BookPDF Available

El acuario marino costero chileno. Fundación Reino Animal. Arica, Chile. 1-178 pp.

Authors:
  • Fundación Reino Animal
A preview of the PDF is not available
... Méndez-Abarca et. al., 2013& 2015. Para más detalles revisar: Fish species involved in mass washed up eggs in Chinchorro beach, Arica -Chile during the period of one year. ...
... Additionally, Fuentes (1981) recorded this species at the northern city of Iquique, and Ruiz and Villalba (1984) recorded a single specimen near Cocholgüe, Concepción (36.5875°S, 072.9833°W), which is the southernmost known record of the species. The presence of this species at Cocholgüe is probably due to the El Niño event during the years 1982-1983(Méndez-Abarca 2011, 2015. The fifth record of G. peruvianus on the Chilean coast was by Méndez-Abarca (2011), who reported it from Taltal Beach, Antofagasta, where a female specimen containing well-developed eggs was collected; this confirmed the presence of reproductive individuals in this region. ...
Article
Full-text available
We report the observation of two juvenile specimens of Sashed Catfish, Galeichthys peruvianus Lütken, 1874, south of Arica, Chile, which expands the current known distributional range of the species, by adding a previously unrecorded locality. The importance of the presence of breeding populations in the northern coast of Chile is discussed.
Article
Full-text available
The Desventuradas Islands (San Félix and San Ambrosio) and Juan Fernández Archipelago (Robinson Crusoe and Alejandro Selkirk) are oceanic islands of volcanic origin located in the southeastern Pacific off Chile. Based on new material collected since 1997, revision of the R/V Anton Bruun expeditions collections, and a taxonomic update, the coastal fish fauna of Juan Fernández Archipelago and Desventuradas Islands found a total of 52 species, with 41 and 43 species, respectively. The number of coastal fish species recorded herein as endemic for Juan Fernández is only five (12,2%) and three species are new records (Gymnothorax cf. obesus, Gnathophis sp., Suezichthys sp). The Desventuradas Islands have only two endemic species (4,6%) and four species are new records (Scorpaenodes englerti, Maxillicosta reticulata, Suezichthys sp., Aseraggodes bahamondei). The reduced number of endemic species for the Juan Fernández Islands as compared with previous accounts (15 species) is the result that more species were found to be endemic to both islands groups (22 species = 42,3% all coastal fishes), suggesting these two island groups should be considered a single biogeographic unit. The eastern extension of the Indo West Pacific Region to include the Nazca Ridge, Desventuradas and Juan Fernández Islands is supported herein. The zoogeographical affinities between Desventuradas and western Pacific Islands (Easter Island to Australia), includes 16 species, adding five new species to previous lists. Relationships of three genera indicate a Western Pacific origin with one or more dispersal events to the Desventuradas and Juan Fernández Islands. Another seven genera, with relatively few species and restricted distribution, may have this same pattern. Only one phylogenetic study indicates a continental origin with a westward dispersal (Odontesthes), however another three genera may have this same pattern of dispersal.
Article
Full-text available
Se menciona el hallazgo de una hembra de Galeichthys peruvianus Lütken, 1874 con trece huevos en su interior en Taltal, Provincia de Antofagasta, Chile.
Article
Full-text available
The aim of this study was to report the colouration patterns of live specimens of two Blenniidae species: Scartichthys gigas and S. viridis, from tide pools in the coastal area of 3 localities of northern Chile. Colouration patterns for S. gigas were: the two-bar front head covered/uncovered and the uniform orange-brown, found in specimens associated to kelps, for juveniles; an intermediate juvenile-adult reticulated bar-stained pattern described for the first time and the reticulated pattern for adults. For S. viridis the dark-light green pattern is described for juveniles and adults. The findings are discussed in terms of colouration patterns previously described for both species, with emphasis on the importance of using colouration patterns to improve species identification, reduce habitat disturbance and specimen removal from the wild.
Article
Full-text available
This study analyzed the diet and parasites of an insular blenniid fish, Scartichthys variolatus, and then compared that with data published for two congeneric species from the South American Pacific coast, S. viridis and S. gigas. Fifty-two specimens of fish were collected during 2008 and 2009 from the intertidal zone of the Robinson Crusoe Island, about 700 km off the coast of central Chile. The most frequent food items in all the fish analyzed were algae. Just two specimens of S. variolatus (3.8%) were parasitized only by the nematode Pseudodelphis chilensis. Despite the fact that all Scartichthys spp. are herbivorous, and the diet was composed of similar species, there were differences in frequencies of some of the algae, maily in Chaetomorpha sp. and Polysiphonia sp. The low parasite species richness of S. variolatus contrasts with that of the continental congeneric species, S. viridis with 13 parasite species, and S. gigas with 13 species. Therefore, the diet of these fishes can not explain differences in their parasite composition, so it is possible that environmental conditions, and the distance between the location of Robinson Crusoe Island and the South American coast, had limited dispersal and distribution of hosts and parasites over time.
