Castrating effects of trematode larvae on the reproductive success of a highly parasitized population of Crepipatella dilatata (Caenogastropoda) in Argentina

Gilardoni, Carmen Mariangel; Ituarte, Cristián; Cremonte, Florencia

doi:10.1007/s00227-012-2011-9

Cited by 10 publications

(7 citation statements)

References 35 publications

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“…Given the body condition of parasitized limpets is up to half of the body condition of unparasitized individuals, we suspect infection of C. garthi reduces both, somatic and gonadal conditions. Lastly, it would be worthy studying if negative effects of this crab are translated into population‐level impacts in B. odites , such as reductions in recruitment rate and/or host fecundity compensation (i.e., increased investment in reproduction before infection/anticipated reproduction in smaller females; Ebert et al, 2004; Gilardoni et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Impact on reproductive performance and body condition in a small limpet parasitized by a large castrator pea crab

Ocampo

García

Núñez

et al. 2021

Journal of Morphology

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Parasitic castrators utilize the energy reserves that the host allocates on reproduction resulting in sterilization of the host. However, whether other processes (e.g., growth) are also impaired depends on the balance between the castrator's energy requirements and the available resources that the castrated host does not use in reproduction. We investigated whether the castrator pea crab Calytraeotheres garthi alters body condition, reproductive performance, and occurrence of copulation in its limpet host Bostrycapulus odites. For this purpose, we examined the anatomy of the ovary, the seminal receptacles, and the body condition of parasitized and unparasitized limpets. The histology of the female gonad of parasitized limpets revealed the ovarian tubules are smaller and characterized by a greater proportion of intertubular and intratubular free space compared with non‐parasitized individuals. The body condition of female limpets from all sizes (during summer) and those larger than ~16 mm (during spring and autumn) were impacted by the pea crab. These results are in contrast to that previously reported in the comparatively larger limpet species Crepidula cachimilla, in which the same pea crab species does not alter or even increase the host body weight. We concluded this pea crab species could drastically impair its host's reproduction and body condition although deleterious effects are species‐specific and likely depend on limpet body size. The histology of seminal receptacles revealed an uncommon disposition of spermatozoa (i.e., excessive debris and acrosomes detached from epithelium) in seminal receptacles of some parasitized limpets. However, this analysis failed to determine whether sperm derived from present matings or previous pea crab infection. Further studies are needed to address whether pea crabs interfere with the mating behavior of limpets and if the alterations in sperm disposition are a consequence of castration.

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Section: Discussionmentioning

confidence: 99%

Impact on reproductive performance and body condition in a small limpet parasitized by a large castrator pea crab

Ocampo

García

Núñez

et al. 2021

Journal of Morphology

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“…, ), although one related South American species ( Crepipatella dilatata ) does (Gilardoni et al. ). Moreover, many individuals of C. fornicata found in French waters are infected by the French shell borer Cliona celata , although the infestation does not appear to be harmful (Le Cam & Viard ).…”

Section: Discussionmentioning

confidence: 99%

“…As with all other calyptraeids, adults of C. fornicata are sedentary, so that different degrees of adult dispersal ability (Brousseau & McSweeney 2016) should also not be related to ecological invasion success. Some species become successful invasives by leaving behind their parasites (Torchin et al 2003); however, C. fornicata, C. plana, and C. convexa do not seem to serve as first host species for trematodes (Pechenik et al 2001(Pechenik et al , 2012, although one related South American species (Crepipatella dilatata) does (Gilardoni et al 2012). Moreover, many individuals of C. fornicata found in French waters are infected by the French shell borer Cliona celata, although the infestation does not appear to be harmful (Le Cam & Viard 2011).…”

Section: Discussionmentioning

confidence: 99%

Fecundity of the invasive marine gastropodCrepidula fornicatanear the current northern extreme of its range

Pechenik

Diederich

Browman

et al. 2017

Invertebrate Biology

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The calyptraeid gastropod Crepidula fornicata is native to the eastern coast of the United States but has now become an extremely successful invader along much of the European coastline. As the northern limit of its spread is thought to be determined by an inability of adults to tolerate prolonged exposure to low winter temperatures, this study sought to compare the fecundity of females collected from two sites along the Norwegian coastline with that of females collected from Rhode Island, USA. Few other studies have compared the fecundities of marine invertebrates from invasive populations with those found in native populations. For both populations studied, fecundities increased with increasing shell length. However, contrary to expectations, size‐related fecundities were significantly higher for Norwegian females than for Rhode Island females, with Norwegian females producing larger egg capsules and a greater number of embryos per capsule, but not a greater number of egg capsules per brood. Current evidence suggests that at the northern extreme of its invaded range, the fecundity of C. fornicata is increased rather than compromised.

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“…Parasitism is another factor that may affect recruitment and growth in snails (Lefcort et al, 2002;Gilardoni et al, 2012). Digeneans generally reduce reproductive success and can alter the growth rate of their hosts.…”

Section: Discussionmentioning

confidence: 99%

Long-term study of the life cycle of the freshwater snail Heleobia parchappii (Mollusca: Cochliopidae) in a lentic environment in Argentina

Merlo¹,

Parietti²,

Etchegoin³

2016

Limnetica

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Long-term study of the life cycle of the freshwater snail Heleobia parchappii (Mollusca: Cochliopidae) in a lentic environment in ArgentinaThe gastropod Heleobia parchappii is distributed in lentic and lotic environments in the Pampas region of Argentina and is a host for at least 24 species of digeneans. Because ecoparasitological investigations of snail-digenean associations frequently lack knowledge of the structure and dynamics of the snail host population, the purpose of this study is a long-term analysis of the basic aspects of the H. parchappii life cycle as a preliminary step of an environmental parasitology study. Monthly collections were made in Nahuel Rucá Lagoon from August 2010 to February 2013, and a total of 24 931 individuals of H. parchappii were measured and size-frequency distributions were constructed. The von Bertalanffy growth equation and the von Bertalanffy equation with seasonal oscillation growth equations were fit to shell length data. The size-frequency distributions of H. parchappii fit a polymodal distribution, and 14 age classes were identified. The breeding periods of H. parchappii in 2011 were in summer (February and March), autumn (June) and spring (October). However, in 2012 the periods of recruitment were in autumn (May), winter (July) and spring (October). The von Bertalanffy models best fit the data, and the likelihood ratio test comparison showed significant differences in the estimated parameters between cohorts. This is the first study in which three cohorts of H. parchappii were followed from recruitment until death, and a life cycle of approximately 20.33 months was estimated. The observed differences in the recruitment periods and growth parameters could be a strategy by the snail to prevent the negative effects on reproductive success caused by digeneans. We suggest that long-term studies that include a larger number of environmental and biological factors are needed to fully understand the dynamics of the recruitment and growth of juveniles of this species across its distribution range.

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Castrating effects of trematode larvae on the reproductive success of a highly parasitized population of Crepipatella dilatata (Caenogastropoda) in Argentina

Cited by 10 publications

References 35 publications

Impact on reproductive performance and body condition in a small limpet parasitized by a large castrator pea crab

Impact on reproductive performance and body condition in a small limpet parasitized by a large castrator pea crab

Fecundity of the invasive marine gastropodCrepidula fornicatanear the current northern extreme of its range

Long-term study of the life cycle of the freshwater snail Heleobia parchappii (Mollusca: Cochliopidae) in a lentic environment in Argentina

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