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443 results for “Eastern Tropical Pacific”
Temperature Profiles from the Eastern Tropical Pacific (0-300m) from January-February 2023
<p>Vertical temperature profiles taken as part of a research expedition to Clipperton Atoll. Water column temperature profiles were measured down to 300m depth by deploying a <em>RBRduet<sup>3</sup> T.D.</em> sensor<sup> </sup>(Range -5°C to 35°C; Initial accuracy ±0.002°C; Resolution <0.00005°C; time constant <1s). Data (downcast and upcast) is averaged by depth into 1 meter bins, and the standard deviation and number of measurements in each bin are included as columns in the data.</p> <p> </p> <p>This data is supplemented locally for the shallow waters of Clipperton Atoll with 21 water column profiles measured using a Mares Puck Pro dive computer (Range: -10 °C to +50 °C; Resolution: 1°C; Accuracy: ± 2 °C) worn by one of the expedition divers.</p>
Fig. 7 in Coordinated hunting behaviors of mixed-species groups of piscivores and associated species at Isla del Coco National Park (Eastern Tropical Pacific)
Fig. 7. Cluster analysis of species co-occurrences in groups based on the Ward linkage method and Pearson distance. Abbreviations for each species are defined in Tab. 1. Note two dominant clusters (cluster 1 at left and cluster 2 at right). An asterisk below species codes indicate membership in top 10 species based on mixed-species links.
Fig. 5 in Coordinated hunting behaviors of mixed-species groups of piscivores and associated species at Isla del Coco National Park (Eastern Tropical Pacific)
Fig. 5. Network visualization of the web of associations between species (33 species with 288 pair-wise links). The size of each species node is weighted relative to the frequency of each species in any group (abbreviations for each species are defined in Tab. 1). The lines between species nodes are weighted by the relative frequency of associations between each species pair.
Fig. 3 in Coordinated hunting behaviors of mixed-species groups of piscivores and associated species at Isla del Coco National Park (Eastern Tropical Pacific)
Fig. 3. Examples of mixed-species hunting groups observed to ca. 35 m depth. (A) Caranx melampygus, Dermatolepis dermatolepis and Bodianus diplotenia at a crevice. Note D. dermatolepis and B. diplotaenia are able to maneuver deep into the crevice while C. melampygus follow from above and search for escaping prey. (B) Group composed of C. melampygus, Trianodon obesus, Cephalopholis panamensis and unidentified muraenid eel (hidden within crevices) hunt for prey within crevices amongst coral and coral rubble along reef edge. (C) Lutjanus argentiventris, D. dermatolepis, C. melampygus and B. diplotaenia hunt for prey as group traverses low relief volcanic pavement along a pinnacle. (D) Group composed of D. dermatolepis, C. melampygus and Aulostomus chinensis. Note position of A. chinensis in lead over C. melampygus. (E) C. melampygus follows above a muraenid eel hunting within narrow crevices. (F) As in previous image, D. dermatolepis follows above muraenid eel hunting within narrow crevice. (G) C. melampygus follow B. diplotaenia hunting over sand and volcanic rubble habitat. (H) B. diplotaenia and A. chinensis hunt in tandem along edge of pinnacle.
FIGURE 12 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 12. Serpulids in the Mexican Pacific. A. Hydroides inermis, operculum; B – C. H. ochotereana, operculum and spine; D. H. panamensis, operculum; E. H. sanctaecrucis, operculum; F. H. similis, operculum; G. H. trompi, operculum; H. Pomatostegus kroyeri, operculum.
FIGURE 11 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 11. Serpulids in the Tropical Eastern Pacific. A. Hydroides cf. amri, operculum and detail of verticil spine (modified of Bastida-Zavala & ten Hove 2003); B. H. brachyacantha, operculum; C. H. crucigera, operculum; D. H. deleoni, operculum; E. H. dirampha, operculum; F – G. H. elegans, sclerotized operculum in aboral view and fleshy operculum in lateral view; H. H. gairacensis, operculum; I. H. glandifera, operculum; J. H. humilis, operculum.
FIGURE 8 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 8. Distribution of Spirobranchus incrassatus, S. minutus, Vermiliopsis multiannulata and Salmacina tribranchiata.
FIGURE 7 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 7. Distribution of and Pomatostegus kroyeri, Protula balboensis, Pseudovermilia occidentalis and Pyrgopolon ctenactis.
FIGURE 9 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 9. Gross scheme of the likely routes followed by introduced sabellids and serpulids: 1) Branchiomma bairdi, Crucigera websteri, Hydroides elegans, H. gairacensis, H. salazarvallejoi, H. sanctaecrucis, Pseudovermilia multispinosa and Pyrgopolon ctenactis; 2) Protula balboensis and Spirobranchus minutus; 3) Parasabella pallida, H. dirampha and H. elegans; 4) Ficopomatus miamiensis; 5) H. crucigera; 6) Pseudobranchiomma punctata; 7) F. miamiensis; 8) B. bairdi, H. elegans (?), H. gairacensis and H. sanctaecrucis; 9) Ficopomatus uschakovi.
FIGURE 3 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 3. Distribution of Ficopomatus uschakovi, Crucigera websteri, Hydroides cf. amri, H. brachyacantha and H. crucigera.
