Reproductive ecology and size-dependent fecundity in the petrale sole (Eopsetta jordani) in waters of California, Oregon, and Washington

Lefebvre, Lyndsey S.; Friedlander, Cherisa L.; Field, John C.

doi:10.7755/fb.117.4.2

Cited by 4 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2018; Lefebvre et al. 2019). Fecundity scaling does not account for other reproductive attributes of large(r) females such as egg size or energy content, which can also have benefits for larval size and survival (Berkeley et al.…”

Section: Discussionmentioning

confidence: 99%

“…It emphasizes the importance of the largest females to the reproductive output of a population (Hixon et al 2014;Barneche et al 2018), although the scale of the impact on population reproductive output may only be ~10% when taking into account population demographics (Andersen et al 2019). The scaling of the fecundity and body size relationship has been found to vary, but nonisometric scaling with body size has been reported in a variety of fish taxa (Stafford et al 2014;Barneche et al 2018;Lefebvre et al 2019). Fecundity scaling does not account for other reproductive attributes of large(r) females such as egg size or energy content, which can also have benefits for larval size and survival (Berkeley et al 2004;Trippel and Neil 2004;Hixon et al 2014).…”

Section: Fecunditymentioning

confidence: 99%

See 1 more Smart Citation

Life History Assessment of Cusk, a Data‐Poor Species, in U.S. Waters

et al. 2022

View full text Add to dashboard Cite

Cusk Brosme brosme are fished across the northern Atlantic Ocean, but even basic biological data are limited in part by their difficult‐to‐sample deep and structured habitats. We sampled fish from a variety of sources across the Gulf of Maine to provide comprehensive life history information (age and size at maturity, fecundity, sex ratio, growth) for this data‐poor species considered by National Oceanic and Atmospheric Administration Fisheries as a species of concern. Gonad histology and gonadosomatic index data indicated peak spawning in late spring (May–June), with limited spawning activity into summer. The histologically derived length at 50% maturity for female Cusk was 39.5 cm TL. Fecundity varied from a quarter million to four million oocytes, with a positive allometry versus size indicating that larger females have proportionally higher fecundity than smaller females. Male Cusk had unusually low gonadal investment for a gadiform, and males of all sizes examined (down to 21 cm) had spermatozoa present. Male maturity was equivocal even when the relative proportions of sperm stages were quantified through image analysis of gonad histology; further anatomical and physiological studies of small males are required to assess functional maturity in male cusk. The sex ratio at length indicated more males at larger sizes, and males had faster growth and larger size at age than females. Condition patterns also suggested lower condition for females than males after spawning and generally less variable condition for males. Gonadal investment, relative condition, and growth patterns all suggest differences in energy allocation between the sexes. This data‐poor species has an uncertain stock status in U.S. waters; therefore, the results of the current work provide important information to its management.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Fecunditymentioning

confidence: 99%

Life History Assessment of Cusk, a Data‐Poor Species, in U.S. Waters

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Virtual eggs were released within the spawning ground identified by the analysis above. Egg production in each year was calculated as the sum product of the annual number of females at length, the proportion mature at length (Stawitz et al, 2015), and the fecundity at length (Hannah et al, 2002;Lefebvre et al, 2019). Then egg production in each year was allocated to each spawning area using the proportion of the estimated biomass in each spawning polygon from VAST analysis above (Table 2).…”

Section: Inferring Petrale Sole Spawning Grounds and Egg Productionmentioning

confidence: 99%

Petrale sole transboundary connectivity and settlement success: a biophysical approach

et al. 2023

View full text Add to dashboard Cite

Connectivity between inferred spawning areas and potential settlement areas of the petrale sole (Eopsetta jordani) was explored in the California Current System (CCS) using an individual-based model (IBM) coupled with the ROMS hydrodynamic model for the period 1988-2008. The IBM modeled pelagic early life stages, including egg and larval development, growth, natural mortality and settlement into benthos. Eggs were released within discrete spawning grounds identified from the winter fishery logbook data. Potential settlement areas were defined based on bathymetrical criteria and juvenile (2-year old) distribution from a groundfish bottom trawl survey. The influence of cross-shelf and alongshore advection on the transport and connectivity between spawning and benthic settlement areas was explored by identifying the location of juveniles (22 mm length) among the potential settlement areas. The most important spawning regions varied over time with between 4 and 19% of spawned individuals successfully settling, mostly ranging from off northern Washington to northern Oregon. The strong influence of northward alongshore transport resulted in transboundary transport of pelagic life stages from U.S. spawning grounds to inner shelf settlement areas in Canadian waters, with 33.9-70.4% (average 49.7 ± 9.6) of annual successful juveniles settling in Canada. Interannual variability in juvenile settlement success suggests that mesoscale (100-200 km) oceanographic structures play a major role defining pelagic juvenile transport trajectories. While, in some years, the presence of coastal cyclonic eddies can retain juveniles off Oregon, the strong northward transport supplies a large number of juveniles to Moresby and Vancouver island, clearly showing that petrale sole off the west coast of North America are a transboundary stock with important settlement areas off the coast of British Columbia, thus extension of this study into Canadian waters is particularly relevant.

show abstract