Multi-decadal variation in size of juvenile Summer Flounder (Paralichthys dentatus) in Chesapeake Bay

Nys, Lauren N.; Fabrizio, Mary C.; Tuckey, Troy D.

doi:10.1016/j.seares.2015.12.001

Cited by 2 publications

(2 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, due to suboptimal higher water temperatures, some fish species can reduce their appetite and negatively affect growth (Benetti, Acosta, & Ayala, ). As in other species (e.g., P. dentatus ; Nys, Fabrizio, & Tuckey, ) large variations in growth were observed in our study. Our growth data appear to be lower when compared to the growth of wild‐caught juvenile (1 kg; Benetti et al., ) and slightly higher to cultured juvenile (250 g; Guartatanga, ) in the same period (about 365 days).…”

Section: Discussionsupporting

confidence: 84%

Early development and Juvenile Culture Technique of Speckled Flounder,Paralichthys woolmani(Jordan & Williams, 1897) under ambient seawater

et al. 2018

View full text Add to dashboard Cite

Summary The speckled flounder Paralichthys woolmani is a flatfish species found in Ecuadorian coastal waters, consumed by local coastal communities and likely an excellent candidate for aquaculture production in indoor facilities. This study describes the early development and culture technique of P. woolmani under experimental conditions. Broodstocks were obtained from the wild and kept under laboratory conditions for this study. A total of four effective spontaneous spawns were registered at water temperature of 24.1°C, resulting in 1.3 million eggs and 129.2 thousand newly hatched larvae. Larval pelagic life lasted 28 days post hatch. Survival at benthic juvenile stage ranged 0.3%–46.9%. Pseudoalbinism was present in all juvenile batches. However, different pigmentation patterns in juveniles were recovered with addition of semi‐moist diet. There was no presence of ectoparasites or abnormal eye migration. At 370 days post hatch, flatfish reached 294.6 ± 86.9 g of body weight. These results can be of practical use for optimizing culture conditions to increase the yield of P. woolmani in captivity.

show abstract

Section: Discussionsupporting

confidence: 84%

Early development and Juvenile Culture Technique of Speckled Flounder,Paralichthys woolmani(Jordan & Williams, 1897) under ambient seawater

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Intermediate salinities (12-17 psu) may also provide quality nursery habitat for summer flounder. Even though fewer juvenile summer flounder occurred in these regions, their relatively high condition indicates that juvenile summer flounder habitat may encompass a broader salinity range than traditionally recognized (~25-31 psu; Sackett et al 2008), particularly because lab-based (Malloy and Targett 1991) and field-based (Nys et al 2015) studies indicate no significant effect of salinity between 10 and 30 psu on feeding and growth of juvenile summer flounder.…”

Section: Environmental and Density Effectsmentioning

confidence: 88%

Nursery Habitat Quality Assessed by the Condition of Juvenile Fishes: Not All Estuarine Areas Are Equal

Schloesser

Fabrizio

2018

Estuaries and Coasts

Self Cite

View full text Add to dashboard Cite

High-quality nursery habitats support greater numbers of juveniles that survive to adulthood, but characteristics underlying highquality habitats remain elusive because their productivity varies spatially and temporally and may be species-specific. Fish condition is an energy-integrative measure of ecological interactions, stress, and activity within a habitat, such that juvenile fish condition is representative of the quality of nursery habitats. We apply spatially explicit models to examine patterns in nursery habitat quality of Virginia estuaries based on nutritional condition for Atlantic croaker Micropogonias undulatus, summer flounder Paralichthys dentatus, and striped bass Morone saxatilis. Environmental factors (water temperature, dissolved oxygen, salinity, and depth) positively influenced the condition of Atlantic croaker but had mixed effects on striped bass and summer flounder condition, despite co-location of these species. Over the observed range of environmental conditions, the potential impact of salinity was 1.7 to 6 times that of other environmental factors. The condition of Atlantic croaker was negatively influenced by conspecific density, indicating local abundance mediates habitat quality. Regional habitat effects on fish condition were apparent after adjusting for broad-scale environmental effects: on average, striped bass condition was 22% greater in habitats near tributary mouths, Atlantic croaker condition was 28% greater in upestuary habitats, and the adjusted mean condition of summer flounder associated with coastal lagoons and the eastern side of Chesapeake Bay was 100% greater than conspecifics from other regions. Not all habitats are equally suitable for juvenile stages of estuarine species, but locations that produce wellconditioned individuals reveal the environmental characteristics associated with high-quality nursery habitats that contribute to species-specific productivity.

show abstract

Multi-decadal variation in size of juvenile Summer Flounder (Paralichthys dentatus) in Chesapeake Bay

Cited by 2 publications

References 59 publications

Early development and Juvenile Culture Technique of Speckled Flounder,Paralichthys woolmani(Jordan & Williams, 1897) under ambient seawater

Early development and Juvenile Culture Technique of Speckled Flounder,Paralichthys woolmani(Jordan & Williams, 1897) under ambient seawater

Nursery Habitat Quality Assessed by the Condition of Juvenile Fishes: Not All Estuarine Areas Are Equal

Contact Info

Product

Resources

About