Breeding behavior and sex ratio variation of Pleuroncodes monodon (Crustacea: Galatheidae) off the Peruvian coast

Franco-Meléndez, Milagros

doi:10.7773/cm.v38i2.2032

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…The bathymetric distribution of squat lobster is conditioned by its reproductive behaviour and the oceanography of the region (Palma & Arana 1997;Rivera & Santander 2005). The reproductive peak of this species occurs yearly between June and July (Gutiérrez & Zúñiga 1977;González et al 2005;Rivera & Santander 2005;Franco-Meléndez 2012), so large gatherings of individuals are expected during this period. Likewise, it is established that female squat lobsters inhabit deeper waters in the early eggcarrying stage (autumn), and as the winter progresses, the percentage of ovigerous females at lower depths increases (Palma & Arana 1997), indicating that ovigerous females migrate to shallower waters in winter to release larvae (Arana & Culquichón 1990;Palma & Arana 1997), so they are concentrated in coastal areas when spawning occurs.…”

Section: Discussionmentioning

confidence: 99%

Diet composition of an opportunistic predator from an upwelling area in the Southeastern Pacific

et al. 2020

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The aim of this study was to use scat analysis to analyse the dietary composition of the South American sea lion (SASL, Otaria byronia) over a short temporal scale and in different but closely located colonies in the Humboldt Current System of northern Chile. Scat samples were collected at Arica (18°34 0 S), Iquique (20°48 0 S) and Mejillones (23°04 0 S) during the summer (January to March) and winter (July) of 2015. A total of 16 595 individual prey items from nine species were found in 194 of the 215 scat samples. In general, squat lobster (Pleuroncodes monodon) was the most important prey item for the sea lion diet, both by number and according to the index of relative importance (%IRI), followed by anchovy (Engraulis ringens), which was the most frequent prey item in the scats and the most important by weight. Patagonian squid (Loligo gahi) ranked third in importance in the sea lion diet. However, some spatiotemporal variations in the consumption of prey were found. Squat lobster was the most important prey for sea lions in Arica and Iquique, while anchovy was the dominant prey in Mejillones. Regarding seasonal variation, squat lobster was more important in winter than in summer in the three localities, while anchovy was also more important during winter, except in Mejillones where the levels of consumption of this prey were similar in both seasons. These results show that SASL adjust their dietary preferences, modifying the contribution of different prey both spatially and temporally. Spatiotemporal variations in the SASL diet can be explained by temporal changes in the distribution and abundance of their prey.

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Section: Discussionmentioning

confidence: 99%

Diet composition of an opportunistic predator from an upwelling area in the Southeastern Pacific

et al. 2020

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“…Ante la escasa información sobre la temática aquí abordada, los resultados obtenidos en cuanto a las causas que influyeron en el número de hembras grávidas se comparan con los registrados en algunas investigaciones realizadas en ambientes no controlados. El mayor número de hembras ovígeras en la proporción 1:1 es similar a los resultados obtenidos en estudios de población en el medio natural; lo cual hace referencia al equilibrio biológico de una población, en donde, al existir un macho por cada hembra, se limita la competencia por el apareamiento (Franco-Meléndez, 2012;Fischer, 1930). Además, los resultados obtenidos en la proporción que registraba el mayor número de machos se asemejan a los mencionados para otros crustáceos, los cuales indi- Variación en el tiempo de incubación registrado desde la aparición de los huevos en el abdomen de las hembras de Cambarellus montezumae hasta la liberación de las postlarvas.…”

Section: Discussionunclassified

Impact of the Sex Ratio in the Breeding Aspects of the Crayfish Cambarellus montezumae

Orti¹

2019

Hidrobiológica

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“…In Peru, the presence of P. monodon has been associated with intense upwelling events from Puerto Pizarro, Tumbes (03 • S), to Los Palos, Tacna (18 • S), favoring their reproductive period [97], as well as the availability of food by providing a constant source of nutrients that sustain primary productivity [98].…”

Section: Reproduction and Bioenergeticsmentioning

confidence: 99%

The Red Squat Lobster Pleuroncodes monodon in the Humboldt Current System: From Their Ecology to Commercial Attributes as Marine Bioresource

Yapur-Pancorvo,

Quispe-Machaca,

Guzmán-Rivás

et al. 2023

Animals

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This study focused on gathering available information on Pleuroncodes monodon, a widely distributed crustacean in the Humboldt Current System. Off the Chilean coast, this species presents benthic habits and constitutes the main resource of the industrial crustacean fishery; many studies have been carried out on its life cycle during the last century. In contrast, off the coast of Peru, this species exhibits mainly pelagic habits, with latent information gaps on aspects of its life history and no commercial fishery activities, such as catching, taking or harvesting from the marine environment. P. monodon is an ecologically important species, as a source of energy for its predators, which include invertebrates, birds, marine mammals and fish of commercial interest. Thus, P. monodon seems to play a key role in this ecosystem, mainly as an intermediate link between top predators and the first links in the food chain. In addition, this species presents various adaptation strategies to the changing oceanographic parameters of the areas it inhabits, even tolerating hypoxic environments and great depths in order to avoid being predated. Likewise, from an economic viewpoint, it has a high commercial value as a marine bioresource with great potential in the pharmaceutical and food industries. Considering this, more studies must be carried out to corroborate the biological, ecological, and fishing importance of this species in order to generate efficient management measures and ensure a sustainable fishery.

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Breeding behavior and sex ratio variation of Pleuroncodes monodon (Crustacea: Galatheidae) off the Peruvian coast

Cited by 5 publications

References 6 publications

Diet composition of an opportunistic predator from an upwelling area in the Southeastern Pacific

Diet composition of an opportunistic predator from an upwelling area in the Southeastern Pacific

Impact of the Sex Ratio in the Breeding Aspects of the Crayfish Cambarellus montezumae

The Red Squat Lobster Pleuroncodes monodon in the Humboldt Current System: From Their Ecology to Commercial Attributes as Marine Bioresource

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