Presencia de moluscos tropicales de la provincia panameña en la costa central del Perú y su relación con los eventos "El Niño"

Paredes, Carlos; Tarazona, Juán; Canahuire, Elba; Romero, Leonardo; Cornejo, Oswaldo; Cardoso, Franz

doi:10.15381/rpb.v5i2.8330

Cited by 19 publications

(15 citation statements)

References 2 publications

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“…Estudios biogeográficos de la fauna marina que consideran ambas provincias, han sido abordados para moluscos, crustáceos y peces (Olsson, 1961;Chirinos de Vildoso, 1976;Vegas-Vélez, 1980;Méndez, 1981;Vélez & Zeballos, 1985;Bernard et al, 1991;Paredes et al, 1998).…”

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Distribución temporal de moluscos y crustáceos tropicales en la Provincia Peruana y su relación con los eventos El Niño

2004

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RESUMENEn el presente trabajo se analiza la incursión de 25 especies de moluscos y 15 de crustáceos tropicales, registrados entre los años 1972 y 2003, tiempo en el cual ocurrieron cinco eventos El Niño (EN). La presencia de especies tropicales en la Provincia Peruana, se debería al transporte de larvas de especies bentónicas o de juveniles de especies pelágicas, ambas favorecidas por los movimientos de las masas de aguas que caracterizan a los eventos EN. Es posible que algunas especies hayan encontrado «áreas de refugio» donde desarrollarse y permanecer, estas especies presentarían una distribución discontinua en la Provincia Peruana, como es el caso de Malea ringens, Prunum curtum y Bulla punctulata. Otras especies que incursionan cuando se presentan condiciones oceanográficas típicas de un evento EN, aparentemente desaparecen al restablecerse las condiciones «No Niño».Palabras clave: El Niño, ENOS, Perú, moluscos, crustáceos. ABSTRACTThe incursion of 25 tropical species of mollusks and 15 of crustaceans have been analyzed. This species were registered among the years 1972 and 2003, time in which five El Niño events (EN) were occurred. Presence of the tropical species in the Peruvian Province would be related to larvae transport for benthonic species and juvenile for pelagic species, both stimulated by movements of the masses of waters. It is possible that some species have found «refuge areas» where to be developed and to remain, these species would display a discontinuous distribution in the Peruvian Province, like it is the case of Malea ringens, Prunum curtum and Bulla punctulata. Other species that intrude when typical oceanographic conditions of an event appear EN, apparently disappear when recovering the conditions «No Nino».

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Distribución temporal de moluscos y crustáceos tropicales en la Provincia Peruana y su relación con los eventos El Niño

2004

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“…Precisely, it is known that El Niño causes coastal invertebrates’ larval passive displacement. Despite the presence of the northward Humboldt Current, El Niño, by larval advection, is able to temporarily extend southward the distribution range of several mollusk species from the Panamic province, even to the coasts of Chile (Ashton, Riascos, & Pacheco, ; Guzman, Diaz, Ortlieb, & Clarke, ; Paredes, Cardoso, & Tarazona, ; Paredes et al, ; Velez & Zeballos, ). El Niño has the same effect in the vicinity of the California Transition Zone, where it transports larvae in opposite direction to the California Current (Connolly & Roughgarden, ; Glynn, ; Wares et al, ; Zacherl, Gaines, & Lonhart, ).…”

Section: Discussionmentioning

confidence: 99%

Phylogeography of the rocky intertidal periwinkle Echinolittorina paytensis through a biogeographic transition zone in the Southeastern Pacific

Barahona

Vélez‐Zuazo²,

Santa-María

et al. 2019

Marine Ecology

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Barriers to dispersal are recognized to play an important role in the differentiation of populations and ultimately in speciation. In the southeast Pacific, on the northern coast of Peru, a transition zone between the Peruvian and Panamic marine biogeographic provinces exists. Here, the convergence between two contrasting surface currents could generate a barrier effect for the larval dispersal of meroplanktonic invertebrates, which could in turn generate differentiated populations or genetic lineages on both sides of the transition zone. To address this, we studied to Echinolittorina paytensis, an abundant rocky intertidal periwinkle that spans both biogeographic provinces. A total of 95 individuals from Ecuador (2°19′S) to central Peru (7°31′S), covering the Panamic Province, the Peruvian Province, and the transition zone between, were collected. The mitochondrial markers cytochrome c oxidase I and 16SrRNA were sequenced in order to investigate phylogeography and genetic structuring. In general, no genetic structuring was found across the transition zone, suggesting this biogeographic boundary would not be acting as a barrier in this species. Factors such as a high larval dispersal capability and the occurrence of El Niño–Southern Oscillation events such as El Niño are discussed.

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“…However, there are no sharp boundaries between biogeographical provinces and at a finer resolution; adjacent biotas may share a transition zone with considerable overlap (Spalding et al ., ). In addition, the Peruvian ecosystem is subject to high interannual environmental variability caused by the El Niño Southern Oscillation (ENSO), which causes temporary changes in the composition and abundance of biological communities (Paredes et al ., ; Tarazona & Valle, ; Tarazona et al ., ; Paredes, Cardoso & Tarazona, ; Chavez et al ., ).…”

Section: Introductionmentioning

confidence: 98%

Integrative taxonomy of calcareous sponges (subclass Calcinea) from the Peruvian coast: morphology, molecules, and biogeography

et al. 2015

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Understanding of evolution and systematics of Calcarea (Porifera) have not yet met a corresponding increase in the knowledge of diversity and distribution of these sponges in several parts of the world. Peru is an emblematic example of this lack of taxonomic knowledge, as only three shallow-water species of sponges have hitherto been reported from its 3000 km coast. With the aim of studying sponges of Peru, an integrative taxonomy approach (morphology, molecules, and biogeography) was used in order to achieve sound species identifications. The first findings of Peruvian calcareous sponges are presented here. Eight species are described in the subclass Calcinea, of which five are new to science. The retrieved biogeographical patterns are either locally endemic, widespread, or discontinuous over large areas. Clathrina antofagastensis was previously known from Chile, while C. aurea and Ernstia tetractina had been reported from the Atlantic (Brazil), and thus represent the first genetically confirmed tropical amphi-American distributions of species not yet found on both sides of the Isthmus of Panama. Our results reveal a richer Tropical East Pacific sponge fauna than the Warm Temperate South-Eastern Pacific one.

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Presencia de moluscos tropicales de la provincia panameña en la costa central del Perú y su relación con los eventos "El Niño"

Cited by 19 publications

References 2 publications

Distribución temporal de moluscos y crustáceos tropicales en la Provincia Peruana y su relación con los eventos El Niño

Distribución temporal de moluscos y crustáceos tropicales en la Provincia Peruana y su relación con los eventos El Niño

Phylogeography of the rocky intertidal periwinkle Echinolittorina paytensis through a biogeographic transition zone in the Southeastern Pacific

Integrative taxonomy of calcareous sponges (subclass Calcinea) from the Peruvian coast: morphology, molecules, and biogeography

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