FIGURE 2 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 2. Distribution of the sabellids Branchiomma bairdi, Megalomma carunculata, Parasabella pallida and Pseudobranchiomma punctata in the Tropical Eastern Pacific, Southern California and Hawaii.
FIGURE 10 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 10. Sabellids and serpulids in the Mexican Pacific. A. Branchiomma bairdi, anterior part; B – C. Megalomma carunculata, anterior part and caruncle; D. Parasabella pallida, anterior part; E – F. Pseudobranchiomma punctata, body and detail of abdominal section; G. Ficopomatus uschakovi, anterior part; H – I. Crucigera websteri, opercula, lateral and aboral side (colors in life and preserved).
FIGURE 1 in New records of sabellids and serpulids (Polychaeta: Sabellidae, Serpulidae) from the Tropical Eastern Pacific
FIGURE 1. Study area. The Tropical Eastern Pacific, Southern California and Hawaii, with main geographical names mentioned in text.
Figure 2. – A in First record of Carolines parrotfish (Calotomus carolinus) and king angelfish (Holacanthus passer) around the Clipperton Atoll-La Passion Island (North-Eastern Tropical Pacific)
Figure 2. – A: Photograph of the female adult individual of Calotomus carolinus with a close up showing the details of the separated teeth (B), that are specific to this species (Photos E. Clua). C: Photograph of the juvenile individual of Holacanthus passer (Photo S. Planes) along with an adult individual (D) (Photo H. Debelius) in its natural environment, showing the specific vertical white stripe, which is present both in adult and juvenile individuals.
Figure 1. – A in First record of Carolines parrotfish (Calotomus carolinus) and king angelfish (Holacanthus passer) around the Clipperton Atoll-La Passion Island (North-Eastern Tropical Pacific)
Figure 1. – A: Clipperton-La Passion Island (France), Tropical Eastern Pacific Ocean. B: Approximative location of the sighting and capture of the adult female individual of Calotomus carolinus (X) and the sighting of the male individual (X') on the 11 and 13 August 2018, respectively. Approximative location of the sighting and capture of the juvenile individual of Holacanthus passer (Y) (maps modified from "Cartes de l'île de la Passion" by C. Jost, 2015).
FIGURE 5 in Two New Species of Nudibranch Mollusks from the Tropical Eastern Pacific of Mexico
FIGURE 5. Scanning electron micrographs, Rostanga pulchra MacFarland, 1905, CASIZ 097525, Punta Vicente Roca, Galápagos Islands. A. Jaw. B. Jaw rodlets. C. Entire radula. D. Inner and middle lateral teeth and rachis. E. Inner lateral teeth. F. First and second lateral teeth. G. Outer lateral teeth. H. Outer lateral tooth apices.
FIGURE 2 in Two New Species of Nudibranch Mollusks from the Tropical Eastern Pacific of Mexico
FIGURE 2. Scanning electron micrographs, Rostanga ghiselini sp. nov., holotype, CASIZ 220373. A. Caryophyllidia. B. Jaw rodlets. C. Entire radula. D. Inner lateral teeth and rachis. E. First and second lateral teeth. F. Middle lateral teeth. G. Elongate middle to outer lateral teeth. H. Outer lateral teeth.
FIGURE 4. Reproductive anatomy. A in Two New Species of Nudibranch Mollusks from the Tropical Eastern Pacific of Mexico
FIGURE 4. Reproductive anatomy. A. Rostanga ghiselini sp. nov., holotype, CASIZ 220373. B. Tenellia ivetteae sp. nov., paratype, CASIZ 222482. abbreviations: al-albumen gland, am ampulla, bc-bursa copulatrix, ej-ejaculatory portion of vas deferens, fg-female gland mass, me-membrane gland, mu-mucous gland, p-penis, pg-penial gland, pr-prostatic portion of vas deferens, rs-receptaculum seminis, st-penial stylet, v-vagina, vd-vas deferens, vg-vestibular gland. Scale = 1 mm.
FIGURE 1. Living animals. A in Two New Species of Nudibranch Mollusks from the Tropical Eastern Pacific of Mexico
FIGURE 1. Living animals. A. Rostanga ghiselini sp. nov., specimen from Punta Gringa, Bahía de los Angeles, 14 March 1992, photo by Hans Bertsch. B. Rostanga ghiselini sp. nov., holotype specimen from Punta Gringa, Bahia de los Angeles, 25 March 2017, photo by Craig Hoover. C. Tenellia ivetteae sp. nov., holotype, CASIZ 220143 (upper animal) and paratype, CASIZ (lower animal), from Punta Gringa, Bahia de los Angeles, 30 June 1992, photo by Hans Bertsch.
FIGURE 6 in Two New Species of Nudibranch Mollusks from the Tropical Eastern Pacific of Mexico
FIGURE 6. Scanning electron micrographs, Tenellia ivetteae sp. nov. A, C-G. paratype, CASIZ 222482. B. Specimen from Bahia de los Ángeles, 30 June, 1987. A. Entire jaw. B. Radular teeth, dorsal view. C. Masticatory border of jaw showing arrangement of denticles. D. Dorsal view of radular teeth. E. Lateral view of radular teeth. F. Apex of penis showing stylet. G. Detail of stylet.
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OpenNeuro
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