First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)

Zootaxa ◽  
2019 ◽  
Vol 4559 (3) ◽  
pp. 501 ◽  
Author(s):  
YAMALY BARRAGÁN ◽  
CARLOS SÁNCHEZ ◽  
ESTEFANÍA RODRÍGUEZ
Keyword(s):  
Gulf Of California ◽  
Sea Anemones ◽  
Bathymetric Distribution ◽  
La Paz ◽  
Mexican Pacific ◽  
Diagnostic Characters

Sea anemones from the Mexican Pacific are poorly known. We report and redescribe eight species of sea anemones from La Paz Bay in the southern Gulf of California, Mexico. As a result of this inventory, we validate records for 30 species from the Mexican Pacific, 23 of them from the Gulf of California and 15 of those present in La Paz Bay. We provide taxonomic diagnoses, images of internal and external anatomy, size ranges and types of cnidae, and geographic and bathymetric distribution, and discuss the taxonomic diagnostic characters for each species. This study is the first illustrated inventory of sea anemones from La Paz Bay. 

Taxonomy and diversity of Hydrozoa (Cnidaria, Medusozoa) of La Paz Bay, Gulf of California

Zootaxa ◽  
2020 ◽  
Vol 4808 (1) ◽  
pp. 1-37
Author(s):  
MARÍA A. MENDOZA-BECERRIL ◽  
MARIAE C. ESTRADA-GONZÁLEZ ◽  
ALEJANDRA MAZARIEGOS-VILLARREAL ◽  
LUISA RESTREPO-AVENDAÑO ◽  
ROGELIO D. VILLAR-BELTRÁN ◽  
...  
Keyword(s):  
Phylogenetic Relationships ◽  
Gulf Of California ◽  
New Records ◽  
Species Boundaries ◽  
La Paz ◽  
Mexican Pacific ◽  
Taxonomic Descriptions

The Mexican Pacific has been the focus of several research expeditions, with 90 species of hydromedusae and more than 200 species of hydroids recorded for the region. However, only a few of these reports include taxonomic descriptions, hindering inferences of the phylogenetic relationships, species boundaries, and diversity of Hydrozoa in Mexican waters. In this study, we present detailed and illustrated descriptions of new records of hydromedusae and hydroids for La Paz Bay, Gulf of California. We found a total of 16 species comprising 15 genera, with three new records for the Gulf of California (polyps of Antennella secundaria, Bimeria vestita, and Ventromma halecioides), two new records for the Mexican Pacific (medusa of Clytia linearis, polyp of Halopteris violae), and we redescribe Obelia tenuis. We show that the diversity of Hydrozoa in the Mexican Pacific is likely underestimated, and we emphasize the importance of taxonomic and systematic studies of hydroids and hydromedusae in Mexico. 

scholarly journals NEW DATA ON THE DISTRIBUTION OF Spatulodinium pseudonoctiluca (NOCTILUCALES:KOFOIDINIACEAE) IN THE MEXICAN PACIFIC

2011 ◽  
Vol 26 (1) ◽  
pp. 33 ◽  
Author(s):  
I. Gárate-Lizárraga
Keyword(s):  
Los Angeles ◽  
Cell Size ◽  
Gulf Of California ◽  
La Paz ◽  
Mexican Pacific ◽  
Spring Period

