Laura López Greco

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• PhD
• Professor (Associate) at University of Buenos Aires

Ovigerous females of the freshwater shrimp Macrobrachium borellii were exposed to three sublethal concentrations (0.01, 0.1, and 1 mg/L) of diclofenac sodium salt, for 74 d, in order to measure several variables related to both reproductive success and oxidative stress. Although no differences (p > 0.05) were noted in either the egg incubation time...

Context Macrobrachium vollenhoveni (Herklots), a freshwater prawn native to Africa, is crucial for aquaculture and subsistence fishing. However, limited data exist on its reproductive biology in Benin’s water bodies. Aims This research aimed to explore the breeding season, size at sexual maturity, fecundity and reproductive output of M. vollenhoven...

Understanding the nutritional and metabolic physiology of aquatic organisms is essential for optimizing aquaculture practices and informing ecological models. We investigated the influence of dietary composition, specifically the incorporation of multienzyme extract derived from Pleoticus muelleri waste, on the growth and metabolic processes of juv...

Carcinus maenas es uno de los invasores más extendidos a nivel mundial. En el Golfo Nuevo, Patagonia Argentina, se ha reportado desde el 2016 y actualmente es comercializado de manera artesanal por parte de la población local. Estudios previos han reportado la presencia de microplásticos (MPs) en la especie; esto lo convierte en una potencial vía d...

Shrimps of the genus Synalpheus (Caridea) are commonly found in subtropical and tropical marine habitats around the world. The present work aims to provide the first description of the reproductive system of this genus using histological, histochemical, and morphological perspectives to elucidate the gonochoric or hermaphrodite sexual system in thi...

Fuel spills in marine environments pose significant threats to aquatic ecosystems, evidencing the intricate relationship between fuel utilization and its impact on benthic species of commercial value for human consumption. This interconnectedness of human, animal and environmental welfare falls within the One Health framework. The aim of the presen...

The present work was aimed at evaluating whether females of a freshwater shrimp, Neocaridina davidi (Bouvier, 1904), allocate differentially to reproduction when reared in the presence of males and in the presence of brothers/non-brothers. Ovarian growth was evaluated in three consecutive maturation cycles. The composition of biochemical reserves w...

The gut microbial communities interact with the host immunity and physiological functions. In this study, we investigated the bacterial composition in Litopenaeus vannamei shrimp’s gut and rearing water under different host (developmental stage: juvenile and adult; health status: healthy and diseased) and environmental factors (temperature 25 °C an...

Anthropogenic noise in marine and freshwater environments has increased dramatically, with a range of negative impacts and detrimental consequences on many aquatic animals across taxa. Benthic organisms, including many invertebrates, can sense underwater sounds, yet the responses they trigger in these organisms have received little attention. We co...

Presencia de microplásticos en Carcinus maneas (Linneaus, 1758; Decapoda; Crustacea).

Male decapod reproduction involves gametogenesis, spermatozoa packaging in spermatophores, changes in cheliped´s growth, and specific behaviors such as courtship, male-male agoniztic interactions, and territory defense. These reproductive-related morpho-functional processes are supported by feed, one of the higher operative costs in aquaculture. Th...

Astaxanthin (Axn) is the primary pigment molecule in crustaceans associated with quality, health and growth traits, leading to increased marketing value. Axn can be contained within the protein complex crustacyanin (CRCN) to produce an array of different shell colours, or esterified with fatty acids (FA) for storage but also contributing additional...

Desde la Segunda Guerra Mundial hasta 2015 se han producido en el mundo 7300 MMT de plásticos que actualmente continúan en el medio ambiente. Aunque la gran mayoría de los residuos plásticos en el océano parecen originarse en tierra, los usos de los plásticos en el mar también generan residuos. Los plásticos de las artes de pesca (por ejemplo, los...

