Victor Mauricio Cubillos

Victor Mauricio Cubillos
Universidad Austral de Chile · Instituto de Ciencias Marinas y Limnológicas UACh - Laboratorio Costero de Recursos Acuaticos de Calfuco

Marine Biologist , Ph.D. in Marine Sciences

About

44
Publications
5,213
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Citations
Introduction
Victor Mauricio Cubillos currently works at the Instituto de Ciencias Marinas y Limnológicas UACh - Laboratorio Costero de Recursos Acuaticos de Calfuco, Universidad Austral de Chile. Victor does research in Ecology, Marine Biology and Developmental Biology. Their current project is '(FONDECYT 1190875) Cellular, physiological and behavioral response in the estuarine anemone Anthopleura hermaphroditica: complementary strategies to address hypo-saline periods'.
Additional affiliations
September 2014 - present
Universidad Austral de Chile
Position
  • Academic
May 2008 - May 2011
University of Otago
Position
  • PhD

Publications

Publications (44)
Article
Full-text available
Anthopleura hermaphroditica is an intertidal anemone that lives semi-buried in soft sediments of estuaries and releases its brooded embryos directly to the benthos, being exposed to potentially detrimental ultraviolet radiation (UVR) levels. In this study, we investigated how experimental radiation (PAR: photosynthetically active radiation; UVA: ul...
Article
Intracapsular embryonic development in the intertidal zone exposes embryos to various stress sources characteristic of this environment, including UV-R. They require defensive mechanisms to mitigate its adverse effects. The presence of total carotenoids (TC), and mycosporine-like amino acids (MAAs) was studied in adults, in encapsulated embryos, an...
Article
Full-text available
The muricid gastropod Acanthina monodon deposits egg capsules in both subtidal and intertidal environments. Intertidal egg capsules are naturally exposed during low tides to sublethal environmental stressors, including desiccation and fluctuations in temperature and salinity. This study was undertaken to determine if juveniles hatching from interti...
Article
The ability to use oxygen from both air and water has been considered key to the colonization of terrestrial environments by invertebrates. The freshwater gastropod Pomacea figulina generally lives submerged, although females lay their eggs mainly above water during nighttime, on the stems of aquatic plants, and the embryos develop inside the air-e...
Article
Intertidal animals experience reduced feeding times and differentiated respiratory capacity associated with aerial exposure, the duration of which depends on their location within the intertidal zone. Perumytilus purpuratus is a sessile mussel that forms dense mats in the rocky mid-intertidal in southern Chile. For this species, we documented the i...
Article
Encapsulated development with extraembryonic yolk may lead to competition for nutrients within egg capsules. In this research, different degrees of competition among embryos in subtidal egg capsules of Acanthina monodon resulted in considerable differences in hatching size. For newly hatched juveniles, individuals hatching from less crowded egg cap...
Article
The dinoflagellate family Symbiodiniaceae comprises numerous genera and species with large differences in diversity, ecology and geographic distribution. An evolutionarily divergent lineage common in temperate symbiotic cnidarians and designated in the literature by several informal names including ‘temperate–A’, AI, Phylotype A´ (A-prime) and ‘Med...
Article
Free-living, planktonic larvae can be vulnerable to capture and ingestion by adult suspension-feeders. This is particularly the case for larvae that settle gregariously in benthic environments where suspension-feeders occur at high densities. Larvae of gregarious suspension-feeding species are at particularly high risk, as adults of their own speci...
Article
Anthropogenic CO 2 emissions have led to ocean acidification and a rise in the temperature. The present study evaluates the effects of temperature (10, 15 and 20 • C) and pCO 2 (400 and 1200 μatm) on the early development and oxygen consumption rate (OCR) of the sea louse Caligus rogercresseyi. Only temperature has an effect on the hatching and dev...
Conference Paper
Full-text available
Oceanósfera es una Fundación sin fines de lucro cuya misión es educar e inspirar a las personas, especialmente a las niñas y a los niños, a cuidar, respetar y conservar nuestros océanos y su biodiversidad. Nuestro objetivo es generar espacios donde se promueva la interacción entre las personas, el océano y las especies marinas. Desde nuestra fundac...
Article
Acanthina monodon commonly deposits its egg capsules in the intertidal zone. Capsule aerial exposure during low-tide can impact oxygen consumption rates (OCR) of embryos and intracapsular oxygen availability, and expose embryos to desiccation. OCR increased as embryonic development progressed, and was greater when capsules were submerged in seawate...
Article
Full-text available
Among calyptraeid gastropods, males become females as they get older, and egg capsules containing developing embryos are maintained beneath the mother's shell until the encapsulated embryos hatch. Crepipatella dilatata is an interesting biological model considering that is an estuarine species and thus periodically exposed to elevated environment-p...
Article
Full-text available
Species of the genus Ulva (Chlorophyta) are regarded as opportunistic organisms, which efficiently adjust their metabolism to the prevailing environmental conditions. In this study changes in chlorophyll‐a fluorescence‐based photoinhibition of photosynthesis, electron transport rates, photosynthetic pigments, lipid peroxidation, total phenolic comp...
Article
Full-text available
Flat oysters brood their embryos and larvae in the female pallial cavity, and the previous work has examined their relationship to the gill/mouth complex. However, the details of this relationship are unclear. By transplanting embryos and using endoscopy, the capacity for embryonic recognition in brooding oysters, Ostrea chilensis, and the ability...
Article
Full-text available
The brooding gastropod Crepipatella dilatata can feed by scraping the substrate with the radula and by suspension-feeding, which also requires use of the radula. There is a “division of labour” for the radula among three discrete tasks associated with feeding: (1) removing mucous balls from the food pouch; (2) transferring the mucous cord from the...
Article
Full-text available
Encapsulated development in the intertidal environment can potentially expose developing embryos to environmental stresses, particularly during low tides. Such stresses can affect juvenile performance after hatching. Capsules-containing advanced pre-hatching stages of the snail Acanthina monodon were collected during July–August 2017 from rocks in...
Article
Encapsulated development in the intertidal environment can potentially expose developing embryos to environmental stresses, particularly during low tides. Such stresses can afect juvenile performance after hatching. Capsules-containing advanced pre-hatching stages of the snail Acanthina monodon were collected during July–August 2017 from rocks in t...
Article
Full-text available
