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 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.

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.

Excavating sponges from the Pacific of Central America, descriptions and a faunistic record

Zootaxa ◽  
2018 ◽  
Vol 4370 (5) ◽  
pp. 451 ◽  
Author(s):  
CRISTIAN PACHECO ◽  
JOSÉ LUIS CARBALLO ◽  
JORGE CORTÉS ◽  
JOHANNA SEGOVIA ◽  
ALEJANDRA TREJO
Keyword(s):  
Costa Rica ◽  
El Salvador ◽  
Central America ◽  
New Records ◽  
Taxonomic Status ◽  
Mexican Pacific ◽  
Excavating Sponges ◽  
Lack Of Information ◽  
Taxonomic Descriptions ◽  
The Pacific

Excavating sponges are one of the main groups of bioeroders in coral reefs. Their diversity has been thoroughly studied in some regions: in the Caribbean, the Mediterranean, and the Indo-Pacific, including the Mexican Pacific. However, there is a lack of information from the Pacific of Central America, with only a few records from Panama and Costa Rica. This study provides additional distributional records and taxonomic descriptions of species collected between 2011 and 2016 at nine localities along the Pacific coast of El Salvador, Nicaragua, Costa Rica and Panama. A total of fourteen species of excavating sponges from three orders, three families, and five genera are considered valid in this area. Nine are new records for Central America, six are new records for El Salvador, three are new records for Nicaragua and eleven are new records for Costa Rica. The species collected from Panama were already recorded before. The species here described are Cliona amplicavata, Cliona californiana, Cliona euryphylle, Cliona microstrongylata, Cliona aff. mucronata, Cliona pocillopora, Cliona tropicalis, Cliona vermifera, Cliothosa tylostrongylata, Pione cf. carpenteri, Pione mazatlanensis, Thoosa calpulli, Thoosa mismalolli and Siphonodictyon crypticum. We also reviewed the literature related to excavating sponges from Central America, and the taxonomic status of respective species was updated. We provide a faunistic record of 14 excavating sponge species for Central America. Our data are expected to be useful for management and conservation purposes.  

scholarly journals PROLIFERATION OF Amphidinium carterae (GYMNODINIALES: GYMNODINIACEAE) IN BAHÍA DE LA PAZ, GULF OF CALIFORNIA

2012 ◽  
Vol 27 (2) ◽  
pp. 37 ◽  
Author(s):  
I. Gárate -Lizárraga
Keyword(s):  
Gulf Of California ◽  
New Records ◽  
Seawater Temperature ◽  
Prorocentrum Minimum ◽  
Benthic Species ◽  
La Paz ◽  
Amphidinium Carterae ◽  
The Pacific

During a sampling on 15 December 2011 in Bahía de La Paz, a bloom of the benthic dinoflagellate Amphidinium carterae was detected. Its abundance ranged from 28.2 to 64.8 × 103 cells L–1. Cells of A. carterae varied in length from 18 to 28 μm and 13 to 18 μm in wide (n = 30). The presence of A. carterae and benthic species of diatoms and dinoflagellates at the surface could be an indicator of upwelling water generated by northwestern winds. Seawater temperature during the bloom was 20 °C. Also, new records of dinoflagellates for the Mexican coast of the Pacific are here reported: Amphidiniopsis hirsuta, Amphidiniopsis sp., Amylax buxus, Cochlodinium pulchellum, Cochlodinium virescens, Durinskia cf. baltica, Gyrodinium sp., Thecadinium sp., and Prorocentrum minimum var. triangulatum. Proliferación de Amphidinium carterae (Dinophyceae: Gymnodiniales) en Bahía de La Paz, Golfo de California Durante un muestreo realizado el 15 de Diciembre de 2011 en Bahía de La Paz se detectó un florecimiento del dinoflagelado bentónico Amphidinium carterae. Los valores de abundancia variaron de 28.2 a 64.8 × 103 céls L–1. Los especímenes de A. carterae presentaron un intervalo de tallas de 18 a 28 μm de longitud y de 13 a 18 μm de ancho (n = 30). La presencia de A. carterae, así como de especies bentónicas de diatomeas y dinflagelados en superficie podrían indicar aguas de surgencia debido a la influencia de los vientos del noroeste en esta temporada. La temperatura del agua durante el florecimiento fue de 20 °C. También se reportan nuevos registros de dinoflagelados para la costa pacífica de México: Amphidiniopsis hirsuta, Amphidiniopsis sp., Amylax buxus, Cochlodinium pulchellum, Cochlodinium virescens, Durinskia cf. baltica, Gyrodinium sp., Thecadinium y Prorocentrum minimum var. triangulatum.

