Maternal versus environmental constraints on the oocyte size of a marine pelagophil fish

Ganias, Konstantinos; Rakka, Maria; Mantzouki, Evanthia; Vavalidis, Theocharis; Tsinganis, M.; Nunes, Cristina

doi:10.1007/s00227-015-2719-4

Cited by 4 publications

(5 citation statements)

References 35 publications

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“…More specifically, 10 cm difference in maternal body length corresponded to a 0.030 mm increase in the diameter of hydrated oocytes. Similarly, Ganias et al (2015) found for the Atlantic sardine, Sardina pilchardus, that oocyte size was correlated with maternal size in hydrated ovaries but not in vitellogenic ovaries. The authors suggested that the observed stage-specific differences of the effect of maternal size on oocyte size were due to a functional relationship between the abdominal volume and ovarian size.…”

Section: Discussionmentioning

confidence: 65%

“…Variability in the weight of hydrated ovaries (Zwolinski et al, 2001) and in the growth patterns of hydrated oocytes (Ganias et al, 2011) have been used however to assess the daily spawning patterns of sardine off the Iberian peninsula. Both papers suggested synchronization of FOM amongst imminent spawners which helped elucidating the daily spawning pattern of the population (Bernal et al, 2011) and disentangling maternal effects on egg size (Ganias et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…This type of analysis further allows investigating the effect of additional predictors of preovulatory oocyte size such as year or body size (e.g. Ganias et al, 2015). An additional aim was to investigate possible critical developmental phases and microscopic descriptors during the hydration of Atlantic horse mackerel oocytes that could enhance the elucidation of its daily spawning pattern.…”

Section: Introductionmentioning

confidence: 99%

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Preovulatory follicle growth dynamics indicates daily spawning synchronicity in wild-caught Atlantic horse mackerel off Portugal

Mouchlianitis

Nunes

Costa

et al. 2018

Aquat. Living Resour.

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The Atlantic horse mackerel, Trachurus trachurus, is a commercially important species whose daily spawning dynamics are not yet fully understood. Existence of spawning synchronicity would facilitate application of the daily egg production method for estimating the spawning biomass of the southern stock of the species in the Northeast Atlantic. The intent of this work was to study preovulatory follicle (PREF) growth dynamics in wild Atlantic horse mackerel to determine the existence of daily spawning synchronicity in the population. The size and translucency of hydrated oocytes increased significantly between early morning and late afternoon; this pattern was the same for two study years. This morpho-developmental shift led to the appearance of previously indistinguishable oil drops in ovarian whole mounts which is an easily observed microscopic descriptor of PREF growth. The results clearly suggested that PREF growth was well synchronized between Atlantic horse mackerel that were capable of spawning and provided evidence for the existence of daily spawning synchronicity in the population. Apart from sampling time of day, the size of hydrated oocytes was shown to be affected by body size: a 10 cm difference in maternal length corresponded to a 0.030 mm difference in the diameter of hydrated oocytes. In contrast, the size of early germinal vesicle migration oocytes was correlated neither to sampling time nor to maternal size which suggests that the abrupt increase in PREF size only commences after the onset of the actively spawning sub-phase.

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Section: Discussionmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preovulatory follicle growth dynamics indicates daily spawning synchronicity in wild-caught Atlantic horse mackerel off Portugal

Mouchlianitis

Nunes

Costa

et al. 2018

Aquat. Living Resour.

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“…F POF was given as Nv i times ovary volume (OV). OV was estimated by dividing OW by the assumed ovarian specific gravity, set to 1.026 for both species (Ganias et al, 2015). RF POF was thereafter calculated (see previous paragraph).…”

Section: Pof Fecundity Using the Weibel Methodsmentioning

confidence: 99%

Contrasting post-ovulatory follicle production in fishes with different spawning dynamics

et al. 2020

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“…La variabilidad en la producción (cantidad) y calidad (tamaño) ovocitaria en individuos de la misma especie ha sido investigada, concluyendo que la condición maternal es determinante en el éxito reproductivo y esta a su vez puede verse afectada por factores ambientales y antrópicos (Saborido-Rey, 2004;Alonso-Fernández y Saborido-Rey, 2011;Cooper et al, 2013;Ganias et al, 2014Ganias et al, , 2015. Altos niveles de explotación pesquera pueden modificar la estructura de tallas de la población haciendo que el potencial reproductivo del stock disminuya desproporcionadamente (Berkeley et al, 2004;Wright y Trippel, 2009) y esos cambios impactan considerablemente las estimaciones del estado anual de la fecundidad (Cooper et al, 2013).…”

Section: Discusión Y Conclusionesunclassified

Fecundidad Del Jurel Aleta Amarilla, Caranx Hippos (Linnaeus) en El Caribe Colombiano

Alfaro-Martínez

Bustos-Montes

Salas-Castro

et al. 2016

BIM

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Caranx hippos is one of the most important fish resources in Colombia, particularly in artisanal fisheries. In order to deepen C. hippos biological knowledge, fecundity (number of eggs in development) and oocyte diameter was estimated. Fish samples were collected from commercial artisanal fishing trips, each fish was measured (total length, Lt) and weighted (total weight, Pt); gonads were removed, weighed and analyzed for determining fecundity using a gravimetric method combined with image analysis performed using the open access software Image J®. From the measurement of 149552 oocytes, an average diameter of 0.32 ± 1.24E-4 mm, was obtained, while fecundity varied between 291439 and 4380480 oocytes per gonad. No direct relationship was evidenced between egg number and diameter, and fish size and weight. Mature oocyte microstructural development is described, average diameters in cortical alveoli and vitellogenesis were 98.6 + 33.1 μm y 207.5+ 59.6 μm, respectively. This result suggests that larger females are not always the more fertile. Given the importance of C. hippos in Colombia, this work is a valuable contribution to the knowledge of the species, which can be used in fishery models with direct applicability to management procedures.

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Maternal versus environmental constraints on the oocyte size of a marine pelagophil fish

Abstract: oocyte size are due to a functional relationship between the abdominal volume and ovarian size.

Cited by 4 publications

References 35 publications

Preovulatory follicle growth dynamics indicates daily spawning synchronicity in wild-caught Atlantic horse mackerel off Portugal

Preovulatory follicle growth dynamics indicates daily spawning synchronicity in wild-caught Atlantic horse mackerel off Portugal

Contrasting post-ovulatory follicle production in fishes with different spawning dynamics

Fecundidad Del Jurel Aleta Amarilla, Caranx Hippos (Linnaeus) en El Caribe Colombiano

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