In this paper the distribution of the dinoflagellate Spatulodinium pseudonoctiluca in different areas of the Mexican Pacific is depicted based on samples gathered during 2005-2010. This species is first recorded for Bahía de los Ángeles, Loreto and Bahía de Mazatlán in the Gulf of California, and in the southwest portion of the Mexican Pacific at Bahía de Acapulco, Guerrero and Salina Cruz, Oaxaca. This species appears in the study area mainly during the winter-spring period. The mature cells of S. pseudonoctiluca range from 100-173 μm in length and 89-120 μm in width. Cell size of the gymnodiniod stages observed in Bahía de La Paz ranged from 90 to 190 μm in length. Nuevos datos sobre la distribución de Spatulodinium pseudonoctiluca (Noctilucales: Kofoidiniaceae) en el Pacífico Mexicano Se presenta la distribución del dinoflagelado Spatulodinium pseudonoctiluca en diferentes áreas del Pacífico Mexicano con base en muestras obtenidas durante el periodo 2005-2010. Esta especie se registra por primera vez para la Bahía de Los Ángeles, Loreto y Bahía de Mazatlán en el Golfo de California y en la Bahía de Acapulco, Guerrero, y Salina Cruz, Oaxaca, en la porción suroccidental del Pacifico Mexicano. En el área de estudio S. pseudonoctiluca se presenta principalmente en el período invierno-primavera. Las células maduras de S. pseudonoctiluca midieron 100–173 μm de largo, y 89–120 μm de ancho; los estadios gymnodinioides observados en la Bahía de La Paz midieron 90–190 μm de largo.

scholarly journals ATLAS DE IDENTIFICACIÓN DE LARVAS DE PECES DE LA SUBDIVISIÓN ELOPOMORPHA DEL PACÍFICO MEXICANO

2013 ◽  
Vol 28 (2) ◽  
pp. 7
Author(s):  
E. A. González -Navarro ◽  
R. J. Saldierna -Martínez ◽  
G. Aceves -Medina ◽  
S. P. A. Jiménez -Rosenberg
Keyword(s):  
Gulf Of California ◽  
Baja California ◽  
Fish Larvae ◽  
Central Pacific ◽  
The West ◽  
La Paz ◽  
Mexican Pacific ◽  
Larval Fishes ◽  
Gulf Of Tehuantepec ◽  
Leptocephalus Larvae

El objetivo principal de este trabajo es presentar la composición de especies de la Subdivisión Elopomorpha, contenida en la colección científica de las larvas de peces del Pacífico Mexicano, que pertenece al Centro Interdisciplinario de Ciencias Marinas del Instituto Politécnico Nacional. Presentamos fichas descriptivas de 23 especies recolectadas con redes de arrastre de zooplancton en el Golfo de California, la Bahía de La Paz, la costa occidental de Baja California, el Pacífico Central Mexicano y el Golfo de Tehuantepec, incluyendo larvas pertenecientes a las familias Elopidae, Albulidae, Muraenidae, Ophichthyidae, Congridae y Nettastomatidae. Las descripciones proporcionan patrones morfológicos, merísticos y la pigmentación que permiten identificar las larvas leptocéfalas en nuestra colección. Identification Atlas of larval fishes of the Subdivision Elopomorpha from the Mexican Pacific The main objective of this work is to present the species composition of the Subdivision Elopomorpha, housed in the Scientific Collection of Fish larvae from the Mexican Pacific, at the Centro Interdisciplinario de Ciencias Marinas of the Instituto Politécnico Nacional. We provide descriptive cards for 23 species collected with zooplankton trawls throughout the Gulf of California, La Paz bay, the west coast of Baja California, the Mexican Central Pacific and the Gulf of Tehuantepec. Larvae belonging to the families Elopidae, Albulidae, Muraenidae, Ophichthyidae, Congridae and Nettastomatidae are included. The descriptions provide morphological, meristic and pigmentation patterns that allow to identify the leptocephalus larvae in our collection.

scholarly journals NUEVOS REGISTROS DE DINOFLAGELADOS DESNUDOS PARA EL GOLFO DE CALIFORNIA, MÉXICO

2007 ◽  
Vol 22 (1-2) ◽  
pp. 37 ◽  
Author(s):  
I. Gárate-Lizárraga ◽  
G. Verdugo-Díaz
Keyword(s):  
Gulf Of California ◽  
New Record ◽  
New Records ◽  
La Paz ◽  
Mexican Pacific ◽  
Rare Taxa

