Do predator odours and warmer winters affect growth of salmonid embryos?

Filipsson, Karl (author): Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013)

Erlandsson, Ann, 1968- (author): Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013)

Greenberg, Larry, 1955- (author): Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013)

Österling, Martin, 1970- (author): Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013)

Watz, Johan, 1977- (author): Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013)

Bergman, Eva, 1959- (author): Karlstads universitet,Institutionen för miljö- och livsvetenskaper (from 2013)

(creator_code:org_t)

John Wiley & Sons, 2023
2023
English.
In: Ecology of Freshwater Fish. - : John Wiley & Sons. - 0906-6691 .- 1600-0633. ; :1

Related links:: https://doi.org/10.1...; show more...; https://kau.diva-por... (primary) (Raw object); https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

Conditions early in ontogeny can have considerable effects later on in life. Many salmonids spawn during the autumn, and temperature during subsequent embryogenesis may have far-reaching effects on life-history traits, especially when considering ongoing climate change. Even biotic conditions during embryogenesis, such as predation threat, may affect later life stages. Here, we examined how predator odours and increased temperatures affect embryonic growth and development of a fish (brown trout Salmo trutta). We found that embryos had lower body mass and greater yolk volume close to hatching when subjected to predator odours. Trout embryos incubated at temperatures representing natural winter conditions were larger than embryos incubated at higher temperatures, although the latter hatched earlier. Fry sizes at emergence did not differ between treatments, perhaps because of compensatory growth during spring. This study shows that predator presence can have similar effects on embryonic growth of salmonids as warming winters, with possible impact later in ontogeny.

NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Fisk- och akvakulturforskning (hsv//swe)
AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Fish and Aquacultural Science (hsv//eng)

By the author/editor: Filipsson, Karl; Erlandsson, Ann, ...; Greenberg, Larry ...; Österling, Marti ...; Watz, Johan, 197 ...; Bergman, Eva, 19 ...

About the subject

AGRICULTURAL SCIENCES: AGRICULTURAL SCI ...; and Agriculture Fore ...; and Fish and Aquacul ...

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