Habitat associations of rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta fry. Issue 1 (20th October 2021)
- Record Type:
- Journal Article
- Title:
- Habitat associations of rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta fry. Issue 1 (20th October 2021)
- Main Title:
- Habitat associations of rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta fry
- Authors:
- Fetherman, Eric R.
Avila, Brian W. - Abstract:
- Abstract: Habitat restoration activities continue to increase in large rivers, but many of these projects focus on improving juvenile or adult habitats. Incorporating the habitat associations of fry into restoration designs will allow for broader successes from restoration for all life stages and may be useful for either multispecies or specific‐species management. This study investigated the habitat associations of rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta fry in the upper Colorado River, focusing on the mean substrate size ( D 50 ), velocity (m s −1 ), depth (m) and presence of wood in near‐shore habitats. S. trutta and O. mykiss were found in higher numbers in fry sites with a D 50 of 151 mm (ranging from 96 to 206 mm), velocities ranging from 0.20 to 0.23 m s −1 and depths ranging from 0.17 to 0.18 m. Although there was considerable overlap in habitat associations between the two species, there may be opportunities for single‐species management, if this is a goal of such restoration activities, by adjusting design criteria based on differing habitat associations. In addition, the results suggest that including larger particle sizes in near‐shore habitats and upstream of fry sites could decrease Tubifex tubifex habitat and thereby fry infection severity by reducing exposure to Myxobolus cerebralis . Stocking, interspecific competition and/or the presence of pathogens can affect fry habitat associations and cause deviations from demonstratedAbstract: Habitat restoration activities continue to increase in large rivers, but many of these projects focus on improving juvenile or adult habitats. Incorporating the habitat associations of fry into restoration designs will allow for broader successes from restoration for all life stages and may be useful for either multispecies or specific‐species management. This study investigated the habitat associations of rainbow trout Oncorhynchus mykiss and brown trout Salmo trutta fry in the upper Colorado River, focusing on the mean substrate size ( D 50 ), velocity (m s −1 ), depth (m) and presence of wood in near‐shore habitats. S. trutta and O. mykiss were found in higher numbers in fry sites with a D 50 of 151 mm (ranging from 96 to 206 mm), velocities ranging from 0.20 to 0.23 m s −1 and depths ranging from 0.17 to 0.18 m. Although there was considerable overlap in habitat associations between the two species, there may be opportunities for single‐species management, if this is a goal of such restoration activities, by adjusting design criteria based on differing habitat associations. In addition, the results suggest that including larger particle sizes in near‐shore habitats and upstream of fry sites could decrease Tubifex tubifex habitat and thereby fry infection severity by reducing exposure to Myxobolus cerebralis . Stocking, interspecific competition and/or the presence of pathogens can affect fry habitat associations and cause deviations from demonstrated suitability indices. As such, evaluating system‐specific differences in habitat associations may allow future habitat restoration activities to be more effective. … (more)
- Is Part Of:
- Journal of fish biology. Volume 100:Issue 1(2022)
- Journal:
- Journal of fish biology
- Issue:
- Volume 100:Issue 1(2022)
- Issue Display:
- Volume 100, Issue 1 (2022)
- Year:
- 2022
- Volume:
- 100
- Issue:
- 1
- Issue Sort Value:
- 2022-0100-0001-0000
- Page Start:
- 51
- Page End:
- 61
- Publication Date:
- 2021-10-20
- Subjects:
- brown trout -- Colorado River -- habitat associations -- Oncorhynchus mykiss -- rainbow trout -- Salmo trutta
Fishes -- Periodicals
Fishes -- Great Britain -- Periodicals
597 - Journal URLs:
- http://onlinelibrary.wiley.com/ ↗
- DOI:
- 10.1111/jfb.14918 ↗
- Languages:
- English
- ISSNs:
- 0022-1112
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 4984.280000
British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 20668.xml