Se presentan cuatro nuevos registros de dinoflagelados y el reporte de dos dinoflagelados desnudos planctónicos para la Bahía de La Paz y el Golfo de California. Los Brachidiniales Asterodinium gracile y Brachidinium sp. son nuevos registros para el Pacífico Mexicano y Brachidinium capitatum es nuevo registro para el Golfo de California. Se conoce poco acerca de la distribución y morfología de estas especies ya que son raras y se han reportado en pocas ocasiones. A. gracile y Kofoidinium pavillardii son consideradas especies de la flora de sombra. En este trabajo se documentaron fotográficamente todas las especies. New records of naked dinoflagellates from the Gulf of California, Mexico Four new records of naked planktonic dinoflagellate and two rare taxa were found in Bahía de La Paz, Gulf of California. The Brachidiniales Asterodinium gracile and Brachidinium sp. are new records for the Mexican Pacific and Brachidinium capitatum is a new record for the Gulf of California. Little is known about the distribution and morphology of these species since they are rare and have been scarcely reported in the worldwide literature. A. gracile and Kofoidinium pavillardii are considered as members of the shade flora. All species are photographically documented.

Amended definitions for Aplysinidae and Aplysina (Porifera, Demospongiae, Verongiida): on three new species from a remarkable population in the Gulf of California

Zootaxa ◽  
2018 ◽  
Vol 4455 (2) ◽  
pp. 322 ◽  
Author(s):  
PATRICIA GÓMEZ ◽  
BÁRBARA GONZÁLEZ-ACOSTA ◽  
CARLOS SÁNCHEZ-ORTÍZ ◽  
ZVI HOFFMAN ◽  
CLAUDIA J. HERNÁNDEZ-GUERRERO
Keyword(s):  
New Species ◽  
Gulf Of California ◽  
The Other ◽  
Morphological Evidence ◽  
La Paz ◽  
Mexican Pacific ◽  
Species Comparisons ◽  
Three New Species ◽  
Definition Of ◽  
Molecular Sequencing

Verongiid sponges inhabiting the La Paz region, Gulf of California are described herein as new species. Although morphological evidence was sufficient to determine the identity between species, we have confirmed their uniqueness and relationships with molecular (CO1 and ITS1 and 2), and ecological studies. An amended definition of family Aplysinidae and genus Aplysina is presented to highlight a novel skeletal trait for the latter, clearly described herein as a complex of dendritic fibers sustained by anastomosed fibers deep in the choanosome. This novel fiber arrangement combination is a constant trait of Aplysina encarnacionae sp. nov. and A. airapii sp. nov., which otherwise conform to our current concept of Aplysina. The former species has a long tubular morphology, reddish purple color, with the longest dendritic fibers; while A. airapii sp. nov. is a short tubular sponge, yellow with reddish tints, and smaller choanosomal dendritic fibers that depart from a uniplanar anastomosed skeleton. A third species, A. sinuscaliforniensis sp. nov., is characterized by a completely anastomosed skeleton, massive habit with short tubes superimposed one over the other, sympatric with the other new species. Comparisons with Suberea azteca verified that the same novel skeletal architecture described here occurs in the latter, while Aiolochroia thiona examined as well, proved to bear an anastomosed skeleton only, besides sharing more features with Aplysina than with any other genera in Verongiida. Moreover, molecular sequencing recovered “S.” azteca nested in the Aplysina clade, prompting us to reallocate it in Aplysina, as originally proposed. The new species described herein are probably endemics within the Gulf of California since they have not been recorded elsewhere along the Mexican Pacific coast.

scholarly journals Linking Habitat and Associated Abiotic Conditions to Predict Fish Hotspots Distribution Areas within La Paz Bay: Evaluating Marine Conservation Areas

Diversity ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 212
Author(s):  
Francisco Javier Urcádiz-Cázares ◽  
Víctor Hugo Cruz-Escalona ◽  
Mark S. Peterson ◽  
Rosalía Aguilar-Medrano ◽  
Emigdio Marín-Enríquez ◽  
...  
Keyword(s):  
Gulf Of California ◽  
Management Plan ◽  
Marine Conservation ◽  
Fish Diversity ◽  
Rocky Shores ◽  
Conservation Areas ◽  
Niche Modelling ◽  
La Paz ◽  
Abiotic Conditions ◽  
Presence Data

