Reproductive strategies of the marine fishes from the southwest Atlantic Ocean: an application of histological and image processing techniques

Costa, Eudriano F. S.

doi:10.11606/t.21.2015.tde-18062015-095137

Cited by 2 publications

(3 citation statements)

References 122 publications

(265 reference statements)

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“…Using vocal fishes as models, we suggest that long term conservation and management plans can take advantage of PAM associated with water temperature recordings to make predictions about how shifts in temperature due to climate change may affect fish reproduction, namely the distribution of breeding fish and the timing and incidence of spawning. -Barbieri et al 2011a andCosta, 2015). B) In the north hemisphere, males and females are capable of spawning mostly during spring (adapted from Mar Gil et al 2013).…”

Section: Discussionmentioning

confidence: 99%

“…A) Sciaenids produce pelagic eggs that are released in batches over a spawning season with only a portion of the oocytes being released in each spawning event.The final oocyte maturation usually occurs in less than 24h. Several environmental and social parameters might be responsible for triggering spawning and the quantity of eggs released (adapted fromLowerre-Barbieri et al 2011a andCosta, 2015). B) In the north hemisphere, males and females are capable of spawning mostly during spring (adapted fromMar Gil et al 2013).…”

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confidence: 99%

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Temperature mediates chorusing behaviour associated with spawning in the sciaenid Argyrosomus regius

Vieira¹,

Amorim²,

Marques³

et al. 2022

Mar. Ecol. Prog. Ser.

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Climate change is leading to an increase in the frequency and intensity of daily temperature extremes in aquatic environments, posing a threat to ectothermic animals such as fishes. Temperature shifts can impact their reproductive cycle and behaviour, including acoustic signalling associated with courtship and mating in vocal fishes. Here, we examined the effect of temperature and other environmental factors on spawning-related chorusing behaviour in the meagre Argyrosomus regius. Using an automatic recognition system based on hidden Markov models coupled with one-third octave band sound level analysis, we extracted meagre daily vocal activity over 4 yr of passive acoustic monitoring (PAM) in the Tagus estuary (Portugal). Meagre vocal activity showed a distinct diel pattern, with choruses being most prevalent at dusk. Chorus activity started earlier in years with warmer springs, while the end of the season was concurrent with the rise in water temperature. Circa 70% of daily variations were explained by changes in water temperature. Tidal cycle, lunar phase and changes in daylength did not appear to affect vocal behaviour. Choruses were detected on days with mean water temperature ranging from 15-25°C, with stronger chorusing observed around 18°C. Abrupt temperature changes caused disruption in choruses and likely in associated spawning. This study highlights the importance of temperature to fish reproduction and demonstrates that PAM can be a useful tool for long-term conservation management plans. PAM may also allow us to predict how temperature shifts due to climate change may affect fish reproduction, using vocal fishes as model species.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Temperature mediates chorusing behaviour associated with spawning in the sciaenid Argyrosomus regius

Vieira¹,

Amorim²,

Marques³

et al. 2022

Mar. Ecol. Prog. Ser.

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“…The following cells are displayed: oogonia (Oog); oocytes in primordial growth (Pg) and early and late primary growth (Pg1, Pg2, respectively); cortical alveoli (CA); primary, secondary, and tertiary vitellogenesis (Vtg1, Vtg2, and Vtg3, respectively). This schematic presentation of oogenesis is based on[36,37].…”

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confidence: 99%

Characterization of the Polysialylation Status in Ovaries of the Salmonid Fish Coregonus maraena and the Percid Fish Sander lucioperca

Venuto

Ribera

Bochert³

et al. 2020

Cells

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In vertebrates, the carbohydrate polymer polysialic acid (polySia) is especially well known for its essential role during neuronal development, regulating the migration and proliferation of neural precursor cells, for instance. Nevertheless, sialic acid polymers seem to be regulatory elements in other physiological systems, such as the reproductive tract. Interestingly, trout fish eggs have polySia, but we know little of its cellular distribution and role during oogenesis. Therefore, we localized α2,8-linked N-acetylneuraminic acid polymers in the ovaries of Coregonus maraena by immunohistochemistry and found that prevalent clusters of oogonia showed polySia signals on their surfaces. Remarkably, the genome of this salmonid fish contains two st8sia2 genes and one st8sia4 gene, that is, three polysialyltransferases. The expression analysis revealed that for st8sia2-r2, 60 times more mRNA was present than st8sia2-r1 and st8sia4. To compare polysialylation status regarding various polySiaT configurations, we performed a comparable analysis in Sander lucioperca. The genome of this perciform fish contains only one st8sia2 and no st8sia4 gene. Here, too, clusters of oogonia showed polysialylated cell surfaces, and we detected high mRNA values for st8sia2. These results suggest that in teleosts, polySia is involved in the cellular processes of oogonia during oogenesis.

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Reproductive strategies of the marine fishes from the southwest Atlantic Ocean: an application of histological and image processing techniques

Cited by 2 publications

References 122 publications

Temperature mediates chorusing behaviour associated with spawning in the sciaenid Argyrosomus regius

Temperature mediates chorusing behaviour associated with spawning in the sciaenid Argyrosomus regius

Characterization of the Polysialylation Status in Ovaries of the Salmonid Fish Coregonus maraena and the Percid Fish Sander lucioperca

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