Origin and Dispersion of Larval Herring (<i>Clupea harengus</i>) in Coastal Waters of Eastern Maine and Southwestern New Brunswick

Chenoweth, Stanley B.; Libby, D. A.; Stephenson, Robert L.; Power, Michael

doi:10.1139/f89-079

Cited by 16 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Townsend et al 1986, Kisrboe et al 1988, Chenoweth et al 1989, and as in the present study, Suthers et al (1989) showed an improved growth ability of cod larvae within the area of retention. The present findings point to the irnportance of a match between distribution of larvae and areadperiods that offers superior conditions for larval life, thus supporting the match/mismatch theory (Hjort 1926, Cushing 1972.…”

Section: Discussionsupporting

confidence: 82%

“…The retention of larvae in areas of tidal fronts has been described in a number of studies (e.g. herring: Kierboe et al 1988, Chenoweth et al 1989, Fortier & Gagne 1990cod: Suthers et al 1989), and the profitability of retention areas to larval growth and survival has been much debated. Based on the findings of herring larval distributions, a hypothesis of 'larval retention' was proposed by Iles & Sinclair (1982).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Differential growth of larval sprat Sprattus sprattus across a tidal front in the eastern North Sea

Munk¹

1993

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Spatial variations in abundance and growth of larval sprat Sprattus sprattus L. were examined across a tidal front in the eastern North Sea, off the west coast of Denmark. The aim of the study was to evaluate the potential advantage for sprat larvae of residing in the vicinity of a tidal front. The hydrographic front in the area followed the 20 to 30 m depth contour and separated a mixed water regime to the east and a stratified regime to the west. Primary production and phytoplankton abundance were lughest in the mixed water (>2000 mg C m-2 d -' and 150 mg chlorophyll m-2 respectively) and declined offshore towards stratified water. Zooplankton biomass peaked in the central parts of the investigated area in the vicinity of the front (up to 4 3 mg dry weight m-3). Peak densities of sprat larvae (>2 m-') were found in the front, in a water column stabhty range from 5 to 30 J m-3. The length distributions of larval sprat were dominated by modes of 12 and 16 mm, and growth rates of these 2 size classes were estimated from a Laird-Gompertz curve of larval size at age. Size at age of larvae was estimated by analysis of sagittal otoliths. Growth rate estimates were h~g h e s t in the mixed water (absolute growth of 12 mm larva: 0.47 mm d-'; weight-specific growth: 0.16 d -l ) . At the mixed side of the front, where larval abundance peaked, growth was slightly lower, whereas growth rate declined significantly further offshore (to a minimum for 16 mm larva of 0.13 mm d-l, weight-specific growth: 0.03 d-l). Growth rate of larvae was positively related to chlorophyll content of water (when < 110 mg m-2) and to the available prey biomass. In conclusion, both abundance and growth of larvae were connected to characteristics of the tidal front.

show abstract

Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Differential growth of larval sprat Sprattus sprattus across a tidal front in the eastern North Sea

Munk¹

1993

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

show abstract

“…Fronts (transition regions between mixed and stratified water masses) surrounding banks have also been suggested to form distinct zones of separation (between water masses) or aggregation (convergence zones) of larval fish and their prey ( Kingsford, 1990). In tidally energetic areas, tidal fronts ( sensu Pingree et al ., 1974 ) and variations therein are hypothesized to play a significant role in larval dispersal and possibly recruitment processes ( Iles and Sinclair, 1982; Sinclair and Iles, 1985; Heath et al ., 1988 ; Chenoweth et al ., 1989 ; Heath, 1990).…”

Section: Introductionmentioning

confidence: 99%

Observations on larval fish transport and retention on the Scotian Shelf in relation to geostrophic circulation

Reiss

Panteleev

Taggart

et al. 2000

Fisheries Oceanography

View full text Add to dashboard Cite

We draw inferences about the dynamic processes responsible for the dispersal of ichthyoplankton on small marine banks using physical and biological data derived from static point-estimates of water-mass characteristics and ichthyoplankton collected concomitantly on the central Scotian Shelf. Where the density ®eld evolves slowly and ageostrophic forcing is weak, the near-surface geostrophic¯ow can be derived from hydrographic data using the dynamic height method modi®ed for shallow seas. We assess our interpretations of larval distributions using simple particle tracking. The hydrography of the Scotian Shelf during November of 1997 was typical of late autumn, when density is determined by surface variation in salinity. Surface isopycnals generally paralleled isobaths, and there was no evidence of strong surface fronts. Sizes of larvae of pelagic origin (e.g. cod and hake) on Western Bank (sole spawning source) increased and became skewed towards larger animals (cod, 3±10 mm; hake, 5±15 mm) in water-mass (Temperature and Salinity) space along isopycnals, consistent with gradual mixing and limited transport in the geostrophic¯ow (i.e. retention). Conversely, larvae of benthic origin (e.g. herring, 6±25 mm) were distributed across water-mass space, consistent with multiple origins and substantial transport. Our results indicate that dispersal from small, low-energy marine banks results from the interaction of spawning location, geostrophic currents and bathymetric steering, and requires neither convergence nor larval behaviour.

show abstract

“…Kiarboe e t al. 1988, Chenoweth et al 1989, Fortier & Gagne 1990), a n d upwellings or fronts associated with coastal jet currents (e.g. Boyd & Smith 1983, Hutchings et al 1986, Smith e t al.…”

Section: Introductionmentioning

confidence: 99%

Export production and the distribution of fish larvae and their prey in a coastal jet frontal region

Fortier¹,

Levasseur²,

Drolet³

et al. 1992

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Fine-scale spatial sampling series and vertical cross-sections were used to obtain quasisynoptic images of the distribution of fish larvae and their prey in the permanent frontal region formed by the Gaspe coastal jet current and the adjacent Anticosti gyre (NW Gulf of St. Lawrence, Canada). The accumulation of large diatoms triggered the reproduction of copepods in the Gasp6 current where eggs and nauplii (the main prey of first-feeding fish larvae) were 10 to 20 times more abundant than in the gyre. Estuarine circulation resulted in the coincidence of the small and abundant larvae of capelin Mallotus villosus and sand lance Ammodytes sp. with this intense production of their food in the jet current. The large and less abundant larvae of redfish Sebastes sp. and Arctic shanny Stichaeuspunctatus exploited the scarcer food resources of the Anticosti gyre. We conclude that opportunistic species producing large numbers of small offspring with limited foraging skills depend on massive export production at hydrographic singularities (i.e. salient hydrographic features) for reproduction. Species producing fewer but larger and more competent larvae can colonize less productive areas of the ocean. Plankton dynamics in the dispersal area of the early larval stages appear to be a pnmary constraint defining the life strategy of a fish species.

show abstract

Origin and Dispersion of Larval Herring (Clupea harengus) in Coastal Waters of Eastern Maine and Southwestern New Brunswick

Cited by 16 publications

References 0 publications

Differential growth of larval sprat Sprattus sprattus across a tidal front in the eastern North Sea

Differential growth of larval sprat Sprattus sprattus across a tidal front in the eastern North Sea

Observations on larval fish transport and retention on the Scotian Shelf in relation to geostrophic circulation

Export production and the distribution of fish larvae and their prey in a coastal jet frontal region

Contact Info

Product

Resources

About