title: Is recruitment of brown trout in a New Zealand river driven by parental spawning investment, density dependence, or environmental factors?
metadata.name: dc.contributor.author
metadata.value: Mikheev, Pavel
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Matthaei, Christoph
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Ingram, Travis
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Jarvis, Matt
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Closs, Gerard
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2022-10-25T17:44:21Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2022-10-25T17:44:21Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2022-09
metadata.lang: -
metadata.name: dc.identifier.citation
metadata.value: Mikheev, P., Matthaei, C., Ingram, T., Jarvis, M., and Closs, G. 2022. Is recruitment of brown trout in a New Zealand river driven by parental spawning investment, density dependence, or environmental factors? Bio. Comm. 67(3): 203–216. https://doi.org/10.21638/spbu03.2022.306
metadata.lang: en_GB
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/spbu03.2022.306
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/38351
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: This study addresses the primary factors driving young-of-the-year (YoY) brown
  trout Salmo trutta abundance and population dynamics through the Austral
  summer in an important spawning tributary of a large New Zealand river. We
  measured the key traits and spawning investment of spawners; YoY density and
  movement; and environmental characteristics important for juvenile trout. In
  comparison to their native European range, we found high rates of pre-spawning
  mortality, low density of deposited eggs and reduced spawning efficiency of
  adult brown trout. Parental spawning investment did not affect spring juvenile
  trout distribution, a result likely related to a mismatch between YoY abundance
  and densities of eggs deposited by adults at the sampled locations. Spatial differences
  in seasonal dynamics of YoY density were likely related to the diversity
  of environmental conditions affecting habitat suitability for post-larval brown
  trout along the stream. Significant correlations between juvenile trout loss rate
  and both YoY density and downstream migration were observed only for the
  lowland stream segments, which had the highest spawning investment from diadromous
  adults, indicating the importance of these locations for recruitment.
  This study highlights knowledge gaps in species-environment interactions and
  the reproductive ecology of brown trout in New Zealand.
metadata.lang: en_GB
metadata.name: dc.description.sponsorship
metadata.value: This study was funded by a
  University of Otago Doctoral Scholarship
  awarded to Pavel Mikheev.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: en
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.relation.ispartofseries
metadata.value: Biological Сommunications;Volume 67; Issue 3
metadata.lang: -
metadata.name: dc.subject
metadata.value: Salmo trutta
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: life histories reproduction
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: recruitment
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: density-dependence
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: spawning mortality
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Is recruitment of brown trout in a New Zealand river driven by parental spawning investment, density dependence, or environmental factors?
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Article
metadata.lang: en_GB
resources.filename: 06.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/38351/1/06.pdf
resources.format: Adobe PDF
resources.size: 1 MB