Shoaling preferences of two common killifish (Fundulus heteroclitus and F. diaphanus) in the laboratory and in the field: A new analysis of heterospecific shoaling

  title={Shoaling preferences of two common killifish (Fundulus heteroclitus and F. diaphanus) in the laboratory and in the field: A new analysis of heterospecific shoaling},
  author={Carrie J. Blakeslee and Nathan Ruhl and Warren J. S. Currie and Scott P. McRobert},
  journal={Behavioural Processes},
Heterospecific grouping behavior of mummichogs (Fundulus heteroclitus) and banded killifish (Fundulus diaphanus) was analyzed in the laboratory and in a freshwater tidal marsh in Cremona, Maryland. Several parameters of wild, intact shoals were measured, including species composition, body length, parasite load, gender, and any physical abnormalities. Fish collected were used for laboratory analysis of shoaling preferences. When size was equal, banded killifish and mummichogs preferred… Expand
The shoaling behavior of two cyprinid species in conspecific and heterospecific groups
It is demonstrated that in the heterospecific groups, Chinese bream elevated their percent time moving while qingbo decreased their inter-individual distance to achieve consistent collective movement; thus, the two species showed similar behavior in the mixed-species group. Expand
Size assortment in mixed-species groups of juvenile-phase striped parrotfish (Scarus iserti) in The Bahamas
The high frequency of groups with greater than a single associate species suggests that associates may benefit from not being the only phenotypically different individual in a group, perhaps due to benefits of size assortment in lowering predation risk. Expand
Impact of benzyl butyl phthalate on shoaling behavior in Fundulus heteroclitus (mummichog) populations.
Fundulus heteroclitus preference for association with familiar conspecifics of similar body length was impacted by benzyl butyl phthalate (BBP); this was found to be a statically significant resultExpand
Predation avoidance and foraging efficiency contribute to mixed-species shoaling by tropical and temperate fishes.
Support is provided for the importance of mixed-species shoaling to the persistence of tropical reef fishes in temperate regions as it mitigates predation risk whilst allowing increased foraging opportunities for A. vaigiensis in open areas. Expand
Species-specific schooling behaviour of fish in the freshwater pelagic habitat: An observational study.
Gregarianism levels depended on species morphology and body size, with larger and morphologically advanced fish tending less to sociability, which indicates that the anti-predator function of schooling behaviour is intensified with rising vulnerability of the species. Expand


Shoal Choice in the Banded Killifish (Fundulus diaphanus, Teleostei, Cyprinodontidae): Effects of Predation Risk, Fish Size, Species Composition and Size of Shoals
Banded killifish were presented individually with a choice of shoaling with either of two stimulus shoals which differed in shoal size, species composition, and fish body size, before and after a simulated avian predator attack; shoal choice was affected by predator threat only when differences between Shoal size or body size of stimulus fish were large. Expand
Influence of parasitism on shoal choice in the banded killifish (Fundulus diaphanus, Teleostei, Cyprinodontidae)
It is concluded that killifish preferred unparasitized shoals over parasitized Shoals only if all fish in the respective stimulus shoals were phenotypically uniform (either with or without black spots), and used black spots as an indicator of parasite presence to make their shoal choice. Expand
Fish shoal composition: mechanisms and constraints
  • J. Krause, D. Hoare, +5 authors R. James
  • Biology, Medicine
  • Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2000
It is suggested that fish density acts as a constraint on shoal choice, influencing both shoal size and composition, and has implications for studies on information transfer and reciprocal altruism within populations. Expand
The effects of parasitism and body length on positioning within wild fish shoals
There was no relationship between body length and parasite abundance or prevalence in the fish population which suggests bodylength and parasite status are independent predictors of positioning behaviour. Expand
Distribution of Crassiphiala bulboglossa, a parasitic worm, in shoaling fish
Investigating the relationship between parasitism and shoal composition by looking at the distribution of Crassiphiala bulboglossa, a trematode worm which uses fish as an intermediate host, within and between fish shoals in a lake found no evidence for non-random distribution of parasites among shoals was found. Expand
The social organization of free‐ranging fish shoals
No evidence was found that shoals might break up into sub-units of individuals that are more phenotypically assorted than their original shoals, and the mechanisms by which assortative groups may arise and the consequences of low group fidelity for the evolution of cooperative behaviour are discussed. Expand
The influence of food competition and predation risk on size-assortative shoaling in juvenile chub (Leuciscus cephalus)
Results indicate that predation plays a more important role than food competition for size-assortative shoaling in chub and makes it difficult to predict stable combinations of different phenotypes when foragers divide between food patches. Expand
Size‐assortativeness in multi‐species fish shoals
Findings provide strong quantitative evidence for size-sorting in free-ranging fish Shoals and raise questions concerning the formation of multi-species fish shoals. Expand
The influence of body coloration on shoaling preferences in fish
It is indicated that fish can use visual cues to discriminate actively between potential shoalmates on the basis of body coloration, as shown in the example of black and white mollies. Expand
Gut contents of common mummichogs, Fundulus heteroclitus L., in a restored impounded marsh and in natural reference marshes
We examined the gut contents of mummichogs, Fundulus heteroclitus L., entering and leaving ditches in three marsh regions within the Barn Island Wildlife Management Area in Connecticut: a restoredExpand