The Formation and Structure of the Glochidial Cyst

Arey, Leslie B.

doi:10.2307/1537553

Cited by 46 publications

(41 citation statements)

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“…Although earlier reports attributed encapsulation to either hyperplasia or cell movements (Lefevre & Curtis 1910, Young 1911, Arey 1932b, our results indicated that cell proliferation, transformation, and pseudopodial extension all contributed to capsule formation. Glochidia were initially surrounded by elongate cells, and later thickening and compaction of the capsule seemed to result from hyperplasia, cellular transformation, and cell migration.…”

Section: Discussioncontrasting

confidence: 95%

“…Liberation of juvenile mussels from walleyes followed thinning of the capsule wall. As suggested by Arey (1932b), thin areas of capsules may be broken by expansion of the mussels valves and protrusion of the foot. Arey also suggested that gross sloughing of capsular cells and reverse migration of cells contribute to juvenile release; we saw no evidence of these processes.…”

Section: Discussionmentioning

confidence: 94%

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Gill tissue reactions in walleye Stizostedion Vitreum vitreum and common carp Cyprinus carpio to glochidia of the freshwater mussel Lampsilis radiata siliquoidea

Waller¹,

Mitchell²

1989

Dis. Aquat. Org.

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Section: Discussioncontrasting

confidence: 95%

Section: Discussionmentioning

confidence: 94%

Gill tissue reactions in walleye Stizostedion Vitreum vitreum and common carp Cyprinus carpio to glochidia of the freshwater mussel Lampsilis radiata siliquoidea

Waller¹,

Mitchell²

1989

Dis. Aquat. Org.

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“…Premature shedding of live and dead glochidia from resistant and naive fish was observed in this study and is common [17,38]. This shedding may be due to necrosis or sloughing of the cyst [4,5]. Additionally, the encapsulation of glochidia by the skin epithelium of the fish is temporally delayed and morphologically irregular on resistant hosts [39].…”

Section: Discussionmentioning

confidence: 61%

“…The timing and extent of cyst formation differ in primed and naive fish and these differences may contribute to acquired resistance [4,5,12]. Several studies have reported ''anti-glochidia factors'' (presumably antibodies) in the serum of infected host fish [7,10,16].…”

Section: Introductionmentioning

confidence: 99%

Persistence of host response against glochidia larvae in Micropterus salmoides

Dodd

Barnhart

Rogers-Lowery

et al. 2006

Fish & Shellfish Immunology

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“…A. trapesialis fits into this scenario characterised as a temporary parasite (Bonetto and Ezcurra, 1962) and most often forms a cyst on the tissue, which does not cause severe lesion to the hosts (Silva-Souza and Eiras, 2002). This relation was described by Arey (1932) and Murphy (1942) as a nutrition relation between the larvae and the degeneration of the host tissue, which is the source of nutrients during metamorphosis. There is a wide gap of information regarding the hostparasite relationship in unioniods: almost nothing is known about the infection of fish and the parasite-host relation in the Neotropical region (Silva-Souza and Eiras, 2002;Callil and Mansur, 2007) and little is available with this approach in the world (Hoggarth, 1992;Strayer, 2008).…”

Section: Discussionmentioning

confidence: 99%

Variations on the larval incubation of Anodontites trapesialis (Unionoida, Mycetopodidae): Synergetic effect of the environmental factors and host availability

Krinski

Silva

2012

Braz. J. Biol.

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The unionid Anodontites trapesilais (Lamarck, 1819) like most freshwater mussels is a parasite of fish. So it is trivial to assume that the availability of hosts is an important factor for the maintenance of unionoid populations. What seems obvious is not always so easy to demonstrate. This study proposes to investigate the effects of abiotic and biotic variables related to the incubation of larvae in A. trapesialis. For this, we estimate different biological indexes and try to capture the dimensionality of the fish, along with the temporal variation of environmental variables. From the application of a CCA, it was demonstrated that there was a synchronicity among the factors and variables proposed here, and we infer that the flood pulse acts as a synergistic factor in this process.Keywords: reproduction, freshwater mussels, fishes, host relationship, wetlands. Variações na incubação larval de IntrodutionUnionoida mussels have a complex life cycle. After fertilization, the early stages of development occur in the inner demibranch (Bonetto and Ezcurra, 1962;1965). The planktonic larvae, called glochidium or lasidium, complete their development cycle as temporary parasites of fish (Fryer, 1970, Mansur et al., 1987. Around 27 days after fixation, they complete metamorphosis and unfasten themselves from the fish and become a benthic organism (Bonetto and Ezcurra, 1962;Castellanos and Landoni, 1990).Some limiting factors such as temperature (Bauer, 2000;Strayer, 2008;Oliveira et al. 2010), food availability and parasite-host interaction, influences directly in the reproductive dynamics of these mussels (Haag and Warren-Junior, 1997;Avelar and Mendonça, 1998;Beasley et al., 2000). To know which environmental factors are most important to each one of the reproduction attributes will depend on the combined effect provided by the environment in which these bivalves occur (Galbraith and Vaughn, 2009). Few studies have examined the environmental influences in the reproductive dynamics of the population and information is unknown related to the incubation period, elimination of larvae and parasite-host interaction for neotropical species.Anodontites trapesialis (Lamarck, 1819) (Unionoida, Mycetopodidae) is widely geographically distributed and may represent the highest percentage of benthic biomass in rivers, lakes and flood plains (Colle and Callil, 2012). Although on the national list of endangered species, (Brasil, 2004), this species can be found in abundance in farm ponds and fish farming (Guardia-Felipi and Silva-Souza, 2008) and has been considered a species for cultivation and potential source of protein (Tello-Panduro et al., 2003). However being sedentary and excellent filter feeders it has been used as a sentinel organism (Callil, 2003) for studies of environmental monitoring and an effective biomarker of pesticides (Lopes et al., 1992) and heavy metals like mercury (Callil and Junk 1999, 2000), lead and cadmium (Tomazelli et al., 2003).In order to understand the processes related to the larval developme...

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The Formation and Structure of the Glochidial Cyst

Cited by 46 publications

References 5 publications

Gill tissue reactions in walleye Stizostedion Vitreum vitreum and common carp Cyprinus carpio to glochidia of the freshwater mussel Lampsilis radiata siliquoidea

Gill tissue reactions in walleye Stizostedion Vitreum vitreum and common carp Cyprinus carpio to glochidia of the freshwater mussel Lampsilis radiata siliquoidea

Persistence of host response against glochidia larvae in Micropterus salmoides

Variations on the larval incubation of Anodontites trapesialis (Unionoida, Mycetopodidae): Synergetic effect of the environmental factors and host availability

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