scholarly journals First record of Stephanostomum sp. Looss, 1899 (Digenea: Acanthocolpidae) metacercariae parasitising the pleasure oyster Crassostrea corteziensis (Hertlein) from the Mexican Pacific coast

2019 ◽  
Vol 56 (3) ◽  
pp. 211-218
Author(s):  
M. I. Grano-Maldonado ◽  
F. Rubalcava-Ramirez ◽  
A. Rodriguez-Santiago ◽  
F. Garcia-Vargas ◽  
A. Medina-Jasso ◽  
...  
Keyword(s):  
Health Risks ◽  
Host Preference ◽  
Pacific Coast ◽  
First Record ◽  
Distribution Area ◽  
Human Consumption ◽  
Mantle Tissue ◽  
Mexican Pacific ◽  
The Family ◽  
Crassostrea Corteziensis

SummaryThe aim of this investigation was to identify the parasites present in the largely understudied pleasure oyster Crassostrea corteziensis in Sinaloa state in the northwestern Mexican Pacific coast. Inspection of twenty-eight oysters collected on “Ceuta” lagoon revealed the presence of the digenean Stephanostomum sp. (Digenea: Acanthocolpidae) cysts. Metacercariae were found encapsulated and embedded in the digestive gland and mantle tissue of oysters. The prevalence of infection revealed that 84.6 % were infected, the abundance was 13.62, with a mean intensity of 16.09 per host. The members of this genus are characterized by a double crown of spines in the cephalic region surrounding the buccal opening of the worm. Significantly, we report the first incidence of the digenean Stephanostomum sp of the family Acanthocolpidae parasitizing Crassostrea corteziensis. Further we report that this bivalve is now considered a new intermediate host, and the northwestern Mexican Pacific coast is a new geographical distribution area for this digenean. The findings contribute to our understanding of the biology, biodiversity and host preference of these parasites, with implications for health risks posed by human consumption of the pleasure oyster.

First record of Cladocroce (Porifera: Haplosclerida: Chalinidae) from the Eastern Pacific ocean with the description of Cladocroce reina sp. nov.

Zootaxa ◽  
2010 ◽  
Vol 2603 (1) ◽  
pp. 65
Author(s):  
JOSE MARIA AGUILAR-CAMACHO ◽  
JOSE LUIS CARBALLO
Keyword(s):  
Pacific Coast ◽  
Current Knowledge ◽  
First Record ◽  
Shallow Waters ◽  
Principal Characteristic ◽  
Mexican Pacific ◽  
Fiber Tracts ◽  
Deep Waters ◽  
The Family ◽  
A New Species

Chalinidae is a family of haplosclerid sponges with a delicate reticulated chaonosomal skeleton of uni-, pauci- or multispicular primary lines which are connected by unispicular secondary lines, and with an ectosomal skeleton, if present, formed by a regular hexagonal, unispicular, tangential reticulation (Weerdt 2002). Currently, the family harbors only five valid genera (Chalinula, Cladocroce, Dendrectilla, Dendroxea and Haliclona; Soest et al. 2008), although recent molecular studies suggest that a new rearrangement of the present classification is needed (Redmond et al. 2007). Cladocroce was described by Topsent (1892) from specimens collected in the Atlantic Ocean. The principal characteristic of this genus is the presence of multispicular fiber tracts with a rather dense subisotropic reticulation in between (Weerdt 2002). After that, 10 species have been described, most of them from deep waters and cold climates (Putchakarn et al. 2004). Only three species have been found living in shallow waters: C. aculeata Pulitzer-Finali, 1982 from the Great Barrier Reef, C. burapha Putchakarn et al., 2004 from the Gulf of Thailand, and C. tubulosa Pulitzer-Finali, 1993 from the port of Mombasa, in Kenya. Sponge taxonomy studies in the Mexican Pacific coast have been focused mainly on hadromerids, and particularly on boring sponges (Carballo et al. 2008), and the current knowledge of haplosclerids is very scarce (Cruz-Barraza & Carballo 2006). In this paper, a new species of Cladocroce is described and compared with the other species recorded worldwide. With this contribution the genus Cladocroce increases to 12 species.