En las últimas décadas, a partir del crecimiento de la población humana, la contaminación por plásticos se ha incrementado exponencialmente, y así también los desechos que terminan en el mar. Los microplásticos (MPs) son estructuras sólidas, sintéticas o de matriz polimérica de forma regular o irregular que oscilan entre 1 µm y 5 mm; producidos por...

The current study was aimed at studying the long-term effects of diclofenac on the freshwater shrimp Neocaridina davidi, concerning survival, somatic growth, and reproduction. In this study, both ovigerous females and males of this species were exposed for 63 d to 0 (control), 0.1, or 1 mg/L of diclofenac. At the highest concentration, significant...

Macrobrachium macrobrachion is an African native brackish river prawn with a high commercial value. Currently, there is little information on the post-larval production of this species. Two experiments were conducted in the laboratory to develop production techniques for this species. The first experiment analyzed the duration of yolk resorption an...

Sound-generating human activities have considerably increased ambient noise levels in marine and freshwater ecosystems across the globe. Anthropogenic, human-made noise is an issue of international concern and rising in ambient sound levels may have negative consequences on aquatic animals at the individual and community level. Anthropogenic noise...

El Consejo Superior de Investigaciones Científicas (CSIC) es el mayor organismo público de investigación en España y el tercero en Europa. Tiene como misión el fomento, la coordinación, el desarrollo y la difusión de la investigación científica y tecnológica de carácter multidisciplinar. Su fin último es contribuir al avance del conocimiento y al d...

The southern king crab, Lithodes santolla, constitutes one of the most important fishery resources in the Beagle Channel. In this study, we considered that Lithodes santolla females showing better physiological conditions may produce larvae with higher survival rates. To determine whether this quality may be useful for the enhancement of natural cr...

Heterotrophic bacterial activity generates a load of total suspended solids (TSS) in biofloc systems (BF). This accumulation affects animal health and product quality in terms of the gills blocked function and flesh off-flavor, but TSS elimination causes a sudden change in microbial composition and nutrients concentration, leading to a decreased ni...

This work aimed to evaluate the effects of dietary phytic acid on the enzymatic activities of the hepatopancreas of the redclaw crayfish, Cherax quadricarinatus. For this purpose, a completely randomized in vitro trial was conducted with three phytic acid levels (0.56, 1.68, and 2.80%) and three phytase doses (0, 250, and 500 PU/kg DM). Solubilized...

La dieta y los hábitos alimentarios de una especie determinan su ubicación dentro de una red trófica y definen su rol ecológico. De esta manera, también representan un mecanismo clave en la estructuración y mantenimiento de la estabilidad de las comunidades. En el caso particular de la familia Ariidae, debido a sus estructuras óseas externas son es...

Dules auriga is an eurihaline species, the only species in the genus Dules belonging to the Serranidae family. It is distributed from Rio de Janeiro (Brazil) to Península Valdés (Argentina). In this work describes for the first time its unusual find in the waters of the Negro river, Río Negro, Argentina. The juvenile individual was captured with...

. Otoliths are calcium carbonate structures, deposited as aragonite, located in the inner ear of bony fish. In recent years, they have become a useful tool for the determination of fish species, trophic content, age studies, and the identification of fish stocks. The objective of this work was to describe the morphology of the three pairs of otolit...

Macrobrachium acanthurus is a caridean prawn native to Brazil, and studying techniques to assist in its cultivation is important due to economic interest in it. Eyestalk ablation is commonly used to promote ovarian development and maturation of captive crustaceans, but it can have possible consequences on fertility and brood quality. Histological a...

Otoliths are calcium carbonate structures, deposited as aragonite, located in the inner ear of bony fish. In recent years, they have become a useful tool for the determination of fish species, trophic content, age studies, and the identification of fish stocks. The objective of this work was to describe the morphology of the three pairs of otoliths...

The current study was aimed at studying the long-term effects of diclofenac on the freshwater shrimp Neocaridina davidi , concerning survival, somatic growth, and reproduction. To this study, both ovigerous females and males of this species were exposed for 63 d to 0 (control), 0.1, or 1 mg/L of diclofenac. At the highest concentration, significant...

