scholarly journals Sclerozoan and fouling sabellid worms (Annelida: Sabellidae) from Mexico with the establishment of two new species

2020 ◽  
Vol 8 ◽  
Author(s):  
María Ana Tovar-Hernández ◽  
María Elena García-Garza ◽  
Jesús Angel de León-González
Keyword(s):  
New Species ◽  
Coral Reefs ◽  
Gulf Of Mexico ◽  
Gulf Of California ◽  
Generic Diagnosis ◽  
Simultaneous Hermaphrodite ◽  
Mexican Pacific ◽  
Two New Species ◽  
Tropical America ◽  
Southern Gulf Of Mexico

The sabellid genera Anamobaea Krøyer, 1856 and Notaulax Tauber, 1879 are two of the most attractive polychaete worms in coral reefs. Anamobaea is represented by two Caribbean species and Notaulax with 24 species from around the world, six of them previously known to tropical America. During examination of fouling biota and sclerozoans from Mexico, Anamobaea orstedii Krøyer, 1856 was found in coral reefs from the southern Gulf of Mexico and three species of Notaulax were identified to the Mexican Pacific, two of them being new species to science. Anamobaea orstedii Krøyer, 1856 is first reported as sclerozoan of dead coral from the southern Gulf of Mexico. An amendment to the generic diagnosis of Anamobaea is provided, based on the presence of a higher number of skeletal cells than previously recorded; height, shape and exposition of the anterior peristomial ring; the non-fusion of dorsal collar margins to faecal groove; shape of collar chaetiger and abdominal chaetae and distribution and shape of radiolar ocelli. Notaulax californica (Treadwell, 1906) is reported as fouling in buoys and docks from the Gulf of California. Two new species of Notaulax are described: the former was found in hull and dock fouling from La Paz (Gulf of California) and the second one as sclerozoan of oysters from a dock fouling in Acapulco (south Mexican Pacific). In addition, reproductive features are described for the first time for A. orstedii which is a simultaneous hermaphrodite with female and males gametes found within the same segments of abdominal region. Oocytes develop synchronously and sperm morphology (spherical nucleus and rounded acrosome, four spherical mitochondria and a long free flagellum) suggest an adaptation to broadcast spawning and external fertilisation. Species of Notaulax here examined were gonochoric, with gametes distributed in abdominal segments.

scholarly journals Checklist of ascidians (Chordata, Tunicata) from the southern Gulf of Mexico

ZooKeys ◽  
2019 ◽  
Vol 832 ◽  
pp. 1-33 ◽  
Author(s):  
Lilian A. Palomino-Alvarez ◽  
Rosana Moreira Rocha ◽  
Nuno Simões
Keyword(s):  
New Species ◽  
Coral Reefs ◽  
Gulf Of Mexico ◽  
Coastal Lagoons ◽  
Shallow Waters ◽  
Starting Point ◽  
Two New Species ◽  
Southern Gulf Of Mexico ◽  
Taxonomic Studies

This study is the first inventory of ascidians from shallow waters (0–25 m) of coastal and reef habitats in the southern Gulf of Mexico where ascidian diversity is poorly known. Sampled environments in 14 locations (38 sites) with 134 samples collected from 2015 to 2017 included coral reefs, coastal lagoons, mangroves, seagrass, ports, and artificial platforms. The 31 identified species comprise 19 genera and 13 families. Ten species are newly reported in the Gulf of Mexico:AscidiapanamensisBonnet & Rocha, 2011;Ecteinascidiastyeloides(Traustedt, 1882);CystodytesroseolusHartmeyer, 1912; Eudistomaaff.amanitum Paiva & Rocha, 2018;EudistomarecifenseMillar, 1977;EuherdmaniafasciculataMonniot, 1983; Euherdmaniaaff.vitrea Millar, 1961;Polycarpacartilaginea(Sluiter, 1885);Botrylloidesmagnicoecum(Hartmeyer, 1912) andDidemnumgranulatumTokioka, 1954. Two new species will be described separately (Clavelinasp. andPyurasp.). This study provides the first records for 26 species ascidians for the region as well as describes increased distributions of ten Atlantic species. Thus, our data provide a starting point for future ecological, experimental and taxonomic studies of ascidians of the Gulf of Mexico.

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.