scholarly journals First record of Stibarobdella moorei (Annelida, Hirudinea, Piscicolidae) a marine leech parasitizing Octopus bimaculatus (Mollusca: Octopodidae) from the Mexican Pacific coast

2017 ◽  
Vol 54 (4) ◽  
pp. 322-329 ◽  
Author(s):  
D. J. López-Peraza ◽  
M. Hernández-Rodríguez ◽  
B. Barón-Sevilla ◽  
L. F. Bückle-Ramírez ◽  
M. I. Grano-Maldonado
Keyword(s):  
Los Angeles ◽  
Pacific Coast ◽  
Present Finding ◽  
First Record ◽  
Distribution Area ◽  
New Host ◽  
Mexican Pacific ◽  
The Pacific ◽  
The Pacific Ocean ◽  
First Time

SummaryThe occurrence of the parasitic marine leech Stibarobdella moorei (Oka, 1910) (Hirudinea: Piscicolidae) along the northwest Mexican Pacific coast is described for the first time. This ectoparasite was collected from the skin of the Octopus bimaculatus (Verril, 1983) (Mollusca: Octopodidae). Stibarobdella loricata (Hardig, 1924) is synonymized with S. moorei as this species resembles other species of the genus based on tubercle patterns and the presence of papillae and a marginal fringe on the oral sucker. The present finding throws new light on the biodiversity and host preference of the ectoparasite and suggests a successful migration to unusual host. The coast of the Pacific Ocean, particularly in the Bay of Los Angeles, Baja California, Mexico is a new geographical distribution area for S. moorei, and O. bimaculatus is a new host reported for this leech. The morphology of this ectoparasite is briefly described.

First record of Plakortis Schulze (Porifera: Homosclerophorida) from the Northeast Pacific coast, with the description of Plakortis albicans sp. nov.

Zootaxa ◽  
2005 ◽  
Vol 868 (1) ◽  
pp. 1 ◽  
Author(s):  
JOSÉ A. CRUZ-BARRAZA ◽  
JOSÉ L. CARBALLO
Keyword(s):  
Pacific Coast ◽  
First Record ◽  
Single Class ◽  
Mexican Pacific ◽  
Northeast Pacific ◽  
The Pacific ◽  
Drainage Canals ◽  
Cryptic Habitats ◽  
East Pacific Ocean ◽  
A New Species

A new species of Plakortis Schulze, 1880 from the Pacific coast of Mexico is described, which constitutes the first record of the Plakortis genus in the Northeast Pacific coast, and the first record of Homosclerophorida in the Mexican Pacific coast. Plakortis albicans sp. nov. is characterized by its white or ivory color, by a surface sculpted by subectosomic drainage canals, and by the morphological details of its skeleton, such as the presence of diods and triods in one single class, and a tangential alveolar ectosomal skeleton formed mostly by smaller diods. The only species known in the genus Plakortis from the East Pacific Ocean is Plakortis galapagensis Desqueyroux-Faúndez & van Soest, 1997, which differs from Plakortis albicans sp. nov. mainly by having diods in two distinct size classes. So far, P. albicans is only known in one locality (Mazatlán Bay), where it is relatively abundant in cryptic habitats such as under rock.

scholarly journals Oenothera resicum (Onagraceae), a new species and the first record of the family from the Revillagigedo Archipelago, Mexico

Phytotaxa ◽  
2019 ◽  
Vol 416 (1) ◽  
pp. 59-66
Author(s):  
EVA BENAVIDES ◽  
J.R. KUETHE ◽  
A. ORTIZ-ALCARAZ ◽  
J.L. LEÓN DE LA LUZ
Keyword(s):  
New Species ◽  
First Record ◽  
Conservation Assessment ◽  
Mexican Pacific ◽  
The Family ◽  
Ecological Habitat ◽  
Characteristic Features ◽  
Revillagigedo Archipelago ◽  
Basal Rosette ◽  
A New Species