Acoustic pollution in aquatic environments has increased at a dramatic rate with adverse effects on many organisms. Benthic organisms, including many invertebrates, are capable of sensing underwater sounds, yet the responses they trigger on organisms have received little attention. This study investigates the impact of underwater sound on the behav...

At the south of its geographical distribution, the fiddler crab Leptuca uruguayensis shows two population spawning events, with more than 65% of the females being ovigerous. The aim of this study was to assess the energy dynamics in L. uruguayensis females to estimate how they mix the capital and the income breeding strategies in the first and seco...

There has recently been great concern for proper conservation and use of living natural resources where good management practices on aquaculture are mandatory. The economic and ecological importance of prawns of the Genus Macrobrachium cause an impact at a global level involving economic, academic and social aspects. Macrobrachium americanum appear...

The onset of sexual maturity represents a complex step in animal life involving morphological, physiological, and behavioral changes. From this point onward, the energy income from food will be involved in three energetic-demanding-competing processes: metabolism-homeostasis, growth, and reproduction. Hence, in cultured species formulated feeds nee...

Plastic pollution in aquatic environments is present in all compartments from surface water to benthic sediment, becoming a topic of emerging concern due to the internalization, retention time, and its effects on aquatic biota. Crustacea with nearly 70,000 species, broad distribution and different roles in the trophic webs is a significant target o...

This study describes the mating behavior of Hypoconcha parasitica under laboratory conditions highlighting the spermathecal morphology and focusing on the seminal fluid storage and release of spermatozoa. The pairs were kept in aquaria where the mating behavior was recorded and described. The spermathecae of the female were analyzed using scanning...

This study aimed to evaluate the factors modulating the female reproductive performance of the fiddler crab Leptuca uruguayensis (Nobili, 1901) during the short reproductive season of a temperate population. We proposed two modulating factors: the age of females (young and old) and the periods of the reproductive season (beginning, middle, and end)...

The effect of different substrates on growth, sexual ratio, number of ovigerous females and survival of the red cherry shrimp, Neocaridina davidi, was analysed to enhance its culture. Recently hatched juvenile shrimps were exposed to 4 different substrates: Vesicularia sp., Ceratophyllum sp., Cabomba sp. and a green plastic net. Growth was analysed...

The male reproductive system in Portunoidea is voluminous in order to produce the sperm plug, avoiding sperm competition. The portunid crab, Charybdis hellerii, is a successful invasive species, and this study describes the male reproductive system under light and electron microscopy and evaluates the gonadosomatic index and spermatophore dehiscenc...

پیشینه و اهداف: در حال حاضر بسیاری از گونه­های جانوری، آلودگی­های ناشی از فعالیت­های انسانی را در زیستگاه­ خود تجربه می­ کنند. آلودگی صوتی ناشی از فعالیت­ های انسانی نیز بر بسیاری از گونه های جانوری تاثیرگذار می­ باشد. آلودگی صوتی در زیست­ بوم­ های خشکی و آبی به عنوان یک عامل ایجاد استرس و مختل­ کننده فعالیت­ های زیستی و آلاینده محیطی مهم و فراگیر...

The diet and feeding behaviour of a species determine its trophic position and define its ecological role. It also constitutes a key factor in structuring and maintaining the stability of communities. Due to the presence of external bone structures in fishes belonging to the Ariidae family, there are few predation records within the group, except f...

This study aimed at evaluating the effect of one generation of full-sibling mating on traits related to the fitness of the gregarious freshwater shrimp Neocaridina davidi, both under optimal and stressful (i.e. starvation) laboratory conditions. Females were maintained either with their brothers (Inbreeding treatment) or non-brothers (Outbreeding t...

