spatial synchrony (i.e. decay in synchrony with distance). Here, we submit that recruitment synchrony patterns may be used to identify processes shaping the distribution of marine populations. We used artificial substrates to estimate patterns of spatial synchrony in recruitment for 15 intertidal invertebrates at 16 exposed rocky platforms spanning 120 km of the central coast of Chile. Clear and significant synchrony patterns were found for only 4 species: the barnacles Jehlius cirratus, Notochthamalus scabrosus, and Notobalanus flosculus, and the bivalve Perumytilus purpuratus, all of which occur at comparatively high abundance across the study region. The strength of synchrony decayed with distance, from positively correlated fluctuations for sites separated by < 30 km, to negatively correlated for sites > 40 km apart. Patterns of spatial synchrony in recruitment resembled those of fluctuations in sea surface temperature, suggesting that mesoscale processes such as coastal upwelling may shape recruitment patterns by way of modulating larval dispersal. A lack of clear synchrony patterns in the remaining species could be ascribed to their low abundance, or, for those with potentially limited larval dispersal (e.g. direct development), it could indicate our lack of adequate spatio-temporal resolution to detect recruitment variability at small scales.

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Larval Development of the Intertidal Barnacles Jehlius Cirratus and Notochthamalus Scabrosus (Cirripedia: Chthamalidae) Under Laboratory Conditions

Cited by 17 publications

References 12 publications

Restricted gene flow in Chilean barnacles reflects an oceanographic and biogeographic transition zone

Restricted gene flow in Chilean barnacles reflects an oceanographic and biogeographic transition zone

Recruitment of intertidal invertebrates in the southeast Pacific: Interannual variability and the 1997–1998 El Niño

Spatial synchrony in the recruitment of intertidal invertebrates along the coast of central Chile

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