scholarly journals First Record of Amphioxus Branchiostoma californiense (Amphioxiformes: Branchiostomatidae) Adjacent to a Shallow Submarine Hydrothermal System at Banderas Bay (Mexico)

Diversity ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 227 ◽  
Author(s):  
María Carolina Rodríguez-Uribe ◽  
Rosa María Chávez-Dagostino ◽  
Luis Fernando Del Moral-Flores ◽  
Myrna Leticia Bravo-Olivas
Keyword(s):  
Environmental Conditions ◽  
Hydrothermal Vent ◽  
Hydrothermal System ◽  
First Record ◽  
Unconsolidated Sediments ◽  
Morphometric Characteristics ◽  
Mexican Pacific ◽  
Influence Area ◽  
Hydrothermal Venting

Shallow submarine hydrothermal vent systems assume differentiated environmental conditions. Some specimens of Branchiostoma californiense were found in the sediments of the influence area of the shallow hydrothermal venting in Punta Mita. This is the only lancelet species registered for the Mexican Pacific. The meristic and morphometric characteristics of the organisms first collected in unconsolidated sediments of this shallow system were reviewed, in order to determine the species. We confirm that it is the same species. This represents the first record of it for both the Banderas bay and in the influence area of a shallow hydrothermal system.

scholarly journals Two new long-rostrum cranefly species from the Cretaceous Iberian amber (Diptera, Limoniidae, Helius)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Iwona Kania-Kłosok ◽  
Wiesław Krzemiński ◽  
Antonio Arillo
Keyword(s):  
Environmental Conditions ◽  
Lower Cretaceous ◽  
Fossil Record ◽  
First Record ◽  
Northern Spain ◽  
Fossil Species ◽  
Body Morphology ◽  
Cretaceous Period ◽  
Basque Cantabrian Basin

AbstractFirst record of the genus Helius—long-rostrum cranefly from Maestrazgo Basin (eastern Spain, Iberian Penisula) is documented. Two new fossil species of the genus Helius are described from Cretaceous Spanish amber and compared with other species of the genus known from fossil record with particular references to these known from Cretaceous period. Helius turolensis sp. nov. is described from San Just amber (Lower Cretaceous, upper Albian) Maestrazgo Basin, eastern Spain, and Helius hispanicus sp. nov. is described from Álava amber (Lower Cretaceous, upper Albian), Basque-Cantabrian Basin, northern Spain. The specific body morphology of representatives of the genus Helius preserved in Spanish amber was discussed in relation to the environmental conditions of the Maestrazgo Basin and Basque-Cantabrian Basin in Cretaceous.

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.

scholarly journals A new species of the genus Smacigastes Ivanenko & Defaye, 2004 (Tegastidae, Harpacticoida, Copepoda) from the Onnuri Vent Field in the Indian Ocean

2020 ◽  
Vol 96 (2) ◽  
pp. 699-714
Author(s):  
Jong Guk Kim ◽  
Jimin Lee
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
First Record ◽  
Cold Seeps ◽  
Dichotomous Key ◽  
The Family ◽  
The Indian Ocean ◽  
A New Species

The genus Smacigastes Ivanenko & Defaye, 2004 (Harpacticoida, Copepoda) is the most primitive genus in the family Tegastidae Sars, 1904, occurring in deep-sea chemosynthetic environments, such as hydrothermal vents, cold seeps, whale falls and wood falls. Our exploration of the Onnuri Vent Field, the sixth active hydrothermal vent system in the Central Indian Ridge, resulted in the discovery of a new species in the genus Smacigastes. A detailed morphological analysis of S. pumilasp. nov. reveals that it most resembles S. barti Gollner, Ivanenko & Martínez Arbizu, 2008, described from a hydrothermal vent in the East Pacific Ridge; the new species can be distinguished from the existing species by the 8-segmented female antennule, the absence of an abexopodal seta on the antennary basis, the mandibular exopod represented by a single seta and the exopod of the first leg with five setae. This is the first record of Smacigastes in the Indian Ocean. A dichotomous key to species of the genus Smacigastes worldwide is provided.

scholarly journals Morphometric differences of Spirlin, Alburnoides Bipunctatus Bloch 1782 from the Major Catchements of Transylvania

