Ecology of reproduction

Rijnsdorp, A.D.; Witthames, Peter R.

doi:10.1002/9781118501153.ch5

Cited by 12 publications

(3 citation statements)

References 118 publications

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“…Thus, there is a trade-off between investment in gonad production and somatic growth influencing the current versus future reproductive potential (e.g. Kjesbu and Energy allocation for both somatic and gonad growth follows a seasonal cycle, normally peaking in the summer-autumn (Rijnsdorp, 1990;Rijnsdorp and Witthames, 2005). Hence, timing of reproduction, normally occurring in the spring, and feeding season are to a large extent decoupled but vary amongst species and between populations within a species in accordance with local conditions.…”

Section: Introductionmentioning

confidence: 94%

Fecundity regulation in relation to habitat utilisation of two sympatric flounder (Platichtys flesus) populations in the brackish water Baltic Sea

Nissling

Thorsén

Silva

2015

Journal of Sea Research

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Section: Introductionmentioning

confidence: 94%

Fecundity regulation in relation to habitat utilisation of two sympatric flounder (Platichtys flesus) populations in the brackish water Baltic Sea

Nissling

Thorsén

Silva

2015

Journal of Sea Research

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“…Early reviews of fish breeding patterns focused on boreal, commercially important specieslargely capital breedersunlikely to be representative of all fishes (Woodhead 1960;Iles 1974;Lambert et al 2003). Capital and income breeding has been recognized within some taxa including Clupeiformes (Peebles et al 1996), Pleuronectiformes (Rijnsdorp and Witthames 2005;Kjesbu and Witthames 2007) and viviparous fishes (Reznick and Braun 1987;Stearns 1989). Schultz et al (1991) noted for the viviparous dwarf perch (Micrometrus minimus, Embiotocidae) that 'females with large reserves are the capital breeders in the population, while females with smaller reserves draw more heavily on exogenous resources, closer to the income breeding strategy'.…”

Section: Introductionmentioning

confidence: 99%

Energy acquisition and allocation to egg production in relation to fish reproductive strategies

et al. 2013

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Oogenesis in fishes follows a universal plan; yet, due to differences in the synchrony and rate of egg development, spawning frequency varies from daily to once in a lifetime. Some species spawn and feed in separate areas, during different seasons, by storing energy and drawing on it later for reproduction (i.e. capital breeding). Other species spawn using energy acquired locally, throughout a prolonged spawning season, allocating energy directly to reproduction (i.e. income breeding). Capital breeders tend to ovulate all at once and are more likely to be distributed at boreal latitudes. Income breeding allows small fish to overcome allometric constraints on egg production. Income breeders can recover more quickly when good‐feeding conditions are re‐established, which is a benefit to adults regarding bet‐hedging spawning strategies. Many species exhibit mixed capital‐ and income‐breeding patterns. An individual's position along this capital–income continuum may shift with ontogeny or in relation to environmental conditions, so breeding patterns are a conditional reproductive strategy. Poor‐feeding environments can lead to delayed maturation, skipped spawning, fewer spawning events per season or fewer eggs produced per event. In a few cases, variations in feeding environments appear to affect recruitment variability. These flexible processes of energy acquisition and allocation allow females to prioritize their own condition over their propagules' condition at any given spawning opportunity, thereby investing energy cautiously to maximize lifetime reproductive value. These findings have implications for temporal and spatial sampling designs, for measurement and interpretation of fecundity, and for interpreting fishery and ecosystem assessments.

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“…For a number of flatfishes, including turbot Scophthalmus maximus (L. 1758), spawning takes place during a short period of time in comparison with energy acquisition and gonad growth, which follows a seasonal cycle (Rijnsdorp & Witthames, 2005). Hence, the timing of reproduction and feeding season may to a large extent be decoupled.…”

Section: Introductionmentioning

confidence: 99%

Fecundity regulation by atresia in turbot Scophthalmus maximus in the Baltic Sea

Nissling

Thorsén

Silva

2016

Journal of Fish Biology

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Down-regulation of fecundity through oocyte resorption was assessed in Baltic Sea turbot Scophthalmus maximus at three locations in the period from late vitellogenesis in April to spawning during June to July. The mean ± s.d. total length of the sampled fish was 32.7 ± 3.1 cm and mean ± s.d. age was 6.2 ± 1.5 years. Measurements of atresia were performed using the 'profile method' with the intensity of atresia adjusted according to the 'dissector method' (10.6% adjustment; coefficient of determination was 0.675 between methods). Both prevalence (portion of fish with atresia) and intensity (calculated as the average proportion of atretic cells in fish displaying atresia) of atresia were low in prespawning fish, but high from onset of spawning throughout the spawning period. Atretic oocytes categorized as in early alpha and in late alpha state occurred irrespective of maturity stage from late prespawning individuals up to late spawning fish, showing that oocytes may become atretic throughout the spawning period. Observed prevalence of atresia throughout the spawning period was almost 40% with an intensity of c. 20%. This indicates extensive down-regulation, i.e. considerably lower realized (number of eggs spawned) v. potential fecundity (number of developing oocytes), suggesting significant variability in reproductive potential. The extent of fecundity regulation in relation to fish condition (Fulton's condition factor) is discussed, suggesting an association between levels of atresia and fish condition.

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Ecology of reproduction

Cited by 12 publications

References 118 publications

Fecundity regulation in relation to habitat utilisation of two sympatric flounder (Platichtys flesus) populations in the brackish water Baltic Sea

Fecundity regulation in relation to habitat utilisation of two sympatric flounder (Platichtys flesus) populations in the brackish water Baltic Sea

Energy acquisition and allocation to egg production in relation to fish reproductive strategies

Fecundity regulation by atresia in turbot Scophthalmus maximus in the Baltic Sea

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