RAVALLI C, FARIAS N, FIRPO C, LÓPEZ GRECO LS. 2021. Madurez sexual morfométrica de los morfotipos de Munida gregaria en el Golfo San Jorge. Informe de Investigación del INIDEP, Nro.063 del 17/09/2021, 21 p.

The aim of this study was to analyze the ecological influence of seasonal temperature variations on embryonic development in two species of Majoidea. Leurocyclus tuberculosus and Libinia spinosa. These species inhabit stable populations in the San José Gulf (42°25′41″S, 64°08′27″O, Patagonia-Argentina) in a wide depth range and seasonal temperature...

The present study investigated the effects of eyestalk ablation on the reproductive performance of females from the native caridean shrimp Macrobrachium acanthurus. The reproduction parameters fertility, fecundity, egg volume, larvae size, loss of embryos and number of females with viable eggs/larvae were evaluated. Females presenting carapace leng...

The caridean shrimp Palaemon argentinus is a species of commercial and ecological interest. Its numerous larval stages, the lack of knowledge on their nutritional requirements, and their ability to survive in a wide range of salinities raise questions on the optimum conditions for larval rearing in captivity. The present study was aimed at evaluati...

Reproduction is a costly process that depends on the management of available resources. Here, we aimed to understand the energetic strategies of females of the fiddler crab Leptuca uruguayensis (Nobili, 1901) in a population with short reproductive seasons. For this, we developed an integrated approach to recognize the brooding time, spawning patte...

Reproductive strategies vary according to season length, individual reproductive traits, and factors associated with the social context such as density and sex ratio of the individuals. The social context predicts the intensity of sexual selection due to its effect on mate choice and intra-sexual competition. Moreover, it exacerbates the costs deri...

The red cherry shrimp Neocaridina davidi is a popular freshwater ornamental species traded worldwide for aquarium keeping. Its aquaculture generally relies on commercially available feeds. This study evaluated the effect of three commercial diets (A, B and C) on its female reproductive performance and offspring quality. Relative realized fecundity...

We examined the effect of the double restriction-recovery cycle on survival, growth, and nutritional status of the freshwater prawn Macrobrachium borellii (Nobili, 1896), native to floodplain rivers of Argentina. The restriction period consisted of intermittent starvation (alternating four-day feeding with no feeding for four days) and a recovery p...

No abstract available

Neocaridina davidi is a popular shrimp in the aquarium industry; however, information regarding its husbandry is scarce. In this study, we investigated the contribution of biofilm to its life cycle, comprising three successive phases: (1) the evaluation of biofilm growth on plastic nets (PN), plastic sheets (PS) and agrovelo (AV); (2) the reproduct...

This study analysed the effects of three temperatures (20, 24 and 28ºC) on survival, body coloration, carotenoid content, body weight, biochemical composition and spermatophore quality in the shrimp Neocaridina davidi. In all treatments, survival was >90%. Female body coloration and total carotenoid content, for both males and females, did not stat...

In aquarium industry trade markets, Neocaridina davidi, the “red cherry” shrimp, is one of the most attractive ornamental shrimps due to the striking reddish coloration of females. Five commercial diets formulated for ornamental species were evaluated over a 90-day period in N. davidi males and females, based on survival, biochemical composition, b...

The application of biotechnology in animal reproduction has enabled the production of young forms in both quantity and quality. Increasing the number of viable gametes produced by reproducers, among other factors, through an ideal diet, can ensure higher production. Therefore, the aim of this study was to determine the influence of three diets on t...

Neocaridina davidi, the “red cherry” shrimp, is becoming popular in trade markets because of the reddish coloration of females. The aim of this study was to analyze the impact of background substrate color, and the presence of shelters on N. davidi female pigmentation and astaxanthin content. In the first experiment juveniles were assigned to one o...

The cover image is based on the Original Article Spermatophore production and sperm quality of the river prawn Macrobrachium americanum Spence Bate, 1868 fed with different diets by Juan Carlos Pérez‐Rodríguez et al., https://doi.org/10.1111/are.14265.

