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8 resultados encontrados para: AUTOR: Salinas Zavala, César Augusto
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1.
- Capítulo de libro con arbitraje
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Dosidicus gigas, humboldt squid
Rui, Rosa ; Yamashiro, Carmen (coaut.) ; Markaida Aburto, Unai (coaut.) ; Rodhouse, Paul G. K. (coaut.) ; Waluda, Claire M. (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Keyl, Friedemann (coaut.) ; O´Dor, Ron (coaut.) ; Stewart, Julia S. (coaut.) ; Gilly, William F. (coaut.) ;
Contenido en: Advances in squid biology, ecology and fisheries: myopsid squids New York : Nova Science Publishers, 2013 p. 169-206 ISBN:1-62808331X, 978-1628083316
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Resumen en: Inglés |
Resumen en inglés

Dosidicus gigas (Humboldt or jumbo squid) (Orbigny, 1835) is the largest ommastrephid squid, reaching up to 1.2m mantle length and 65kg in weight. This pelagic squid is endemic to the eastern Pacific Ocean and is particularly abundant in the highly productive waters of the California and Humboldt Current systems, and the Costa Rica Dome upwelling region. The intra-specific population structure of D. gigas is complex, since this species quickly responds to environmental variability driven by El Niño and LaNiña events in both current systems by rapidly changing its biological characteristics, such as somatic and reproductive investment. Oocyte development is asynchronous and the potential fecundity averages around 18–21 million oocytes; the maximum value estimated (32 million oocytes) is the largest ever recorded for any cephalopod so far. Hatching occurs between 6 to 9 days after fertilization at 18°C, but temperatures below 15°C and above 25°C do not allow complete embryonic development. D. gigas passes through a posthatching paralarval stage called the rhynchoteuthion and during this stage the two tentacles are fused into a well-developed proboscis. During the paralarval and subsequent juvenile stages Humboldt squid have a monthly growth rate of up to 80 mm in mantle length, and grow up 60 mm per month in the later stages. This is the highest growth rate reported for any cephalopod species, and enables this species to reach the reported maximum mantle lengths in a short lifespan (12 to 24 months). Although the lack of population structure across its large range suggests a high level of gene flow and substantial horizontal migration, specific migratory pathways in the Pacific Ocean have not yet been demonstrated. Long-distance migration is an important element in the lifehistory of Humboldt squid and may be associated with differential growth rates and size and at full maturity.

The recent poleward range expansion of D. gigasis likely associated with warmer periods following El Niño/La Niña events, an ongoing expansion of the oxygen minimum zone (OMZ) in the Eastern Pacific, and changing ecosystem interactions including food availability, competition and predation. Humboldt squid feed primarily on small mesopelagic (midwater) fishes, crustaceans, and cephalopods as well as commercially important coastal fishes and squid in the recently expanded range. Typical daily behavior involves vertical migrations from near-surface waters at nighttime to mesopelagic depths above or within the OMZ during the daytime. Whereas the OMZ restricts the depth distribution of many competing vertebrate predators to the upper surface layers due to limited hypoxia tolerance, D. gigas circumvents similar restrictions via metabolic suppression. In addition to its critical role both as prey and predator in the eastern Pacific, D. gigas is an economically important species and the target of what has recently become the world’s largest invertebrate fishery.


2.
- Artículo con arbitraje
Food in early life stages of Dosidicus gigas (Cephalopoda: Ommastrephidae) from the Gulf of California, Mexico
Camarillo Coop, Susana ; Salinas Zavala, César Augusto (coaut.) ; Lavaniegos Espejo, Bertha Eugenia (coaut.) ; Markaida Aburto, Unai (coaut.) ;
Contenido en: Journal of the Marine Biological Association of the United Kingdom Vol. 93, no. 07 (November 2013), p. 1903-1910 ISSN: 0025-3154
Resumen en: Inglés |
Resumen en inglés

