Larval and early juvenile development of Paralomis granulosa reared at different temperatures: Tolerance of cold and food limitation in a lithodid crab from high latitudes

Paralomis granulosa Jacquinot is a commercially fished lithodid crab species living in subantarctic and cold-temperate regions of southern South America. Its larval stages (Zoea I, II, Megalopa) are fully lecithotrophic, developing in the complete absence of food from hatching through metamorphosis;...

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Autores principales: Lovrich, Gustavo Alejandro, Calcagno, Javier Angel
Publicado: 2003
Materias:
Cold tolerance
Juvenile growth
Larval development
Lithodidae
Paralomis granulosa
Temperature
cold tolerance
commercial species
crab
developmental biology
food limitation
larval development
latitude
rearing
(South)
South America
Crustacea
Decapoda (Crustacea taxon)
Decapoda (Crustacea)
Invertebrata
Paralomis
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01718630_v253_n_p243_Anger
http://hdl.handle.net/20.500.12110/paper_01718630_v253_n_p243_Anger
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01718630_v253_n_p243_Anger
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spelling paper:paper_01718630_v253_n_p243_Anger2023-06-08T15:18:39Z Larval and early juvenile development of Paralomis granulosa reared at different temperatures: Tolerance of cold and food limitation in a lithodid crab from high latitudes Lovrich, Gustavo Alejandro Calcagno, Javier Angel Cold tolerance Juvenile growth Larval development Lithodidae Paralomis granulosa Temperature cold tolerance commercial species crab developmental biology food limitation larval development latitude rearing (South) South America Crustacea Decapoda (Crustacea taxon) Decapoda (Crustacea) Invertebrata Lithodidae Lithodidae Paralomis Paralomis granulosa Paralomis granulosa Paralomis granulosa Jacquinot is a commercially fished lithodid crab species living in subantarctic and cold-temperate regions of southern South America. Its larval stages (Zoea I, II, Megalopa) are fully lecithotrophic, developing in the complete absence of food from hatching through metamorphosis; first feeding occurs in the first juvenile crab stage. In laboratory rearing experiments conducted at constant 1, 3, 6, 9, 12, and 15°C, we studied rates of larval and early juvenile survival and development in relation to temperature. At 1°C, many larvae (52%) reached the Megalopa stage almost 2 mo after hatching, but all died subsequently without passing through metamorphosis. Larval development was successfully completed at all other temperatures, with maximum survival at 6 to 9°C. The time of non-feeding larval development from hatching to metamorphosis lasted, on average, from 24 d (at 15°C) to almost 4 mo (117 d, at 3°C). When the experiment was terminated 1 yr after hatching, the 3rd (3°C) to 8th (15°C) juvenile crab instar had been reached. The relationship between the time of development through individual larval or juvenile stages (y) and temperature (T) was described as a power function (y = a × Tb, or log[y] = log[a] + b · log[T]; the same regression model was also used to describe the temperature-dependence of cumulative periods of development from hatching. The wide thermal tolerance window for successful larval development (at least 3 to 15°C) and the broad geographic range of this species show that the early life-cycle stages of P. granulosa are cold-eurythermal. This physiological trait together with larval independence of food indicate that this lithodid crab species is well adapted to severe conditions of cold in combination with the food-limitation in subantarctic regions. Since similar traits have been also observed in other Lithodidae, we suggest that early life-history adaptations to low temperatures and low planktonic productivity may explain the high number of lithodid species occurring at high latitudes and in the deep sea, i.e. in conditions under which other Decapoda show strongly reduced diversity. Fil:Lovrich, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calcagno, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2003 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01718630_v253_n_p243_Anger http://hdl.handle.net/20.500.12110/paper_01718630_v253_n_p243_Anger
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cold tolerance
Juvenile growth
Larval development
Lithodidae
Paralomis granulosa
Temperature
cold tolerance
commercial species
crab
developmental biology
food limitation
larval development
latitude
rearing
(South)
South America
Crustacea
Decapoda (Crustacea taxon)
Decapoda (Crustacea)
Invertebrata
Lithodidae
Lithodidae
Paralomis
Paralomis granulosa
Paralomis granulosa
spellingShingle Cold tolerance
Juvenile growth
Larval development