Human pharmaceuticals are pollutants of special concern due to their widespread consumption over the last decades, their high persistence in the environment, and the reported alterations produced on non-target organism. The antidepressant fluoxetine (FLX) exerts its effect by inhibiting serotonin (5-HT) reuptake at the presynaptic membrane, thus in...

The effects of different diets on spermatophore production and sperm quality were investigated in the river prawn Macrobrachium americanum. River prawns were cultured and fed with three diets for 244 days: fresh food (50% squid meat, Dosidicus gigas and 50% sardine muscle, Sardinops sagax); commercial pellets (35 Purina®); and a 50:50 mixture of bo...

The effect of glyphosate, both pure and formulated (Roundup Ultramax ®), was evaluated on males of the es-tuarine crab Neohelice granulata, by means of both in vivo and in vitro assays. The in vivo assays comprised the exposure for 30 d to 1 mg/L of the herbicide, until finally assessing weight gain, levels of energy reserves, sperm number per sper...

In diverse invertebrate species, sperm quantity and quality are positively correlated with male size, egg fertilization rates being consequently affected by paternal weight. This factor may also have an indirect effect on egg quality, because females could adjust the quantity of yolk stored in oocytes before spawning according to their partner attr...

The aim of this work is to study the feasibility to induce compensatory growth in Cherax quaricarinatus crayfish at an early stage of development under high density, the typical conditions of nursery phase. An advantageous characteristic of this species is the capacity to face temporary starvation, especially at early stages of development. This wo...

Studies on social control of functional sex in crustaceans are scarce and focused on hermaphroditic species. Hence, the objective of this study was to determine whether adult sex ratio affects juvenile sexual differentiation in the gonochoristic red cherry shrimp (Neocaridina davidi (Bouvier, 1904)) (Decapoda, Caridea). We tested two alternative hy...

Most identification keys of species of Farfantepenaeus use the shape of secondary sexual characters as a dichotomic character, but this approach focus only on adults. The lack of similar diagnostic tools for juveniles, which are commonly found in sympatry in estuaries, hinders the identification of the species Farfantepenaeus subtilis and Farfantep...

Maternal colouration based on carotenoids has been proposed to negatively affect offspring quality in several taxa, since females might trade off their limited carotenoid resources between body colouration and eggs. This study investigated in the ornamental “red cherry” shrimp (Neocaridina davidi) the relationship between maternal colouration and f...

This study aims to analyze the functional anatomy of the male reproductive system in Neocaridina davidi, a very popular ornamental species of caridean shrimp. Mature males were cold-anaesthetized and their reproductive systems were dissected for histological and histochemical analysis, while the spermatozoa and spermatophore wall ultrastruc-ture we...

Several decapod crustaceans are invaders, but little is known about the biological characteristics that potentiate the success of these decapods in invaded ecosystems. Here, we evaluate and describe some aspects of the reproductive biology and development of Lysmata vittata, an invasive shrimp species in the Atlantic Ocean. In addition, we intend t...

Reproductive cycle of Lysmata vittata (Stimpson, 1860) under laboratory conditions. Time (in days) between broods (TBB) for each replicate in different reproductive cycle (1–2, and 2–3). (PDF)

Development of the ovarian portion of the gonad in Lysmata vittata (Stimpson, 1860). Legend: Minimum (Min), maximum (Max) and mean ± standard deviation (X ± DP) diameter size (μm) of primary and advanced oocytes in different stages of development of the gonad (developing, developed and spent). (PDF)

Reproductive cycle of Lysmata vittata (Stimpson, 1860) under laboratory conditions. Time (in days) for the development of the ovarian portion of the gonad (TDO) and time (in days) of embryonic development (TED) for each replicate in different reproductive cycle (1, 2, and 3). (PDF)

Embryonic development of Lysmata vittata (Stimpson, 1860). Volume and area of the egg, yolk area of the egg and percentage (%) of the area of the egg occupied of yolk per replicate in each period of the embryonic development. (PDF)

This research studied the in vitro compatibility of Cherax quadricarinatus digestive proteases and crude enzyme extracts recovered from fish‐processing waste to evaluate their potential use as feed additives to increase digestion efficiency in decapod crustaceans. The sources of exogenous enzymes were: Pleoticus muelleri (Pm), Artemesia longinaris...

