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- Svensson, Ola, 1971-, et al.
(författare)
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Supplementary material from "How sexual and natural selection interact and shape the evolution of nests and nesting behaviour in fishes"
- 2023
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Annan publikation (refereegranskat)abstract
- Among ray-finned fishes that provide parental care, many spawn in constructed nests, ranging from bowls, burrows and ridges to nests made of algae or bubbles. Because a nest by definition is a construction that enhances the nest-builder's fitness by helping it meet the needs of the developing offspring, nest-building behaviour is naturally selected, as is a preference for spawning with mates that provide well-built nests. However, nest-building behaviour can also be sexually selected, when nest traits increase mating success, protect against sperm competition or nest take-overs by conspecifics. Here, we offer a systematic review, with examples of how competition for sites and location of fish nests relates to sexual selection. We examine direct and indirect benefits of mate choice linked to nest traits, and different types of nests, from a sexual selection perspective. Nest-related behaviours are often under both natural and sexual selection, and we disentangle examples where that is the case, with special attention to females. We highlight some taxa in which nest building is likely to be sexually selected, but lack of research has left them uninvestigated. Some of them are established aquarium species, making them particularly amenable for future research. Finally, we compare with arthropods, amphibians and birds.This article is part of the theme issue ‘The evolutionary ecology of nests: a cross-taxon approach’.
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| 3. |
- Svensson, Ola, 1971-, et al.
(författare)
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Supporting information about Pundamilia azurea, Pundamilia igneopinnis, Pundamilia nyererei, Pundamilia pundamilia and Pundamilia sp. ‘red head’ : Supplementary Material S1
- 2023
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Annan publikation (refereegranskat)abstract
- Among all known Lake Victoria haplochromines, females alone brood the eggs and fry in their mouths, occasional exceptions in the lab notwithstanding (Seehausen 1996). Free-swimming fry are guarded for a few days (Seehausen, 1996). Long-term pair bonds are unknown, and the offspring of a single clutch may be sired by multiple males (Svensson et al., 2017). Females are generally more cryptic, whereas males are larger, more conspicuous and aggressively territorial (Seehausen, 1996). The males have bright nuptial colouration of either one of three patterns that are widespread among Lake Victoria cichlid species and referred to as ‘blue’, ‘red dorsum’ or ‘red chest’ (Seehausen et al., 1998; Seehausen and van Alphen, 1999), each of which also exists in melanic forms where the underlying colour pattern can be largely disguised. Among rocky shore cichlids, these different colour pattern groups are associated with different habitats: ‘blue’ and ‘red chest’ males breed in shallow water over gently sloping substrate, ‘red dorsum’ males breed in similar habitats but deeper, and melanic forms breed even deeper or at steeply dropping rock faces (Seehausen, 1996). The five species of the present study belong to a complex of more than 20 congeneric taxa (Seehausen, 1996; Seehausen et al., 1998). They originate from south-eastern Lake Victoria (Tanzania) around islands in the Speke Gulf; Igombe Island, Makobe Island, Ruti Island, Zue Island, not further apart than 50km (Figure 1). All have similar ecology, inhabiting rocky shores and reefs and feeding largely on plankton and benthic invertebrates (Bouton et al., 1997; Maan et al., 2008; Seehausen, 1996; Seehausen et al., 1998). Their phylogenetic relationships are complicated and characterized by lineage fusion through admixture and lineage fission through speciation (Meier et al., in press).
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