Hotspots are priority marine or terrestrial areas with high biodiversity where delineation is essential for conservation, but equally important is their linkage to the environmental policies of the overall region. In this study, fish diversity presences were linked to abiotic conditions and different habitat types to reveal multi-species and hotspots models predicted by ecological niche modelling methods within the Bay of La Paz, Mexico (south of Gulf of California). The abiotically suitable areas for 217 fish species were identified based on historical (1975–2020) presence data sets and a set of environmental layers related to distances from mangroves and rocky shores habitats, marine substrate, and bottom geomorphology conditions. Hotspot model distribution was delineated from a multi-species model identifying areas with ≥60 species per hectare and was compared to the marine conservation areas such Balandra Protected Natural Area (BPNA), illustrating how these models can be applied to improve the local regulatory framework. The results indicate that (1) there is a need for the BPNA to be enlarged to capture more of the delineated hotspot areas, and thus an update to the management plan will be required, (2) new conservation areas either adjacent or outside of the established BPNA should be established, or (3) Ramsar sites or other priority areas should be subject to legal recognition and a management plan decreed so that these vital habitats and fish diversity can be better protected.

scholarly journals A MULTI-SPECIES MICROALGAE BLOOM IN BAHIA DE LA PAZ, GULF OF CALIFORNIA, MEXICO (JUNE 2008)

2009 ◽  
Vol 24 (1) ◽  
pp. 15 ◽  
Author(s):  
I. Gárate-Lizárraga ◽  
C. J. Band-Schmidt ◽  
F. Aguirre-Bahena ◽  
T. Grayeb del Alamo
Keyword(s):  
Phytoplankton Biomass ◽  
Gulf Of California ◽  
Phytoplankton Community ◽  
Red Tide ◽  
Total Density ◽  
La Paz ◽  
Gyrodinium Instriatum ◽  
High Species Richness ◽  
Myrionecta Rubra ◽  
Ecological Importance

Red tide patches were observed in Bahía de La Paz in June 17 and 18 of 2008. According to temperature and wind data this bloom occurred under upwelling-like conditions. Examination of the red tide samples showed the ciliate Myrionecta rubra and the naked dinoflagellates Gyrodinium instriatum and Katodinium glaucum as the main species responsible for this bloom. Total density (microalgae and ciliate) at the sampling stations was similar on both days, varying from 4607 × 103 cells L-1 to 4976 × 103 cells L-1 on the first day, and from 4172 × 103 cells L-1 to 5024 × 103 cells L-1 on the second day. Phytoplankton biomass (chlorophyll a) observed during the first day of the bloom was 1.5 mg m-3. Dinoflagellates and diatoms were the most numerically important phytoplankton groups. The phytoplankton community showed a high species richness, particularly heterotrophic dinoflagellates and ebridians. The ecological importance of the heterotrophic component of naked dinoflagellates and the ebriids for this bay is discussed. Florecimiento multiespecífico de microalgas en la Bahía de La Paz, Golfo de California, México (Junio, 2008) Durante los días 17 y 18 de junio de 2008, se observó una marea roja en la Bahía de La Paz. De acuerdo con los datos de temperatura y de vientos, este florecimiento ocurrió bajo condiciones muy similares a las de una surgencia. El examen de las muestras de marea roja revelaron que el ciliado Myrionecta rubra y los dinoflagelados desnudos Gyrodinium instriatum y Katodinium glaucum fueron las principales especies responsables de esta proliferación. La densidad total (microalgas y ciliado) fue similar en ambos días, variando de 4607 × 103 céls L-1 a 4976 × 103 céls L-1 durante el primero y entre 4172 × 103 céls L-1 y 5024 × 103 céls L-1 el segundo día, respectivamente. La biomasa fitoplanctónica (clorofila a) medida durante el primer día del florecimiento fue de 1.5 mg m3. Los dinoflagelados y las diatomeas fueron los dos grupos del fitoplancton numéricamente más importantes. Se observó una comunidad fitoplanctónica con una alta riqueza de especies, particularmente de dinoflagelados y ebriidos heterotróficos. Se discute la importancia del componente heterotrófico de los dinoflagelados desnudos y ebriidos.

