scholarly journals Hermaphroditism of bivalves Anadara tuberculosa and Anadara similis Sowerby 1883 (Arcidae) in Colombian Pacific mangroves

2021 ◽  
Vol 50 (1) ◽  
pp. 163-170
Author(s):  
Carlos Lucero ◽  
Jaime Cantera ◽  
Diego Gil
Keyword(s):  
Sexual Maturation ◽  
Pacific Coast ◽  
Frequency Of Occurrence ◽  
Future Studies ◽  
The Pacific ◽  
Colombian Pacific

The hermaphrodite condition of the cockles Anadara tuberculosa and Anadara similis, gonochoric species living in mangroves of the Pacific coast of Colombia, are described in this paper. The gonads of 290 individuals of A. tuberculosa and 336 individuals of A. similis collected in five localities of the Colombian Pacific coast were analyzed using histological methods. Our results exposed that 3.1 % of A. tuberculosa and 3.0 % of A. similis analyzed showed signs of both ovules and spermatozoids, as well as simultaneous sexual maturation. Based on this frequency of occurrence of hermaphrodite individuals and the fact that hermaphrodite organisms were present in most of the sampling sites, we conclude that hermaphroditism is a normal rather than casual condition of these two species. We suggest that future studies in the hermaphroditism of these organisms center on the determination of factors potentially affecting this condition.

scholarly journals Checklist of benthonic marine invertebrates from Malaga Bay (Isla Palma and Los Negritos), Colombian Pacific

Check List ◽  
2012 ◽  
Vol 8 (4) ◽  
pp. 703 ◽  
Author(s):  
Diego Lozano-Cortés ◽  
Edgardo Londoño-Cruz ◽  
Vanessa Izquierdo ◽  
Fatnori Arias ◽  
Madeleine Barona ◽  
...  
Keyword(s):  
Threatened Species ◽  
Pacific Coast ◽  
Marine Invertebrates ◽  
Ecological Assessment ◽  
Natural Park ◽  
The Pacific ◽  
Rapid Ecological Assessment ◽  
Colombian Pacific

The composition of marine macroinvertebrates in two localities (Isla Palma and Los Negritos) of Malaga Bay was studied. This bay is located in the Pacific coast of Colombia and was recently declared National Natural Park. The rapid ecological assessment revealed a total of 128 species belonging to 64 families and 11 classes (including threatened species). The most common groups were: Gastropoda (27%), Polychaeta (26%), Malacostraca (16%) and Pelecypoda (13%). Even though the two sites are relatively near, being apart only by 6 km, the composition of the respective communities was very different. They shared only 7.8% of the species found; which might have profound and interesting effects for conservation purposes.

scholarly journals EQUINODERMOS DEL PARQUE NACIONAL NATURAL ENSENADA DE UTRIA (PACIFICO COLOMBIANO)

2016 ◽  
Vol 21 ◽  
Author(s):  
Raul Neira O. ◽  
Perla Barba R. ◽  
Roberto Pardo A.
Keyword(s):  
Coral Reef ◽  
National Park ◽  
Pacific Coast ◽  
New Records ◽  
Rocky Shores ◽  
Sandy Shores ◽  
The Pacific ◽  
Shallow Subtidal ◽  
Colombian Pacific

Fifteen species of echinoderms (5 asteroids, 5 echinoids and 5 ophiuroids) are reported for Natural National Park Ensenada deUtria in the Pacific coast of Chocó, Colombia. For each species, we report its size and ecological observations. Two species, Mithrodia bradleyi and Encope ecuadorensis are new records for the Colombian Pacific coast and are described shortly., Most of the echinoderms found were associated to rocky shores, coral reef and sometimes sandy shores, except Ophiothríx spicuiata and Ophiactis savignyi, which were found living in association with the gorgonia Lophogorgia alba. Hesperocidaris asteriscus and Centrostephanus coronatus live in holes in coral or rock. These are mainly intertidal or shallow subtidal species.

