Descripción del primer estadio larvario de Pachycheles chubutensis (Boschi, 1963) (Crustacea, Decapoda, Anomura) en Patagonia

González-Pisani, Ximena; Ward, Catalina Pastor de; Dupré, Enrique

doi:10.4067/s0717-71782006000200020

Cited by 5 publications

(5 citation statements)

References 5 publications

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“…Se seleccionaron hembras que presentaban huevos en estadio III avanzado (Lardies & Wehrtman 1996), las cuales fueron ubicadas en cubetas con agua de mar filtrada (1μ) y alimentadas cada 48 h con nauplios de Artemia salina obtenidos a partir de huevos recién eclosionados en el laboratorio (González-Pizani et al 2006).…”

Section: Materials Y Métodosunclassified

“…Aspectos de la biología reproductiva como la producción de huevos, desarrollo larval y la estimación de fecundidad se estudian con el objeto de comprender y asegurar la renovación natural de sus poblaciones, como también para efectuar un manejo adecuado en aquellas especies de importancia comercial (Caddy 1989, Scelzo 1997, Hernández & Palma 2003, González-Pizani et al 2006.…”

Section: Introductionunclassified

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Efecto del EDTA sobre la toxicidad del cromo (VI) en el desarrollo larval de Petrolisthes laevigatus (Guérin, 1835)

Lermanda

Urrutia

Novoa

et al. 2009

Rev. biol. mar. oceanogr.

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Abstract.-The larval development and growth ofPetrolisthes laevigatus were analyzed in five concentrations of Cr VI, 0 (control), 0.25, 0.5, 1, and 5 mg L -1 chrome (VI) in filtered sea water and the same chrome (VI) concentrations, plus 0.7 mg L -1 EDTA. Analyses were done during 21-day period. Measurement of total length, individual wet average larvae weight and the presence or absence of deformations in P. laevigatus larvae were determined. The larvae of the control group (0 mg L -1 chrome (VI)) did not exhibit deformations and developed normally. The total length and biomass of the larvae exposed to Cr VI were significantly lower than those of the larvae subjected to Cr VI plus EDTA concentrations and the control larvae. It is hereby confirmed that the presence of EDTA in the medium mitigates the negative effects of Cr VI via a yet unknown mechanism.Key words: Crab, zoea larva, toxicity, Cr (VI) + EDTA Resumen.-Se analizó el desarrollo larval y el crecimiento de Petrolisthes laevigatus en cinco concentraciones de Cr (VI): 0 (control), 0,25; 0,5; 1 y 5 mg L -1 de cromo (VI) en agua de mar filtrada y las mismas cinco concentraciones de cromo (VI) más la adición de 0,7 mg L -1 de EDTA. El estudio se condujo en 21 días. Se determinó longitud total, peso promedio y presencia o ausencia de malformaciones en larvas de P. laevigatus. Las larvas de las unidades control (0 mg L -1 de cromo (VI)) no presentaron malformaciones y se desarrollaron en forma normal. La longitud total y peso promedio de las larvas expuestas a Cr (VI) fueron significativamente menores con respecto a los de las larvas sometidas a las concentraciones de Cr (VI) más EDTA y a las unidades control. Se confirma que la presencia de EDTA en el medio atenúa los efectos negativos del Cr (VI) por un mecanismo aún no dilucidado.Palabras clave: Cangrejo, larva zoea, toxicidad, Cr (VI) + EDTA IntroducciónLos metales vertidos en fuentes de agua han tenido efectos negativos, en distintos grados, en el crecimiento, supervivencia y desarrollo de las especies que allí habitan. Principalmente son las primeras etapas del ciclo de vida de los organismos las que sufren los efectos negativos, en el tamaño de la primera reproducción, número de episodios reproductivos, ontogenia en las fases posteriores y longevidad de los organismos (Hadfield & Strathmann 1996, Natale et al. 2000, Boada et al. 2007. Es así que resulta preocupante el aumento de residuos con metales eliminados en la zona costera y el efecto que puede causar en las especies y el medioambiente.El cromo es un metal que ingresa como integrante de residuos líquidos al medio acuático, debido a su utilización en actividades tan diversas como: la industria textil, cueros, industrias de papel y cartón, petroquímica, abonos, refinerías, metalúrgica, vidrios, cementos, asbestos, pinturas, cerámicas, fungicidas, catálisis y galvanizados (Bodar et al. 1990, Rengaraj et al. 2001).Por ejemplo, un área que representa un segmento importante de la economía chilena, como Bahía San Vicente, recibiría a través de los eflue...