Oenothera resicum (Onagraceae) is here described and illustrated. This is the first record of the Onagraceae family in the Revillagigedo Archipelago, Mexican Pacific. The new species, presently known only from Isla Clarión, has characteristic features of species of subsect. Raimannia, from which can be differentiated by its perennial habit, glabrescent large fruits, glabrous sepals, conspicuously dentated leaves, stigma surrounded by the anthers at anthesis, basal rosette absent, and its particular ecological habitat. The species description, ecological information, habitat and conservation assessment are also discussed. Additionally, a key for the species of  subsect. Raimannia distributed in Mexico is provided.

A new species of Deutella Mayer 1890 (Crustacea: Amphipoda) from the Mexican Pacific coast

Zootaxa ◽  
2019 ◽  
Vol 4612 (4) ◽  
pp. 581
Author(s):  
LUCY C. ALARCÓN-ORTEGA ◽  
JOSÉ L. CARBALLO
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
First Record ◽  
Shallow Waters ◽  
Tropical Eastern Pacific ◽  
Mexican Pacific ◽  
Fourth Report ◽  
The Pacific ◽  
The Pacific Ocean ◽  
A New Species

A new species of caprellid, Deutella mazatlanensis n. sp., is described from Mazatlán Bay, (east Pacific México). Deutella mazatlanensis was found associated with bryozoans, hydroids and sponges in shallow waters. The new species can be differentiated from the remaining species of the genus mainly by the dorsal, anteriorly directed projection on the head; the two dorsal projections and a lateral acute projection anteroventrally projected on pereonite 2 and gnathopod 2 in males. The presence of this species on the Mexican Pacific coast, constitutes the fourth report of Deutella genus for the Pacific Ocean and the first record from the tropical Eastern Pacific. 

Five new species of cotylean flatworms (Platyhelminthes: Polycladida: Cotylea) from Oaxaca, southern Mexican Pacific

Zootaxa ◽  
2020 ◽  
Vol 4819 (1) ◽  
pp. 49-83
Author(s):  
MARIELA RAMOS-SÁNCHEZ ◽  
JULIANA BAHIA ◽  
J. ROLANDO BASTIDA-ZAVALA
Keyword(s):  
New Species ◽  
Gulf Of California ◽  
First Record ◽  
Disjunct Distribution ◽  
Taxonomic Identification ◽  
Tropical Eastern Pacific ◽  
Mexican Pacific ◽  
The Family ◽  
Gulf Of Tehuantepec ◽  
Whole Mounts

The flatworms of the suborder Cotylea live in diverse marine substrates such as rocks, seaweed and sand or in association with corals. In the Mexican Pacific, particularly on the coast of Oaxaca, knowledge about cotyleans is scarce, with only one record of the genus Pseudoceros. The aim of this work was to describe the cotylean species present in the area. A total of 48 specimens were collected, fixed, mounted in whole mounts or histological sagittal and frontal histological sections of the reproductive systems. These were examined for taxonomic identification, determining five new species of four genera: Boninia oaxaquensis sp. nov., Pericelis sigmeri sp. nov., Pericelis nazahui sp. nov., Pseudoceros bicuti sp. nov. and Thysanozoon estacahuitensis sp. nov. The present study establishes the first record of the genus Boninia and the family Boniniidae for the Tropical Eastern Pacific. It also confirms the presence of the genus Pseudoceros on the coast of Oaxaca, and break the disjunct distribution of this genus (from Gulf of California to Gulf of Tehuantepec), as well as the genus Pericelis (from Canada to Galapagos Islands) and Thysanozoon (from Chile to Gulf of California).

scholarly journals Red Octopus, Octopus rubescens Berry, 1953 (Cephalopoda: Octopodidae), in the Mexican tropical Pacific