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.

Checklist of reef decapod crustaceans (Crustacea: Decapoda) in the southern Gulf of California, México

Zootaxa ◽  
2009 ◽  
Vol 2119 (1) ◽  
pp. 39-50 ◽  
Author(s):  
LUIS HERNÁNDEZ ◽  
EDUARDO F. BALART ◽  
HÉCTOR REYES-BONILLA
Keyword(s):  
Species Richness ◽  
Gulf Of California ◽  
New Records ◽  
Scuba Diver ◽  
Decapod Crustaceans ◽  
La Paz ◽  
Reef Community ◽  
Suitable Area ◽  
Reef Fauna

Recent studies of reef fauna near La Paz bay and Loreto bay in the Gulf of California have promoted interest in recognize the assemblages of invertebrates close to the reefs. Crustaceans that inhabit coral heads have received little attention because of their small size. Additionally, the methods used in evaluating the reef community need to be carefully managed to avoid damaging the corals. A list of forty-four decapods species found at La Paz and Loreto areas is presented. Quarterly sampling trips were made from May 2004 to July 2008. At each area, six sites were selected because the coral substrate covered a suitable area. The marked survey sites were traversed by a SCUBA diver and censuses of conspicuous invertebrates were made. Attempts to avoid disturbing any aspect of the habitat was of primary importance. Of the 44 species recorded, just 20 species were common to both areas. Species richness for the two areas showed 70.9% similarity. Range extensions and new records for some species are presented.

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. 

Morphology and taxonomy of Dinophysis species of the section Hastata (Dinoflagellata), including the description of Dinophysis conjuncta sp. nov., from the Mexican marine waters

2013 ◽  
Vol 93 (5) ◽  
pp. 1187-1202 ◽  
Author(s):  
Karina Esqueda-Lara ◽  
Dulce Parra-Toriz ◽  
David U. Hernández-Becerril
Keyword(s):  
Electron Microscopy ◽  
New Species ◽  
Gulf Of Mexico ◽  
Gulf Of California ◽  
New Records ◽  
Full Description ◽  
Distribution Data ◽  
Marine Waters ◽  
Mexican Pacific ◽  
Southern Gulf Of Mexico

There have been recent attempts to improve our knowledge about dinoflagellates of the order Dinophysales either in Mexican marine waters or worldwide, and although new records and even new species have reliable illustrations and descriptions, this group is so diverse that it needs to be studied in more detail. This paper is the product of the analysis of net phytoplankton material collected from coasts of the tropical Mexican Pacific (Gulf of California, Central Mexican Pacific and Gulf of Tehuantepec), and the southern Gulf of Mexico. Material was studied using light microscopy and scanning electron microscopy (SEM). Eleven taxa (10 species and one variety) of the section Hastata were fully identified, with nine species studied for the first time by electron microscopy (only Dinophysis hastata and D. schuettii had been previously studied by SEM), and including seven new records for the Mexican Pacific (Dinophysis monacantha, D. nias, D. phalacromoides, D. pusilla, D. swezyae, D. uracantha var. mediterranea, and D. uracanthoides), and one new record for the Gulf of Mexico (Dinophysis uracanthoides). Two species remain as unidentified, as only one specimen of each was found. Additionally, we studied in detail the new species, Dinophysis conjuncta sp. nov., for which a full description is provided. Descriptions, measurements, illustrations and local distribution data are provided for each species.

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.

Sign in / Sign up

Export Citation Format

Share Document