The digestive system of 36 paralarvae and 150 juvenile Dosidicus gigas were analysed to determine the diet. The early life stages were collected in the central and south region of the Gulf of California during different years and ranged in dorsal mantle length (ML) from 2.8 to 120.5 mm. The food content was separated first into identifiable material (IM) and non-identifiable material (NIM). All paralarvae contained only NIM stored mainly in the caecum rather than stomach. Juvenile squid feed on nine different prey types: euphausiids, copepods, amphipods, unidentified crustaceans, fishes, cephalopods, pteropods, bivalves and polychaetes. The IM were found mainly in the stomachs of juveniles with increasing number and diversity of prey in a function of increasing squid body size. In fact, juveniles from 60 to 120 mm ML had high stomach fullness percentages in half full and completely full stomachs suggesting improvement of swimming and hunting behaviour as they grow.


3.
Artículo
Horizontal movements, vertical-habitat utilization and diet of the jumbo squid (Dosidicus gigas) in the Pacific Ocean off Baja California Sur, Mexico
Bazzino, Gastón ; Gilly, William F. (coaut.) ; Markaida Aburto, Unai (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Ramos Castillejos, Jorge (coaut.) ;
Contenido en: Progress in Oceanography Vol. 86, no. 1-2 (July-August 2010), p. 59-71 ISSN: 0079-6611
Resumen en: Inglés |
Resumen en inglés

We deployed four pop-up archival-transmitting (PAT) tags on jumbo squid (Dosidicus gigas) collected in the Pacific Ocean off the main entrance to Magdalena Bay on the Baja California peninsula in June 2005. This is the first successful deployment of PAT tags on jumbo squid in an area outside the Gulf of California. Summary data were obtained through the ARGOS satellite system for three of the tags; the fourth tag was physically recovered. All of the tagged squid tended to remain on the shallow continental shelf for several days after tagging and then moved offshore into deeper water. Three of the four squid appeared to migrate in a general southerly direction while the fourth remained offshore of Magdalena Bay. All of the squid spent most daylight hours at depths that were associated with the hypoxic oxygen minimum layer, and at night they spent a majority of time in the upper 50 m of the water column. Stomach content analysis and tag temperature–depth data during the first days after tagging revealed that the squid were feeding on pelagic red crabs (Pleuroncodes planipes) and several larger, neritic fishes over the continental shelf off Magdalena Bay during a seasonal nearshore upwelling. Comparison of our results with those previously collected in the Gulf of California reveal that Dosidicus gigas can vary its behavior and diet to suit local environmental conditions. This adaptability is likely to be an important factor in the ability of D. gigas to invade and colonize new areas.


4.
Artículo
Age, growth and maturity of jumbo squid (Dosidicus gigas d'orbigny, 1835) off the western coast of the Baja California Peninsula
Mejia-Rebollo, Arminda ; Quiñónez-Velázquez, Casimiro (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Markaida Aburto, Unai (coaut.) ;
Contenido en: California Cooperative Oceanic Fisheries Investigations Reports Vol. 49 (2008), p. 256-262 ISSN: 0575-3317
Resumen en: Inglés |
Resumen en inglés

Although jumbo squid (Dosidicus gigas) live off the western coast of Baja California, México, biological information for the species from this area is scarce.We processed the statoliths of 191 squid (144 females and 47 males) caught off western Baja California during 2004. The oldest male was 391 days old (mature at 690 mm dorsal mantle length,ML) and the oldest female was 433 days old (mature at 700 mm ML). Birth dates for both sexes were concentrated in January, indicative of a reproductive peak. Jumbo squid growth was best described by the logistic model. The largest females were larger (100 mm ML) and lived longer (1.4 months) than the largest males.The maximum daily growth rate in females was 2.09 mm per day (at 220 days; 407.6 mm ML) and in males was 2.1 mm per day (at 200 days; 365.9 mm ML). Finally,we conclude that squid from the Gulf of California grow faster than squid from off the western coast of Baja California.