Nephtyidae (Polychaeta) from the Gulf of California (Mexican Pacific) with the description of two new species of Aglaophamus

2008 ◽  
Vol 89 (4) ◽  
pp. 697-710 ◽  
Author(s):  
J. Pérez-Torrijos ◽  
P. Hernández-Alcántara ◽  
V. Solís-Weiss
Keyword(s):  
New Species ◽  
Continental Shelf ◽  
Gulf Of California ◽  
Mexican Pacific ◽  
Taxonomic Key ◽  
The Family ◽  
Two New Species

The aim of this study is to analyse the Nephtyidae from the Gulf of California. Previous studies about the family Nephtyidae from the continental shelf of the Gulf include 21 species of which seven have been synonymized by several authors, so that at present only 14 species are recognized. In this study, 1763 specimens of Nephtyidae from the continental shelf of the Gulf of California were examined. Eight species were identified, from which Aglaophamus longicirrata sp. nov. and Aglaophamus foliosa sp. nov. are newly described. Aglaophamus longicirrata sp. nov. is characterized by the presence of very long dorsal cirri in median parapodia and by having 16 rows of subterminal papillae with 3–7 papillae per row, and a pair of middorsal papillae on the proboscis. Aglaophamus foliosa sp. nov. is characterized by foliaceous long dorsal cirri; the proboscis bears 16 rows of subterminal papillae and an irregular number of papillae per row, from 5 to 15. A taxonomic key is presented for the species of Nephtyidae recorded from the continental shelf of the Gulf of California, including the two new species of Aglaophamus.

New species of the gutless marine genus Inanidrilus (Oligochaeta, Tubificidae) from the Gulf of Mexico and Barbados

1982 ◽  
Vol 60 (12) ◽  
pp. 3063-3067 ◽  
Author(s):  
Christer Erséus ◽  
H. R. Baker
Keyword(s):  
New Species ◽  
Coral Reefs ◽  
Gulf Of Mexico ◽  
West Indies ◽  
Two New Species ◽  
Definition Of

The definition of Inanidrilus Erséus, 1979 (subfamily Phallodrilinae) is emended to include Inanidrilus mexicanus sp. nov. from the eastern part of the Gulf of Mexico, and Inanidrilus falcifer sp. nov. from coral reefs at Barbados, West Indies. The two new species differ from I. bulbosus Érséus, 1979 by their possession of paired spermathecae and from each other in the morphology of their spermathecae, atria, and penial setae.

Two new species of Elacatinus (Teleostei: Gobiidae) from the Mexican coast of the Gulf of Mexico

Zootaxa ◽  
2007 ◽  
Vol 1425 (1) ◽  
pp. 45-51 ◽  
Author(s):  
MICHAEL S. TAYLOR ◽  
LAD AKINS
Keyword(s):  
New Species ◽  
Coral Reefs ◽  
Gulf Of Mexico ◽  
Water Column ◽  
Caudal Fin ◽  
Marine Park ◽  
Two New Species ◽  
Reddish Orange

Two new species of gobies (Teleostei: Gobiidae) were recently discovered off the coast of Veracruz, Mexico in the southwestern Gulf of Mexico. Elacatinus jarocho sp. nov. can be diagnosed from other species in the genus by the disjunct yellow lateral stripe restricted to the head and caudal fin base, the yellow medial stripe on the snout, and the black ovoid to rectangular spot at the base of the caudal fin, immediately ventral to the yellow dash. This species forms shoals in the water column close to rock and coral reefs, feeding presumably on zooplankton, a trait shared by only one other species in the genus. Elacatinus redimiculus sp. nov. can be diagnosed from other species in the genus by the distinct reddish orange blotches or broken bands on the head and 13 reddish orange to dark brown stripes between the pectoral and caudal fins. Both species are currently known only from the southwestern Gulf of Mexico from reefs within the Veracruz Marine Park off the coast of Veracruz, Mexico.

scholarly journals Contribution to the knowledge of the oribatid mite genus Pilobatella (Acari, Oribatida, Haplozetidae)

Acarologia ◽  
2020 ◽  
Vol 60 (3) ◽  
pp. 545-556
Author(s):  
Sergey G. Ermilov ◽  
Josef Starý
Keyword(s):  
New Species ◽  
National Park ◽  
Oribatid Mite ◽  
Generic Diagnosis ◽  
Region Versus ◽  
Medium Length ◽  
Anogenital Region ◽  
Two New Species ◽  
Forest Leaf Litter ◽  
Mite Genus

The genus Pilobatella (Oribatida, Haplozetidae) comprises 10 species, which are distributed in the Palaeotropical region; this includes two new species described herein on the basis of adult specimens sampled from forest leaf litter in Andasibe-Mantadia National Park of eastern Madagascar. Pilobatella mikoi n. sp. is similar to Pilobatella baloghi Mahunka, 2003 in having long interlamellar setae and adanal setae ad1 and ad2, but differs by having monodactylous legs (versus tridactylous) and a bothridial seta that is gradually expanded to a narrow head (versus setiform, without head). Pilobatella kovaci n. sp. is similar to P. mikoi n. sp. in having monodactylous legs, long interlamellar setae and adanal setae ad1 and ad2, but differs by the presence of lineolate notogaster and anogenital region (versus lineolate markings absent), long tutoria (versus tutoria of medium length), rounded trochanters distodorsally (versus pointed) and clearly distanced medial ends of apodemes 2 (versus nearly touching at midline). A revised generic diagnosis and an identification key to known species of Pilobatella are presented.