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Section: Materials Y Métodosunclassified

Section: Introductionunclassified

Efecto del EDTA sobre la toxicidad del cromo (VI) en el desarrollo larval de Petrolisthes laevigatus (Guérin, 1835)

Lermanda

Urrutia

Novoa

et al. 2009

Rev. biol. mar. oceanogr.

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“…The southeastern part of the South American continental shelf includes two biogeographic regions: the Argentinean (23Á428S) and Magellanic (42Á568S) provinces, each with its own characteristic decapod assemblage (Spivak 1997). Coastal and shelf waters off northeastern Patagonia between about 408 and 448S represent a transition zone between both regions where species of crabs and other taxa present contrasting life-cycle schedules (Dellatorre & Baro ´n 2008;Leal et al 2008;Dellatorre & Gonza ´lez-Pisani 2011;Gonzalez-Pisani 2011). Although early studies on decapod larvae of both provinces have addressed taxonomic issues (Boschi 1964;Boschi et al 1967Boschi et al , 1969Boschi & Scelzo 1968;Bacardit 1985a,b;) and biogeographical problems (Boschi 1981;Lovrich 1999), no study has been conducted on the seasonality and the presence and abundance of crab larvae in this transition zone.…”

Section: Introductionmentioning

confidence: 99%

Seasonal abundance and vertical distribution of crab larvae from northern Patagonia (Argentina): implications for their transport in a biogeographic boundary region

Dellatorre

Lovrich

Rojas³

et al. 2013

Marine Biology Research

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“…Research made to date on representatives of the South American Porcellanidae have consisted primarily of descriptions of adults and their zoogeography (Haig, 1966; Bremec & Cazzaniga, 1984; Gomes-da Silva et al , 1989; Boschi et al , 1992; Gomes-Veloso & Schmidt, 1993; Boschi, 1997; Stillman & Reeb, 2001; Lardies et al , 2004; Lazaruz-Agudelo & Cantera-Kintz, 2007; Emperaza, 2007). Studies carried out on early stages of development in this family have only included observations on morphology and phylogeny of their larvae (Boschi et al , 1967; Scelzo, 1976; Pinheiro & Fransozo, 1995; Lopez et al , 1997; Wehrtmann et al , 1997; Fransozo et al , 1998; Hattori & Pinheiro, 2001; Hernáez-Bove, 2001; Hernáez & Palma, 2003; Hernández et al , 2003; Rodríguez et al , 2004; Piñate et al , 2005; González-Pisani et al , 2006). Other studies have addressed aspects of reproduction in this group, such as fecundity, and reproductive effort (Amaro & Fransozo, 1995; López et al , 1997), little has been done on their embryonic development (Lardies & Wehrtmann, 1996; Hernández et al , 2005).…”

Section: Introductionmentioning

confidence: 99%

“…It is the only representative of the genus reported for Golfo Nuevo (42°S Chubut Province), Argentina. During the reproductive season, from the end of September to mid-March, this crab is found in abundance in the lower intertidal zone (González-Pisani et al , 2006). This species plays an important role in the marine ecosystem both as an adult in the benthos and as larvae in the water column.…”

Section: Introductionmentioning

confidence: 99%

Embryonic development of Pachycheles chubutensis (Decapoda: Anomura)

2009

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The different stages of embryonic development of the porcellanid crab Pachycheles chubutensis are described, along with the chronology of each stage at 16±1°C. Five different developmental stages (I–V) were recognized including: (i) early cells and 100% of the vitellum; (ii) formation of the embryonic primordium at the animal pole of the egg; (iii) presence of dark pigmentation on the posterior part of the ocular globe; (iv) appearance of chromatophores on mouth parts and in the abdominal zone; and (v) eye pigmentation in circular–oval form, filling the entire surface. The embryonic development lasts from spawning to hatching approximately 21 days, with the second stage being the longest.

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Descripción del primer estadio larvario de Pachycheles chubutensis (Boschi, 1963) (Crustacea, Decapoda, Anomura) en Patagonia

Cited by 5 publications

References 5 publications

Efecto del EDTA sobre la toxicidad del cromo (VI) en el desarrollo larval de Petrolisthes laevigatus (Guérin, 1835)

Efecto del EDTA sobre la toxicidad del cromo (VI) en el desarrollo larval de Petrolisthes laevigatus (Guérin, 1835)

Seasonal abundance and vertical distribution of crab larvae from northern Patagonia (Argentina): implications for their transport in a biogeographic boundary region

Embryonic development of Pachycheles chubutensis (Decapoda: Anomura)

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