2017 ◽  
Vol 74 (2) ◽  
pp. 177 ◽  
Author(s):  
Tudor PĂPUC ◽  
Daniel COCAN ◽  
Călin LAŢIU ◽  
Paul UIUIU ◽  
Vioara MIREȘAN
Keyword(s):  
Veterinary Medicine ◽  
Environmental Conditions ◽  
Body Shape ◽  
Aquatic Organisms ◽  
Morphometric Characteristics ◽  
Morphometric Measurements ◽  
Agricultural Sciences ◽  
Different Populations ◽  
The University

Spirlin (Alburnoides bipunctatus) is found in great numbers in most Transylvanian rivers. The species has an important role in the ecosystems in which it is found in terms of feeding and habitat occupation. The morphmetric characthers of this species vary between different habitats, outlining morphometric plasticity. Morphometric profiles were made for different populations of Spirlin, to evaluate differences in body shape. Considering that different environmental conditions influence the morphology of Spirlin populations, morphometric characteristics were determined. In order to assess differences in spirlin body shape, specimens from the four major Transylvanian catchments were collected by angling techniques. The specimens were preserved and transported to the University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca, where morphometric measurements and weight determinations were conducted in the Physiology of Aquatic Organisms Laboratory. Spirlin from Mures, Somes, Cris and Viseu catchments were studied, as it follows: 21 specimens from Aries River (Mures catchment), 61 specimens from the river Crisul Repede (Cris catchment), 21 specimens from Somesul Mic River (Somes catchment) and 20 specimens from Viseu River. A number of 39 determinations were made. The obtained results reflect the morphometric differences among populations of Spirlin from some Transylvanian main rivers.

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.

First record and distribution of Pisione longispinulata Aguado & San Martín (Annelida: Polychaeta: Pisionidae) in the Mexican Pacific coasts

2010 ◽  
Vol 6 (6) ◽  
pp. 613-617
Author(s):  
Diana Leticia Salcedo-Oropeza ◽  
Pablo Hernández-Alcántara ◽  
Vivianne Solís-Weiss
Keyword(s):  
First Record ◽  
Mexican Pacific ◽  
San Martín

scholarly journals First record of the non-indigenous bryozoan Amathia verticillata (delle Chiaje, 1822) (Bryozoa, Vesiculariidae) in the southern Mexican Pacific

Check List ◽  
2019 ◽  
Vol 15 (3) ◽  
pp. 515-522
Author(s):  
Karla J. Humara-Gil ◽  
Christopher Cruz-Gómez
Keyword(s):  
First Record ◽  
Santa Cruz ◽  
Mexican Pacific ◽  
Amathia Verticillata ◽  
First Time

The non-indigenous bryozoan Amathia verticillata (delle Chiaje, 1822) is recorded for the first time from the southern Mexican Pacific. The species was detected between 2014 and 2018 at three locations along the coast of Oaxaca, southwestern Mexico: Puerto Ángel Bay, Santa Cruz Bay, and La Blanca Island. A discussion on the introduction of the species to Oaxaca is also included.

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.

Haplomunnidae (Crustacea: Isopoda) reviewed, with a description of an intact specimen of Thylakogaster Wilson & Hessler, 1974

Zootaxa ◽  
2003 ◽  
Vol 326 (1) ◽  
pp. 1 ◽  
Author(s):  
MARINA R. CUNHA ◽  
GEORGE D.F. WILSON
Keyword(s):  
Hydrothermal Vent ◽  
New Records ◽  
First Record ◽  
Intact Specimen ◽  
East Pacific ◽  
The Family ◽  
African Coast ◽  
Mid Atlantic Ridge ◽  
Distribution And Ecology ◽  
East Pacific Ocean

The distribution and ecology of the isopod family Haplomunnidae Wilson, 1976 are reviewed with new records given for Thylakogaster Wilson & Hessler, 1974, Mid-Atlantic Ridge and east Pacific Ocean, and for Munella Bonnier, 1896, Mid-Atlantic Ridge and the eastern Atlantic near the African coast. The specimens of these two genera, collected from Lucky Strike (Mid-Atlantic Ridge), are the first record of the family from hydrothermal vent habitats. The systematics of the Haplomunnidae is updated and the synonymy of Aryballurops Gamô, 1983 with Haplomunna Richardson, 1908 is proposed. Thylakogaster lobotourus Wilson & Hessler, 1974 is redrawn from the first known intact specimen and additional description of the appendages is provided.

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