Taxonomic composition and distribution of cephalochordates  (Cephalochordata: Amphioxiformes) from Mexico

Moral-Flores, Luis Fernando Del; Guadarrama-Martínez, Miguel Ángel; Flores-Coto, César

doi:10.3856/vol44-issue3-fulltext-8

Cited by 4 publications

(1 citation statement)

References 25 publications

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“…This class includes the cephalochordates; the adults are occasional swimmers since they prefer the benthic substrate for the locomotion, where they spend most of their time filtering their food (Garcia-Fernàndez & Benito-Gutiérrez, 2009). Most probably the absence of these is due to the high temperatures of the sediment, since cephalochordates generally inhabit shallow marine waters near the coast (Del Moral-Flores et al ., 2016; Galván-Villa et al ., 2017).…”

Section: Discussionmentioning

confidence: 99%

Benthic infauna associated with a shallow-water hydrothermal system of Punta Mita (Mexico)

Rodríguez-Uribe

Núñez-Cornũ²,

Prol‐Ledesma

et al. 2023

J. Mar. Biol. Ass.

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The shallow-water hydrothermal system of Punta Mita in Banderas Bay is located on the fault called Fisura de las Coronas off Punta Pantoque beach. In this area, three sites with hydrothermal vents were studied at a depth of 9 m. This study aimed to characterize the structure of the benthic infauna communities that coexist in this hydrothermal system; therefore, physicochemical parameters were measured and the organisms found in the sediment samples were identified up to the class taxonomic level. The highest temperatures (89°C) were recorded within the hydrothermal influence area, which was reflected in an inverse relationship with pH, conductivity and salinity. Sediment temperature profiles increased at greater depth. A total of 371 individuals were found and these were grouped into eight classes: Malacostraca, Maxillopoda, Gastropoda, Bivalvia, Scaphopoda, Polychaeta, Leptocardii and Stenolaemata. The Malacostraca class was the most abundant with 240 individuals, while the Scaphopoda was the lowest with 3. The organic matter contents in the sediments were higher in the areas adjacent to the hydrothermal activity. The high temperature of the hydrothermal discharges structures the benthic community since it was the factor that differed most significantly in the study sites, causing lower abundances in the area of hydrothermal influence compared with the more distant areas. Despite the above, it is concluded that the benthic community of the area with hydrothermal activity is part of the community adjacent to this influence, only in lower numbers.

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Section: Discussionmentioning

confidence: 99%

Benthic infauna associated with a shallow-water hydrothermal system of Punta Mita (Mexico)

Rodríguez-Uribe

Núñez-Cornũ²,

Prol‐Ledesma

et al. 2023

J. Mar. Biol. Ass.

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New records of the Californian lancelet Branchiostoma californiense (Cephalochordata: Branchiostomidae) from the Pacific coast of Mexico

Galván‐Villa¹,

Ríos‐Jara²,

Ayón-Parente³

2017

Revista Mexicana de Biodiversidad

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A number of specimens of the Californian lancelet, Branchiostoma californiense Andrews, 1893 were found in Isla Melendres, Sinaloa and Bahía Chamela, Jalisco, in the Mexican Pacific. The specimens were collected with a biological dredge on sandy bottoms. Some morphometric and meristic characters of the collected specimens are described and discussed herein. This is the first record of the species for the Bahía Chamela in the central Mexican Pacific and second for the Sinaloa state in the Gulf of California, confirming their distribution along the Eastern Pacific from the coast of California coast, USA to Panama. However, an extensive area of the southern Mexican Pacific (∼1,500 km from Colima to Chiapas) have scarce records of this species, this possibly due to the lack of sampling effort on this group in the area.

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

2019

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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.

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Taxonomic composition and distribution of cephalochordates (Cephalochordata: Amphioxiformes) from Mexico

Cited by 4 publications

References 25 publications

Benthic infauna associated with a shallow-water hydrothermal system of Punta Mita (Mexico)

Benthic infauna associated with a shallow-water hydrothermal system of Punta Mita (Mexico)

New records of the Californian lancelet Branchiostoma californiense (Cephalochordata: Branchiostomidae) from the Pacific coast of Mexico

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

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