Reproductive Biology of Teleost Fishes

Wootton, R. J.; Smith, Carl

doi:10.1002/9781118891360

Cited by 151 publications

(224 citation statements)

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“…R. Soc. B 282: 20151046 their own territory, as well as those of their neighbours, examine the exhalant siphons of mussels and frequently ejaculate over them (termed pre-oviposition ejaculation) [14,15]. Nonterritorial males also engage in the same behaviour, which takes place even in the absence of females, though the presence of a female who is ready to mate significantly increases the rate of male inspection and ejaculation [17,37].…”

Section: Discussionmentioning

confidence: 99%

“…Because the amount of egg yolk can significantly affect offspring fitness [15,35], egg size was included as a covariate in the analysis as a maternal effect. Narrow-sense heritability (h 2 ) was estimated as V A /V P , where V A is additive genetic variance and V P total phenotypic variance [29].…”

Section: (H) Statistical Analysismentioning

confidence: 99%

“…Males that control access to mussels enjoy high reproductive success, and male dominance is determined by body size [19,20], with smaller, subordinate males adopting alternative mating tactics. The dominant 'guarder' and subordinate 'sneaker' mating tactics are not fixed, and male mating behaviour is opportunistic, with males capable of playing either role depending on environmental context [21,22], which is the typical situation in teleost fishes [15]. The sneaker tactic commonly involves pre-oviposition ejaculations [14,15,17], with male reproductive success determined by how males distribute their ejaculates among mussels in relation to the distribution of spawning females, the spatial distribution of mussels and the distribution of rival ejaculates [17], while minimizing the risk of sperm depletion [18].…”

Section: Introductionmentioning

confidence: 99%

“…Dominant males aggressively defend territories to monopolize mussels and perform elaborate courtship towards females [14,15]. Females place their eggs into the gills of a mussel through its exhalant siphon.…”

Section: Introductionmentioning

confidence: 99%

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Cognitive ability is heritable and predicts the success of an alternative mating tactic

2015

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The ability to attract mates, acquire resources for reproduction, and successfully outcompete rivals for fertilizations may make demands on cognitive traits-the mechanisms by which an animal acquires, processes, stores and acts upon information from its environment. Consequently, cognitive traits potentially undergo sexual selection in some mating systems. We investigated the role of cognitive traits on the reproductive performance of male rose bitterling (Rhodeus ocellatus), a freshwater fish with a complex mating system and alternative mating tactics. We quantified the learning accuracy of males and females in a spatial learning task and scored them for learning accuracy. Males were subsequently allowed to play the roles of a guarder and a sneaker in competitive mating trials, with reproductive success measured using paternity analysis. We detected a significant interaction between male mating role and learning accuracy on reproductive success, with the best-performing males in maze trials showing greater reproductive success in a sneaker role than as a guarder. Using a cross-classified breeding design, learning accuracy was demonstrated to be heritable, with significant additive maternal and paternal effects. Our results imply that male cognitive traits may undergo intra-sexual selection.

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Section: Discussionmentioning

confidence: 99%

Section: (H) Statistical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cognitive ability is heritable and predicts the success of an alternative mating tactic

2015

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“…Depending on the taxonomical status of the species, Teleostean fish exhibit some diversity in gonad forms (Parenti and Grier 2004;Henderson et al 2014;Wootton and Smith 2015). It is not known if the number of gonads is fully conserved at a genetic level in fish (DeFalco and Capel 2009), but the basic pattern is a pair of ovaries and testes in the majority of species.…”

Section: Possible Causes Of Gonad Malformationsmentioning

confidence: 99%

Morphological abnormalities in gonads of the Baltic herring (Clupea harengus membras): Description of types and prevalence in the northern Baltic Sea

Rajasilta

Elfving

Hänninen

et al. 2015

Ambio

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Due to heavy anthropogenic influence and variation of the environmental conditions in the Baltic Sea, reproductive disorders are becoming a major environmental concern. We show here an increasing prevalence of gonadal malformations in the Baltic herring (Clupea harengus membras), a key species of the Baltic ecosystem and important in commercial fishery. During 1987-2014, the spawning herring population in the Archipelago Sea (AS) (North Baltic Sea, Finland) was monitored annually and analyzed for gross morphology of the gonads [total number (n) of analyzed fish = 38 284]. Four different types of malformations were repeatedly found and named as asymmetric, rudimentary, segmented, and branched gonads, but also hermaphroditic gonads and miscellaneous (unidentified) disorders were recorded. In 2013, additional samplings (n of fish analyzed = 541) showed similar malformations in herring from the Bothnian Sea. In some gonad types, histological examination revealed disintegration of seminiferous tubules and hyperplasia of the interstitial tissue. In 2014, the overall prevalence of malformations was still relatively low in the AS (frequency = 0-3.4 %; n = 750) and had apparently minimal effect on population recruitment. However, an increasing trend in the time-series (GLM; F = 32.65; p\0.001) and a significantly higher prevalence in the Bothnian Sea (frequency = 0.7-5.0 %; n = 541; v 2 = 6.24; p\0.05) suggest that gonadal malformations may become a new threat for fish in the Baltic Sea. The observed gonad atrophies may be due to environmental endocrine disruption; however, also other explanations may exist and potential explanations are discussed.

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Population Consequences of Releasing Sex‐Reversed Fish

Wedekind

2018

Sex Control in Aquaculture

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Reproductive Biology of Teleost Fishes

Cited by 151 publications

References 0 publications

Cognitive ability is heritable and predicts the success of an alternative mating tactic

Cognitive ability is heritable and predicts the success of an alternative mating tactic

Morphological abnormalities in gonads of the Baltic herring (Clupea harengus membras): Description of types and prevalence in the northern Baltic Sea

Population Consequences of Releasing Sex‐Reversed Fish

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