Evidence map›Paper›PMID 31871184›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Predator-informed looming stimulus experiments reveal how large filter feeding whales capture highly maneuverable forage fish.

David E Cade, Nicholas Carey, Paolo Domenici, Jean Potvin, Jeremy A Goldbogen

Abstract readVideo-Audio Media
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed.

  1. Escalating competition in changing seas: baleen whales exploit killer whale prey herding.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Article
  2. Coevolutionary attack and avoidance strategies in predators and grouping prey.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Review
  3. Locomotion and hunting strategies of large vertebrate predators in pelagic waters.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Review
  4. Increases in foraging performance of humpback whales in multi-predator feeding aggregations with California sea lions.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

David E CadeHopkins Marine Station, Department of Biology, Stanford University, Pacific Grove, CA 93950; davecade@stanford.edu.ORCID 0000-0003-3641-1242
Nicholas CareyHopkins Marine Station, Department of Biology, Stanford University, Pacific Grove, CA 93950.
Paolo DomeniciIstituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino, Consiglio Nazionale delle Ricerche, IAS-CNR, 09170, Torregrande, Oristano, Italy.
Jean PotvinDepartment of Physics, Saint Louis University, St. Louis, MO 63103.
Jeremy A GoldbogenHopkins Marine Station, Department of Biology, Stanford University, Pacific Grove, CA 93950.ORCID 0000-0002-4170-7294

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The unique engulfment filtration strategy of microphagous rorqual whales has evolved relatively recently (<5 Ma) and exploits extreme predator/prey size ratios to overcome the maneuverability advantages of swarms of small prey, such as krill. Forage fish, in contrast, have been engaged in evolutionary arms races with their predators for more than 100 million years and have performance capabilities that suggest they should easily evade whale-sized predators, yet they are regularly hunted by some species of rorqual whales. To explore this phenomenon, we determined, in a laboratory setting, when individual anchovies initiated escape from virtually approaching whales, then used these results along with in situ humpback whale attack data to model how predator speed and engulfment timing affected capture rates. Anchovies were found to respond to approaching visual looming stimuli at expansion rates that give ample chance to escape from a sea lion-sized predator, but humpback whales could capture as much as 30-60% of a school at once because the increase in their apparent (visual) size does not cross their prey's response threshold until after rapid jaw expansion. Humpback whales are, thus, incentivized to delay engulfment until they are very close to a prey school, even if this results in higher hydrodynamic drag. This potential exaptation of a microphagous filter feeding strategy for fish foraging enables humpback whales to achieve 7× the energetic efficiency (per lunge) of krill foraging, allowing for flexible foraging strategies that may underlie their ecological success in fluctuating oceanic conditions.

Indexed as

Feeding BehaviorAnimalsBiological EvolutionEscape ReactionEuphausiaceaFiltrationFishesHumpback WhaleHydrodynamicsJawLocomotionModels, BiologicalOrgan SizePredatory BehaviorTime Factorsattack kinematicsfish feedinghumpback whalelooming stimuluspredator/prey

Identifiers

PMID31871184
PMCPMC6955359

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.