Timing of oocyte recruitment within the ovulatory cycle of Macedonian shad, Alosa macedonica, a batch spawning fish with indeterminate fecundity

Mouchlianitis, Foivos Alexandros; Minos, George; Ganias, Konstantinos

doi:10.1016/j.theriogenology.2020.01.050

Cited by 15 publications

(23 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…the beginning of the new spawning cycle. Other anadromous alosines shown to be multiple spawners include Alewife A. pseudoharengus (Ganias, Divino, et al., 2015), American Shad (McBride et al., 2016; Olney et al., 2001), Hickory Shad A. mediocris (Murauskas & Rulifson, 2011), Alabama Shad A. alabamae (Mettee & O'Neil, 2003) and Twaite Shad A. fallax fallax (Pina et al., 2003), as well as the landlocked Macedonian Shad A. macedonica (Mouchlianitis et al., 2020).…”

Section: Discussionmentioning

confidence: 99%

“…Oocyte recruitment continued to the end of the spawning period as indicated by the presence of early SG oocytes both in late active spawners and spent females. Indeterminate fecundity has been documented for several anadromous alosines, e.g., Hickory Shad (Murauskas & Rulifson, 2011), American Shad (Hyle et al., 2014), and Alewife (Ganias, Divino, et al., 2015) and the landlocked Macedonian Shad (Mouchlianitis et al., 2020). We interpret indeterminate fecundity as a strategy conferring flexibility of energy allocation in the face of migration costs; in contrast to determinate fecundity which designates the full complement of oocytes in advance, the indeterminate strategy commits energy to reproduction as spawning continues to be possible.…”

Section: Discussionmentioning

confidence: 99%

“…This state has been evinced both through extensive analyses of ovarian samples – e.g. Northern anchovy, Engraulis mordax (Hunter & Leong, 1981), European anchovy, E. encrasicolus (Schismenou et al., 2012), and Macedonian shad, Alosa macedonica (Mouchlianitis et al., 2020) – and through simulations of spawning dynamics (Ganias, Lowerre‐barbieri, et al., 2015). Normally, continuous SG recruitment results in a surplus of SG oocytes at the end of spawning period which subsequently fall into massive atresia (Ganias et al., 2014; Hunter & Macewicz, 1985a; Witthames et al., 1995), a process known as ‘mopping‐up’ (Kjesbu, 2009; Wallace et al., 1981).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ovarian dynamics and fecundity regulation in blueback herring, Alosa aestivalis , from the Connecticut River, US

et al. 2020

Self Cite

View full text Add to dashboard Cite

We analyzed ovarian dynamics of anadromous blueback herring, Alosa aestivalis, in Connecticut River with the principal aim of exploring oocyte recruitment and how it shapes the fecundity pattern. We examined the oocyte release strategy and analyzed spawning cyclicity by linking oocyte growth to the degeneration of postovulatory follicles. Females were accordingly classified as pre‐spawners, early and late active spawners, and oocyte recruitment intensity was compared among the different spawning phases. Oocyte recruitment occurred continuously and in parallel with spawning activity, a pattern which is diagnostic of indeterminate fecundity. However, both fecundity and oocyte recruitment intensity progressively decreased (tapered) throughout spawning, until the ovary was depleted of vitellogenic oocytes. There was no massive atresia of vitellogenic oocytes at the end of the spawning season, which is atypical of indeterminate spawners. We propose that tapering in oocyte recruitment and fecundity is an adaptation to the high energetic expenditure of the upstream spawning migration.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ovarian dynamics and fecundity regulation in blueback herring, Alosa aestivalis , from the Connecticut River, US

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…primarily VOs or FOM/HO (hydrated oocytes), when aiming at studying temporal and/or spatial fecundity dynamics 9 , 13 , 14 . However, over the recent years, several studies have pointed at the importance of focusing on the actual PVO production as well to better understand oocyte recruitment processes and thereby the underlying fecundity formation as such 10 , 13 , 21 , 24 , 25 , 28 , 29 . In the stock assessment of mackerel, one of the biggest problem up today has been to unveil the actual fecundity type and thereby run the most adequate EPM 20 , 30 to provide the SSB index possibly nearest to the real SSB 18 , 20 .…”