One of the pathogens causing the highest economic impacts on the Chilean salmon industry is the ectoparasite copepod Caligus rogercresseyi, whose abundance is strongly influenced by environmental variables (e.g. salinity and temperature). Infested fish with sea lice reduces appetite, food-conversion efficiency and increase stress level, which resul...
Article
Desiccation is an important limiting factor in the intertidal zone. Generally decreasing seaward, desiccation stress can also be alleviated in wet microhabitats. Juvenile snails are generally more susceptible to desiccation than adults, and, for some species, juveniles must therefore hide in microhabitats to survive emersion. The transition from hi...
Article
Full-text available
Intertidal macroalgae are constantly subjected to high variations in the quality and quantity of incident irradiance that can eventually generate detrimental effect on the photosynthetic apparatus. The success of these organisms to colonize the stressful coastal habitat is mainly associated with the complexity of their morphological structures and...
Article
Full-text available
Females of the gastropod Crepipatella dilatata brood their egg capsules in the pallial cavity under the shell for several weeks until the offspring hatch as juveniles-but at what cost? In estuaries, brooding females clamp tightly to the substrate during periods of low salinity (<22 psu), isolating the pallial cavity from the outside environment and...
Article
Full-text available
Intertidal environments experience low salinity during heavy rainfall, creating stressful conditions for organisms, including invertebrate pelagic larvae, which can affect post-metamorphic development. Salinity in tide pools was monitored at low tide during a rainfall event in November 2013 at Puerto Montt, southern Chile. Water samples were taken...
Article
Unlike lamellibranch bivalves, suspensionfeeding calyptraeid gastropods lack siphons and paired shell valves to regulate water inflow. This study was designed to determine if calyptraeid gastropods use the solid surface to which they attach to facilitate food particle capture. Juveniles of both Crepidula fornicata and Crepipatella peruviana were ma...
Article
Full-text available
Organisms that encounter stressful situations in nature often cope using behavioral (e.g., avoidance) or physiological tactics. In sessile mollusks, the only available behavioral option in dealing with salinity stress is to "clam up", isolating their tissues from the environment. Though effective in the short term, prolonged isolation can have detr...
Article
Although periods of severely reduced oxygen concentration are occurring with increasing frequency in coastal marine ecosystems, the effects of such exposures on early development have not been extensively explored. Brooding females of the gastropod Crepipatella dilatata expose their embryos to such hypoxic conditions (< 1 mg O-2 l(-1)) naturally du...
Article
Shallow-water coastal environments suffer frequent reductions in salinity due to heavy rains. This creates stressful conditions for the organisms found there, particularly for the early stages of development, including pelagic larvae. Freshly hatched larvae of the gastropod Crepipatella fecunda were exposed to different levels of salinity stress (3...
Article
To assess the relative importance of long- and short-term cellular defence mechanisms in seasonally UV-R acclimated Actinia tenebrosa (Anthozoa, Actiniidae), individuals were exposed to summer doses of PAR, UV-A, UV-B and enhanced UV-B (20%) for a period of 4 days. Mycosporine-like amino acids (MAAs) and cyclobutane pyrimidine dimer (CPD) concentra...
Article
At reduced salinities, brooding females of some gastropods and bivalves may isolate their mantle cavities from the environment for several days, maintaining internal osmotic concentration but causing severe declines in dissolved oxygen and pH, and increases in ammonia and other toxic substances in the mantle fluid. This study in November–December e...
Article
Trematode parasites are integral components of intertidal ecosystems which experience high levels of ultraviolet radiation. Although these parasites mostly live within hosts, their life cycle involves free-living larval transmission stages such as cercariae which are directly exposed to ambient conditions. UV has previously been shown to considerab...
Article
Crepipatella dilatata is an estuarine gastropod that broods its encapsulated embryos in the pallial cavity for several weeks before releasing juveniles. When environmental quality declines (e.g., in response to decreased salinity), females seal themselves against the substrate and isolate the pallial cavity from surrounding seawater, altering the c...
Article
Semelparity is one of the most drastic reproductive strategies found among marine invertebrates. It is frequently found in species whose members have small adult sizes and brood embryos internally. In this study, we describe the reproductive strategy of the bivalve Gaimardia bahamondei to explore the possible causes of the association between semel...
Article
Full-text available
The sedentary gastropod Crepipatella dilatata encapsulates its embryos and incubates them in the pallial cavity. Females Can deliberately isolate their embryos from the external environment for many hours at a time by pressing their shells tightly against the substrate. We documented the effects of such isolation on pH in the pallial cavity and the...
Article
During their reproductive period, females of Crepipatella dilatata deposit their embryos in capsules that they then brood in the pallial cavity until juveniles emerge several weeks later, after passing through a transient veliger “larval” stage. Artificially excapsulated veligers of this species experimentally exposed to a wide range of salinities...
Article
A number of marine bivalve taxa, including species of the genus Ostrea, have adopted brooding of the young in the mantle cavity as a reproductive mechanism. In spite of the importance of brooding in the reproductive success of such species, little is known about the most important variables influencing the process, including those limiting clutch s...
Article
The suspension-feeding gastropod Crepipatella dilatata occurs in estuaries in southern Chile that experience considerable fluctuations in salinity, driven by tidal and atmospheric forces. In the Quempillén estuary salinities as low as 9 psu may occur after severe rainstorms, and persist for several hours. In this study salinity was the major factor...
Article
Full-text available
Embryonic cannibalism has been identified in directly developing calyptraeid species through observa-tion of the ingestion of encapsulated sibling embryos. The object of the present study was to determine the effects of experimentally induced cannibalism on larval development in encapsulated larvae of Crepipatella fecunda (a species having mixed de...
Article
Embryos of Crepidula dilatata develop within egg capsules where they feed on nutritive eggs also deposited within the capsules. Nutritive eggs permit the embryos to develop to a juvenile stage at hatching without passing through a pelagic larval phase. The juveniles enter the local population in posession of a well developed radula and gill filamen...

