Autumn microhabitat breadth differs between family groups of Atlantic salmon parr (<i>Salmo salar</i>) in a small chalk stream

Fernandes, Wendy P. A.; Copp, Gordon H.; Riley, W. D.

doi:10.1111/eff.12189

Cited by 3 publications

(4 citation statements)

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“…However if resource availability is low, the cost of helping a relative rises and individuals may be less willing to pay the cost of helping, as this may result in decreased personal access to a limited resource (Fernandes, Griffiths et al., ). Therefore, to maximise smolt output from salmon stocking programmes, fisheries managers could consider releasing high densities of closely related individuals in highly productive stream sections where the benefits of kin‐selection are predicted to be greatest, and lower densities of unrelated individuals in less productive, or highly diverse, stream sections where microhabitat breadth influenced by the family of origin may reduce intraspecific competition (Fernandes et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…Juvenile Salmo salar were reared from wild parents, from which a tissue sample (adipose fin clip) was taken for genetic analysis, to create distinct full‐sibling family groups in two consecutive years (2006 & 2007). Three family groups were chosen for use in each year based on their similarities for length (24.8 – 27.2 mm FL), weight (0.126 – 0.177 g) and emergence time, as part of a programme investigating the effect of kinship and family traits on growth rate (Fernandes, Griffiths et al., ), migration strategies (Fernandes et al., ) and microhabitat use (Fernandes et al., ).…”

Section: Methodsmentioning

confidence: 99%

“…non-kin groups) than genetically similar groups (e.g. kin groups) owing to feeding specialisms and thus differing habitat preferences by genetically distinct components of the population (Griffiths & Armstrong, 2001;Fernandes, Copp & Riley, 2016). However, there is also evidence to suggest that relatives reduce aggressive behaviour towards one another and thus maximise kin selection benefits by association (Griffiths & Armstrong, 2002).…”

Section: Introductionmentioning

confidence: 99%

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Relatedness and body size influence territorial behaviour in Salmo salar juveniles in the wild

Fernandes

Griffiths

Ibbotson

et al. 2017

Fisheries Management Eco

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Wild Atlantic salmon, Salmo salar L., juveniles defend territories to enable exclusive access to food resources, and kin selection benefits may be accrued where territorial boundaries of relatives overlap. This study explored space sharing events between pairs of sibling and non‐sibling fish as a measure of territoriality and resource competition in a small chalk stream using passive integrated transponder (PIT) technology. The time period between fish detections in a shared space was closer between pairs of siblings (sibling pairs mean = 60.48 ± 51.84 min; non‐sibling pairs mean = 348.8 ±65.94 min). These results suggest that the territorial boundaries of related fish often overlap, thus increasing the likelihood of siblings accruing kin selection benefits. The findings from this study also suggest that outcomes of competitive interactions among dominant and subordinate fish are less pronounced when fish are related.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Relatedness and body size influence territorial behaviour in Salmo salar juveniles in the wild

Fernandes

Griffiths

Ibbotson

et al. 2017

Fisheries Management Eco

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“…Indeed, in field studies, growth rate in Atlantic salmon Salmo salar (Griffiths & Armstrong, 2001) and brown trout Salmo trutta (Greenberg et al, 2002) have been higher among fish in mixed-sibling groups. One potential explanation for this may be that unrelated individuals are able to exploit a wider range of ecological niches than closely related individuals that share many genes in common and exhibit similar ecological needs (Blaustein et al, 1991;Fernandes, Copp & Riley, 2014). Furthermore, kin selection advantages may be maximized, not by kin association, but rather by kin avoidance under different resource conditions.…”

Section: Introductionmentioning

confidence: 99%

The role of density and relatedness in wild juvenile Atlantic salmon growth

et al. 2014

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The NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. The role of density and relatedness in salmon growthThe role of density and relatedness in wild juvenile Atlantic salmon growth Growth is a key life history trait in fishes that is influenced by both abiotic factors (such 18 temperature and water chemistry) and biotic factors (such as density and food availability). 19Investigating how growth performance is influenced by such factors in the wild is important 20 for understanding how population processes influence animals in natural environments and 21 for predicting the response to conservation and management strategies that manipulate these 22conditions. The theory of kin selection predicts that significant growth and survival benefits 23 are conferred upon animals associating with close relatives. However, resource competition 24 may be more intense among close relatives, and little is known about the trade-off between 25 these two processes under different ecological conditions. Here we examine the correlation 26The role of density and relatedness in salmon growth between naturally occurring densities and kin-biased growth rate using a species where kin-27 recognition has a strong impact on behaviour in laboratory studies, but where, paradoxically, 28 field investigations have failed to document predicted kin-biased growth or survival. Intra-29 and inter-family differences in growth rate of juvenile Atlantic salmon (Salmo salar) were 30 studied to examine how relatedness (groups of full-sibling fish and groups of mixed-sibling 31 fish) and sibling group (family/genotype) affects salmon parr growth, and the correlation of 32 growth rate under a range of naturally-occurring densities. Parentage and relatedness of 33 neighbouring fish were assigned using microsatellite and passive integrated transponder (PIT) 34 tags which allowed the growth estimation of individual fish. Results show that growth rate 35 was significantly influenced by both sibling group (family of origin) and also by an 36 interaction between relatedness and density. The latter finding indicates that at higher 37 densities full-sibling groups achieved higher growth rates in comparison to mixed-sibling 38 groups. Thus, the growth benefits of associating with relatives are not conferred under all 39 ecological conditions, but it becomes most apparent at high density when resource 40 competition is greatest. 41 42

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The Scientific Achievements of Gordon H. Copp (1956–2023): An Unabridged Version From His Doctor of Science Portfolio

Vilizzi,

Tricarico

2024

Fisheries Management Eco

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This paper outlines the scientific achievements of Gordon H. Copp (1956–2023) in fish biology and invasion science as presented in his Doctor of Science portfolio. Gordon's mentorship began during his postdoctoral research and expanded to involve students, early‐career researchers as well as prominent fish biologists in a vast number of research projects. Early in his career, Gordon was involved in the study of floodplain fish communities for which he developed a novel technique for sampling young‐of‐year (0+) fish and in the early ontogeny of fishes. Gordon's later involvement in non‐native species policy has been pivotal, from developing risk analysis schemes for freshwater fishes to advising on EU and UK regulations. Gordon's research throughout his entire career on the pumpkinseed sunfish Lepomis gibbosus as a model species highlights his focus on understanding and predicting invasiveness under varying climate conditions, contributing to a broader understanding of non‐native species impacts.

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Autumn microhabitat breadth differs between family groups of Atlantic salmon parr (Salmo salar) in a small chalk stream

Cited by 3 publications

References 41 publications

Relatedness and body size influence territorial behaviour in Salmo salar juveniles in the wild

Relatedness and body size influence territorial behaviour in Salmo salar juveniles in the wild

The role of density and relatedness in wild juvenile Atlantic salmon growth

The Scientific Achievements of Gordon H. Copp (1956–2023): An Unabridged Version From His Doctor of Science Portfolio

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