Section: Discussionmentioning

confidence: 99%

First thorough assessment of de novo oocyte recruitment in a teleost serial spawner, the Northeast Atlantic mackerel (Scomber scombrus) case

Schmidt

Thorsén

Slotte

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The understanding of teleost fecundity type (determinate or indeterminate) is essential when deciding which egg production method should be applied to ultimately estimate spawning stock biomass. The fecundity type is, however, unknown or controversial for several commercial stocks, including the Northeast Atlantic mackerel (Scomber scombrus). Aiming at solving this problem, we applied state-of-the-art laboratory methods to document the mackerel fecundity type, including any de novo oocyte recruitment during spawning. Initially, active mackerel spawning females were precisely classified according to their spawning status. The number and size of all phasei-specific oocytes (12 phases), with a special attention to previtellogenic oocytes phases (PVO [PVO2 to PVO4a–c]), were also thoroughly investigated. Examinations of relative fecundity (RFi) clarified that the latest phase of PVOs (PVO4c) are de novo recruited to the cortical alveoli–vitellogenic pool during the spawning period, resulting in a dome-shaped seasonal pattern in RFi. Hence, we unequivocally classify mackerel as a true indeterminate spawner. As PVO4c oocytes were currently identified around 230 µm, mackerel fecundity counts should rather use this diameter as the lower threshold instead of historically 185 µm. Any use of a too low threshold value in this context will inevitably lead to an overestimation of RFi and thereby underestimated spawning stock biomass.

show abstract

“…These observations indicate that the fish will be spawning immediately in about 24 hours. Mouchlianitis et al (2020) also explained that the presence of a hydrated oocyte can be direct evidence that fish will spawn. It means that these fish are group-synchronous spawners because the ovaries retain immature eggs (Figure 7a) and coincide with the concurrent presence of ovulated oocytes (Figure 7.A-C).…”

Section: Discussionmentioning

confidence: 99%

Lunar cycle and reproductive activity of Redbelly yellowtail fusilier, Caesio cuning in Karimunjawa National Park, Indonesia

2021

View full text Add to dashboard Cite

Abstract. Ayodya FP, Wijayanti DP, Sabdono A. 2021. Lunar cycle and reproductive activity of Redbelly yellowtail fusilier, Caesio cuning in Karimunjawa National Park, Indonesia. Biodiversitas 22: 3075-3082. Redbelly yellowtail fusilier (Caesio cuning) is known as fish that has been widely distributed among Southeast Asian countries. Fishers in Indonesia especially target the species, causing the scarcity and depletion of the catch in many fisheries areas each year. One of the priority aspects in improving fisheries management in conservation areas is information regarding reproductive activities. Many reports suggested that the lunar cycle affects the reproductive activity of fishes. However, none of the studies reported on the effect of lunar cycle on the reproductive activity of C. cuning. This study aimed to explain the lunar cycle effect on the reproductive activity of C. cuning through gonadosomatic index (GSI), viscerosomatix index (VSI), and the observation of oocyte conditions. There were 374 individual fishes collected from Nyamuk Island, Karimunjawa from September to November 2020. Samples were taken in each phase and between major phase of the moon (new, first quarter, full, last quarter) during two lunar cycles. The results point out mature gonad (stage IV and V) was present around the new moon. The peak of female GSI occurred around the last quarter moon with figures 6.12 and 5.51% respectively. The condition of the mature oocyte and ovulation were present around the last quarter and the new moon. The condition indicates imminent spawning.

show abstract

Timing of oocyte recruitment within the ovulatory cycle of Macedonian shad, Alosa macedonica, a batch spawning fish with indeterminate fecundity

Cited by 15 publications

References 26 publications

Ovarian dynamics and fecundity regulation in blueback herring, Alosa aestivalis , from the Connecticut River, US

Ovarian dynamics and fecundity regulation in blueback herring, Alosa aestivalis , from the Connecticut River, US

First thorough assessment of de novo oocyte recruitment in a teleost serial spawner, the Northeast Atlantic mackerel (Scomber scombrus) case

Lunar cycle and reproductive activity of Redbelly yellowtail fusilier, Caesio cuning in Karimunjawa National Park, Indonesia

Contact Info

Product

Resources

About