Cephalopod paralarval assemblages in the Gulf of California during 2004-2007

Silva-Dávila, Roxana De; Franco-Gordo, Carmen; Hochberg, FG; Godínez-Domínguez, Enrique; Avendaño-Ibarra, Raymundo; Gómez‐Gutiérrez, Jaime; Robinson, C.M.

doi:10.3354/meps11074

Cited by 19 publications

(26 citation statements)

References 44 publications

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“…Only three paralarvae of the family Chiroteuthidae (Chiroteuthis sp. 1, 1.0-1.1 mm ML), have previously been collected off the west coast of the Baja California peninsula and in the Gulf of California after 15 oceanographic cruises in which zooplanktonic cephalopod paralarvae were analyzed (GranadosAmores et al, 2010;De Silva-Dávila et al, 2015). Of these cruises, only two had trajectories from La Paz Bay to Banderas Bay, but they did not systematically cover the south and entrance zone of the Gulf of California as the analyzed cruise did.…”

Section: Discussionmentioning

confidence: 99%

First record and description of Planctoteuthis (Cephalopoda: Chiroteuthidae) paralarvae in the Gulf of California, Mexico

Silva-Dávila

Avendaño-Ibarra

Young

et al. 2018

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ABSTRACT. We report for the first time the presence of doratopsis stages of Planctoteuthis sp. 1 (Cephalopoda: Chiroteuthidae) in the Gulf of California, Mexico, including a description of the morphological characters obtained from three of the five best-preserved specimens. The specimens were obtained from zooplankton samples collected in oblique Bongo net tows during June 2014 in the southern Gulf of California, Mexico. Chromatophore patterns on the head, chambered brachial pillar, and buccal mass, plus the presence of a structure, possibly a photophore, at the base of the eyes covered by thick, golden reflective tissue are different from those of the doratopsis stages of Planctoteuthis danae and Planctoteuthis lippula known from the Pacific Ocean. These differences suggest Planctoteuthis sp. 1 belongs to Planctoteuthis oligobessa, the only other species known from the Pacific Ocean or an unknown species. Systematic sampling covering a poorly sampled entrance zone of the Gulf of California was important in the collection of the specimens.

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Section: Discussionmentioning

confidence: 99%

First record and description of Planctoteuthis (Cephalopoda: Chiroteuthidae) paralarvae in the Gulf of California, Mexico

Silva-Dávila

Avendaño-Ibarra

Young

et al. 2018

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“…Desde Ensenada, Baja California, hasta punta Abreojos, Baja California Sur, la estructura de la comunidad de paralarvas durante El Niño/ Oscilación del Sur (ENOS) en 1997-2001 estuvo modulada por las variables físicas asociadas al avance y retroceso latitudinal de las masas de agua, lo que promovió un cambio significativo en los índices comunitarios y en la dominancia de especies cuyas afinidades biogeográficas se relacionaron con el calentamiento o el enfriamiento anómalos registrados (Durazo y Baumgartner 2002, Granados-Amores et al 2010. En el golfo de California, durante 2004de California, durante -2007, sin influencia significativa de ENOS, 3 asociaciones recurrentes de paralarvas se acoplaron a las masas de agua superficiales, lo que evidencia el transporte de especies tropicales al interior del golfo y el enriquecimiento de la comunidad residente (De Silva-Dávila et al 2015). Por otro lado, en el golfo de Tehuantepec, la distribución de tallas y las comunidades oceánica y costera de paralarvas estuvieron influenciadas por 2 remolinos y un frente de surgencia, así como por la hidrodinámica sobre la plataforma continental (Aceves-Medina et al 2017).…”

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“…Sin embargo, el uso de diferentes tipos de arrastre influye en la estructura de las comunidades del zooplancton recolectadas, y las de cefalópodos no son la excepción (Saito 1994, Staaf et al 2013). El uso de diferentes artes de muestreo en forma complementaria resulta en una mejor base de datos para el análisis de las comunidades de paralarvas de cefalópodos (De Silva-Dávila et al 2015).…”

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“…The paralarval community structure from Ensenada, Baja California, to Point Abreojos, Baja California Sur, during the 1997-2001 El Niño/Southern Oscillation (ENSO) event was modulated by physical variables associated with the latitudinal extension and retrieval of water masses, which prompted a significant change in community indexes and in the dominance of species whose biogeographic affinities were associated with anomalous warming or cooling events (Durazo and Baumgartner 2002, Granados-Amores et al 2010). During 2004-2007, when ENSO influence was not significant in the Gulf of California, 3 paralarval assemblages were recurrently found in surface water masses, indicating that tropical species were transported into the gulf and enriched the resident community (De Silva-Dávila et al 2015). On the other hand, size distribution and oceanic and coastal paralarval communities in the Gulf of Tehuantepec were influenced by 2 eddies, an upwelling front, and the hydrodynamics over the continental shelf (Aceves-Medina et al 2017).…”

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confidence: 99%

“…However, the use of different net towing methods can affect the structure of collected zooplankton communities, and cephalopod communities are not an exception (Saito 1994, Staaf et al 2013. The use of different complementary sampling gears can provide a stronger database for the analysis of cephalopod paralarval communities (De Silva-Dávila et al 2015).…”

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Seasonal changes in paralarval cephalopod communities on the southwest coast of Baja California Sur (spring and autumn 2003)

