Do ecological traits of low abundance and niche overlap promote hybridisation among coral-reef angelfishes?

Vitelli, Federico; Hyndes, Glenn A.; Saunders, Benjamin J.; Blake, David; Newman, Stephen J.; Hobbs, Jean‐Paul A.

doi:10.1007/s00338-019-01816-6

Cited by 5 publications

(3 citation statements)

References 37 publications

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“…Indeed, there is evidence to suggest that in some instances, interspecies hybridization between harems is influenced by mate choice rather than accidental fertilization [48,51]. However, these studies have been conducted on very closely related species in species complexes along hybrid zones, and so the influence of intentional versus unintentional hybridization in distantly related sympatric species remains uncertain.…”

Section: Discussion (A) Hybridization Among the Pomacanthidaementioning

confidence: 99%

Angels in disguise: sympatric hybridization in the marine angelfishes is widespread and occurs between deeply divergent lineages

et al. 2020

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Hybridization events are not uncommon in marine environments where physical barriers are attenuated. Studies of coral reef taxa have suggested that hybridization predominantly occurs between parapatric species distributed along biogeographic suture zones. By contrast, little is known about the extent of sympatric hybridization on coral reefs, despite the large amount of biogeographic overlap shared by many coral reef species. Here, we investigate if the propensity for hybridization along suture zones represents a general phenomenon among coral reef fishes, by focusing on the marine angelfishes (family Pomacanthidae). Although hybridization has been reported for this family, it has not been thoroughly surveyed, with more recent hybridization studies focusing instead on closely related species from a population genetics perspective. We provide a comprehensive survey of hybridization among the Pomacanthidae, characterize the upper limits of genetic divergences between hybridizing species and investigate the occurrence of sympatric hybridization within this group. We report the occurrence of hybridization involving 42 species (48% of the family) from all but one genus of the Pomacanthidae. Our results indicate that the marine angelfishes are among the groups of coral reef fishes with the highest incidences of hybridization, not only between sympatric species, but also between deeply divergent lineages.

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Section: Discussion (A) Hybridization Among the Pomacanthidaementioning

confidence: 99%

Angels in disguise: sympatric hybridization in the marine angelfishes is widespread and occurs between deeply divergent lineages

et al. 2020

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“…The two‐spined pygmy angelfish, Centropyge bispinosa (Günther, 1860), is one of the most widely distributed angelfish species and can be found on almost all tropical Indo‐Pacific coral reefs (Allen et al ., 1998), making it an ideal candidate to examine the magnitude and direction of life‐history variation . Centropyge bispinosa form haremic social groups and are known to be highly site attached, associating with high‐complexity reef habitats where they feed predominantly on turf algae (Eagle et al ., 2001; Hobbs et al ., 2011; Myers, 1991; Pyle, 2001; Vitelli et al ., 2019).…”

Section: Introductionmentioning

confidence: 99%

Regional versus latitudinal variation in the life‐history traits and demographic rates of a reef fish, Centropyge bispinosa, in the Coral Sea and Great Barrier Reef Marine Parks, Australia

Lowe

Payet

Harrison

et al. 2021

Journal of Fish Biology

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Environmental temperature is an important determinant of physiological processes and life histories in ectotherms. Over latitudinal scales, variation in temperature has been linked to changes in life‐history traits and demographic rates, with growth and mortality rates generally being greatest at low latitudes, and longevity and maximum length being greater at higher latitudes. Using the two‐spined angelfish, Centropyge bispinosa, as our focal species, we compared growth patterns, growth rates, longevity, mortality, asymptotic length and maximum length across 22 reefs that span 13° of latitude within the Great Barrier Reef Marine Park (GBRMP) and the Coral Sea Marine Park (CSMP), Australia. We found no predictable latitudinal variation in mortality rates, growth patterns, growth rates, asymptotic or maximum length of C. bispinosa at regional to biogeographic scales. However, C. bispinosa consistently exhibited reduced longevity at lower, warmer latitudes within the CSMP. The greatest differences in mean maximum length of C. bispinosa were between continental (GBRMP) and oceanic (central CSMP) reefs of similar latitude, with individuals being larger on average on continental versus oceanic reefs. The lack of predictable life‐history and demographic variation in C. bispinosa across a 13° latitudinal gradient within the CSMP, coupled with differences in mean maximum length between continental and oceanic reefs at similar latitudes, suggest that local environmental conditions have a greater influence than environmental temperature on the demographic rates and life‐history traits of C. bispinosa.

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“…Today, finding natural hybrids of fish species is common, especially on coral reefs, with over 75 species documented that hybridize both in oceans [2][3][4] and in freshwater [5]. The low abundance of one of the parent species combined with a high niche overlap promotes hybridization [6]. Documentation of hybrid fishes is routine, using color photography to preserve the living coloration matched with DNA samples when possible.…”

Section: Introductionmentioning

confidence: 99%

Johnston Atoll: Reef Fish Hybrid Zone between Hawaii and the Equatorial Pacific

Lobel

Randall

2020

Diversity

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Johnston Atoll is isolated in the Central Pacific Ocean (16°45′ N 169°31′ W) about 1287 km (800 miles) southwest of Honolulu, Hawaii and 1440 km (900 miles) north of the equatorial Line Islands, Kiribati. The labrid species, Thalassoma lutescens, has a wide range of distribution in the equatorial Pacific. The related species, Thalassoma duperrey, is endemic to the Hawaiian Islands. The pelagic larvae of both species dispersed to Johnston Atoll, where we found a mix of adult phenotypes representing a range of hybridization events over generations. A hybrid acanthurid was also documented. In addition, the arrival and colonization of two pomacentrid (damselfish) species to the atoll was observed in 1999. These pomacentrid sister-species, Abudefduf abdominalis and A. vaigiensis, have become established populations with subsequent hybridization. The biogeography of the Johnston Atoll coral reef fish population shows some degree of local population retention. It is also evident that this biogeographic isolation is periodically compromised by large ocean current oscillations in the equatorial and central Pacific Ocean that bring larval fishes from either Hawaii or the Line Islands, and may distribute Johnston Atoll originating larvae elsewhere as well. The reef fauna and oceanography of this atoll provides the circumstances for improving scientific insight into marine fish speciation and island biogeography.

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Do ecological traits of low abundance and niche overlap promote hybridisation among coral-reef angelfishes?

Cited by 5 publications

References 37 publications

Angels in disguise: sympatric hybridization in the marine angelfishes is widespread and occurs between deeply divergent lineages

Angels in disguise: sympatric hybridization in the marine angelfishes is widespread and occurs between deeply divergent lineages

Regional versus latitudinal variation in the life‐history traits and demographic rates of a reef fish, Centropyge bispinosa, in the Coral Sea and Great Barrier Reef Marine Parks, Australia

Johnston Atoll: Reef Fish Hybrid Zone between Hawaii and the Equatorial Pacific

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