scholarly journals DESMODORIDAE (NEMATODA) MIT EXTREM LANGEN SPICULA AUS SUDAMÉRICA

2016 ◽  
Vol 8 ◽  
Author(s):  
Sievert Lorenzen
Keyword(s):  
Pacific Coast ◽  
Atlantic Coast ◽  
Marine Nematodes ◽  
Southern Chile ◽  
Bundesrepublik Deutschland ◽  
The Pacific ◽  
The Family ◽  
De Man

1. It is discussed that in five from the six orders of freeliving marine nematodes there are species with extraordinary long spicula. These species live in mud, sand and between algae. Extraordinary long spicula are slender, have with very few exceptions the form of an elongated comma and are accompanied by a 1) Die Arbeit wurde gefordert durch Exkursionsbeihilfen von „ORPLANLos Canales" (Chile) zur Küste Patagoniens und durch eine Reisebeihilfe der Deutschen Forschungsgemeinschaft (Bundesrepublik Deutschland) nach Kolumbien. In Kolumbien konnte ich am Instituto Colombo-Alemán in Santa Marta arbeiten. Allen drei Institutionen sei herzlich gedankt. slender gubernaculum without apophysis. In the respectives females the sexual organs are built normally as in other species in which the males possess normal spicula (1 exception). 2. 4 species belonging to the family Desmodoridae are described: Microlaimus acicularis n. sp., Molgolaimus tenuispiculum Ditlevsen 1921 (both to Microlaiminae), Desmodora (Desmodora) filispiculum n. sp. and D.(D.) sinuata n. sp. (both to Desmodorinae). The three first mentioned species are collected from the Pacific coast of Southern Chile, the last mentioned one from the Atlantic coast of Colombia.3. The spicula of Molgolaimus tenuispiculum and Desmodora sinuata are not only very elongated but furthermore of a very outstanding form.4. Within the genus Desmodora de Man 1889 the subgenus Desmodorella Cobb 1933 is supposed to be synonym to the subgenus Desmodora. 5. Similarities which exist between Desmodora, the epsilonematids and draconematids are discussed.

scholarly journals Two new species of Microcotyle (Monogenea: Microcotylidae) on intertidal fish from the south Pacific coast

2020 ◽  
Vol 54 (3) ◽  
pp. 283
Author(s):  
Gabriela Muñoz ◽  
Mario George-Nascimento
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Valid Species ◽  
Base Pairs ◽  
Central Chile ◽  
South Central ◽  
The Pacific ◽  
The Family ◽  
Two New Species ◽  
Intertidal Fish

Microcotyle is one of the most diverse and controversial genera within the family Microcotylidae. To date, 131 species have been described in Microcotyle; however, more than half have been transferred to other genera, and several others have poor descriptions. Therefore, less than half of all Microcotyle species may be considered valid. In Chile, two species have been recognized, and unidentified Microcotyle have been found on several littoral fish, but there has been no effort to properly identify them. In this study, two new species of Microcotyle are taxonomically described from intertidal fish of the central (33°S) and south-central (36°S) regions of Chile. In this study, Microcotyle sprostonae n. sp. (collected mainly from Scartichthys viridis in central Chile) and M. chilensis n. sp. (collected mainly from Calliclinus geniguttatus in south-central Chile) were identified based on morphological and molecular analyses (ITS2 and 18S genes). Both species of Microcotyle principally differed from one another and from other valid species in the number of testes and clamps. The two new species also differed from one another by one base pair in the ITS2 and 18S genes and differed from other species of Microcotyle by several base pairs of both genes. Intertidal fish are mostly endemic to the Pacific coast of South America, and they have a limited geographical distribution that does not overlap with the type hosts of other Microcotyle species. Therefore, the two new species described here are distinguished from other congeneric species by morphological, genetic, and biological characteristics.

