Larval development of the subantarctic king crabs Lithodes santolla and Paralomis granulosa reared in the laboratory
The larval development and survival in the two subantarctic lithodid crabs Lithodes santolla (Jaquinot) and Paralomis granulosa (Molina) from the Argentine Beagle Channel were studied in laboratory cultures. In L. santolla, larval development lasted about 70 days, passing through three zoeal stages...
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2004
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1438387X_v58_n1_p11_Calcagno http://hdl.handle.net/20.500.12110/paper_1438387X_v58_n1_p11_Calcagno |
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paper:paper_1438387X_v58_n1_p11_Calcagno2023-06-08T16:15:50Z Larval development of the subantarctic king crabs Lithodes santolla and Paralomis granulosa reared in the laboratory Crustacea Decapoda Larval development Subantarctic crab larval development survival Beagle Channel South America Animalia Argentina (fish) Artemia Chaceon affinis Crustacea Decapoda (Crustacea) Limulus Lithodes Lithodes santolla Paralomis Paralomis granulosa The larval development and survival in the two subantarctic lithodid crabs Lithodes santolla (Jaquinot) and Paralomis granulosa (Molina) from the Argentine Beagle Channel were studied in laboratory cultures. In L. santolla, larval development lasted about 70 days, passing through three zoeal stages and the megalopa stage, with a duration of approximately 4, 7, 11 and 48 days, respectively. The larval development in P. granulosa is more abbreviated, comprising only two zoeal stages and the megalopa stage, with 6, 11 and 43 days' duration, respectively. In both species, we tested for effects of presence versus absence of food (Artemia nauplii) on larval development duration and survival rate. In P. granulosa, we also studied effects of different rearing conditions, such as individual versus mass cultures, as well as aerated versus unaerated cultures. No differences in larval development duration and survival were observed between animals subjected to those different rearing conditions. The lack of response to the presence or absence of potential food confirms, in both species, a complete lecithotrophic mode of larval development. Since lithodid crabs are of high economic importance in the artisanal fishery in the southernmost parts of South America, the knowledge of optimal rearing conditions for lithodid larvae is essential for future attempts at repopulating the collapsing natural stocks off Tierra del Fuego. © Springer-Verlag and AWI 2003. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1438387X_v58_n1_p11_Calcagno http://hdl.handle.net/20.500.12110/paper_1438387X_v58_n1_p11_Calcagno |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Crustacea Decapoda Larval development Subantarctic crab larval development survival Beagle Channel South America Animalia Argentina (fish) Artemia Chaceon affinis Crustacea Decapoda (Crustacea) Limulus Lithodes Lithodes santolla Paralomis Paralomis granulosa |
| spellingShingle |
Crustacea Decapoda Larval development Subantarctic crab larval development survival Beagle Channel South America Animalia Argentina (fish) Artemia Chaceon affinis Crustacea Decapoda (Crustacea) Limulus Lithodes Lithodes santolla Paralomis Paralomis granulosa Larval development of the subantarctic king crabs Lithodes santolla and Paralomis granulosa reared in the laboratory |
| topic_facet |
Crustacea Decapoda Larval development Subantarctic crab larval development survival Beagle Channel South America Animalia Argentina (fish) Artemia Chaceon affinis Crustacea Decapoda (Crustacea) Limulus Lithodes Lithodes santolla Paralomis Paralomis granulosa |
| description |
The larval development and survival in the two subantarctic lithodid crabs Lithodes santolla (Jaquinot) and Paralomis granulosa (Molina) from the Argentine Beagle Channel were studied in laboratory cultures. In L. santolla, larval development lasted about 70 days, passing through three zoeal stages and the megalopa stage, with a duration of approximately 4, 7, 11 and 48 days, respectively. The larval development in P. granulosa is more abbreviated, comprising only two zoeal stages and the megalopa stage, with 6, 11 and 43 days' duration, respectively. In both species, we tested for effects of presence versus absence of food (Artemia nauplii) on larval development duration and survival rate. In P. granulosa, we also studied effects of different rearing conditions, such as individual versus mass cultures, as well as aerated versus unaerated cultures. No differences in larval development duration and survival were observed between animals subjected to those different rearing conditions. The lack of response to the presence or absence of potential food confirms, in both species, a complete lecithotrophic mode of larval development. Since lithodid crabs are of high economic importance in the artisanal fishery in the southernmost parts of South America, the knowledge of optimal rearing conditions for lithodid larvae is essential for future attempts at repopulating the collapsing natural stocks off Tierra del Fuego. © Springer-Verlag and AWI 2003. |
| title |
Larval development of the subantarctic king crabs Lithodes santolla and Paralomis granulosa reared in the laboratory |
| title_short |
Larval development of the subantarctic king crabs Lithodes santolla and Paralomis granulosa reared in the laboratory |
| title_full |
Larval development of the subantarctic king crabs Lithodes santolla and Paralomis granulosa reared in the laboratory |
| title_fullStr |
Larval development of the subantarctic king crabs Lithodes santolla and Paralomis granulosa reared in the laboratory |
| title_full_unstemmed |
Larval development of the subantarctic king crabs Lithodes santolla and Paralomis granulosa reared in the laboratory |
| title_sort |
larval development of the subantarctic king crabs lithodes santolla and paralomis granulosa reared in the laboratory |
| publishDate |
2004 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1438387X_v58_n1_p11_Calcagno http://hdl.handle.net/20.500.12110/paper_1438387X_v58_n1_p11_Calcagno |
| _version_ |
1768542236163702784 |