Article
Full-text available
The infracommunities of metazoan parasites in two congeneric and sympatric marine fish species, Scartichthys viridis (Valenciennes 1836) and Scartichthys gigas (Steindachner 1876), were studied and compared between three localities of the intertidal rocky shore off the coast of northern Chile, near Iquique (20°32' S, 70°11' W), which were separated by no more than 6 km. Samples were collected between August and September 2005. The goal of this study was to assess the variability in richness, abundance, diversity, dominance and parasite composition between close localities sampled within a short period. In all, 2,110 parasite individuals were collected from the 134 hosts examined, and 14 parasite taxa were identified. There was great similarity in the aggregated and compositional properties of the infracommunities, both between host species, as well as among study sites. We interpret these results as indicating that ecological factors such as habitat use and dietary composition, and evolutionary factors, such as the close relatedness between Scartichthys species are the main causes influencing the high similarity found in parasite communities of these fish species.
Article
Full-text available
The ecological importance of fish herbivory was examined in a temperate rocky intertidal zone along the central Chilean coast. In this system, the blenny Scartichthys viridis is the most abundant and only herbivorous fish. We describe its diet, determine its field food selectivity (gut contents vs macroalgal field availability comparison), and report on its laboratory dietary preferences in a multiple-choice feeding experiment. Finally, we evaluate the relative effects of fish herbivory and grazing invertebrates on macroalgal abundance, distribution and diversity patterns in the field, using replicated exclusion cages to manipulate grazing intensity. S. viridis was found to be a selective grazer; its diet was dominated by 2 macroalgae: the green Ulva and the red Gelidium, representing 32.6 and 41.4% of its total gut content biomass, respectively. Ulva was consumed much above its field availability while Gelidium was selected only during fall-winter. In the laboratory, S. viridis selected the green macroalgae Ulva rigida and Codium dimorphum and avoided Gelidium chilense. We suggest that Gelidium may be included in its diet due to the limited availability of Ulva in the field. Experimental exclusion of this fish from rocky surfaces resulted in increased abundance of green foliose macroalgae (U. rigida and Enteromorpha linza), and, to a much lesser extent, of the red foliose macroalgae G. chilense, Porphyra columbina, and Mazzaella laminarioides, and of the brown macroalgae Colpomenia phaeodactyla and Petalonia fascia, as well as an extension of the distribution of P. columbina from the high intertidal to the mid intertidal zone, where it normally does not occur. Exclusion of grazing invertebrates resulted in a decrease in foliose macroalgal species richness, but had no effect on biomass. To our knowledge, this is the first experimental demonstration of the effect of an herbivorous fish on macroalgal community structure in a temperate rocky intertidal area. The selective feeding displayed by S, viridis, its high numerical abundance, and the results of the herbivore exclusion experiment suggest its importance in maintaining the low abundance of foliose macroalgae and the high relative cover of brown and red crustose macroalgae, characteristic of many low to mid rocky intertidal areas along the coast of central Chile.
Article
Full-text available
The Desventuradas Islands (San Felix and San Ambrosio) and Juan Fernandez Archipelago (Robinson Crusoe and Alejandro Selkirk) are oceanic islands of volcanic origin located in the southeastern Pacific off Chile. Based on new material collected since 1997, revision of the R/V Anton Bruun expeditions collections, and a taxonomic update, the coastal fish fauna of Juan Fernandez Archipelago and Desventuradas Islands found a total of 52 species, with 41 and 43 species, respectively. The number of coastal fish species recorded herein as endemic for Juan Fernandez is only five (12,2%) and three species are new records (Gymnothorax cf. obesus, Gnathophis sp., Suezichthys sp). The Desventuradas Islands have only two endemic species (4,6%) and four species are new records (Scorpaenodes englerti, Maxillicosta reticulata, Suezichthys sp., Aseraggodes bahamondei). The reduced number of endemic species for the Juan Fernandez Islands as compared with previous accounts (15 species) is the result that more species were found to be endemic to both islands groups (22 species = 42,3% all coastal fishes), suggesting these two island groups should be considered a single biogeographic unit. The eastern extension of the Indo West Pacific Region to include the Nazca Ridge, Desventuradas and Juan Fernandez Islands is supported herein. The zoogeographical affinities between Desventuradas and western Pacific Islands (Easter Island to Australia), includes 16 species, adding five new species to previous lists. Relationships of three genera indicate a Western Pacific origin with one or more dispersal events to the Desventuradas and Juan Fernandez Islands. Another seven genera, with relatively few species and restricted distribution, may have this same pattern. Only one phylogenetic study indicates a continental origin with a westward dispersal (Odontesthes), however another three genera may have this same pattern of dispersal.
Article
In Chile, the genus Aplodactylus included five nonimal species. Recent studies have shown the presence of Aplodactylus punctatus (jerguilla) only. However, there are at least three cromatic variation of this species, green (most abundant), yellowish and whitish (less abundant). A morphometric and meristics study on specimens of A. punctatus, including the color variation from central and northern Chile shoreline was conducted using univariates statistics (t-student) and Principal Component Analysis. No significant differences were found between morpho-metrics, meristic and coloration within the studied area.