Fecundity and Egg Size of Three Salmonid Species (Oncorhynchus mykiss, Salmo labrax, Salvelinus fontinalis) Cultured at the Same Farm Condition in North-Eastern, Turkey

Şerezli, Ramazan; Güzel, Şenol; Kocabaş, Mehmet

doi:10.3923/javaa.2010.576.580

Cited by 12 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Production of high quality rainbow trout eggs also has commercial values for egg suppliers. For these reasons, rainbow trout egg quality and production have been extensively studied [25] , [28] , [29] , [30] , [31] . Nevertheless, the egg quality can be highly variable [24] , [32] , partly because it involves multiple developmental phases of oocyte maturation, vitellogenesis, and competent egg ovulation, in which regulation of maternal RNA transcripts and proteins by miRNAs has been implicated [17] , [33] , [34] .…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Rainbow Trout Egg MicroRNA Transcriptome

Hostuttler

Wei

et al. 2012

PLoS ONE

View full text Add to dashboard Cite

MicroRNAs (miRNAs) are a class of endogenous small non-coding RNA molecules that regulate post-transcriptional expression of target genes and play important roles in animal development. The objectives of this study were to characterize the egg miRNA transcriptome and identify novel egg-predominant miRNAs in rainbow trout. Small RNAs isolated from mature unfertilized rainbow trout eggs were subjected to deep sequencing using an Illumina Genome Analyzer. The massive sequencing produced 24,621,741 quality reads, among which, 266 known miRNAs were identified and 230 putatively novel miRNAs were predicted. The most abundantly known miRNAs are let-7 and miR-21, accounting for 24.06% and 18.71% of the known miRNAs, respectively. Other known miRNAs which are abundantly present in eggs include miR-24, miR-202, miR-148, miR-30, miR-10, miR-146, miR-25, and miR-143. Real time PCR analysis using cDNAs derived from 10 tissues validated 87 out of 90 selected putative miRNAs and identified three novel miRNAs predominantly expressed in rainbow trout eggs. Each of these novel egg-predominant miRNAs is predicted to target a significant number of genes, most of which are significantly down-regulated in naturally ovulated rainbow trout eggs based on analysis of publicly available microarray data sets. Quantitative real time PCR analysis also demonstrated low expression of a selected number of target genes in eggs relative to liver and muscle tissues. This study represents the first complete survey of miRNAs in fish eggs and provides a starting point for future studies aimed at understanding the roles of miRNAs in controlling egg quality and early embryogenesis in rainbow trout.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterization of the Rainbow Trout Egg MicroRNA Transcriptome

Hostuttler

Wei

et al. 2012

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…The positive correlation between batch fecundity and standard length among females of C. orientale has been observed for other fish species (Mazzoni & Iglesias-Rios, 2002;Ortega-Salas, Cortés, & Reyes-Bustamante, 2009;Rodrigues & Macchi, 2010;Serezli et al, 2010;Araújo et al, 2012;Peressin et al, 2012;Reid & Chaput, 2012). The correlation may be explained by the fact that larger individuals have more energy available for the production of oocytes (Patimar & Mohammadzadeh, 2011) and larger females have more space in the abdominal cavity, providing greater fecundity.…”

Section: Discussionmentioning

confidence: 80%

Tácticas reproductivas para optimizan la supervivencia de la descendencia de Cichlasoma orientale (Perciformes: Cichlidae)

