A re-evaluation of the spawning fraction estimation procedures for Bay of Biscay anchovy, a species with short interspawning intervals

Uriarte, Andrés; Alday, Ana; Santos, Marquiony Marques dos; Motos, Lorenzo

doi:10.1016/j.fishres.2011.03.002

Cited by 15 publications

(19 citation statements)

References 28 publications

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“…With such a high frequency of batches, our results, i�e� that the probability of being in the spawning stage does not depend on fish size, are not surprising. These results are in contrast with the general patterns observed in indeterminate fecundity species, which shows that the spawning fraction is posi� tively size/age related �Claramunt et al, 2007;Ganias et al, 2007;Uriarte et al�, 2012). �owever, in species that spawn every day there is a boundary effect that obscures our interpretation�…”

Section: Figcontrasting

confidence: 57%

Variability in reproductive traits in the sex-changing fish, Coris julis, in the Mediterranean

2013

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The quantity and quality of propagules, i.e. reproductive output, play a key role in the dynamics of exploited populations, with particular implications for sex-changing fish. �ere, we studied for the first time the effects of maternal traits on the reproductive output of the Mediterranean rainbow wrasse Coris julis, a sequential hermaphroditic fish widely distributed in temperate marine coastal regions. The quantity of the reproductive output �batch fecundity) was significantly related to maternal size, which is of special interest in a species submitted to size-selective harvesting �recreational angling). �owever, egg quality �egg size) was not significantly related to any maternal factor and the spawning fraction was related to a seasonal pattern only. These results should contribute to improving estimations of the annual reproductive output and the stock assessment of this species� Certain implica� tions for management are discussed�

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Section: Figcontrasting

confidence: 57%

Variability in reproductive traits in the sex-changing fish, Coris julis, in the Mediterranean

2013

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“…Inter-spawning intervals are typically 2-4 days (Somarakis et al 2004b(Somarakis et al , 2011. Females can easily be assigned as to the day of spawning using the postovulatory follicle (POF) method (Ganias et al 2003;Somarakis et al 2011;Uriarte et al 2011). …”

Section: Introductionmentioning

confidence: 99%

Dynamics of de novo vitellogenesis in fish with indeterminate fecundity: an application of oocyte packing density theory to European anchovy, Engraulis encrasicolus

et al. 2011

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De novo vitellogenesis is common among teleosts; however, its dynamics and the timing of batch recruitment are poorly understood. In this study, we combine a suite of methods and theories in fish reproductive biology (oocyte packing density, stereology, ovarian allometry, oocyte size frequencies and postovulatory follicle [POF] ageing) to reconstruct the steps and timing of batch recruitment in European anchovy. Using general linear modelling to standardize oocyte numbers, we demonstrate that the fractions of primary growth, cortical alveoli and vitellogenic oocytes in the ovary are relatively stable in females with migratory nucleus oocytes (MN) or with POFs 1 and 2 days old (POF-1 and POF-2), but they change abruptly at hydration. These results imply that batch recruitment in European anchovy occurs in pulses of very short duration (less than a day). The standing crop of vitellogenic oocytes in MN, POF-1 and POF-2 females equals the number of eggs contained in two mature batches.

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“…Regarding final maturation, only incipient stages of final maturation and hydrated oocytes were observed in the sea bream ovaries (samples collected in the morning), whereas oocytes in advanced nucleus migration were not recorded. This implies a daily spawning synchronicity (probably in the early night) and a time interval from initiation of final maturation to spawning of approximately 1.5 d (Uriarte et al 2012).…”

Section: Histological Observationsmentioning

confidence: 99%

“…Such females occurred from December to March, with varying fractions among farms and months (Table 3). From December to February, most of these actively spawning fish had more than 2 spawning markers in their ovaries (Table 3), indicating a high individual inter-spawning interval for these fish (Uriarte et al 2012). For example, all fish with hydrated oocytes in Farm 1 in December also had both POFs and incipient final maturation oocytes in their ovaries, which implied that they were most likely spawning every day.…”

Section: Spawning-capable Femalesmentioning

confidence: 99%

Evidence for ‘escape through spawning’ in large gilthead sea bream Sparus aurata reared in commercial sea-cages

Somarakis¹,

Pavlidis²,

Saapoglou³

et al. 2013

Aquacult. Environ. Interact.

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A re-evaluation of the spawning fraction estimation procedures for Bay of Biscay anchovy, a species with short interspawning intervals

Cited by 15 publications

References 28 publications

Variability in reproductive traits in the sex-changing fish, Coris julis, in the Mediterranean

Variability in reproductive traits in the sex-changing fish, Coris julis, in the Mediterranean

Dynamics of de novo vitellogenesis in fish with indeterminate fecundity: an application of oocyte packing density theory to European anchovy, Engraulis encrasicolus

Evidence for ‘escape through spawning’ in large gilthead sea bream Sparus aurata reared in commercial sea-cages

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