Concurrent habitat fluctuations of two economically important marine species in the Southeast Pacific Ocean off Chile in relation to ENSO perturbations

2021 ◽  
Author(s):  
Zhiping Feng ◽  
Wei Yu ◽  
Xinjun Chen
Keyword(s):  
Pacific Ocean ◽  
Marine Species ◽  
Southeast Pacific

New and little-known marine species of Pinaciophora, Rabdiaster and Thomseniophora gen. nov. (Rotosphaerida: Pompholyxophryidae)

2012 ◽  
Vol 93 (5) ◽  
pp. 1211-1229 ◽  
Author(s):  
Kenneth H. Nicholls
Keyword(s):  
Pacific Ocean ◽  
New Genus ◽  
Marine Species ◽  
Single Type ◽  
Haida Gwaii ◽  
Western Atlantic ◽  
Queen Charlotte Islands ◽  
Marine Habitats ◽  
Near Shore ◽  
One New Species

Near-shore benthic sediment samples collected at low tide from the western Atlantic Ocean (Sable Island, Nova Scotia, Canada) and the eastern Pacific Ocean (Haida Gwaii (Queen Charlotte Islands), British Columbia, Canada) were searched for little-known species of the rhizarian (Cercozoa) genera Pinaciophora, Rabdiaster and other related rotosphaerids. Several representatives with complete investitures of silica-scales (the structure of which is taxonomically diagnostic) were studied by transmission and scanning electron microscopy. The validity of the genus Pinaciophora (sensu Penard, 1904) as defined by a single type of plate-scale only, was strengthened by the discovery of Pinaciophora rubicunda and of another previously undescribed entity, both of which lacked spine-scales. Several earlier reports of loose scales from marine habitats, and erroneously identified as the freshwater P. fluviatilis, might be assigned to P. marina sp. nov. The new genus Thomseniophora was erected to include all ‘Pinaciophora' previously known to produce spine-scales and seven new taxa were described. Six other little-known species of Thomseniophora, Pinaciophora and Rabdiaster were described from the Canadian west coast (Pacific Ocean) including one new species of Pinaciophora. The addition of Thomseniophora brings the number of genera assigned to the Rotosphaerida to six: Pinaciophora, Thomseniophora, Rabdiaster, Rabdiophrys and Pompholyxophrys. The presence of several apparently closely related taxa in the same collection (same location and sampling date) strengthens the conclusion that relatively small differences in the morphology of their siliceous scales were more likely caused by genetic differences than by environmental influences.

Wind waves climatology of the Southeast Pacific Ocean

2017 ◽  
Vol 37 (12) ◽  
pp. 4288-4301 ◽  
Author(s):  
Catalina Aguirre ◽  
José A. Rutllant ◽  
Mark Falvey
Keyword(s):  
Pacific Ocean ◽  
Wind Waves ◽  
Southeast Pacific

Comparative Concentrations of Metals in Marine Species from French Frigate Shoals, North Pacific Ocean

2001 ◽  
Vol 42 (11) ◽  
pp. 1049-1054 ◽  
Author(s):  
Xiu–Sheng Miao ◽  
Lee Ann Woodward ◽  
Chris Swenson ◽  
Qing X Li
Keyword(s):  
Pacific Ocean ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Marine Species

scholarly journals First record of hybridization between greenChelonia mydasand hawksbillEretmochelys imbricatasea turtles in the Southeast Pacific

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1712 ◽  
Author(s):  
Shaleyla Kelez ◽  
Ximena Velez-Zuazo ◽  
Aldo S. Pacheco
Keyword(s):  
Pacific Ocean ◽  
Sea Turtles ◽  
Sea Turtle ◽  
Morphological Evidence ◽  
Healthy Population ◽  
Turtle Species ◽  
East Pacific ◽  
The Pacific ◽  
Southeast Pacific ◽  
The Pacific Ocean

Hybridization among sea turtle species has been widely reported in the Atlantic Ocean, but their detection in the Pacific Ocean is limited to just two individual hybrid turtles, in the northern hemisphere. Herein, we report, for the first time in the southeast Pacific, the presence of a sea turtle hybrid between the green turtleChelonia mydasand the hawksbill turtleEretmochelys imbricata.This juvenile sea turtle was captured in northern Peru (4°13′S; 81°10′W) on the 5thof January, 2014. The individual exhibited morphological characteristics ofC. mydassuch as dark green coloration, single pair of pre-frontal scales, four post-orbital scales, and mandibular median ridge, while the presence of two claws in each frontal flipper, and elongated snout resembled the features ofE. imbricata. In addition to morphological evidence, we confirmed the hybrid status of this animal using genetic analysis of the mitochondrial gene cytochrome oxidase I, which revealed that the hybrid individual resulted from the cross between a femaleE. imbricataand a maleC. mydas. Our report extends the geographical range of occurrence of hybrid sea turtles in the Pacific Ocean, and is a significant observation of interspecific breeding between one of the world’s most critically endangered populations of sea turtles, the east PacificE. imbricata, and a relatively healthy population, the east PacificC. mydas.

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