This research studied the in vitro compatibility of Cherax quadricarinatus digestive proteases and crude enzyme extracts recovered from fish-processing waste to evaluate their potential use as feed additives to increase digestion efficiency in decapod crustaceans. The sources of exogenous enzymes were: Pleoticus muelleri (Pm), Artemesia longinaris...

Reproductive anatomy, including sperm storage structures and sperm transfer, is an important feature used to analyze phylogenetic relationships among taxa. We describe the male reproductive anatomy, seminal fluid production and packaging of spermatozoa in the vas deferens of primitive crabs. In all species of Dromiidae, the testes were tubular type...

Callichirus major is a species of ghost shrimp that has burrowing habits, building underground galleries in the intertidal region of beaches. This study aimed to analyse some morphological parameters to verify its type of sexual pattern. A sample of 79 individuals, collected at the beach of Corujão, Espírito Santo, Brazil, was used. Data on the ext...

The present study was aimed at evaluating the effect of male presence on ovarian maturation in juvenile females and the role of potential chemical, visual and tactile cues emitted by males in that physiological process. A highly gregarious caridean shrimp with sexual dimorphism, Neocaridina davidi, was used as experimental model. We tested the hypo...

Maternal provisioning is particularly important in invertebrates with abbreviated development because large energy reserves must be provided for the developing embryo. In this context, the objective of the present study was to analyze in an aquatic invertebrate with direct development the effect of temperature on female biochemical composition and...

Our aim was to describe the reproductive system of males and the formation of sperm packages in the seminal receptacle (SR) of recently mated females of the arrow crab Stenorhynchus seticornis. The male reproductive system was analyzed, and was described using light microscopy and histological and histochemical methods. The first pair of gonopods w...

The relationship between parental mass and female reproductive output, as well as offspring quality, was studied in the red cherry shrimp (Neocaridina davidi (Bouvier, 1904)) under controlled laboratory conditions. Adult males and females of the same age were paired combining different shrimp masses. The number of hatched juveniles from large femal...

Knowledge of the critical points in larval stages is essential to evaluate the physiological state of the larvae in their natural environment. This study investigated the nutritional vulnerability index (NVI) of the first (ZI) and second (ZII) zoeal stages of Stenorhynchus seticornis. Zoeae were assigned to two experiments: (1) point of no return (...

The decline with age in components of fitness is variable among different taxa and includes changes in fertility and brood quality. In this study, we selected individuals of Neocaridina davidi, a freshwater shrimp with direct development, to analyze juvenile quality and female reproductive performance over successive spawnings, both of which are co...

The physiological costs of reproduction can be measured as the energy allocated to reproductive activities. In fiddler crabs, females allocate energy to vitellogenesis and brooding, whereas males perform expensive courtship behaviors. We evaluated in a large-scale study the reproduction cost of females and males of Leptuca uruguayensis in a tempera...

Mobilization patterns of energy reserves during starvation are highly variable among crustaceans, and understanding this process is useful to satisfy the nutritional requirements of cultured organisms. The aim of this study was to elucidate the mobilization patterns on early and advanced juveniles—first free stage and one-gram juveniles—of redclaw...

In the first part of this study, toxicity tests were performed on the sperm of Macrobrachium acanthurus using four cryoprotectants for periods of 10 and 20 min at concentrations of 10 and 20%. In the second part, cryopreservation was performed by applying the least toxic cryoprotectant, and two freezing methods were tested over 24 hours: automated...