2018

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A. We recorded seasonal changes in the paralarval cephalopod communities collected off the southwestern coast of Baja California Sur, Mexico, during 2003. Simultaneous surface and oblique trawls were carried out with CalCOFI-type nets and CTD casts during spring and autumn 2003 on board the R/V Río Suchiate (Secretaría de Marina), at 85 sampling stations (Magdalena Bay to Cape San Lucas). The paralarval cephalopod community predominantly showed tropical affinity in both seasons. During autumn, 11 tropical taxa, 2 cosmopolitan taxa, and one temperate taxon were incorporated to the paralarval community recorded previously in spring and were associated with the decrease in Subarctic Water and the entrance of warm water masses to the study region, modifying the community indexes between seasons. The canonical correspondence analysis showed 2 groups significantly correlated with chlorophyll a concentrations and zooplankton volumes. Oblique tows provide better information on the paralarval cephalopod community, while surface tows can be an efficient method for monitoring and evaluating the hatching areas of the jumbo Pacific squid Dosidicus gigas through their paralarvae, which are included in the Sthenoteuthis oualaniensis-Dosidicus gigas complex (SD complex).Key words: paralarvae, community structure, SD complex, Baja California Sur. R .Se registró el cambio estacional en las comunidades de paralarvas de cefalópodos recolectadas frente a la costa suroccidental de Baja California Sur, México, durante 2003. Para lo anterior, se realizaron arrastres superficiales y oblicuos simultáneos con redes tipo CalCOFI y lances de CTD en 85 estaciones de muestreo (de bahía Magdalena a cabo San Lucas) durante primavera y otoño de 2003 a bordo del B/I Río Suchiate (Secretaría de Marina). La comunidad de paralarvas de cefalópodos fue mayormente tropical en ambas temporadas. Durante el otoño se adicionaron 11 taxones tropicales, 2 cosmopolitas y 1 templado a la comunidad registrada previamente en primavera, todos relacionados con la disminución de Agua Subártica y el ingreso de masas de agua cálida a la región; esto modificó los índices comunitarios entre las temporadas. El análisis de correspondencia canónica mostró la formación de 2 grupos correlacionados significativamente con la concentración de clorofila a y el volumen de zooplancton. Los arrastres oblicuos dan mayor información sobre la comunidad de paralarvas, mientras que los superficiales resultan eficientes para el seguimiento y la evaluación de las áreas de eclosión del calamar gigante del Pacífico, Dosidicus gigas, a través de sus paralarvas incluidas en el complejo Sthenoteuthis oualaniensis-Dosidicus gigas (complejo SD).Palabras clave: paralarvas, estructura de la comunidad, complejo SD, Baja California Sur.

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Paralarvae of the complex Sthenoteuthis oualaniensis‐Dosidicus gigas (Cephalopoda: Ommastrephidae) in the northern limit of the shallow oxygen minimum zone of the Eastern Tropical Pacific Ocean (April 2012)

et al. 2016

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The three‐dimensional distribution of the paralarvae of the complex Sthenoteuthis oualaniensis‐Dosidicus gigas (Cephalopoda: Ommastrephidae) was analyzed at the northern limit of the shallow oxygen minimum zone in the Eastern Tropical Pacific in April 2012. The upper limit of the oxygen minimum water (∼44 µmol/kg or 1 mL/L) rises from ∼100 m depth in the entrance of the Gulf of California to ∼20 m depth off Cabo Corrientes. Most of the paralarvae of this complex, dominated by D. gigas, were concentrated in the Gulf entrance, between the thermocline (∼20 to ∼50 m depth) and the sea surface, in the warmest (>19°C) oxygenated (>176 µmol/kg) layer. The highest abundance of paralarvae was detected in an anticyclonic eddy (∼120 km diameter and >500 m deep), which contained lower‐salinity water (<35 g/kg), consistent with formation in the California Current. Lower paralarvae abundance was recorded further south off Cabo Corrientes, where hypoxic layers were elevated as water shoaled nearshore. Almost no paralarvae were found in the north of the study area beyond the strong salinity front (∼34.8–35.4 g/kg) that bounded the anticyclone. These results showed an affinity of the paralarvae for lower‐salinity, oxygenated water, illustrated by the influence of the mesoscale anticyclonic eddy and the salinity front in their distribution. Based on this study, it can be concluded that the expansion of the depth range of hypoxic water observed in the Eastern Tropical Pacific may be increasing environmental stress on the paralarvae by vertically restricting their habitat, and so affecting their survival.

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Cephalopod paralarval assemblages in the Gulf of California during 2004-2007

Cited by 19 publications

References 44 publications

First record and description of Planctoteuthis (Cephalopoda: Chiroteuthidae) paralarvae in the Gulf of California, Mexico

First record and description of Planctoteuthis (Cephalopoda: Chiroteuthidae) paralarvae in the Gulf of California, Mexico

Seasonal changes in paralarval cephalopod communities on the southwest coast of Baja California Sur (spring and autumn 2003)

Paralarvae of the complex Sthenoteuthis oualaniensis‐Dosidicus gigas (Cephalopoda: Ommastrephidae) in the northern limit of the shallow oxygen minimum zone of the Eastern Tropical Pacific Ocean (April 2012)

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