Behavioural, Morphological and Genetic Changes in Some North Atlantic Populations of the Barnacle Semibalanus Balanoides

Bourget, Edwin; Martel, Nadine; Lapointe, Louise; Bussières, D.

doi:10.1007/978-3-642-75115-8_5

Cited by 7 publications

(19 citation statements)

References 17 publications

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“…Earlier studies (Bourget et al 1989, Martel 1990, Holm & Bourget 1994 of Semibalanus balanoides on the east coast of North America have shown the presence of 2 contiguous 'populations'. Based on regional scale studies, Drouin et al (2002), Dufresne et al (unpubl.…”

Section: Selection On Newly Settled Spatmentioning

confidence: 95%

“…Semibalanus balanoides, the common boreoarctic intertidal barnacle, is found on both sides of the Atlantic and on the western Pacific coast of America (Bourget et al 1989). Along the western Atlantic coast, it extends from Greenland and the Canadian Arctic to North Carolina (Barnes & Barnes 1976).…”

Section: Introductionmentioning

confidence: 99%

“…Genetic studies of Semibalanus balanoides along the western Atlantic coast of North America and Gulf of St. Lawrence indicate there are 2 distinct populations (Bourget et al 1989). From observations at a limited number of stations, Bourget et al (1989) suggested that barnacles from the western Gulf were larger and their post-settlement growth rate was higher than barnacles from the Atlantic shores.…”

Section: Introductionmentioning

confidence: 99%

“…From observations at a limited number of stations, Bourget et al (1989) suggested that barnacles from the western Gulf were larger and their post-settlement growth rate was higher than barnacles from the Atlantic shores. Moreover, western Gulf cypris larvae (Capucins, Québec) behaved differently from Atlantic larvae (St. Andrews, New Brunswick), in such a way that the former settled preferentially (> 95%) in crevices and the latter settled mainly on exposed surfaces (see Bergeron & Bourget 1986, Chabot & Bourget 1988).…”

Section: Introductionmentioning

confidence: 99%

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Fecundity, growth rate and survivorship at the interface between two contiguous genetically distinct groups of Semibalanus balanoides

Brind’Amour¹,

Bourget²,

Tremblay³

2002

Mar. Ecol. Prog. Ser.

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On the western coast of the Atlantic, according to the literature, 2 distinct groups of Semibalanus balanoides occur with a distinct interface near the Miramichi Estuary, New Brunswick, in the Gulf of St. Lawrence. On each side of this interface, the groups are characterized by clinal variations for MPI (mannose-6-phosphate isomerase) and GPI (glucose-6-phosphate isomerase). The present study was carried out to determine whether selection occurs at this interface, to establish how early in the sessile life period it occurs and to examine the selecting forces involved. Reciprocal transplant experiments of newly settled individuals to both sides of the interface were carried out. No significant differences specifically linked to source or destination were observed in growth or fecundity for the 2 groups at the sites studied for either control or transplanted individuals. However, differences in survival were observed; individuals transplanted south of the estuary showed lower survival than individuals transplanted north. An allozyme analysis of barnacle survivors for MPI and GPI, 2 alleles whose frequencies are known to vary abruptly in this region, indicated a change of allele frequency in transplanted individuals. The transplants' allele frequencies came to resemble those of adults from target sites, while no change occurred in transplanted individuals at control sites. Taken together with previous results, our study suggests that selection occurs very early in the newly settled individuals (spat).

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Section: Selection On Newly Settled Spatmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fecundity, growth rate and survivorship at the interface between two contiguous genetically distinct groups of Semibalanus balanoides

Brind’Amour¹,

Bourget²,

Tremblay³

2002

Mar. Ecol. Prog. Ser.

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“…Previous reports on the distribution of such larvae and on their recruitment on fixed collectors suggested a maximum dispersal range of the order of 10 to 20 km (Southward 1962, Crisp 1978, Southgate & Myers 1985, Ardisson et al 1990, Bourget 1990). The horizontal pattern of larval distribution observed in the present study clearly shows that the overall abundance of barnacle larvae decreases with increasing distance form the coast.…”

Section: Horizontal Distributionmentioning

confidence: 92%

Neustonic niche for cirripede larvae as a possible adaptation to long-range dispersal

Fèvre¹,

Bourget²

1991

Mar. Ecol. Prog. Ser.

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ABSTRACT. Fine-scale distribution of cirripede larvae was studied in the second half of July 1979 off the west coast of Brittany, France. The first ten 10 cm layers of water near the surface were sampled, as well as the whole water column. A significant proportion of the cyprid larvae of Verruca stroemia was observed to occupy a neustonic niche, while the vertical distribution of the nauplii was more uniform. Thls is taken as evidence that, prior to settlement, the late larval stages of this species actively select a near-surface habitat that ensures their dispersal over large areas. The nauplii and cypris were observed at stations near 100 km offshore, much farther than previously reported. The implication of these findings is that the long-distance dispersal of coastal species by meroplanktonic larvae may have been largely underestimated by neglecting to adequately sample the neustonic fauna.

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A commentary on current approaches in the aquatic sciences

Bourget

Fortin

1995

Hydrobiologia

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This paper reviews some of the current practices in limnology and oceanography and discusses ways to improve our habits in these fields . A survey of all 253 articles published in the journal Limnology and Oceanography in 1980, 1985 indicates that the majority of papers (>60%) were predominantly descriptive, only about 30% used an experimental approach . Of the 27% articles presenting models, only 3% validated these models using field data. Only one out of 253 papers presented biological criteria to reject hypotheses . We discuss the significance of descriptive studies in the fields of limnology and oceanography, the use of numerical techniques to detect spatio-temporal patterns in the data, the significance of reductionism in aquatic sciences, the introduction of ad hoc hypotheses, the problem of selecting study sites, stations, and sample locations in shore and pelagic studies, and strategies available when an experimental approach cannot be used because environmental factors cannot be controlled . ResumeL'auteur passe en revue quelques-unes des pratiques habituelles en limnologie et en oceanographie et discute des possibilites d'amdlioration dans ces domaines . L'examen de 253 articles parus dans le periodique Limnology and Oceanography en 1980, 1985 et 1990 montre que la majorte de ceux-ci (>60%) est 4 dominante descriptive, et que l' approche experimentale West utilisee que dans 30% des cas . Parmi les 27% d' articles presentant des modeles, seuls 3% valident ces modeles en utilisant des donnees de terrain . Un seul parmi les 253 articles presente des criteres biologiques de rejet des hypotheses. La discussion porte sur l'importance des etudes descriptives en limnologie et en oceanographie,1' emploi des techniques numeriques pour detecter des phdnomenes spatio-temporels dans les donnees, la signification du reductionnisme dans les sciences aquatiques, l'introduction d'hypotheses ad hoc, les criteres de choix des sites d'etudes, des stations et des echantillonnages dans les etudes littorales et pelagiques, et les strategies valables lorsqu'une approche experimentale ne peut etre employee en raison de facteurs environnementaux non controlables .

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Behavioural, Morphological and Genetic Changes in Some North Atlantic Populations of the Barnacle Semibalanus Balanoides

Cited by 7 publications

References 17 publications

Fecundity, growth rate and survivorship at the interface between two contiguous genetically distinct groups of Semibalanus balanoides

Fecundity, growth rate and survivorship at the interface between two contiguous genetically distinct groups of Semibalanus balanoides

Neustonic niche for cirripede larvae as a possible adaptation to long-range dispersal

A commentary on current approaches in the aquatic sciences

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