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Projects

Projects (3)
Project
Desarrollar una guía informativa y de identificación de animales marinos: “Fauna Marina Amenazada y Protegida del sur de Chile”, combinando la educación, las ciencias, artes y cultura, con el fin de enseñarle a la comunidad la diversidad de animales que viven en nuestras costas y aquellas que tienen problemas de conservación, e incentivando la interacción entre la Universidad y comunidades regionales.
Project
To understand cellular, physiological and behavioral strategies that the estuarine symbiotic anemone A. hermaphroditica use to adress salinity fluctuations in a mid-latitude estuary. It is important to indicate that during winter, prolonged precipitations can reduce salinity levels in the Quempillen´s estuary up to 7 PPT, remaining in that condition for the next 72-96 hours. Therefore, it is important to understand if burrowing behavior in the sediment, the use of compatible organic osmolites (COOs), DMSP and other secondary metabolites are effective resources to minimize cellular damage by osmotic stress. Understanding what happends in the gastro-vascular cavity (coelenteron) in terms of free aminoacids as a mechanism to regulate the flux of water when the outter environment changes drastically in a short period of time (1 hour). Reproductively, this anemone broods its larva and embryos at the gastrovascular cavity where the internal condition can change when the anemone isolate itself from the surrounding environment. Therefore, the adult brooding embryos must develop effective strategies that minimize the risk of damage to embryos. Zooxanthellae expulsion and re-infestation in adults and embryos of A. hermaphroditica are included as responses to osmotic stress.
Archived project
Environmental radiation (PAR and UV-R) can generate high levels of macromolecular damage, particularly in intertidal organism if low tide periods are coincident with maximum radiation peak occurring at midday. Consequently, direct and indirect UV-B absorption can cause DNA mutations (CPD) and oxidative damage (lipids, proteins and DNA) respectively, a situation that can be enhanced if those organisms show a sessile condition in addition to a complete lack of external physical protection. Anthopleura hermaphroditica is a sessile sea anemone that lives half buried in the fine sediment in estuaries and sheltered bays in southern Chile having the capacity to brood their embryos in their gastro-vascular cavity. Considering the burial capacity in addition to the symbiotic condition of A. hermaphroditica with zooxanthellae microalgae, makes of this organism an interesting model to understand whether temporal variations of UV-B and PAR (400 - 700 nm) radiation can affect balance photo-protection / photo-damage in adults, brooded embryos and recently hatched juvenile of this sea anemone.