To what extent is cannibalism genetically controlled in fish? A case study in juvenile hybrid catfish Silurus meridionalis–asotus and the progenitors

Yang, Shiyong; Yang, Kun; Liu, Cong; Sun, Jiaxian; Zhang, Fengtang; Zhang, Xiuyue; Song, Zhaobin

doi:10.1016/j.aquaculture.2014.12.005

Cited by 15 publications

(13 citation statements)

References 29 publications

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“…Some studies have demonstrated that this phenomenon is to some extent genetically determined (Thibault 1974;Ferguson and Noakes 1983;van Damme et al 1989;Amundsen et al 1999;Yang et al 2015). However, the interactions between genotype and environment play a major role in the expression of cannibalism (Baras and Jobling 2002;Yang et al 2015). Intracohort cannibalism may also be sex-based, especially in species that show sexual growth dimorphism during early ontogeny, e.g.…”

Section: Causes Occurrence and Developmentmentioning

confidence: 99%

“…old hake females (family Gadidae) (Garrison and Link 2000). Moreover, the influence of the genotype of a maternal parent on cannibalism in progeny is higher than the paternal one (Mousseau 1998;Yang et al 2015).…”

Section: Causes Occurrence and Developmentmentioning

confidence: 99%

“…However, the extent to which cannibalistic behaviour is genetically controlled in fish remains controversial, and it is still unclear if cannibals in many species are ''natural born killers'' or just ''lottery winners'' (Baras and Jobling 2002;Król et al 2013;Yang et al 2015). Some studies have demonstrated that this phenomenon is to some extent genetically determined (Thibault 1974;Ferguson and Noakes 1983;van Damme et al 1989;Amundsen et al 1999;Yang et al 2015). However, the interactions between genotype and environment play a major role in the expression of cannibalism (Baras and Jobling 2002;Yang et al 2015).…”

Section: Causes Occurrence and Developmentmentioning

confidence: 99%

“…It is hormonally regulated via different modulators (Table 2), and is the basis of cannibalistic behaviour (Hecht and Appelbaum 1988;Folkvord 1997;Yang et al 2015;Vallon et al 2016). …”

Section: Hormonal Backgroundmentioning

confidence: 99%

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Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Naumowicz

Pajdak

Terech-Majewska

et al. 2017

Rev Fish Biol Fisheries

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Cannibalism is a common phenomenon that occurs in over 30 fish families. Most of the species are valuable objects of aquaculture and cannibalism is highly undesirable. Cannibalism is an aggressive behaviour, which can be caused by stress induced by various population and environmental factors and can occur in two main forms: early larval and late juvenile (or adult). Each of these forms can lead to severe losses of stock. Losses are caused not only by fish eating each other, but also by an increase in the number of infections (the result of body surface damage). It is important to understand the phenomenon of cannibalism in order to properly prevent, diagnose and reduce it. The main aim of this study was to present and examine some of the well-examined methods of cannibalism mitigation. Most of the methods consist of creating rearing conditions similar to natural conditions and to reduce stress. Moreover, because of large interspecies differences, similar methods can result in different effects depending on the species. Additional studies are needed to better understand the biology of each cultured species with particular emphasis on the impact of domestication, as well as to improve fish rearing conditions.

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Section: Causes Occurrence and Developmentmentioning

confidence: 99%

Section: Causes Occurrence and Developmentmentioning

confidence: 99%

Section: Causes Occurrence and Developmentmentioning

confidence: 99%

“…It is hormonally regulated via different modulators (Table 2), and is the basis of cannibalistic behaviour (Hecht and Appelbaum 1988;Folkvord 1997;Yang et al 2015;Vallon et al 2016). …”

