Planktonic Phases in Symbiotic Copepods: a Review

In symbiotic copepods, most naupliar stages are typically planktonic, playing a primary role in dispersal, while the first copepodid usually represents the infective stage. Later copepodid stages, including adults, are associated with host organisms. Many symbiotic copepods have abbreviated life cyc...

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Main Authors: Susumu Ohtsuka, Ione Madinabeitia, Hirofumi Yamashita, B. A. Venmathi Maran, Eduardo Suárez-Morales, Ju-shey Ho
Format: Article
Language:English
Published: 2018
Subjects:
Online Access:https://eprints.ums.edu.my/id/eprint/22724/1/Planktonic%20Phases%20in%20Symbiotic%20Copepods.pdf
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author Susumu Ohtsuka
Ione Madinabeitia
Hirofumi Yamashita
B. A. Venmathi Maran
Eduardo Suárez-Morales
Ju-shey Ho
author_facet Susumu Ohtsuka
Ione Madinabeitia
Hirofumi Yamashita
B. A. Venmathi Maran
Eduardo Suárez-Morales
Ju-shey Ho
author_sort Susumu Ohtsuka
collection UMS
description In symbiotic copepods, most naupliar stages are typically planktonic, playing a primary role in dispersal, while the first copepodid usually represents the infective stage. Later copepodid stages, including adults, are associated with host organisms. Many symbiotic copepods have abbreviated life cycles, with a reduced number of naupliar stages and two different feeding habits. These patterns are presumably related to distinct life cycles strategies. Exceptional cases are exemplified by members of the Monstrillidae and Thaumatopsyllidae, both of which are protelean parasites, with infective nauplii and nonfeeding planktonic adults. In the Caligidae, the life cycle follows a generalized pattern, but adults of many species like Caligus undulatus seem to exhibit a dual mode of life involving host switching. Adults leaving the first host become temporarily planktonic before attaching to the final host. This dual mode of life is also found in adults of the Ergasilidae. Abbreviation of the planktonic phase is characteristic for some symbiotic taxa, thus suggesting that they have evolved to become highly efficient in locating and infecting new hosts without needing long-distance larval dispersal. The life cycle of copepods associated with zooplankters is also briefly reviewed. Zooplankters are clearly less used as hosts by copepods than benthic invertebrates. It is likely that symbiotic copepods dynamically utilize planktonic phases in their life cycle, thus maintaining the balance between dispersal, host location, reproduction, and predator-avoidance strategies.
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spelling ums.eprints-227242019-07-17T10:08:37Z https://eprints.ums.edu.my/id/eprint/22724/ Planktonic Phases in Symbiotic Copepods: a Review Susumu Ohtsuka Ione Madinabeitia Hirofumi Yamashita B. A. Venmathi Maran Eduardo Suárez-Morales Ju-shey Ho QH Natural history In symbiotic copepods, most naupliar stages are typically planktonic, playing a primary role in dispersal, while the first copepodid usually represents the infective stage. Later copepodid stages, including adults, are associated with host organisms. Many symbiotic copepods have abbreviated life cycles, with a reduced number of naupliar stages and two different feeding habits. These patterns are presumably related to distinct life cycles strategies. Exceptional cases are exemplified by members of the Monstrillidae and Thaumatopsyllidae, both of which are protelean parasites, with infective nauplii and nonfeeding planktonic adults. In the Caligidae, the life cycle follows a generalized pattern, but adults of many species like Caligus undulatus seem to exhibit a dual mode of life involving host switching. Adults leaving the first host become temporarily planktonic before attaching to the final host. This dual mode of life is also found in adults of the Ergasilidae. Abbreviation of the planktonic phase is characteristic for some symbiotic taxa, thus suggesting that they have evolved to become highly efficient in locating and infecting new hosts without needing long-distance larval dispersal. The life cycle of copepods associated with zooplankters is also briefly reviewed. Zooplankters are clearly less used as hosts by copepods than benthic invertebrates. It is likely that symbiotic copepods dynamically utilize planktonic phases in their life cycle, thus maintaining the balance between dispersal, host location, reproduction, and predator-avoidance strategies. 2018-08-01 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/22724/1/Planktonic%20Phases%20in%20Symbiotic%20Copepods.pdf Susumu Ohtsuka and Ione Madinabeitia and Hirofumi Yamashita and B. A. Venmathi Maran and Eduardo Suárez-Morales and Ju-shey Ho (2018) Planktonic Phases in Symbiotic Copepods: a Review. Bulletin, Southern California Academy of Sciences, 117 (2). pp. 104-119. https://doi.org/10.3160/3616.1
spellingShingle QH Natural history
Susumu Ohtsuka
Ione Madinabeitia
Hirofumi Yamashita
B. A. Venmathi Maran
Eduardo Suárez-Morales
Ju-shey Ho
Planktonic Phases in Symbiotic Copepods: a Review
title Planktonic Phases in Symbiotic Copepods: a Review
title_full Planktonic Phases in Symbiotic Copepods: a Review
title_fullStr Planktonic Phases in Symbiotic Copepods: a Review
title_full_unstemmed Planktonic Phases in Symbiotic Copepods: a Review
title_short Planktonic Phases in Symbiotic Copepods: a Review
title_sort planktonic phases in symbiotic copepods a review
topic QH Natural history
url https://eprints.ums.edu.my/id/eprint/22724/1/Planktonic%20Phases%20in%20Symbiotic%20Copepods.pdf
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