Mid-ocean isolation and the evolution of Hawaiian reef fishes

Hourigan, Thomas F.; Reese, Ernst S.

doi:10.1016/0169-5347(87)90018-8

Cited by 94 publications

(65 citation statements)

References 15 publications

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“…Melichthys niger : Walsh 1984), so a broad range in dispersal potential exists among taxa. The planktonic stages of reef fishes must travel very large geographic distances (both latitude and longitude) to colonize the Hawaiian Islands, if born outside of the archipelago, or to disperse outside of the archipelago, if produced within it (Hourigan & Reese 1987). However, reef fish populations within the archipelago undoubtedly exchange many propagules every generation between adjacent reefs because of the relatively short distances between neighboring reefs.…”

Section: Environmental Influences Of Endemismmentioning

confidence: 99%

“…Previous evaluations of endemism in Hawaiian reef fishes have been restricted to species presence (e.g. see Randall 1996) or have semi-quantitatively summarized patterns of relative abundance (Hourigan & Reese 1987). We emphasize the densities of numerically and biomass-dominant species and endemic and non-endemic assemblages, and relate densities to latitude in order to explore geographic patterns for both endemics and non-endemics.…”

Section: Introductionmentioning

confidence: 99%

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Spatial patterns of endemism in shallow-water reef fish populations of the Northwestern Hawaiian Islands

DeMartini¹,

Friedlander²

2004

Mar. Ecol. Prog. Ser.

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The spatial distribution and magnitude of endemism in shallow-water (<18 m) reef fishes of the 10 Northwestern Hawaiian Islands (NWHI) are described in terms of occurrence, and numerical and biomass densities, using a series of diver-observation surveys conducted during September/October 2000, 2001. Based on species-presence in our surveys, we found endemism to be equal (20.6% using all available data) for fishes in the NWHI and the Main Hawaiian Islands (MHI; 20.9%). On average, percentage endemism was much higher based on the biomass (37%) and numerical densities (52%) of endemics, increased with latitude, and was especially pronounced at the 4 northernmost reefs that are the most ancient emergent geological features of the archipelago. Endemic reef fishes were appreciably smaller bodied than non-endemics within the NWHI. Median body size did not vary with latitude and longitude for either endemics or nonendemics, negating environmental effects. Reef fish populations at higher latitude reefs included larger proportions of young-of-year (YOY) recruits. YOY length frequencies did not differ for most species between northern and southern reefs, suggesting that a seasonal lag in spawning and recruitment at higher latitudes cannot explain the greater YOY densities observed there. Disproportionate recruitment at higher-latitude reefs may be related to better growth and survivorship after settlement onto reefs, higher levels of within-reef and regional reseeding at higher latitudes, or other factors. Resolution of these issues will be difficult, but it is profoundly important to the future siting of no-take Marine Protected Areas (MPAs) within the NWHI Coral Reef Ecosystem Reserve and to the rational conservation and management of reef fish resources throughout the Hawaiian Archipelago.

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Section: Environmental Influences Of Endemismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spatial patterns of endemism in shallow-water reef fish populations of the Northwestern Hawaiian Islands

DeMartini¹,

Friedlander²

2004

Mar. Ecol. Prog. Ser.

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“…Hourigan and Reese 1987, Kosaki et al 1991, Galzin et al 1994. Galzin et al (1994) found that, although there is no relationship between variation in lagoon structure and species diversity of reef fishes in French Polynesian atolls, the lack of a lagoon connected to the open sea is associated with severely reduced diversity.…”