scholarly journals Bio-optical characterization of the waters of the Bay of La Paz, southern Gulf of California, during late spring 2004

2020 ◽  
Vol 54 (3) ◽  
pp. 343
Author(s):  
Erik Coria-Monter ◽  
María Adela Monreal-Gómez ◽  
David Alberto Salas de León ◽  
Elizabeth Durán-Campos
Keyword(s):  
Primary Production ◽  
Gulf Of California ◽  
Net Primary Production ◽  
Light Extinction ◽  
La Paz ◽  
Light Extinction Coefficient ◽  
Production Values ◽  
Subsequent Calculation ◽  
Natural Fluorescence ◽  
Community Growth

Information on selected bio-optical properties and primary production values of the waters of the Bay of La Paz, southern Gulf of California, is reported during June 2004, a region characterized to have very rich biodiversity, including endemic and endangered species, with high ecological relevance. In-situ measurements of natural fluorescence and photosynthetically available radiation (PAR) enabled the subsequent calculation of the incident irradiance (E0), the light extinction coefficient (k), compensation depth (Zc) and critical depth (Zcr). The results suggest the presence of light propitious conditions for phytoplankton community growth and net primary production, which are highly significant for the potential development of models of light penetration, ocean color, primary productivity, and analyses of organic carbon energy flow.

Impact of a Mesoscale Cyclonic Eddy on the Phytoplankton Biomass of Bay of La Paz in the Southern Gulf of California

2021 ◽  
Vol 74 (4) ◽  
Author(s):  
Joselyn Midori Sánchez-Mejía ◽  
María Adela Monreal-Gómez ◽  
Elizabeth Durán-Campos ◽  
David Alberto Salas De León ◽  
Erik Coria-Monter ◽  
...  
Keyword(s):  
Phytoplankton Biomass ◽  
Gulf Of California ◽  
Cyclonic Eddy ◽  
La Paz

Morphological and molecular characterization of two species of Gelidium (Gelidiales, Rhodophyta) from Mexico: G. nayaritense sp. nov. and the new record of G. sanyaense

Phytotaxa ◽  
2021 ◽  
Vol 527 (3) ◽  
pp. 161-176
Author(s):  
NATALY QUIROZ-GONZÁLEZ ◽  
MA. EDITH PONCE-MÁRQUEZ ◽  
NORMA LÓPEZ-GÓMEZ ◽  
DENÍ RODRÍGUEZ
Keyword(s):  
Gulf Of California ◽  
Phylogenetic Analyses ◽  
Distinct Species ◽  
Tropical Region ◽  
Mexican Pacific ◽  
Molecular Approaches ◽  
Diagnostic Characteristics ◽  
Morphological Differences ◽  
First Time

Gelidium pusillum is a species reported from the northern Gulf of California to the tropical region of the Mexican Pacific, but there is wide morphological variation among populations. The objective of this research was to evaluate of the Mexican species using morphological and molecular approaches, with the markers rbcL and COI-5P. This study examined 12 samples from four sites in the Mexican tropical Pacific. Phylogenetic analyses resolved these specimens within two clades separated from the topotype material of G. pusillum. The main morphological differences with other Mexican and phylogenetic closely related species were size, branching pattern, branching order, distribution of internal rhizoidal filaments, and shape of the tetrasporangial sori. The sequence divergences between these clades and the morphological differences support their representing distinct species so that Gelidium nayaritense sp. nov. is proposed for tropical specimens of the Mexican Pacific, whose diagnostic characteristics are the little or absent branching, its small size, as well as the presence of internal rhizoidal filaments concentrated in the subcortex, further G. sanyaense is register for first time from Mexico and Eastern Pacific.

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