Section: Hormonal Backgroundmentioning

confidence: 99%

See 2 more Smart Citations

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Naumowicz

Pajdak

Terech-Majewska

et al. 2017

Rev Fish Biol Fisheries

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“…However, some studies suggest that heterogeneous groups are more aggressive, as the display of the agonistic interaction is directly modulated by the size variation between cospecifics. In flounder (Paralichthys olivaceus) and hybrid catfish (Silurus meridionalis-asotus) the intensity of aggressive interactions is determined by differences in fish size (Dou et al 2000;Yang et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Effect of body size heterogeneity on the aggressive behavior of larvae of matrinxã, Brycon amazonicus (Characiformes, Bryconidae)

2018

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Brycon amazonicus is a native Amazonian fish that is important for aquaculture in South America. Larval mortality is high in this species in intensive breeding systems due to aggressiveness among larvae. The present study investigated experimentally the effects of body size heterogeneity on the aggressive behavior and survival of B. amazonicus during the early stages of larval development. Two treatments (larvae groups with homogeneous and heterogeneous body size) were evaluated throughout early larval stages tested at six time points: 12, 24, 36, 48, 60 and 72 hours after hatching (HAH). Two experiments quantified, respectively, aggressive interactions and mortality rates among larvae at each time point. The frequency of aggressive interactions exhibited by the less aggressive larvae in each replicate was higher in the homogeneous size treatment. Aggressiveness was higher at 12 HAH, decreasing thereafter, and increasing again at 72 HAH. The mortality rate significantly increased with the larval stage, and was higher in the homogeneous than in the heterogeneous sized groups. Our results showed that aggressiveness in B. amazonicus larvae is affected by size variability and larval development stage. This knowledge about larval behavior is important to develop measures to improve larval health and survival in intensive production systems for this species.

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Transition to Piscivory Seen Through Brain Transcriptomics in a Juvenile Percid Fish: Complex Interplay of Differential Gene Transcription, Alternative Splicing, and ncRNA Activity

Symonová,

Jůza,

Tesfaye

et al. 2024

J Exp Zool Pt A

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Pikeperch (Sander Lucioperca) belongs to main predatory fish species in freshwater bodies throughout Europe playing the key role by reducing planktivorous fish abundance. Two size classes of the young‐of‐the‐year (YOY) pikeperch are known in Europe and North America. Our long‐term fish survey elucidates late‐summer size distribution of YOY pikeperch in the Lipno Reservoir (Czechia) and recognizes two distinct subcohorts: smaller pelagic planktivores heavily outnumber larger demersal piscivores. To explore molecular mechanisms accompanying the switch from planktivory to piscivory, we compared brain transcriptomes of both subcohorts and identified 148 differentially transcribed genes. The pathway enrichment analyses identified the piscivorous phase to be associated with genes involved in collagen and extracellular matrix generation with numerous Gene Ontology (GO), while the planktivorous phase was associated with genes for non‐muscle‐myosins (NMM) with less GO terms. Transcripts further upregulated in planktivores from the periphery of the NMM network were Pmchl, Pomcl, and Pyyb, all involved also in appetite control and producing (an)orexigenic neuropeptides. Noncoding RNAs were upregulated in transcriptomes of planktivores including three transcripts of snoRNA U85. Thirty genes mostly functionally unrelated to those differentially transcribed were alternatively spliced between the subcohorts. Our results indicate planktivores as potentially driven by voracity to initiate the switch to piscivory, while piscivores undergo a dynamic brain development. We propose a spatiotemporal spreading of juvenile development over a longer period and larger spatial scales through developmental plasticity as an adaptation to exploiting all types of resources and decreasing the intraspecific competition.

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To what extent is cannibalism genetically controlled in fish? A case study in juvenile hybrid catfish Silurus meridionalis–asotus and the progenitors

Cited by 15 publications

References 29 publications

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Intracohort cannibalism and methods for its mitigation in cultured freshwater fish

Effect of body size heterogeneity on the aggressive behavior of larvae of matrinxã, Brycon amazonicus (Characiformes, Bryconidae)

Transition to Piscivory Seen Through Brain Transcriptomics in a Juvenile Percid Fish: Complex Interplay of Differential Gene Transcription, Alternative Splicing, and ncRNA Activity

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