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10 results for “Labroides”
Figure 2 in First Record of two Labroid fishes of the genera Halichoeres and Cheilinus (Perciformes: Labridae) from Northern Bay of Bengal
Figure 2. Floral wrasse, Cheilinus chlorourus from Digha, India (ZSI/F12074/2).
Figure 1 in First Record of two Labroid fishes of the genera Halichoeres and Cheilinus (Perciformes: Labridae) from Northern Bay of Bengal
Figure 1. Goldstripe wrasse, Halichoeres zeylonicus from Digha, India (CIFE/KOL/MW/F-0223).
FIGURES 1 & 2. 1, Rhipidocotyle labroidei n in Rhipidocotyle labroidei n. sp. (Digenea: Bucephalidae) from Labroides dimidiatus (Valenciennes) (Labridae)
FIGURES 1 & 2. 1, Rhipidocotyle labroidei n. sp. ex Labroides dimidiatus, from Lizard Island, ventral view; 2, coldfixed Rhipidocotyle sp. from the rectum of L. bicolor off Moorea in ventral view. Scale bars 100µm.
FIGURE 3. Transversotrema elegans n in A cryptic complex of Transversotrema species (Digenea: Transversotrematidae) on labroid, haemulid and lethrinid fishes in the Indo-West Pacific Region, including the description of three new species
FIGURE 3. Transversotrema elegans n. sp. ex Choerodon venustus, Heron Island, southern Great Barrier Reef. Scalebars = 500 µm.
FIGURE 4. Transversotrema gigantica n in A cryptic complex of Transversotrema species (Digenea: Transversotrematidae) on labroid, haemulid and lethrinid fishes in the Indo-West Pacific Region, including the description of three new species
FIGURE 4. Transversotrema gigantica n. sp. ex Chlorurus sordidus, Heron Island, southern Great Barrier Reef. Scalebars = 500 µm.
FIGURE 1 in A cryptic complex of Transversotrema species (Digenea: Transversotrematidae) on labroid, haemulid and lethrinid fishes in the Indo-West Pacific Region, including the description of three new species
FIGURE 1. Phylogram of maximum parsimony analysis of all host/parasite/location combinations of species of Transversotrema from fishes from the Great Barrier Reef and Ningaloo Reef, WA. Bootstrap values are shown at the nodes.
Data from: The evolution of pharyngognathy: a phylogenetic and functional appraisal of the pharyngeal jaw key innovation in labroid fishes and beyond
The perciform group Labroidei includes approximately 2,500 species and comprises some of the most diverse and successful lineages of teleost fishes. Composed of four major clades, Cichlidae, Labridae (wrasses, parrotfishes and weed whitings), Pomacentridae (damselfishes), and Embiotocidae (surfperches), labroids have been an icon for studies of biodiversity, adaptive radiation, and sexual selection. The success and diversification of labroids have been largely attributed to the presence of a major innovation in the pharyngeal jaw apparatus, pharyngognathy, which is hypothesized to increase feeding capacity and versatility. We present results of large-scale phylogenetic analyses and a survey of pharyngeal jaw functional morphology, that allow us to examine the evolution of pharyngognathy in a historical context. Phylogenetic analyses were based on a sample of 188 acanthomorph species, primarily percomorphs, and DNA sequence data collected from ten nuclear loci that have been previously used to resolve higher-level ray-finned fish relationships. Phylogenies inferred from this dataset using maximum likelihood and Bayesian analyses indicate polyphyly of the traditional Labroidei and clearly separate Labridae from the remainder of the traditional labroid lineages (Cichlidae, Embiotocidae, and Pomacentridae). These three "chromide" families all grouped together within a newly discovered clade of 40 families and more than 5,300+ species (>30% of percomorphs and >17% of all ray-finned fishes), which we name Ovalentaria for its characteristic demersal, adhesive eggs with chorionic filaments. This fantastically diverse clade includes some of the most species-rich lineages of marine and freshwater fishes, including all representatives of the Cichlidae, Embiotocidae, Pomacentridae, Ambassidae, Gobiesocidae, Grammatidae, Mugilidae, Opistognathidae, Pholidichthyidae, Plesiopidae (including Notograptus), Polycentridae, Pseudochromidae, Atherinomorpha, and Blennioidei. Beyond the discovery of Ovalentaria, this study provides a surprising, but well-supported, hypothesis for a convict-blenny (Pholidichthys) sister group to the charismatic cichlids and new insights into the evolution of pharyngognathy. Bayesian stochastic mapping ancestral state reconstructions indicate pharyngognathy has evolved at least six times in percomorphs, including four separate origins in members of the former Labroidei, one origin in the Centrogenyidae, and one origin within Beloniformes. Our analyses indicate that all pharyngognathous fishes have a mechanically efficient biting mechanism enabled by the muscular sling and a single lower jaw element. However, a major distinction exists between Labridae, which lacks the widespread, generalized percomorph pharyngeal biting mechanism, and all other pharyngognathous clades, which possess this generalized biting mechanism in addition to pharyngognathy. This suggests that labrids have a functionally more restricted pharyngeal system than all other pharyngognathous clades.
Data from: The evolution of pharyngognathy: a phylogenetic and functional appraisal of the pharyngeal jaw key innovation in labroid fishes and beyond
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FIGURE 5. Transversotrema lacerta n in A cryptic complex of Transversotrema species (Digenea: Transversotrematidae) on labroid, haemulid and lethrinid fishes in the Indo-West Pacific Region, including the description of three new species
FIGURE 5. Transversotrema lacerta n. sp. ex Lethrinus atkinsoni, Lizard Island, northern Great Barrier Reef. Scalebars = 500 µm.
FIGURE 2 in A cryptic complex of Transversotrema species (Digenea: Transversotrematidae) on labroid, haemulid and lethrinid fishes in the Indo-West Pacific Region, including the description of three new species
FIGURE 2. Scatterplot of number of vitelline follicles enclosed by cyclocoel v body width of T. elegans n. sp., T. gigantica n. sp. and T. lacerta n. sp. (Legend: ․=T. gigantica; ♦=T. elegans; Ο=T. lacerta).
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