Variability of family size and marine survival in pink salmon (<i>Oncorhynchus gorbuscha</i>) has implications for conservation biology and human use

Geiger, Harold J.; Smoker, William W.; Zhivotovsky, Lev A.; Gharrett, Anthony J.

doi:10.1139/f97-154

Cited by 37 publications

(47 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This could lead to higher survival for larger smolts (e.g., Ward and Slaney 1988). The average egg-to-smolt survival in the hatchery was very high so most of the variation in reproductive success likely results from family-specific variation in survival at sea, as has been reported for other salmonid species (Geiger et al 1997;Unwin et al 2003).…”

Section: Discussionmentioning

confidence: 93%

Variation in reproductive success and effective number of breeders in a hatchery population of steelhead trout (Oncorhynchus mykiss): examination by microsatellite-based parentage analysis

et al. 2007

View full text Add to dashboard Cite

Conservation programs that release captivebred individuals into the wild to mix with naturally produced individuals are an increasingly common method of supporting or enhancing weak or reduced populations that otherwise may not be self-sustaining. Captive and supportive breeding can be important conservation tools for species with small or declining populations; however, in the case of hatcheries producing salmonid fishes, detailed evaluation of spawning programs is rare. We examined variation in reproductive success, measured by adult offspring production, from three parental generations of hatchery-bred steelhead trout (Oncorhynchus mykiss) using an exclusion-based method of genetic parentage assignment. Reproductive success varied greatly among individuals (especially males) and was correlated with fecundity and maternal spawning date. Estimates of egg to smolt survival for the population as a whole among years ranged from 64% to 95%, marine survival ranged from 0.32% to 2.30%, and the number of adults produced per female ranged from 0 to 18 and the number of adults produced per male ranged from 0 to 32. The effective number of breeders ranged from 11% to 31% of the census population size for that brood year. These ratios fell within estimates from estimates of Ne/N in chinook (O. tshawytscha) and rainbow trout (O. mykiss) hatchery populations.

show abstract

Section: Discussionmentioning

confidence: 93%

Variation in reproductive success and effective number of breeders in a hatchery population of steelhead trout (Oncorhynchus mykiss): examination by microsatellite-based parentage analysis

et al. 2007

View full text Add to dashboard Cite

show abstract

“…Further research will be necessary to determine the age dependency of mitochondrial DNA before its role in any kind of population analysis can be determined (Gauldie, 1991). The observed genetic structure may reflect cohorts (no geographic isolation) derived from a sweepstakes chance effect in which a few adult spawners successfully contribute offspring each season (Hedgecock, 1994b;Geiger et al, 1997). This hypothesis has been already pointed for Sebastes species, both in the Atlantic (Schmidt and Trautner, 2005) and in the Pacific (Matala et al, 2004).…”

Section: Genetic Differentiationmentioning

confidence: 99%

Review of the population structure and ecology of S. mentella in the Irminger sea and adjacent waters

Saborido-Rey

Garabana

Stransky

et al. 2004

Rev Fish Biol Fisheries

View full text Add to dashboard Cite

page 455 Introduction 455 Redfish spawning areas and time 458 Larvae and fry (0-group) distribution and drift patterns 459 Juvenile distribution, nursery areas, and migration pattern 463 Adult distribution 463 Genetic differentiation 471 Conclusions 474 Acknowledgements 475 References 475 AbstractSignificant controversies exist over the three types of Sebastes mentella found in the Irminger Sea and adjacent waters. Preliminary genetic studies have given evidence for the existence of three distinct groups, characterized using several molecular genetic markers. The biological or ecological significance of these between-group differences has, however, not been evaluated. In the present paper, we review the life cycle of S. mentella in this area, based on published data. Spawning of S. mentella in the Irminger Sea takes place in a single area above Reykjanes Ridge. The larvae drift towards East Greenland from where they are carried to West Greenland (NAFO Subareas 0+1). Later they return to East Greenland where the main nursery area has been identified. There is evidence for a migration of juvenile fish from the nursery area into the open Irminger Sea, where many different cohorts spawn. We also compare these ecological data with the genetic results and we conclude that the observed genetic differences can be derived from possible genetic drift, selection or mostly from temporal variation (age dependency) which has also been reported for other species with as high longevity as S. mentella. We conclude that S. mentella in the Irminger Sea and adjacent waters comprises one single population.

show abstract

“…Oil derived from the diet has been shown to cause growth impairment in pink salmon, prolonging their time of vulnerability to larger predators, which was linked to population-level effects (Geiger et al 1996, 1997; Sturdevant et al 1996). These data also show evidence that some Gulf killifish in oiled sites were exposed to toxicants from oil through their diet.…”

Section: Resultsmentioning

confidence: 99%

Biomarkers of Aryl-hydrocarbon Receptor Activity in Gulf Killifish (Fundulus grandis) From Northern Gulf of Mexico Marshes Following the Deepwater Horizon Oil Spill

Dubansky

Rice

Barrois³

et al. 2017

Arch Environ Contam Toxicol

View full text Add to dashboard Cite

Following the Deepwater Horizon oil spill, shorelines throughout the Barataria Basin of the northern Gulf of Mexico in Louisiana were heavily oiled for months with Macondo-252 oil, potentially impacting estuarine species. The Gulf killifish (Fundulus grandis) has been identified as a sentinel species for the study of site-specific effects of crude oil contamination on biological function. In November and December 2010, 4–5 months after the Macondo well was plugged and new oil was no longer spilling into the Gulf waters, Gulf killifish were collected across the Barataria Basin from 14 sites with varying degrees of oiling. Fish collected from oiled sites exhibited biological indications of exposure to oil, including increase in cytochrome P4501A (CYP1A) mRNA transcript and protein abundances in liver tissues. Immunohistochemistry revealed increases in gill, head kidney, and intestinal CYP1A protein at heavily oiled sites. Intestinal CYP1A protein was a sensitive indicator of exposure, indicating that intestinal tissue plays a key role in biotransformation of AHR ligands and that ingestion is a probable route of exposure, warranting additional consideration in future studies.

show abstract

Variability of family size and marine survival in pink salmon (Oncorhynchus gorbuscha) has implications for conservation biology and human use

Cited by 37 publications

References 21 publications

Variation in reproductive success and effective number of breeders in a hatchery population of steelhead trout (Oncorhynchus mykiss): examination by microsatellite-based parentage analysis

Variation in reproductive success and effective number of breeders in a hatchery population of steelhead trout (Oncorhynchus mykiss): examination by microsatellite-based parentage analysis

Review of the population structure and ecology of S. mentella in the Irminger sea and adjacent waters

Biomarkers of Aryl-hydrocarbon Receptor Activity in Gulf Killifish (Fundulus grandis) From Northern Gulf of Mexico Marshes Following the Deepwater Horizon Oil Spill

Contact Info

Product

Resources

About