Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory
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 juveni...
Guardado en:
| Autores principales: | , , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00220981_v352_n1_p35_PerezBarros |
| Aporte de: |
| id |
todo:paper_00220981_v352_n1_p35_PerezBarros |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_00220981_v352_n1_p35_PerezBarros2023-10-03T14:26:20Z Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory Pérez-Barros, P. Thatje, S. Calcagno, J.A. Lovrich, G.A. 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 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. Fil:Pérez-Barros, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calcagno, J.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lovrich, G.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00220981_v352_n1_p35_PerezBarros |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 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 |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Pérez-Barros, P. Thatje, S. Calcagno, J.A. Lovrich, G.A. |
| author_facet |
Pérez-Barros, P. Thatje, S. Calcagno, J.A. Lovrich, G.A. |
| author_sort |
Pérez-Barros, P. |
| title |
Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory |
| title_short |
Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory |
| title_full |
Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory |
| title_fullStr |
Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory |
| title_full_unstemmed |
Larval development of the subantarctic squat lobster Munida subrugosa (White, 1847) (Anomura: Galatheidae), reared in the laboratory |
| title_sort |
larval development of the subantarctic squat lobster munida subrugosa (white, 1847) (anomura: galatheidae), reared in the laboratory |
| url |
http://hdl.handle.net/20.500.12110/paper_00220981_v352_n1_p35_PerezBarros |
| work_keys_str_mv |
AT perezbarrosp larvaldevelopmentofthesubantarcticsquatlobstermunidasubrugosawhite1847anomuragalatheidaerearedinthelaboratory AT thatjes larvaldevelopmentofthesubantarcticsquatlobstermunidasubrugosawhite1847anomuragalatheidaerearedinthelaboratory AT calcagnoja larvaldevelopmentofthesubantarcticsquatlobstermunidasubrugosawhite1847anomuragalatheidaerearedinthelaboratory AT lovrichga larvaldevelopmentofthesubantarcticsquatlobstermunidasubrugosawhite1847anomuragalatheidaerearedinthelaboratory |
| _version_ |
1807314582316777472 |