TWO NEW MEXICAN ISOTOGASTRURA (COLLEMBOLA: ISOTOGASTRURIDAE)

1998 ◽  
Vol 130 (2) ◽  
pp. 195-199 ◽  
Author(s):  
José G. Palacios-Vargas ◽  
Jean-Marc Thibaud
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Atlantic Coast ◽  
New Mexican ◽  
The Pacific ◽  
Two New Species

AbstractTwo new species of Isotogastrura, one from the Pacific coast and one from the Atlantic coast, are described: Isotogastrura ahuizotli sp.nov. and Isotogastrura veracruzana sp.nov. A key for the five species known at present is included.

Taxonomy of Centropomus Lacépède, 1802 (Perciformes: Centropomidae), with focus on the Atlantic species of the genus

Zootaxa ◽  
2021 ◽  
Vol 4942 (3) ◽  
pp. 301-338
Author(s):  
JESSÉ MIRANDA DE FIGUEIREDO-FILHO ◽  
ALEXANDRE P. MARCENIUK ◽  
ANDERSON FEIJÓ ◽  
RAQUEL SICCHA-RAMIREZ ◽  
GIOVANA S. RIBEIRO ◽  
...  
Keyword(s):  
Geometric Morphometrics ◽  
Pacific Coast ◽  
Atlantic Coast ◽  
Lateral View ◽  
Cytochrome C Oxidase I ◽  
Linear Measurements ◽  
Molecular Analyses ◽  
Needed Information ◽  
The Pacific ◽  
Pacific Species

Centropomus Lacépède, 1802 comprises 13 species of the fishes popularly knows as snooks, distributed in both Atlantic and Pacific coasts of America. Despite several studies on the group, conflicting taxonomic classifications still exist, including overlapping diagnostic characters, rendering species diagnoses extremely difficult. Herein, we review the taxonomy of Centropomus to elucidate species identities, redefine their diagnoses and to assess interspecific relationships based on the examination of 376 specimens. The study included complementary approaches, as analyses of external morphologic characters, linear and geometric morphometrics, and molecular analyses. Forty-nine characters were used for external morphology, 17 discrete plus 32 linear measurements. Shape and size were analyzed through geometric morphometrics of 185 specimens in lateral view. Partial sequences of the gene cytochrome c oxidase I were obtained for 129 specimens representing 11 species. Based on the consistent results retrieved from the morphologic and molecular analyses, we recognized six species of Centropomus from the Atlantic coast (C. ensiferus, C. irae, C. parallelus, C. pectinatus, C. poeyi and C. undecimalis). Centropomus mexicanus is treated as a junior synonym of C. parallelus. Six species from the Pacific coast are also tentatively recognized (C. armatus, C. medius, C. nigrescens, C. robalito, C. unionensis, and C. viridis), however further studies on the Pacific species are still needed. Information on type material, diagnosis, distribution, and taxonomic comments are provided for each species. An identification key to the species of Centropomus is presented. 

Cimaria vargasi n. gen, n. sp. (Gastropoda: Pyramidellidae: Odostomiinae) from the Pacific Coast of Costa Rica, Central America

Zootaxa ◽  
2012 ◽  
Vol 3178 (1) ◽  
pp. 63
Author(s):  
TORE HØISÆTER
Keyword(s):  
Costa Rica ◽  
Central America ◽  
Pacific Coast ◽  
Biogeographic Province ◽  
The Pacific ◽  
The Family

The Panamic biogeographic province has long been thought to harbour a rich pyramidellid fauna. In the compilation of Keen (1971) the family is second only to the Turridae in being the most speciose gastropod family in the region, and no less than 350 species are listed. However a number of these have later been recognized to be synonyms, and in the update of the compilation by Skoglund (2002) the number of pyramidellids was reduced to 258.