Lithodidae
Paralomis granulosa
Temperature
cold tolerance
commercial species
crab
developmental biology
food limitation
larval development
latitude
rearing
(South)
South America
Crustacea
Decapoda (Crustacea taxon)
Decapoda (Crustacea)
Invertebrata
Lithodidae
Lithodidae
Paralomis
Paralomis granulosa
Paralomis granulosa
Lovrich, Gustavo Alejandro
Calcagno, Javier Angel
Larval and early juvenile development of Paralomis granulosa reared at different temperatures: Tolerance of cold and food limitation in a lithodid crab from high latitudes
topic_facet Cold tolerance
Juvenile growth
Larval development
Lithodidae
Paralomis granulosa
Temperature
cold tolerance
commercial species
crab
developmental biology
food limitation
larval development
latitude
rearing
(South)
South America
Crustacea
Decapoda (Crustacea taxon)
Decapoda (Crustacea)
Invertebrata
Lithodidae
Lithodidae
Paralomis
Paralomis granulosa
Paralomis granulosa
description Paralomis granulosa Jacquinot is a commercially fished lithodid crab species living in subantarctic and cold-temperate regions of southern South America. Its larval stages (Zoea I, II, Megalopa) are fully lecithotrophic, developing in the complete absence of food from hatching through metamorphosis; first feeding occurs in the first juvenile crab stage. In laboratory rearing experiments conducted at constant 1, 3, 6, 9, 12, and 15°C, we studied rates of larval and early juvenile survival and development in relation to temperature. At 1°C, many larvae (52%) reached the Megalopa stage almost 2 mo after hatching, but all died subsequently without passing through metamorphosis. Larval development was successfully completed at all other temperatures, with maximum survival at 6 to 9°C. The time of non-feeding larval development from hatching to metamorphosis lasted, on average, from 24 d (at 15°C) to almost 4 mo (117 d, at 3°C). When the experiment was terminated 1 yr after hatching, the 3rd (3°C) to 8th (15°C) juvenile crab instar had been reached. The relationship between the time of development through individual larval or juvenile stages (y) and temperature (T) was described as a power function (y = a × Tb, or log[y] = log[a] + b · log[T]; the same regression model was also used to describe the temperature-dependence of cumulative periods of development from hatching. The wide thermal tolerance window for successful larval development (at least 3 to 15°C) and the broad geographic range of this species show that the early life-cycle stages of P. granulosa are cold-eurythermal. This physiological trait together with larval independence of food indicate that this lithodid crab species is well adapted to severe conditions of cold in combination with the food-limitation in subantarctic regions. Since similar traits have been also observed in other Lithodidae, we suggest that early life-history adaptations to low temperatures and low planktonic productivity may explain the high number of lithodid species occurring at high latitudes and in the deep sea, i.e. in conditions under which other Decapoda show strongly reduced diversity.
author Lovrich, Gustavo Alejandro
Calcagno, Javier Angel
author_facet Lovrich, Gustavo Alejandro
Calcagno, Javier Angel
author_sort Lovrich, Gustavo Alejandro
title Larval and early juvenile development of Paralomis granulosa reared at different temperatures: Tolerance of cold and food limitation in a lithodid crab from high latitudes
title_short Larval and early juvenile development of Paralomis granulosa reared at different temperatures: Tolerance of cold and food limitation in a lithodid crab from high latitudes
title_full Larval and early juvenile development of Paralomis granulosa reared at different temperatures: Tolerance of cold and food limitation in a lithodid crab from high latitudes
title_fullStr Larval and early juvenile development of Paralomis granulosa reared at different temperatures: Tolerance of cold and food limitation in a lithodid crab from high latitudes
title_full_unstemmed Larval and early juvenile development of Paralomis granulosa reared at different temperatures: Tolerance of cold and food limitation in a lithodid crab from high latitudes
title_sort larval and early juvenile development of paralomis granulosa reared at different temperatures: tolerance of cold and food limitation in a lithodid crab from high latitudes
publishDate 2003
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01718630_v253_n_p243_Anger
http://hdl.handle.net/20.500.12110/paper_01718630_v253_n_p243_Anger
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AT calcagnojavierangel larvalandearlyjuveniledevelopmentofparalomisgranulosarearedatdifferenttemperaturestoleranceofcoldandfoodlimitationinalithodidcrabfromhighlatitudes
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