Reproductive biology of three caridean shrimp, Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata (Caridea: Decapoda), from hydrothermal vents

The caridean shrimp Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata , together with bathymodiolid mussels, dominate the vent fauna along the Mid-Atlantic Ridge. Vent shrimp show the characteristic reproductive patterns of caridean decapods. The gonads are paired organs overlying the d...

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Published in:Journal of the Marine Biological Association of the United Kingdom
Main Authors: Llodra, Eva Ramirez, Tyler, Paul A., Copley, Jonathan T.P.
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2000
Subjects:
Online Access:http://dx.doi.org/10.1017/s0025315400002174
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400002174
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spelling crcambridgeupr:10.1017/s0025315400002174 2024-09-30T14:39:54+00:00 Reproductive biology of three caridean shrimp, Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata (Caridea: Decapoda), from hydrothermal vents Llodra, Eva Ramirez Tyler, Paul A. Copley, Jonathan T.P. 2000 http://dx.doi.org/10.1017/s0025315400002174 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400002174 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 80, issue 3, page 473-484 ISSN 0025-3154 1469-7769 journal-article 2000 crcambridgeupr https://doi.org/10.1017/s0025315400002174 2024-09-04T04:04:47Z The caridean shrimp Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata , together with bathymodiolid mussels, dominate the vent fauna along the Mid-Atlantic Ridge. Vent shrimp show the characteristic reproductive patterns of caridean decapods. The gonads are paired organs overlying the digestive gland under the carapace. In the ovaries, the oogonia (∼20-30 μm diameter) proliferate in the germinal epithelium at the periphery of the gonad, developing into previtellogenic oocytes. The previtellogenic oocytes grow to 70-100 μm before undergoing vitellogenesis. The maximum size for mature oocytes ranged between 200 and 500 μm depending on the species and the sample. The oocyte size–frequency data show no evidence of synchrony in oogenesis at population level for any of the species studied. Mirocaris fortunata is the only species where gravid females are commonly collected. The brood is carried on the pleopods, and the number of eggs per female ranges from 25 to 503, with a mean egg length of 0.79±0.14 mm. There is a positive correlation between fecundity and body size, characteristic of crustaceans. One ovigerous C. chacei and two R.exoculata have been studied. The former was carrying 2510 eggs and the later 988 small eggs in an early stage of development. The fecundity of M. fortunata , C. chacei and R. exoculata is significantly higher than that of species from the Acanthephyra group collected in the north-east Atlantic. Article in Journal/Newspaper North East Atlantic Cambridge University Press Mid-Atlantic Ridge Journal of the Marine Biological Association of the United Kingdom 80 3 473 484
institution Open Polar
collection Cambridge University Press
op_collection_id crcambridgeupr
language English
description The caridean shrimp Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata , together with bathymodiolid mussels, dominate the vent fauna along the Mid-Atlantic Ridge. Vent shrimp show the characteristic reproductive patterns of caridean decapods. The gonads are paired organs overlying the digestive gland under the carapace. In the ovaries, the oogonia (∼20-30 μm diameter) proliferate in the germinal epithelium at the periphery of the gonad, developing into previtellogenic oocytes. The previtellogenic oocytes grow to 70-100 μm before undergoing vitellogenesis. The maximum size for mature oocytes ranged between 200 and 500 μm depending on the species and the sample. The oocyte size–frequency data show no evidence of synchrony in oogenesis at population level for any of the species studied. Mirocaris fortunata is the only species where gravid females are commonly collected. The brood is carried on the pleopods, and the number of eggs per female ranges from 25 to 503, with a mean egg length of 0.79±0.14 mm. There is a positive correlation between fecundity and body size, characteristic of crustaceans. One ovigerous C. chacei and two R.exoculata have been studied. The former was carrying 2510 eggs and the later 988 small eggs in an early stage of development. The fecundity of M. fortunata , C. chacei and R. exoculata is significantly higher than that of species from the Acanthephyra group collected in the north-east Atlantic.
format Article in Journal/Newspaper
author Llodra, Eva Ramirez
Tyler, Paul A.
Copley, Jonathan T.P.
spellingShingle Llodra, Eva Ramirez
Tyler, Paul A.
Copley, Jonathan T.P.
Reproductive biology of three caridean shrimp, Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata (Caridea: Decapoda), from hydrothermal vents
author_facet Llodra, Eva Ramirez
Tyler, Paul A.
Copley, Jonathan T.P.
author_sort Llodra, Eva Ramirez
title Reproductive biology of three caridean shrimp, Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata (Caridea: Decapoda), from hydrothermal vents
title_short Reproductive biology of three caridean shrimp, Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata (Caridea: Decapoda), from hydrothermal vents
title_full Reproductive biology of three caridean shrimp, Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata (Caridea: Decapoda), from hydrothermal vents
title_fullStr Reproductive biology of three caridean shrimp, Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata (Caridea: Decapoda), from hydrothermal vents
title_full_unstemmed Reproductive biology of three caridean shrimp, Rimicaris exoculata, Chorocaris chacei and Mirocaris fortunata (Caridea: Decapoda), from hydrothermal vents
title_sort reproductive biology of three caridean shrimp, rimicaris exoculata, chorocaris chacei and mirocaris fortunata (caridea: decapoda), from hydrothermal vents
publisher Cambridge University Press (CUP)
publishDate 2000
url http://dx.doi.org/10.1017/s0025315400002174
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315400002174
geographic Mid-Atlantic Ridge
geographic_facet Mid-Atlantic Ridge
genre North East Atlantic
genre_facet North East Atlantic
op_source Journal of the Marine Biological Association of the United Kingdom
volume 80, issue 3, page 473-484
ISSN 0025-3154 1469-7769
op_rights https://www.cambridge.org/core/terms
op_doi https://doi.org/10.1017/s0025315400002174
container_title Journal of the Marine Biological Association of the United Kingdom
container_volume 80
container_issue 3
container_start_page 473
op_container_end_page 484
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