Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity

331 pages

Detalles Bibliográficos
Autor: Anka, Ishrat Z.
Tipo de recurso: tesis doctoral
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/394737
Acceso en línea:http://hdl.handle.net/10261/394737
Access Level:acceso abierto
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spelling Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversityAnka, Ishrat Z.331 pagesFish performance is influenced by their genotype and environment. For populations with low genetic diversity, adaptation to environmental change can be compromised, but it has been suggested that the microbiome can act as an additional source of variability. Early rearing conditions can be particularly important for fish development and behaviour, due to their dependence on the environmental conditions. This thesis explored the interactions between fish genotype and rearing environment (diet and enrichment) on behaviour, metabolic rate and microbiome (gut, skin) using captive and wild populations of naturally inbred mangrove killifishes (Kryptolebias sp.), where the exploratory behaviour and closed respirometry were used to test the captive killifish and microbiome diversity analyses were performed in both captive and wild killifishes. Behavioural trials in self-fertilizing killifish (Kryptolebias marmoratus) indicated a significant effect of both genetic strain and rearing environment (environmental enrichment and diet) on fish activity measurements. Incubation time also had a substantial role on both fish behaviour and microbiome diversity. Gut-microbiome alpha diversity was shaped by strain, diet, and hatching time in K. marmoratus with interactions between diet and physical enrichment. An intergenerational influence of rearing environment on fish behaviour was detected in K. marmoratus, where parental activity was found to influence offspring activity. Gut-microbial comparisons between parents and offspring identified Vibrionaceae as the dominant colonizers in laboratory reared K. marmoratus. A dominant effect of the rearing environment over strain on both microbiome composition and distribution was observed. The influence of the interaction between parental and own environments on microbiome alpha diversity in K. marmoratus offspring suggests long-term effects of the rearing environment on the fish (gut) microbiome. In the wild, results from the outcrossing K. ocelatus and the self-fertilising K. hermaphroditus identified that the diversity and community composition of the skin microbiome were strongly shaped by their environment but also by the species and host genetic diversity at different levels. This study also found first-time evidence of a relationship between microbiome and epigenetic diversity in these wild populations, suggesting that both mechanisms could be potential sources of additional variability for fish species with low genetic diversity. The global findings of this thesis on mangrove killifishes from different origins (laboratory and natural conditions) highlighted the importance of the interactions between genotype and environment in shaping fish microbiome composition and diversityThis PhD was supported by a Commonwealth PhD Scholarship (BDCS-2020-41). Additional funding supports are mentioned in related chapters of this thesisPeer reviewedSwansea UniversityConsuegra, SofíaCommonwealth Scholarship CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/doctoralThesishttp://purl.org/coar/resource_type/c_db06http://hdl.handle.net/10261/394737reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://cronfa.swan.ac.uk/Record/cronfa67285Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3947372026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity
title Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity
spellingShingle Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity
Anka, Ishrat Z.
title_short Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity
title_full Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity
title_fullStr Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity
title_full_unstemmed Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity
title_sort Effect of early rearing conditions on the behaviour and microbiome of fish with low genetic diversity
dc.creator.none.fl_str_mv Anka, Ishrat Z.
author Anka, Ishrat Z.
author_facet Anka, Ishrat Z.
author_role author
dc.contributor.none.fl_str_mv Consuegra, Sofía
Commonwealth Scholarship Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description 331 pages
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
http://purl.org/coar/resource_type/c_db06
format doctoralThesis
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/394737
url http://hdl.handle.net/10261/394737
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://cronfa.swan.ac.uk/Record/cronfa67285
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Swansea University
publisher.none.fl_str_mv Swansea University
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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