Visual feeding of fish in a turbid environment: Physical and behavioural aspects

Utne‐Palm, Anne Christine

doi:10.1080/10236240290025644

Cited by 331 publications

(288 citation statements)

References 87 publications

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“…Different types of turbidity may affect behaviour in different ways. In aquatic environments, suspended sediment reduces the transmission of light through water (light attenuation), increases scattering [46] and reduces visual range [47]. Algal turbidity (as used here) can additionally act to shift the spectral composition of light towards green wavelengths [48,49], while dissolved organic matter shifts wavelengths into the longer orange/red Table 3.…”

Section: Discussionmentioning

confidence: 99%

‘Selfish herds’ of guppies follow complex movement rules, but not when information is limited

Kimbell¹,

Morrell²

2015

Proc. R. Soc. B.

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Under the threat of predation, animals can decrease their level of risk by moving towards other individuals to form compact groups. A significant body of theoretical work has proposed multiple movement rules, varying in complexity, which might underlie this process of aggregation. However, if and how animals use these rules to form compact groups is still not well understood, and how environmental factors affect the use of these rules even less so. Here, we evaluate the success of different movement rules, by comparing their predictions with the movement seen when shoals of guppies (Poecilia reticulata) form under the threat of predation. We repeated the experiment in a turbid environment to assess how the use of the movement rules changed when visual information is reduced. During a simulated predator attack, guppies in clear water used complex rules that took multiple neighbours into account, forming compact groups. In turbid water, the difference between all rule predictions and fish movement paths increased, particularly for complex rules, and the resulting shoals were more fragmented than in clear water. We conclude that guppies are able to use complex rules to form dense aggregations, but that environmental factors can limit their ability to do so.

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Section: Discussionmentioning

confidence: 99%

‘Selfish herds’ of guppies follow complex movement rules, but not when information is limited

Kimbell¹,

Morrell²

2015

Proc. R. Soc. B.

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show abstract

“…Since cuttlefish have large and sensitive eyes (Groeger et al, 2005), and can camouflage themselves in extremely low-light conditions (Allen et al, 2010b;Buresch et al, 2015), it is unlikely that their vision is affected much by turbid water. However, the vision of many potential fish predators may be affected by water turbidity (Utne-Palm, 2002). Cuttlefish thus may choose to resemble only nearby objects and substrates, because it is likely they are detected only when a predator is near.…”

Section: Discussionmentioning

confidence: 99%

Tactical Decisions for Changeable Cuttlefish Camouflage: Visual Cues for Choosing Masquerade Are Relevant from a Greater Distance than Visual Cues Used for Background Matching

Buresch

Ulmer

Cramer

et al. 2015

The Biological Bulletin

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“…abundance, fish in cut lakes had a higher feeding success on it than fish in control lakes. From an energetic perspective, turbidity could increase the energy allowed to growth by favouring prey detection and decreasing expenses due to food searching activity (Sirois & Dodson 2000a, Utne-Palm 2002, Shoji et al 2005. The increase of DOC in cut lakes may have lead to higher growth rate by favouring prey detection and lowering energy costs allocated to prey searching when feeding on Daphnia spp.…”

Section: Feeding Success and Growth Of Yoy Yellow Perch In Relation Tmentioning

confidence: 99%

“…The increase of DOC in cut lakes may have lead to higher growth rate by favouring prey detection and lowering energy costs allocated to prey searching when feeding on Daphnia spp. The enhancement of feeding with increasing turbidity may be explained by the higher detection of preys as well as an increase in feeding activity caused by a lowered risk of prédation (Gregory & Northcote 1993, Utne-Palm 2002, Shoji & Tanaka 2006b). …”

Section: Feeding Success and Growth Of Yoy Yellow Perch In Relation Tmentioning

confidence: 99%

Impact des coupes forestières sur l'écologie des jeunes stades de vie chez la perchaude (Perca flavescens) :

Leclerc¹

2010

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Visual feeding of fish in a turbid environment: Physical and behavioural aspects

Cited by 331 publications

References 87 publications

‘Selfish herds’ of guppies follow complex movement rules, but not when information is limited

‘Selfish herds’ of guppies follow complex movement rules, but not when information is limited

Tactical Decisions for Changeable Cuttlefish Camouflage: Visual Cues for Choosing Masquerade Are Relevant from a Greater Distance than Visual Cues Used for Background Matching

Impact des coupes forestières sur l'écologie des jeunes stades de vie chez la perchaude (Perca flavescens) :

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