Spatial and annual variation in fecundity and oocyte atresia of yellowtail flounder, Limanda ferruginea, in U.S. waters

McElroy, W. D.; Wuenschel, Mark J.; Towle, Emilee K.; McBride, Richard S.

doi:10.1016/j.seares.2015.06.015

Cited by 14 publications

(9 citation statements)

References 59 publications

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“…In terms of habitats, winter flounder is structured as three populations that reside in estuaries, shelf areas, and offshore banks from New Jersey northward; yellowtail flounder is structured in three populations that reside in the New England offshore shelf areas and offshore banks, and summer flounder is a single population distributed in coastal waters and along the shelf in the warm temperate zone, from the Carolinas to Georges Bank. Stock-specific growth, maturity, and fecundity have been reported in both winter (McBride et al 2013;McElroy et al 2013) and yellowtail flounder (Klein-MacPhee 2002a;McElroy et al 2016). Winter flounder is an example of an extreme capital breeder that ovulates an entire annual fecundity at once (i.e.…”

Section: R a F Tmentioning

confidence: 99%

Measuring fish condition: an evaluation of new and old metrics for three species with contrasting life histories

Wuenschel

McElroy

Oliveira

et al. 2019

Can. J. Fish. Aquat. Sci.

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Measuring fish condition should link ecosystem drivers with population dynamics, if the underlying physiological basis for variations in condition indices are understood. We evaluated traditional (K, Kn, hepatosomatic index, gonadosomatic index, energy density, and percent dry weight of muscle (%DWM) and liver (%DWL)) and newer (bioelectrical impedance analysis (BIA) and scaled mass index (SMI)) condition indices to track seasonal cycles in three flatfishes — winter founder (Pseudopleuronectes americanus; three stocks), yellowtail flounder (Limanda ferruginea; three stocks), and summer flounder (Paralichthys dentatus; one stock) — with contrasting life histories in habitat, feeding, and reproduction. The %DWM and %DWL were good proxies for energy density (r2 > 0.96) and more strongly related to K, Kn, and SMI than to BIA metrics. Principal component analysis indicated many metrics performed similarly across species; some were confounded by size, sex, and maturity along PC1, while others effectively characterized condition along PC2. Stock differences were along PC1 in winter flounder, reflecting different sizes across stocks, whereas in yellowtail flounder differences occurred along PC2 related to condition. These comparisons, within and across species, highlight the broad applicability of some metrics and limitations in others.

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Section: R a F Tmentioning

confidence: 99%

Measuring fish condition: an evaluation of new and old metrics for three species with contrasting life histories

Wuenschel

McElroy

Oliveira

et al. 2019

Can. J. Fish. Aquat. Sci.

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“…Individual annual fecundity by some species can vary across two to three adjacent years (McElroy et al ., , ) and as much as 10 fold over longer periods (Lambert, ); however, the values for L . americanus were pooled among 3 years within both the historical and contemporary periods, which should have averaged out short‐term variations.…”

Section: Discussionmentioning

confidence: 99%

“…Collecting depths and latitudes varied between years (Table ), confounding these variables as main effects. Also, although a variety of fishes have lower fecundity at more northern latitudes (Press et al ., ; McBride et al ., ; McElroy et al ., ), L . americanus gonads in the northern management unit have not been examined and samples for both areas in the same year are probably needed to rigorously test for latitudinal effects.…”

Section: Discussionmentioning

confidence: 99%

“…Individual annual fecundity by some species can vary across two to three adjacent years (McElroy et al, 2013(McElroy et al, , 2016 and as much as 10 fold over longer periods (Lambert, 2008); however, the values for L. americanus were pooled among 3 years within both the historical and contemporary periods, which should have averaged out short-term variations. Temperature, which has been rising in the western North Atlantic Ocean in recent decades (Friedland & Hare, 2007), has been proposed to influence fecundity, but in the opposite direction than was observed here (i.e.…”

Section: F E C U N D I T Ymentioning

confidence: 99%

“…Collecting depths and latitudes varied between years (Table I), confounding these variables as main effects. Also, although a variety of fishes have lower fecundity at more northern latitudes (Press et al, 2014;McBride et al, 2015;McElroy et al, 2016), L. americanus gonads in the northern management unit have not been examined and samples for both areas in the same year are probably needed to rigorously test for latitudinal effects. Management units for this species are defined by the different fishing fleets operating in each area, rather than biological evidence of stock structure (Haring & Maguire, 2008); however, a latitudinal gradient in temperatures and measures of productivity exist between these areas (McBride, 2014), which may manifest in fecundity differences at that spatial scale.…”

Section: F E C U N D I T Ymentioning

confidence: 99%

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Goosefish Lophius americanus fecundity and spawning frequency, with implications for population reproductive potential

McBride

Johnson

Lindsay

et al. 2017

Journal of Fish Biology

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To improve knowledge of goosefish Lophius americanus' reproductive biology, females were collected during 2009-2012 from the Mid-Atlantic Bight shelf region of the U.S. east coast. Batch fecundity increased with total length (L ), from 229 100 to 2 243 300 mature oocytes per female (L range: 55·5-112 cm; n = 54). This estimate of fecundity at L is lower than one derived from a sample collected during 1982-1985. Examination of whole oocyte diameters in different months indicated that L. americanus is a serial spawner, releasing more than one egg veil per spawning season, as suspected or observed for other Lophius species. Seasonality of spawning was evident from whole oocytes and gonad histology, and from larval fish surveys spanning the U.S. north-east shelf, and confirmed a protracted (c. 6 months) spawning period. Peak spawning activity progressed northward from spring to autumn. The population-level implications of these results were explored by estimating population reproductive potential (P ), which considered the value of both current and future per capita reproduction using decade-specific age structure and fecundity at length. P is now more than 50% lower compared with the historical period (1982-1985), a result of the lower proportions of large females and reduced fecundity across all sizes. Mechanisms that could explain this loss of stock productivity are fishing-induced size-age truncation or regime shifts in egg production caused by changes in energy density of common forage species.

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

et al. 2022

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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.

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Spatial and annual variation in fecundity and oocyte atresia of yellowtail flounder, Limanda ferruginea, in U.S. waters

Cited by 14 publications

References 59 publications

Measuring fish condition: an evaluation of new and old metrics for three species with contrasting life histories

Measuring fish condition: an evaluation of new and old metrics for three species with contrasting life histories

Goosefish Lophius americanus fecundity and spawning frequency, with implications for population reproductive potential

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

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