Geographical variability and parasitism on body size, reproduction and shell characteristics of the keyhole limpet Fissurella crassa (Mollusca: Vetigastropoda)

García-Huidobro, M. Roberto; Aldana, Marcela; Varas, Oscar; Pulgar, José; García‐Herrera, Claudio; Abarca‐Ortega, Aldo; Grenier, Christian; Rodríguez‐Navarro, Alejandro B.; Lagos, Nelson A.

doi:10.1016/j.marenvres.2020.105060

Cited by 5 publications

(12 citation statements)

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“…Variations in the thickness of the mollusks periostracum and in the amount of organic chemical composition have been reported in response to the food availability, pH, salinity and parasitism (Ramajo et al 2016;García-Huidobro et al 2020). There are no similar studies for the sister taxon Exolaternula which shown temperate and tropical distribution (Taylor et al 2018), which avoid a comparative analysis.…”

Section: Discussionmentioning

confidence: 99%

“…Attenuated Total Reflection-Fourier Transform Infrared spectroscopy (ATR-FTIR) was used to analyze the organic composition of L. elliptica shells surfaces (e.g., Ramajo et al 2016Ramajo et al , 2020Checa et al 2019;García-Huidobro et al 2020). For ATR-FTIR analysis, small shell pieces were collected from the shell edge and umbo sections (n = 16 individuals).…”

Section: Shell Organic Compositionmentioning

confidence: 99%

“…One of the aspects of L. elliptica and other Antarctic mollusks that are not receiving adequate attention are those to the structure and functionality of the protective shell, in particular to the organic shell matrix that reinforces and improves shell mechanical properties (see Savazzi 1990). In mollusks, shell construction through calcification is a costly energy process (Palmer 1992), associated with protection against predators, wave action, and other environmental factors (e.g., temperature and ocean acidification) (e.g., Ramajo et al 2015Ramajo et al , 2016Lagos et al 2016;Benítez et al 2018;García-Huidobro et al 2020).…”

Section: Introducionmentioning

confidence: 99%

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An intrapopulational study of organic compounds and biomechanical properties of the shell of the Antarctic bivalve Laternula elliptica (P. P. King, 1832) at King George Island

et al. 2021

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Laternula elliptica is a key bivalve species and widely distributed around the Antarctic continent. This bivalve has been the study subject in several studies centered on ecological, physiological, biochemical, and behavioral patterns. However, little is known about the chemistry and the biomechanical properties of the shells of this mollusk. Here, we present the first report of the intra-population variability in the organic composition and mechanical properties of L. elliptica shells. Further, we analyze different morphological traits and their association with the metabolism of a population of L. elliptica from King George Island, Western Antarctic Peninsula. The summer metabolic rates and the hepatosomatic index values indicate good health conditions of this clam's population. Shell periostracum chemistry is quite similar to bivalves from temperate regions, but the relative amount of protein increased ca. five-fold in shells of L. elliptica. The microhardness is approximately 32% lower than in bivalves from temperate regions. Our characterization of the L. elliptica shells suggests that periostracum chemistry could be specially fitted to avoid shell carbon exposure to dissolution (e.g., in corrosive acidified seawater). In contrast, the reduction in shell hardness may result from prioritizing behavioral (burial) and shell repairing strategies to confront biological (predators) and physical disturbances (e.g., ice scouring). Similar studies in other Antarctic mollusks will help understand the role of shell structure and function in confronting projected climate changes in the Antarctic ocean.

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Section: Discussionmentioning

confidence: 99%

Section: Shell Organic Compositionmentioning

confidence: 99%

Section: Introducionmentioning

confidence: 99%

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An intrapopulational study of organic compounds and biomechanical properties of the shell of the Antarctic bivalve Laternula elliptica (P. P. King, 1832) at King George Island

et al. 2021

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“…In this study, we examined the histology, biochemistry, and sex hormone levels in the female gonads of Fissurella crassa, a limpet species parasitized by the digenean Proctoeces humboldti in the metacercaria stage. This host-parasite system is one of the most extensively studied systems on the eastern Pacific coast, in which previous research has demonstrated greater gonadal biomass of parasitized limpets compared to non-parasitized ones (Aldana et al, 2014;Aldana et al, 2020;Garcıá-Huidobro et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies on Proctoeces humboldti have suggested a positive effect of the parasite on its host Fissurella crassa (Aldana et al, 2014;Aldana et al, 2020;Garcıá-Huidobro et al, 2020). Parasitized individuals show larger shell length, muscle foot biomass, and gonadosomatic index (GSI) compared to nonparasitized individuals (Aldana et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Host-parasite dialogue: fecundity compensation mechanisms of Fissurella crassa

García-Huidobro,

Reyes,

Fuentes

et al. 2024

Front. Mar. Sci.

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Parasites can alter the reproductive performance of their hosts, and to avoid or mitigate the resulting fitness loss, hosts may increase their current reproductive output to compensate for the future loss due to the parasitic infection. Fecundity compensation can be exploited by parasites for their own transmission (exploitation of host compensatory responses by parasites). However, this phenomenon has rarely been reported in second intermediate hosts of trematodes and its mechanisms and consequences largely unexplored. Along the east coast of the South Pacific, the second intermediate host, the mollusk Fissurella crassa, has been observed to display higher muscular foot, greater shell length and weight, and a higher gonadosomatic index when parasitized by metacercariaes of Proctoeces humboldti compared to non-parasitized hosts. In this study, we examined the histology, biochemistry (glucose, lipids, and proteins), and levels of sex hormones (estradiol and progesterone) in both parasitized and non-parasitized female individuals of F. crassa. Our findings revealed that the gonad of parasitized limpets had a higher density of oocytes, but these had a smaller individual area. Additionally, the gonadal tissue of parasitized limpets exhibited lower glucose content but higher lipid content. Notably, the levels of progesterone increased with parasite intensity. These results suggest that F. crassa possesses the ability to compensate for the negative effects of parasites by increasing the number of oocytes through biochemical and hormonal mechanisms. Our study contributes to the limited research on the impact of metacercariae on the reproduction of second intermediate hosts. Furthermore, we discuss how these changes in parasitized limpets could benefit parasite transmission.

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Morphological, physiological and behavioral responses of an intertidal snail, Acanthina monodon (Pallas), to projected ocean acidification and cooling water conditions in upwelling ecosystems

Duarte

Jahnsen-Guzmán

Quijón

et al. 2022

Environmental Pollution

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Geographical variability and parasitism on body size, reproduction and shell characteristics of the keyhole limpet Fissurella crassa (Mollusca: Vetigastropoda)

Cited by 5 publications

References 100 publications

An intrapopulational study of organic compounds and biomechanical properties of the shell of the Antarctic bivalve Laternula elliptica (P. P. King, 1832) at King George Island

An intrapopulational study of organic compounds and biomechanical properties of the shell of the Antarctic bivalve Laternula elliptica (P. P. King, 1832) at King George Island

Host-parasite dialogue: fecundity compensation mechanisms of Fissurella crassa

Morphological, physiological and behavioral responses of an intertidal snail, Acanthina monodon (Pallas), to projected ocean acidification and cooling water conditions in upwelling ecosystems

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