Two new species of free-living marine nematodes of the family Oxystominidae Chitwood, 1935 (Enoplida) with a review of the genus Thalassoalaimus de Man, 1893 from the Argentine coast 

Zootaxa ◽  
2017 ◽  
Vol 4250 (4) ◽  
pp. 347
Author(s):  
ANTONELA MARTELLI ◽  
VIRGINIA LO RUSSO ◽  
GABRIELA VILLARES ◽  
CATALINA T. PASTOR DE WARD
Keyword(s):  
New Species ◽  
San Antonio ◽  
Marine Nematodes ◽  
San Jose ◽  
Key To Species ◽  
Free Living ◽  
Rio Negro ◽  
The Family ◽  
Two New Species ◽  
De Man

Two new free-living marine nematodes of the family Oxystominidae are described from San Antonio Bay (Río Negro) and San José Gulf (Chubut). Litinium australis sp. n., is characterized by having a rounded tail, by the first and second crown of cephalic setae with different lengths, gubernaculum with apophysis and by the presence of at least four precloacal papillae; Thalassoalaimus nestori sp. n., is characterized by having a conical tail, cephalic setae equal in length, gubernaculum with rounded and dorso-caudally directed apophysis and two precloacal papillae. An emended diagnosis of the genus Thalassoalaimus and a key to species are given. 

Peniculus asinus (Copepoda: Pennellidae), a new species of copepod parasitic on fishes of the genus Sebastes along the west coast of North America

1977 ◽  
Vol 55 (12) ◽  
pp. 1988-1991 ◽  
Author(s):  
Z. Kabata ◽  
S. N. Wilkes
Keyword(s):  
New Species ◽  
North America ◽  
West Coast ◽  
Pacific Coast ◽  
The West ◽  
Unique Member ◽  
The Pacific ◽  
The Family ◽  
A New Species

Peniculus asinus, a new species of copepod parasitic on Sebastes (Pisces: Teleostei) off the Pacific coast of Canada is described and illustrated. The copepod is an unique member of its genus in that it possesses cephalothoracic holdfast processes. The discovery of a Peniculus with these processes is taken as evidence confirming the place of this genus in the family Pennellidae.

On two new species of Halopteris Allman, 1877 (Cnidaria: Hydrozoa) from Chile

Zootaxa ◽  
2006 ◽  
Vol 1165 (1) ◽  
pp. 57 ◽  
Author(s):  
HORIA R. GALEA
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Morphological Features ◽  
Southern Chile ◽  
The Pacific ◽  
Two New Species

Two new species of hydroids, Halopteris enersis sp.nov. and Halopteris schucherti sp.nov., from the Pacific coast of southern Chile are described and figured. Measurements and nematocyst data are provided for each species. Their morphological features are compared with those of other members of the genus, and comparative tables listing their peculiarities are presented.

The Taxonomy and Morphometry of Squids in the Family Loliginidae (Cephalopoda:Myopsida) from the Pacific Coast of Mexico

2014 ◽  
Vol 32 (2) ◽  
pp. 198-208 ◽  
Author(s):  
Jasmin Granados-Amores ◽  
Francisco J. García-Rodríguez ◽  
F. G. Hochberg ◽  
César A. Salinas-Zavala
Keyword(s):  
Pacific Coast ◽  
The Pacific ◽  
The Family

First record of the sea anemone Nematostella vectensis (Actiniaria: Edwardsiidae) in Southern Hemisphere waters

Zootaxa ◽  
2010 ◽  
Vol 2343 (1) ◽  
pp. 66 ◽  
Author(s):  
JANINE F. SILVA ◽  
CARLOS A. C. LIMA ◽  
CARLOS D. PEREZ ◽  
PAULA B. GOMES
Keyword(s):  
Southern Hemisphere ◽  
Pacific Coast ◽  
Atlantic Coast ◽  
First Record ◽  
The United States ◽  
Sea Anemone ◽  
Nematostella Vectensis ◽  
Brazilian Coast ◽  
The Pacific ◽  
The Usa

This is the first record of the starlet sea anemone, Nematostella vectensis Stephenson, 1935, in Southern Hemisphere waters. Specimens of N. vectensis were collected in the surroundings of the Port of Recife, Pernambuco, Brazil. The species is native to the Atlantic coast of the United States of America; populations along the Pacific coast of the USA and the coasts of England are the result of anthropogenic introduction, probably associated with ships and boats used in oyster commerce (Sheader et al. 1997; Pearson et al. 2002; Reitzel et al. 2008). The present study extends the latitudinal distribution of this species, and we discuss the presence on the Brazilian coast of this exotic species.

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