The Aggression‐releasing Effect of the Eye‐like Spot of the Oyanirami <i>Coreoperca kawamebari</i>, a Freshwater Serranid Fish

Kohda, Yasutoshi; Watanabe, Munetaka

doi:10.1111/j.1439-0310.1990.tb00793.x

Cited by 10 publications

(2 citation statements)

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“…For example, natural eyes, eye spots and eye colour seem to be a recurrent theme of predator-prey interactions (e.g. [60] ) and a classic text-book example of warning phenotypic traits [54] . Additionally, the direction of an intruder's gaze affects escape and, alternatively, attack reactions across a wide phylogenetic spectrum, from snakes [61] , to birds [62] and mammals [63] .…”

Section: Discussionmentioning

confidence: 99%

Uncovering Dangerous Cheats: How Do Avian Hosts Recognize Adult Brood Parasites?

2012

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BackgroundCo-evolutionary struggles between dangerous enemies (e.g., brood parasites) and their victims (hosts) lead to the emergence of sophisticated adaptations and counter-adaptations. Salient host tricks to reduce parasitism costs include, as front line defence, adult enemy discrimination. In contrast to the well studied egg stage, investigations addressing the specific cues for adult enemy recognition are rare. Previous studies have suggested barred underparts and yellow eyes may provide cues for the recognition of cuckoos Cuculus canorus by their hosts; however, no study to date has examined the role of the two cues simultaneously under a consistent experimental paradigm.Methodology/Principal FindingsWe modify and extend previous work using a novel experimental approach – custom-made dummies with various combinations of hypothesized recognition cues. The salient recognition cue turned out to be the yellow eye. Barred underparts, the only trait examined previously, had a statistically significant but small effect on host aggression highlighting the importance of effect size vs. statistical significance.ConclusionRelative importance of eye vs. underpart phenotypes may reflect ecological context of host-parasite interaction: yellow eyes are conspicuous from the typical direction of host arrival (from above), whereas barred underparts are poorly visible (being visually blocked by the upper part of the cuckoo's body). This visual constraint may reduce usefulness of barred underparts as a reliable recognition cue under a typical situation near host nests. We propose a novel hypothesis that recognition cues for enemy detection can vary in a context-dependent manner (e.g., depending on whether the enemy is approached from below or from above). Further we suggest a particular cue can trigger fear reactions (escape) in some hosts/populations whereas the same cue can trigger aggression (attack) in other hosts/populations depending on presence/absence of dangerous enemies that are phenotypically similar to brood parasites and costs and benefits associated with particular host responses.

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Section: Discussionmentioning

confidence: 99%

Uncovering Dangerous Cheats: How Do Avian Hosts Recognize Adult Brood Parasites?

2012

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“…No behavioral observations have been made on tonguefishes with ocellated fins regarding the function of such conspicuous pigmentation features. For other fishes, ocellated pigment spots have been suggested to serve as species recognition signals (Kohda & Watanabe 1990;Uiblein & Nielsen 2005) or as antipredator devices (Neudecker 1989: Hasson 1991Uiblein & Nielsen 2005). During the course of exploration of hydrothermal vent areas and other habitats on Volcano-19, 57 individuals of S. maculopinnis occurred in ROV imagery (Tunnicliffe et al 2010).…”

Section: Symphurus Maculopinnis New Speciesmentioning

confidence: 99%

Description and biological observations on a new species of deepwater symphurine tonguefish (Pleuronectiformes: Cynoglossidae: Symphurus) collected at Volcano–19, Tonga Arc, West Pacific Ocean

Munroe

Tyler

Tunnicliffe

2011

Zootaxa

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Symphurus maculopinnis n. sp., described on a single specimen (USNM 398820; 84.4 mm SL), was collected by a remotely operated vehicle (ROV) exploring a hydrothermal vent area located at 561 m on Volcano–19, Tonga Arc, West Pacific (24°48.439' S, 177°0.009' W). This new species is distinctive and readily diagnosed from congeners by the following combination of characters: 1–2–2–2–1 pattern of interdigitation of dorsal proximal pterygiophores and neural spines (ID pattern), 14 caudal-fin rays, 3+6 abdominal vertebrae, 49 total vertebrae, 89 scales in a longitudinal row, 92 dorsal-fin rays, 77 anal-fin rays, blunt squarish snout, thick blind-side lips with conspicuous plicae, and conspicuous ocellated (sometimes partially) spots on posterior dorsal and anal fins. Among Symphurus, only S. ocellatus von Bonde, collected at deepwater locations off East Africa, features a similar ID pattern, 14 caudal-fin rays and spots on the posterior dorsal and anal fins. Symphurus maculopinnis differs distinctly from S. ocellatus in its lower and non-overlapping meristic features (49 vs. 54–56 total vertebrae; 92 vs. 97–103 dorsal-fin rays; and 77 vs. 85–89 anal-fin rays), its squarish (vs. pointed) snout, and thick, plicated blind-side lower lip (vs. thin, non-plicated blind-side lower lip). Additional specimens (N= 56) of S. maculopinnis observed and filmed in situ near active venting sites located between ca. 433-561 m on Volcano–19 provide the basis for behavioral and ecological information recorded for the species. Videotapes reveal one individual of S. maculopinnis featuring reversed (dextral) asymmetry from that typical (sinistral) for members of the Cynoglossidae. Specimens with reversed asymmetry are relatively rare in this family and this S. maculopinnis represents only the second known reversed individual among the approximately 42 species of deep-sea (>200 m) Symphurus.

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A guide to the literature on aggressive behavior

1990

Aggr. Behav.

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The Aggression‐releasing Effect of the Eye‐like Spot of the Oyanirami Coreoperca kawamebari, a Freshwater Serranid Fish

Cited by 10 publications

References 1 publication

Uncovering Dangerous Cheats: How Do Avian Hosts Recognize Adult Brood Parasites?

Uncovering Dangerous Cheats: How Do Avian Hosts Recognize Adult Brood Parasites?

Description and biological observations on a new species of deepwater symphurine tonguefish (Pleuronectiformes: Cynoglossidae: Symphurus) collected at Volcano–19, Tonga Arc, West Pacific Ocean

A guide to the literature on aggressive behavior

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