Check List ◽  
2021 ◽  
Vol 17 (4) ◽  
pp. 1107-1112
Author(s):  
María del Carmen Alejo-Plata ◽  
Miguel A. Del Río-Portilla ◽  
Oscar Illescas-Espinosa ◽  
Omar Valencia-Méndez
Keyword(s):  
North America ◽  
Digestive Tract ◽  
Pacific Coast ◽  
First Record ◽  
Tropical Pacific ◽  
Western Coast ◽  
Morphometric Characters ◽  
Mexican Pacific ◽  
Tropical Waters ◽  
Anatomical Features

“Octopus” rubescens Berry, 1953 is an octopus of temperate waters of the western coast of North America. This paper presents the first record of “O.” rubescens from the tropical Mexican Pacific. Twelve octopuses were studied; 10 were collected in tide pools from five localities and two mature males were caught by fishermen in Oaxaca. We used morphometric characters and anatomical features of the digestive tract to identify the species. The five localities along the Mexican Pacific coast provide solid evidence that populations of this species have become established in tropical waters.

First record of Axinyssa Lendenfeld, 1897 (Demospongiae, Halichondrida) from the East Pacific Ocean, with the description of Axinyssa isabela sp. nov.

Zootaxa ◽  
2008 ◽  
Vol 1784 (1) ◽  
pp. 58 ◽  
Author(s):  
JOSÉ LUIS CARBALLO ◽  
JOSÉ ANTONIO CRUZ-BARRAZA
Keyword(s):  
Pacific Ocean ◽  
National Park ◽  
Pacific Coast ◽  
First Record ◽  
Mexican Pacific ◽  
East Pacific ◽  
Vertical Walls ◽  
East Pacific Ocean ◽  
Collagen Layer ◽  
A New Species

A new species of Axinyssa Lendenfeld, 1897 (Halichondriidae, Halichondrida) is described from the Mexican Pacific Ocean, which constitutes the first record of the genus in the Eastern Pacific Ocean. Axinyssa isabela sp. nov. is an incrusting to massive cushion-shaped yellow sponge without ectosomal skeleton. The ectosome is simply a thin, translucent, partly detachable collagen layer. The collagen is also abundant in the choanosome, while spicular density is relatively low. The choanosomal skeleton is confused with ascending single spicules or spicules grouped in tracts. The tracts become slightly more organized towards the periphery, protruding on the surface in spicule bundles or in single spicules. Spicules are oxeas and derivates (styles and strongyles), 200 to 780 µm long and 3 to 15 µm thick. So far, despite the sampling of a large number of localities along the Mexican Pacific Coast during the last years, Axinyssa isabela sp. nov. has been found only at National Park “Isla Isabel” (Nayarit, Mexico), where it is relatively common, in vertical walls, small caves and overhangs at depths between 4 and 20 m.

Chrysopetalids (Phyllodocida: Chrysopetalidae) from the southern Mexican Pacific, including a new species

Zootaxa ◽  
2018 ◽  
Vol 4521 (1) ◽  
pp. 61 ◽  
Author(s):  
CHRISTOPHER CRUZ-GÓMEZ ◽  
J. ROLANDO BASTIDA-ZAVALA
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
New Records ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Mexican Pacific ◽  
The Pacific ◽  
The Family ◽  
First Time ◽  
A New Species

The family Chrysopetalidae has been poorly studied from the Pacific coast of Mexico compared to other families. Specifically from the southern Mexican Pacific, only two species of the family have been recorded in previous studies, Chrysopetalum occidentale and Paleanotus chrysolepis. In this study 311 specimens were revised, and nine species, belonging to six genera were found. Eight of these species are new records from the southern Mexican Pacific coast: Arichlidon watsonae n. sp., Bhawania cf. goodei, Chrysopetalum elegantoides, C. maculata, Hyalopale sp., Paleaequor psamathe, Paleanotus bellis and P. purpurea. A new species is also described, Arichlidon watsonae n. sp., which is characterized by the curved tips blades of the falcigers and their small and ovoid palps. Additionally, the genera Arichlidon and Hyalopale are recorded by first time from the Tropical Eastern Pacific. 

Sign in / Sign up

Export Citation Format

Share Document