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Abstract:

The larval development of the squat lobster Munida subrugosa from subantarctic waters of the Beagle Channel (Tierra del Fuego, Argentina) was studied under controlled laboratory conditions of temperature, salinity, and food supply. Developmental times, survival, and growth of larvae and early juveniles were investigated. Hatching of the entire brood always occurred during one night. Larvae were kept in 100ml individual bowls with filtered seawater at 8 ± 0.5°C and fed with Artemia spp. nauplii three times a week. Larvae passed through 6 zoeal instars and one megalopa. Previously, only five zoeal instars were known from this species. Mean cumulative durations of the zoeal stages I to VI were: 20.5 ± 2.5, 33.9 ± 4.1, 43.3 ± 5.4, 52.6 ± 5, 61.2 ± 3.9, and 83days, respectively. By adding the 28days that a single megalopa took to metamorphose to crab I stage, the complete larval development lasted 111days. Highest mortality occurred prior to the moult from the zoea I to zoea II stage (79.21% ± 18.65%) and during the moult from zoea VI to megalopa (92.86%). Carapace length was 1.64 ± 0.06, 1.52 ± 0.16, 1.57 ± 0.26, 1.64 ± 0.21, 2.11 ± 0.35, and 2.58 ± 0.19mm, for zoeal stages I to VI, respectively. Carapace length of megalopae and crab I instars was similar (2.85 ± 0.28 and the 2.84 ± 0.05, respectively). Unlike other subantarctic decapods, which show a tendency towards abbreviated larval development and/or some degree of endotrophy, M. subrugosa shows an extended planktotrophic larval development synchronized with short seasonal plankton production in austral summers. © 2007 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory
Autor:Pérez-Barros, P.; Thatje, S.; Calcagno, J.A.; Lovrich, G.A.
Filiación:Centro Austral de Investigaciones Científicas, Consejo Nacional de Investigaciones Científicas y Técnicas (CADIC - CONICET), CADIC - CC 92, V9410BFD Ushuaia, Tierra del Fuego, Argentina
National Oceanography Centre, Southampton, School of Ocean and Earth Science, University of Southampton, SO14 3ZH Southampton, United Kingdom
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, CONICET, Pabellon II Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
Palabras clave:Beagle Channel; Decapods; Growth; Larvae; Survival; aquaculture production; food supply; growth; hatching; laboratory method; larval development; lobster; mortality; rearing; salinity; survival; temperature; Anomura; Artemia; Decapoda (Crustacea); Galatheidae; Munida subrugosa
Año:2007
Volumen:352
Número:1
Página de inicio:35
Página de fin:41
DOI: http://dx.doi.org/10.1016/j.jembe.2007.06.035
Título revista:Journal of Experimental Marine Biology and Ecology
Título revista abreviado:J. Exp. Mar. Biol. Ecol.
ISSN:00220981
CODEN:JEMBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220981_v352_n1_p35_PerezBarros

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Citas:

---------- APA ----------
Pérez-Barros, P., Thatje, S., Calcagno, J.A. & Lovrich, G.A. (2007) . Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory. Journal of Experimental Marine Biology and Ecology, 352(1), 35-41.
http://dx.doi.org/10.1016/j.jembe.2007.06.035
---------- CHICAGO ----------
Pérez-Barros, P., Thatje, S., Calcagno, J.A., Lovrich, G.A. "Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory" . Journal of Experimental Marine Biology and Ecology 352, no. 1 (2007) : 35-41.
http://dx.doi.org/10.1016/j.jembe.2007.06.035
---------- MLA ----------
Pérez-Barros, P., Thatje, S., Calcagno, J.A., Lovrich, G.A. "Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory" . Journal of Experimental Marine Biology and Ecology, vol. 352, no. 1, 2007, pp. 35-41.
http://dx.doi.org/10.1016/j.jembe.2007.06.035
---------- VANCOUVER ----------
Pérez-Barros, P., Thatje, S., Calcagno, J.A., Lovrich, G.A. Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory. J. Exp. Mar. Biol. Ecol. 2007;352(1):35-41.
http://dx.doi.org/10.1016/j.jembe.2007.06.035