5.
Artículo
Food and feeding of jumbo squid Dosidicus gigas in the central Gulf of California during 2005-2007
Markaida Aburto, Unai ; Gilly, William F. (coaut.) ; Salinas Zavala, César Augusto (coaut.) ; Rosas Luis, Rigoberto (coaut.) ; Booth, J. T. Ashley (coaut.) ;
Contenido en: California Cooperative Oceanic Fisheries Investigations Reports Vol. 49 (2008), 90-103 ISSN: 0575-3317

6.
Artículo
*En hemeroteca, SIBE-Campeche
Variabilidad estacional e interanual de la concentración de clorofila y la temperatura superficial del mar en la región occidental del Golfo de México: 1996-2007
Manzano Sarabia, Mercedes Marlene ; Salinas Zavala, César Augusto (coaut.) ;
Contenido en: Interciencia Vol. 33, no. 9 (September 2008), p. 628-634 ISSN: 0378-1844
Nota: En hemeroteca, SIBE-Campeche
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Resumen en: Español | Inglés | Portugués |
Resumen en español

Se presenta una descripción general del patrón estacional de la clorofila a (Chl-a) y temperatura superficial del mar (TSM) en la región occidental del Golfo de México (Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán y Quintana Roo), así como el análisis de la variabilidad interanual en los estados de Tabasco y Campeche como estudios de caso. Las series de tiempo se estimaron a partir de imágenes de satélite derivadas de los sensores OCTS-SeaWiFS (1996-2007) y AVHRR (1996-2006). Se identifi- caron dos periodos donde predominaron las condiciones cálidas (1997-1999) y frías (2000-2001), los cuales podrían relacionarse con cambios en la estructura del ecosistema de esta región.

Resumen en inglés

A general description of the seasonal pattern of chlorophyll a (Chl-a) and sea surface temperature (SST) in the Western Gulf of Mexico (Taumalipas, Veracruz, Tabasco, Campeche, Yucatan and Quitana Roo) is presented, as well as an analysis of the inter-annual variability in the states of Tabasco and Campeche, as case studies. The time series were estimated from satellite images obtained with the OCTS-SeaWiFS (1996-2007) y AVHRR (1996-2006) sensors. Two periods when warm conditions (1997-1999) and cold conditions (2000-2001) predominated were identified, which could be related to changes in the regional ecosystem.

Resumen en portugués

Apresenta-se uma descrição geral do padrão estacional da clorofila a (Chl-a) e temperatura superficial do mar (TSM) na região ocidental do Golfo do México (Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán e Quintana Roo), assim como a análise da variabilidade interanual nos estados de Tabasco e Campeche como estudos de caso. As séries de tempo se estimaram a partir de imagens de satélite derivadas dos sensores OCTS-SeaWiFS (1996-2007) e AVHRR (1996-2006). Identificaram-se dois períodos onde predominaram as condições cálidas (1997-1999) e frias (2000-2001), os quais poderiam relacionar-se com mudanças na estrutura do ecossistema desta região.


7.
Capítulo de libro
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Studies of the jumbo squid (Dosidicus gigas d´Orbigny, 1835) in Mexico: fishery, ecology and climate
Salinas Zavala, César Augusto (autor) ; Camarillo Coop, Susana (autora) ; Mejia Rebollo, Arminda (autora) ; Rosas Luis, Rigoberto (autor) ; Ramos Castillejos, Jorge (autor) ; Ramírez Rojo, R. (coaut.) ; Arizmendi Cárdenas, Diana (autora) ; Bazzino, Gastón (autor) ; Dimaté Velázquez, N. (coaut.) ; Markaida Aburto, Unai (autor) ;
Disponible en línea
Contenido en: The role of squid in open ocean ecosystems / Robert J. Olson, Jock W. Young (editores) Honolulu, Hawaii, United States : Report of a GLOBEC-CLIOTOP/PFRP Workshop, 2006 p. 35-41
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8.
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Trophic ecology of jumbo squid, Dosidicus gigas in the Gulf of California and adjacent waters
Markaida Aburto, Unai (autor) ; Rosas, Rigo (autor) ; Salinas Zavala, César Augusto (autor) ; Gilly, William F. (autor) ;
Disponible en línea
Contenido en: The role of squid in open ocean ecosystems / Robert J. Olson, Jock W. Young (Eds.) Honolulu, Hawaii, United States : Report of a GLOBEC-CLIOTOP/PFRP Workshop, 2006 p. 53-54
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