An update on the diversity of marine sponges in the southern gulf of Mexico coral reefs

Zootaxa ◽  
2021 ◽  
Vol 5031 (1) ◽  
pp. 1-112
Author(s):  
DIANA UGALDE ◽  
JULIO C.C. FERNANDEZ ◽  
PATRICIA GÓMEZ ◽  
GISELE LÔBO-HAJDU ◽  
NUNO SIMÕES
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Gulf Of Mexico ◽  
New Records ◽  
Marine Sponges ◽  
Sponge Species ◽  
Southern Gulf Of Mexico

Until now, 127 species of marine sponges have been recorded in the southern Gulf of Mexico (SGoM). In this study, we describe the sponge fauna recorded on 16 coral reefs of the SGoM, defined as the Mexican waters of the Gulf of Mexico (GoM), during a period from 2005 to 2019. We report 80 sponge species, including 34 first geographic records for the southern GoM region. The latter are fully described and illustrated, taking into account 24 that represent new records for the GoM: Agelas conifera, Agelas sventres, Agelas wiedenmayeri, Prosuberites carriebowensis, Desmanthus meandroides, Cliona aprica, Cliona dioryssa, Placospongia ruetzleri, Haliclona (Gellius) megasclera, Haliclona (Reniera) aff. portroyalensis, Neopetrosia proxima, Xestospongia arenosa, Calyx podatypa, Shiphonodictyon xamaycaense, Acarnus innominatus, Iotrochota arenosa, Polymastia tenax, Svenzea cristinae, Svenzea flava, Svenzea tubulosa, Svenzea zeai, Timea stenosclera, Stellettinopsis megastylifera, Suberea flavolivescens. The present work highlights the understimated and remarkable diversity of reef-associated sponges within the Campeche Bank Coral reef systems. Present work data was compiled with existing published information to produce an updated list of 161 known sponges in the southern GoM.  

A review of the genus Cryptotendipes Lenz  (Diptera: Chironomidae) from China

Zootaxa ◽  
2005 ◽  
Vol 1086 (1) ◽  
pp. 1 ◽  
Author(s):  
CHUN CAI YAN ◽  
HONG QU TANG ◽  
XIN HUA WANG
Keyword(s):  
New Species ◽  
New Record ◽  
New Combination ◽  
Generic Diagnosis ◽  
The World ◽  
Two New Species

The genus Cryptotendipes Lenz from China is reviewed. Two new species, C. nodus and C. parallelus, are described and illustrated from males. Cryptotendipes lenzi Zorina is a new record for China. The male of C. casuarius (Townes) from China is redescribed. Unassociated larvae of four unnamed species also are presented. Cryptotendipes sibaabeus Sasa, Sumita & Suzuki is transferred to the genus Cladopelma as a new combination. The generic diagnosis for males and larvae is emended. Keys to known males and larvae in the world are given.

Gammaropsis elvirae sp. nov., a widely distributed amphipod (Amphipoda: Photidae) in the Yucatan Shelf, with ecological comments and a key for the genus in tropical America

Zootaxa ◽  
2019 ◽  
Vol 4555 (3) ◽  
pp. 359 ◽  
Author(s):  
CARLOS E. PAZ-RÍOS ◽  
DANIEL PECH
Keyword(s):  
Spatial Distribution ◽  
New Species ◽  
Environmental Variables ◽  
Posterior Margin ◽  
Soft Sediment ◽  
Lower Lip ◽  
The Family ◽  
Tropical America ◽  
Southern Gulf Of Mexico ◽  
A New Species

Gammaropsis elvirae sp. nov. is described and illustrated here, as a new species of the family Photidae Boeck, 1871, occurring on sites widely distributed in the soft-sediment habitats from the Yucatan shelf, southern Gulf of Mexico. This new species differs from all other congeners by a unique set of characteristics: lateral cephalic lobes rounded; outer lobes of lower lip with one cone on each lobe; gnathopod 1 propodus longer than carpus; gnathopod 2 propodus enlarged with small convoluted processes on posterior margin and palmar angle undefined; gnathopod 2 dactylus short, less than one half in length of propodus; dense setation on basis, carpus, and propodus of gnathopod 2; epimeral plates 1–3 rounded; inner ramus of uropods 1–3 longer than outer ramus; and telson emarginated. Ecological comments on spatial distribution and associated environmental variables are included, as well an identification key to the genus in tropical America. 

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