Evidence of limited gene flow in three species of coral reef fishes in the lagoon of New Caledonia

1998 ◽  
Vol 130 (3) ◽  
pp. 361-368 ◽  
Author(s):  
S. Planes ◽  
M. Parroni ◽  
C. Chauvet
Keyword(s):  
Gene Flow ◽  
Coral Reef ◽  
New Caledonia ◽  
Reef Fishes ◽  
Coral Reef Fishes ◽  
Limited Gene Flow

scholarly journals Inferring gene flow in coral reef fishes from different molecular markers: which loci to trust?

Heredity ◽  
2007 ◽  
Vol 99 (3) ◽  
pp. 331-339 ◽  
Author(s):  
C Fauvelot ◽  
C Lemaire ◽  
S Planes ◽  
F Bonhomme
Keyword(s):  
Molecular Markers ◽  
Gene Flow ◽  
Coral Reef ◽  
Reef Fishes ◽  
Coral Reef Fishes

Endoparasite species richness of New Caledonian butterfly fishes: host density and diet matter

Parasitology ◽  
2000 ◽  
Vol 121 (1) ◽  
pp. 65-73 ◽  
Author(s):  
S. MORAND ◽  
T. H. CRIBB ◽  
M. KULBICKI ◽  
M. C. RIGBY ◽  
C. CHAUVET ◽  
...  
Keyword(s):  
Species Richness ◽  
Coral Reef ◽  
Parasite Species ◽  
New Caledonia ◽  
Ecological Factors ◽  
Host Density ◽  
Reef Fishes ◽  
Coral Reef Fishes ◽  
Ancestral State ◽  
Parasite Species Richness

Ecological factors may influence the number of parasites encountered and, thus, parasite species richness. These factors include diet, gregarity, conspecific and total host density, habitat, body size, vagility, and migration. One means of examining the influence of these factors on parasite species richness is through a comparative analysis of the parasites of different, but related, host species. In contrast to most comparative studies of parasite species richness of fish, which have been conducted by using data from the literature, the present study uses data obtained by the investigators. Coral reef fishes vary widely in the above ecological factors and are frequently parasitized by a diverse array of parasites. We, therefore, chose to investigate how the above ecological factors influence parasite species richness in coral reef fishes. We investigated the endoparasite species richness of 21 species of butterfly fishes (Chaetodontidae) of New Caledonia. We mapped the diet characters on the existing butterfly fish phylogeny and found that omnivory appears to be ancestral. We also mapped the estimated endoparasite species richness, coded from low to high parasite species richness, on the existing butterfly fish phylogeny and found that low parasite species richness appears to be associated with the ancestral state of omnivory. Different dietary and social strategies appear to have evolved more than once, with the exception of obligate coralivory, which appears to have evolved only once. Finally, after controlling for phylogenetic relationships, we found that only the percentage of plankton in the diet and conspecific host density were positively correlated with endoparasite species richness.

Huffmanela spp. (Nematoda, Trichosomoididae) parasites in coral reef fishes off New Caledonia, with descriptions of H. balista n. sp. and H. longa n. sp.

Zootaxa ◽  
2007 ◽  
Vol 1628 (1) ◽  
pp. 23-41 ◽  
Author(s):  
JEAN-LOU JUSTINE
Keyword(s):  
New Species ◽  
Coral Reef ◽  
New Caledonia ◽  
Reef Fishes ◽  
Infected Fish ◽  
Coral Reef Fishes ◽  
Single Female ◽  
X Ray ◽  
Two New Species ◽  
New Hosts

Two new species of Huffmanela Moravec, 1987 are described from coral reef fishes caught off New Caledonia, South Pacific. H. balista n. sp. is described from the adults and eggs found in the swimbladder wall of a single Abalistes stellatus (Balistidae). The male, 9.9 mm long, has characteristic spermatids and spermatozoa. The female has a characteristic cuticularised anterior oesophagus. The eggs (70 × 34 µm) spontaneously hatch and release larvae, 260 µm long. H. longa n. sp. is described from a single female and from eggs collected in the mesentery, swimbladder and body walls of three Gymnocranius grandoculis (Lethrinidae). The female, although immature, is the longest (20.7 mm) of all species of the genus. The eggs (66 × 27 µm) have superficial filaments, and are differentiated from those of H. filamentosa Justine, 2004 from the same host, by their greater measurements. Eggs of Huffmanela mexicana Moravec et Fajer-Avila, 2000, are redescribed for comparison. The host of Huffmanela sp. of Justine, 2004, is identified as Pentapodus aureofasciatus. New observations on H. ossicola Justine, 2004 are reported, including new hosts (Bodianus busellatus and B. perditio), comparative measurements of eggs in various hosts and organs, description of larvae, 228 µm in length, and X-ray observations of the skeleton of an infected fish.

scholarly journals Colour pattern as a single trait driving speciation in Hypoplectrus coral reef fishes?

2007 ◽  
Vol 274 (1615) ◽  
pp. 1265-1271 ◽  
Author(s):  
Oscar Puebla ◽  
Eldredge Bermingham ◽  
Frédéric Guichard ◽  
Elizabeth Whiteman
Keyword(s):  
Gene Flow ◽  
Coral Reef ◽  
Assortative Mating ◽  
Reef Fishes ◽  
Coral Reef Fishes ◽  
Colour Pattern ◽  
Disruptive Selection ◽  
Reef Fish Species ◽  
Colour Patterns ◽  
Colour Morphs

Theory shows that speciation in the presence of gene flow occurs only under narrow conditions. One of the most favourable scenarios for speciation with gene flow is established when a single trait is both under disruptive natural selection and used to cue assortative mating. Here, we demonstrate the potential for a single trait, colour pattern, to drive incipient speciation in the genus Hypoplectrus (Serranidae), coral reef fishes known for their striking colour polymorphism. We provide data demonstrating that sympatric Hypoplectrus colour morphs mate assortatively and are genetically distinct. Furthermore, we identify ecological conditions conducive to disruptive selection on colour pattern by presenting behavioural evidence of aggressive mimicry, whereby predatory Hypoplectrus colour morphs mimic the colour patterns of non-predatory reef fish species to increase their success approaching and attacking prey. We propose that colour-based assortative mating, combined with disruptive selection on colour pattern, is driving speciation in Hypoplectrus coral reef fishes.

Grazing pressure of herbivorous coral reef fishes on low coral-cover reefs

Coral Reefs ◽  
2006 ◽  
Vol 25 (3) ◽  
pp. 461-472 ◽  
Author(s):  
Michelle J. Paddack ◽  
Robert K. Cowen ◽  
Su Sponaugle
Keyword(s):  
Coral Reef ◽  
Coral Cover ◽  
Reef Fishes ◽  
Grazing Pressure ◽  
Coral Reef Fishes
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