Local histories and global theories in Colombian Pacific coast archaeolgy

Antiquity ◽  
1995 ◽  
Vol 69 (263) ◽  
pp. 248-269 ◽  
Author(s):  
David M. Stemper ◽  
Héctor Salgado López
Keyword(s):  
Pacific Coast ◽  
The Pacific ◽  
History Of ◽  
Colombian Pacific

The Pacific Coast of Colombia has a complex history of change and upheaval. How is one to reach to it, with the variety of its human experiences? And how to grasp it from the diverse and often fragmentary sources that are its archaeology?

scholarly journals Determination of the Fish Community Structure of an Intertidal Rocky Zone of the Pacific Coast of Baja California Sur

2022 ◽  
Vol 12 (01) ◽  
pp. 1-18
Author(s):  
Laura E. Cota-Ortega ◽  
Emelio Barjau-Gonzalez ◽  
Juan Manuel López-Vivas ◽  
José Ángel Armenta-Quintana ◽  
Javier Aguilar-Parra ◽  
...  
Keyword(s):  
Community Structure ◽  
Fish Community ◽  
Baja California ◽  
Pacific Coast ◽  
Baja California Sur ◽  
Fish Community Structure ◽  
The Pacific

scholarly journals FIRST RECORD OF THE GENUS TARACTES (PISCES: BRAMIDAE) ON IHE COLOMBIAN PACIFIC

2016 ◽  
Vol 30 ◽  
Author(s):  
Vladimir Puentes ◽  
Efraín A. Rubio ◽  
Luis Alfonso Zapata
Keyword(s):  
Standard Length ◽  
Pacific Coast ◽  
First Record ◽  
San Juan ◽  
The Pacific ◽  
San Juan River ◽  
Colombian Pacific

This paper reports the first record of the genus Taractes on the Pacific coast of Colombia, based on an individual of 43 cm standard length, caught at a depth of 128 m. The sample was taken in the mouth of the San Juan river, with pending line hooks.

Determination of preferred habitats of early benthic juvenile California spiny lobster, Panulirus interruptus, on the Pacific coast of Baja California Sur, Mexico

2005 ◽  
Vol 56 (7) ◽  
pp. 1037 ◽  
Author(s):  
Verónica Castañeda-Fernández de Lara ◽  
Mark Butler ◽  
Sergio Hernández-Vázquez ◽  
Sergio Guzmán del Próo ◽  
Elisa Serviere-Zaragoza
Keyword(s):  
Baja California ◽  
Pacific Coast ◽  
Natural Habitat ◽  
Spiny Lobster ◽  
Substrate Selection ◽  
Panulirus Interruptus ◽  
The Pacific ◽  
Gelidium Robustum ◽  
Selection Of

The habitat requirements of early benthic stage juveniles of California spiny lobster Panulirus interruptus are known only from studies conducted near its northernmost geographic range, where environmental conditions differ markedly from those along the Pacific coast of the southern Baja California Peninsula (Mexico). We determined the natural habitat of this stage of P. interruptus in the central portion of their range from sampling the available dominant vegetated habitats included various seagrasses and macroalgae. Additionally, experiments on habitat selection by early benthic juvenile P. interruptus were performed under laboratory conditions to test natural substrate selection and whether selection of substrata is affected by odour signals. Despite the abundance of different macrophytes as habitat, 93% of the juvenile lobsters were found at the base of the blades of Phyllospadix spp. in the intertidal zone at 0 to 3 m. The highest juvenile densities were found in September at both sites. In laboratory experiments, juvenile lobsters preferred, in order of preference, Gelidium robustum, Phyllospadix, Plocamium pacificum, and holdfasts of the kelp Macrocystis pyrifera. A second laboratory experiment showed that these preferences were affected by odour signals. Results indicate that the ecology of juvenile P. interruptus off the coast of the Mexican Baja is similar to that observed off the coast of southern California.

The Philological Association of The Pacific Coast

PMLA ◽  
1935 ◽  
Vol 50 (4) ◽  
pp. 1373-1374
Keyword(s):  
Annual Meeting ◽  
Pacific Coast ◽  
Stanford University ◽  
The Pacific

The thirty-seventh annual meeting of the Philological Association of the Pacific Coast was held at Stanford University, California, on November 29 and 30, 1935.

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