Sea slugs (Gastropoda: Heterobranchia) from two remote reefs of the Southern Gulf of Mexico: Cayo Arenas and Cayo Arcas

Ortigosa, Deneb; Simões, Nuno

doi:10.22201/ib.20078706e.2019.90.2596

Cited by 5 publications

(10 citation statements)

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“…Most species were represented by only one specimen, limiting the identification to the species level. These numbers are frequently recorded for the group, as low abundances are found per species in the inventories in the CAR region (Valdés et al ., 2006; Ortigosa et al ., 2013; Camacho-García et al ., 2014; Goodheart et al ., 2016) and the Campeche and Yucatan Bank (Sanvicente-Añorve et al ., 2012b; Ortigosa et al ., 2013, 2015; Ortigosa and Simões, 2019). Nevertheless, some species had high abundances in our samplings, such as Doto sp.…”

Section: Discussionmentioning

confidence: 99%

“…Ornelas-Gatdula et al ., 2012; Krug et al ., 2016; Ghanimi et al ., 2020; García-Méndez et al ., 2022). Records in the Mexican Atlantic coast are mostly from the southern GM (Campeche Bank) on the reefs: Cayo Arcas and Cayo Arenas (Ortigosa and Simões, 2019), Sisal, Madagascar and Serpiente (Ortigosa et al ., 2013) and Alacranes (Sanvicente-Añorve et al ., 2012b; Ortigosa et al ., 2015); while in the Mexican CAR coast records are scattered in a few localities from new species publications, sea slug guides or books from the tropical northwestern Atlantic (Ortea and Espinosa, 1996; Valdés et al ., 2006; Ortea and Bacallado, 2007; Ortea et al ., 2014) and molluscan inventories for the Yucatan Peninsula (Vokes and Vokes, 1983).…”

Section: Introductionmentioning

confidence: 99%

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Sea slugs (Gastropoda: Heterobranchia) associated with Autonomous Reef Monitoring Structures (ARMS) in southern Gulf of Mexico and Mexican Caribbean Sea

Vital,

Palomino-Alvarez,

Ortigosa

et al. 2023

J. Mar. Biol. Ass.

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Cryptic species in coral reefs, such as sea slugs, represent an important portion of their biodiversity, which is usually underestimated. Autonomous Reef Monitoring Structures (ARMS) have been implemented to estimate cryptic diversity in coral reefs. Therefore, this research aimed to contribute to the southern Gulf of Mexico (GM) and the Caribbean Sea (CAR) coral reefs’ sea slugs’ diversity and distribution using ARMS as a collection method. Fifty-eight ARMS were placed at three coral reefs in the GM and CAR, recovered after 1–2 years and then, disassembled at the laboratory. Plates were individually placed in trays with seawater, where we searched for sea slugs. A total of 242 organisms were found belonging to 31 species; 20 of them were identified to the species level, while 11 were determined up to genus or family. More than half of the species (19) were found in Bajo de 10 (GM), while 15 species were found in the CAR localities. Unlike previous studies, we assessed sea slugs’ diversity exclusively by an indirect sampling method. In this work, we found 9.4% of the sea slug diversity recorded in the Caribbean, and we report four determined species for the first time in the country. New records of species, and even one family for the GM stress the gap of information that we still need to fulfil in the area. We recognize ARMS as a useful tool to find juvenile, cryptic and rare species of sea slugs, as well as to standardize their quantification and record their diversity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sea slugs (Gastropoda: Heterobranchia) associated with Autonomous Reef Monitoring Structures (ARMS) in southern Gulf of Mexico and Mexican Caribbean Sea

Vital,

Palomino-Alvarez,

Ortigosa

et al. 2023

J. Mar. Biol. Ass.

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“…This reef system belongs to the Campeche Bank, which is an underwater extension of the Yucatan Peninsula (Figure 1), and comprises fringing reefs, a cluster of three sand cays spread over an area of ~4 km × ~2.6 km (Robertson et al ., 2016). In this reef complex, different habitats for molluscs, including algae and sponges, were collected manually (see Ortigosa and Simões, 2019) and stored in situ in plastic bags. Then, substrates were placed into white trays filled with seawater for posterior observation.…”

Section: Methodsmentioning

confidence: 99%

First record of a benthic ctenophore in the Mexican Atlantic:Vallicula multiformis(Platyctenida, Coeloplanidae)

et al. 2023

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Ctenophores are one of the least known invertebrate phyla in Mexico, especially the benthic forms in which studies are incomplete and infrequent, lacking information about their ecology and diversity. As part of the environmental monitoring project ‘Biodiversidad Marina de Yucatán’ conducted in the southern Gulf of Mexico and Mexican Caribbean Sea, the benthic ctenophore Vallicula multiformis (Coeloplanidae) was identified in association with green algae in the southern Gulf of Mexico, and on an autonomous reef monitoring structure in the Mexican Caribbean Sea. This finding represents the first record of the occurrence of a benthic ctenophore species in Mexican waters. We provide morphological characteristics of V. multiformis in both reef areas. Recording this species increases the known number of Mexican ctenophore fauna from 33 to 34 taxa and represents baseline information for the continuous study of the ecology and diversity of benthic ctenophores in Mexico.