Section: A Depauperate Fish Faunamentioning

confidence: 99%

Zoogeography of the shorefish fauna of Clipperton Atoll

Robertson

Allen

1996

Coral Reefs

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Abstract.One hundred and fifteen species of fishes (14 oceanic, plus 101 shore and nearshore species) are known from Clipperton Island, a small, remote coral atoll in the tropical eastern Pacific (TEP). This fish fauna includes only ~ 14% of the region's shallow-water species, and also is depauperate relative to the fish faunas of other isolated tropical islands. The island's isolation, small size, reduced habitat diversity, and oceanic environment contribute to this paucity of species.Fifty-two species at Clipperton can be identified as TEP; these include 37 widespread species, six species shared only with the Revillagigedo Islands [the nearest (950 km) offshore shoals], and eight endemic to Clipperton. Endemics species apparently have a mix of west and east Pacific origins. Sixty-three species are transpacific; they include three new records (of N aso surgeonfishes) that may be vagrants recruited > 4,000 km from Oceania.Clipperton is situated at the juncture between the TEP and Oceania. Its fish fauna contains about equal numbers of TEP and transpacific species. This faunal structure reflects the relative influence of surface currents from Oceania and the TEP. Although most of Clipperton's transpacific shorefishes are widespread in eastern Oceania, the Clipperton fauna has specific affinities to the fauna of the Line Islands, which are located within the main eastbound current from Oceania. Clipperton may therefore be a major stepping stone for dispersal between Oceania and the remainder of the TEP. About 50% of the non-oceanic, tropical transpacific fishes occur there, and at least 75% of those species apparently have resident populations at the island.

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“…Two reproductive strategies are also reported for coral reef fishes by Hourigan & Reese (1987). The first strategy is one whereby demersal eggs are protected by the adults, and is associated with low fecundity (25 to 10 000 eggs) and short larval duration (15 to 30 d).…”

Section: Introductionmentioning

confidence: 99%

Genetic differentiation in relation to restricted larval dispersal of the convict surgeonfish Acanthurus triostegus in French Polynesia

Planes¹

1993

Mar. Ecol. Prog. Ser.

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Genetic markers were used to study larval dispersal in coral reef fishes in order to investigate the impact of migration during the pelagic phase on island recruitment. Samples of Acanthurus trjostegus were collected from 11 sites in French Polynesia in order to examine 3 different spatial scales (Island, Archipelago and Polynesia). To examine the effects of gene flow on population heterogeneity and population substructuring in A. triostegus, starch gel electrophoresis on 10 polymorphic loci encoding 10 enzymes was used [heterozygoty (H) = 0.325 f 0.045; polyrnorphism level = 0.3231. Nei's genetic distances calculated on the 10 polymorphic loci were very high (between 0.004 and 0.194 with an average of 0.058) and G-tests made on a single locus between pairwse samples showed 5 groups to be significantly different: 1 group comprised samples from T~ahura, Tubuai. Maiao, Tetiaroa, Pt. Paroa and Tahiti; 1 group comprised samples from Muroroa and Managreva and 3 other groups comprised the isolated samples from Takapoto, Bora-Bora and Nuku-H~va respectively. Fixation index (F,,) values indicate significant differentiation between the 11 samples (F, = 0.0886 on 11 populations), even between Bora-Bora and Moorea which are separated by 250 km. Estimates of gene flow (N,m: absolute numer of migrants at equilibrium), assuming equilibnum between the samples, were < 10 individuals per generation, which is sufficient to ensure that the same alleles will be shared over long periods, but not sufficient to maintain identical allelic frequencies between populations A hypothesis is proposed to illustrate the genetic structure of A. triostegus observed in French Polynesia based on ocean currents and the behaviour of the larval oceanic phase.

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Mid-ocean isolation and the evolution of Hawaiian reef fishes

Cited by 94 publications

References 15 publications

Spatial patterns of endemism in shallow-water reef fish populations of the Northwestern Hawaiian Islands

Spatial patterns of endemism in shallow-water reef fish populations of the Northwestern Hawaiian Islands

Zoogeography of the shorefish fauna of Clipperton Atoll

Genetic differentiation in relation to restricted larval dispersal of the convict surgeonfish Acanthurus triostegus in French Polynesia

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