Linhares

Manna

Mazzoni

et al. 2014

RBT

View full text Add to dashboard Cite

High mortality rates have been observed in Teleost during early developmental stages, as well as great variations in reproductive tactics, which are related to adaptations towards environmental conditions and ecological niches for which different species have a specific response. The objective of this study was to describe reproductive tactics related to the survival of Cichlasoma orientale offspring, including aspects of body size, parental care, fecundity, oocyte size and spawning patterns. Samples were performed monthly from August 2011 to July 2013, in lentic and lotic environments at Curu river basin, Brazilian Northeastern semiarid region. Individual behavior (n=113) was observed underwater for over 50 hours by ad libitum sampling and focal-animal sampling. Collected individuals (males n=185, females n=95) were evaluated regarding the standard length, batch fecundity, oocyte size and spawning pattern. In females with mature ovaries, oocyte groups at different developmental stages were observed, these cells were counted and measured, and fecundity was estimated by the gravimetric method. Our results showed that the species displayed biparental care behavior and, on average, males were larger than females. Based on 46 ovaries, the average batch fecundity was 2 052±849 (range: 254-3 389). Standard length and batch fecundity were positively correlated, but no correlation was found between oocyte size and standard length. The maximum diameter observed in the most developed oocytes was 1.8mm. The observed distribution of oocyte size classes indicated synchronous oocyte development in three groups: previtellogenic, vitellogenic and mature, showing that C. orientale is a multiple spawner. Differences in the amount of oocytes among the three groups were observed, with the most developed group showing the smallest number of oocytes. The combination of low fecundity and large egg size is characteristic of demersal spawners due to a greater environmental stability. Multiple spawning increases chances of survival mainly because of increased fecundity per reproductive season, and the reduced competition among the offspring. We concluded that C. orientale makes a heavy investment in larval survival in detriment of the offspring number. Survival is favored by the large size of oocytes, large yolk reserve, biparental care and multiple spawning pattern. Rev Teleosts make large investments in reproduction (Duarte, & Alcaraz, 1989) due to high mortality rates in early stages of life (McGurk, 1986). Offspring survival is safeguarded thanks to a range of reproductive tactics involving fecundity, egg size, spawning patterns and parental care, depending on environmental conditions and ecological niche (Winemiller, 1989;Murua, & Saborido-Rey, 2003).Fecundity plays an important role in recruitment (Rickman, Dulvy, Jennings & Reynolds, 2000) and is regulated by environmental conditions, food availability, predation and genetic factors (Kjesbu, Hunter, Witthames, 2003;Ganias, 2013). Teleosts fecundity may be determinate o...

show abstract

“…This is similar to younger Salmo salar and lower than older specimens from Irish rivers (De Eyto et al, ). It is also higher than relative fecundity of Oncorhynchus mykiss (2.180 ± 676 eggs) and Salvelinus fontinalis (2.571 ± 1,530 eggs) and similar to Salmo labrax (3.558 ± 1,307 eggs) from the Black Sea catchment of Turkey (Serezli, Guzel, & Kocabas, ).…”

Section: Discussionmentioning

confidence: 90%

Recent status and life history traits of endangered soft-mouth trout, Salmo obtusirostris in the River Neretva catchment (Bosnia and Herzegovina) as a consequence of river alteration

et al. 2018

View full text Add to dashboard Cite

Soft‐mouth trout, Salmo obtusirostris has disappeared from most of its historical distribution range in the River Neretva catchment. Remnant groups are highly fragmented and distribution of the species is restricted to only 15% of it's historical area. The most abundant length range of remnant individuals is between 20 and 40 cm; with a significant decrease of the bigger individuals. Age population structure is dominated by younger fish aged 2, 3 and 4 years, however, age class 4+ and 6+ predominated in the lower river part. Specimens older than 8 years were not observed, and estimated fishing mortality (F) was high, particularly in the upper part of the river (0.786). The River Neretva soft‐mouth trout population is under heavy pressure including anthropogenic habitat changes and illegal fishery, leading to disappearance in number of formerly inhabited areas. The Upper and Lower Neretva are the only areas where the species is still abundant. However, the collapse of the number of old individuals increases the risk of extinction of the remaining wild subpopulations.

show abstract

Fecundity and Egg Size of Three Salmonid Species (Oncorhynchus mykiss, Salmo labrax, Salvelinus fontinalis) Cultured at the Same Farm Condition in North-Eastern, Turkey

Cited by 12 publications

References 14 publications

Characterization of the Rainbow Trout Egg MicroRNA Transcriptome

Characterization of the Rainbow Trout Egg MicroRNA Transcriptome

Tácticas reproductivas para optimizan la supervivencia de la descendencia de Cichlasoma orientale (Perciformes: Cichlidae)

Recent status and life history traits of endangered soft-mouth trout, Salmo obtusirostris in the River Neretva catchment (Bosnia and Herzegovina) as a consequence of river alteration

Contact Info

Product

Resources

About