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“…Geographic distribution. Florida, Bahamas, Jamaica (Clark, 1994;Krug et al, 2011;, Mexico: Alacranes reef (Rosenberg et al, 2009;Sanvicente-Añorve et al, 2012b;Ortigosa & Simões, 2019), Gallega reef (Vital-Arriaga, 2016). New record for the LTRS.…”

Section: Family: Plakobranchidae Gray 1840mentioning

confidence: 99%

“…For the reefs of the southwest of the Gulf of Mexico, most studies on sea slugs are focused on taxonomic lists. For the Bank of Campeche and Alacranes reef, there is a greater knowledge of the richness of species (Sanvicente-Añorve et al, 2012b;Ortigosa et al, 2013; with a current record of 94 species of sea slugs (Ortigosa & Simões, 2019). Two of three reef systems of Veracruz concentrate more investigations about sea slugs, being the Veracruz reef system (VRS) the best studied (Zamora-Silva & Ortigosa, 2012;Aguilar-Estrada et al, 2014;Cruz-López et al 2015;Vital-Arriaga, 2016;Barrera-Correa, 2018;Olmos-García et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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2022

Hidrobiológica

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Background: Algal blooms have increased in frequency and intensity in recent decades. Excess nutrients of anthropogenic origin may be an essential factor that gives rise to these blooms. Goals: This work aimed to study an unusual bloom of the chlorophyte Chlamydomonas in an urban lake from a morphological and chemical approach. Methods: The study site was a small lake located in Cantera Oriente, Mexico City. Sampling was performed in February 2016 (the cold-dry season); environmental variables were measured in situ, and surface samples were obtained for organism abundance and chlorophyll-a concentration. An additional sample was freeze-dried for chemical analyses, and another sample was fixed in glutaraldehyde for ultrastructural studies by SEM, TEM, LM, and confocal microscopy, using the stain Nile red to detect the presence of intracellular lipids. Results: The results of morphological observations agreed with the characteristics of the description of C. reinhardtii. The bloom abundance values were high (6.98 x 10 5 ± 1.37 x 10 5 cells mL -1 ), confirmed by the high values of chlorophyll-a concentration (5548 ± 796 µg L -1 ). The carbohydrate:protein ratio of the cells (0.15) indicates high protein synthesis during the enormous algal proliferation. The low lipid content (6.5 %) is associated with the absence of intracellular lipid granules and may be related to the availability of nitrogen and phosphorus and high vegetative multiplication. C. reinhardtii synthesizes essential fatty acids, such as alpha-linolenic acid (Omega 3), a precursor of beneficial lipids in human cardiovascular and neurological health. Conclusions: The bloom consisted mainly of Chlamydomonas reinhardtii and it significantly correlated with the chlorophyll a concentration, indicating high photosynthetic capacity and active cell division. Linoleic acid (Omega 3), an important substance for human health, was present in the alga composition. A controlled culture of this alga could improve the Omega 3 concentration offering a biotechnological resource for the future.

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Sea slugs (Gastropoda: Heterobranchia) from two remote reefs of the Southern Gulf of Mexico: Cayo Arenas and Cayo Arcas

Abstract: Taxonomy and systematics Sea slugs (Gastropoda: Heterobranchia) from two remote reefs of the Southern Gulf of Mexico: Cayo Arenas and Cayo Arcas Babosas marinas (Gastropoda: Heterobranchia) de dos arrecifes remotos del sur del golfo de México: Cayo Arenas y Cayo Arcas

Cited by 5 publications

References 30 publications

Sea slugs (Gastropoda: Heterobranchia) associated with Autonomous Reef Monitoring Structures (ARMS) in southern Gulf of Mexico and Mexican Caribbean Sea

Sea slugs (Gastropoda: Heterobranchia) associated with Autonomous Reef Monitoring Structures (ARMS) in southern Gulf of Mexico and Mexican Caribbean Sea

First record of a benthic ctenophore in the Mexican Atlantic:Vallicula multiformis(Platyctenida, Coeloplanidae)

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