Age and growth estimates of the jumbo flying squid (<i>Dosidicus gigas</i>) off Peru

Goicochea-Vigo, Carlos; Morales-Bojórquez, Enrique; Zepeda-Benitez, Viridiana Y.; Hidalgo-de-la-Toba, José Ángel; Aguirre‐Villaseñor, Hugo; Mostacero-Koc, Jorge; Atoche-Suclupe, Dennis

doi:10.1051/alr/2019007

Cited by 6 publications

(4 citation statements)

References 61 publications

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“…This fishing resource is of considerable interest in the region [3], with average annual catches of 874,723 t between 2015 and 2019 [4,5]. It has been reported that the average longevity of the jumbo squid in the EPO is less than a year and that it presents rapid growth rates [6][7][8][9]. This is an opportunistic predatory species that can feed on fishes, crustaceans, and squids.…”

Section: Introductionmentioning

confidence: 99%

Biological and Fishery Parameters of Jumbo Squid (Dosidicus gigas) in the Colombian Pacific, a Resource without Directed Fishing Exploitation

Córdoba-Rojas,

Gallego,

Londoño

et al. 2024

JMSE

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The distribution range of the jumbo squid (Dosidicus gigas) has increased over the past few decades; it is now found in the entire Eastern Pacific Ocean and is considered an important species in the small and large fisheries of Chile, Perú, Ecuador, Costa Rica and Mexico but not in the Pacific region of Colombia. Three night-fishing campaigns were conducted over a year in the coastal Baudó-San Juan environmental unit, adjacent to the Bajo Baudó Encanto de Manglares Regional Integrated Management District in Chocó, at three locations 20 km, 35 km, and 45 km from the coastline to establish the availability and viability of jumbo squid as an alternative to the target species of artisanal fisheries in the Colombian Pacific. Night fishing sets were conducted at 60 m and 200 m depth at each sampling station to assess some of the biological parameters of the jumbo squid population (mantle length-ML, weight, growth and size at sexual maturity). Most catches were obtained in February and March. Growth was isometric, the average catch size was 24.3 cm ML, size at sexual maturity (L50) was 23.25 cm ML, estimated maximum size (L∞) was 39.9 cm ML, the growth constant (K) was 0.83, and mortality due to experimental fishing was 26 cm ML. According to our results, the jumbo squid fishery in the Colombian Pacific artisanal fishery would be viable during the first months of the year.

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Section: Introductionmentioning

confidence: 99%

Biological and Fishery Parameters of Jumbo Squid (Dosidicus gigas) in the Colombian Pacific, a Resource without Directed Fishing Exploitation

Córdoba-Rojas,

Gallego,

Londoño

et al. 2024

JMSE

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“…For example, the flying jumbo squid can reach 140 cm in mantle length in less than two years (Goicochea-Vigo et al, 2019). These characteristics of squid imply that they must feed voraciously (Rodhouse et al, 1998, Chap.…”

Section: Introductionmentioning

confidence: 99%

The role of squid for food web structure and community-level metabolism

Denéchère

Denderen

Andersen

2023

Preprint

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Squid differ from fish by their high growth rate, short life span and feeding behaviour. Their fast life strategy is thought to impose a high predation pressure on zooplankton, fish and other squid preys, and a rapid transfer of energy to upper trophic-levels of marine food webs. However, there is a lack of understanding of how squid's fast life cycle affects the food-web structure, which is needed to project squid biomass across marine regions under shifting climatic conditions. Here, we examine the role of squid on community metabolism and biomass by collecting data on squid somatic growth and incorporating squid in a size- and trait-based fish community model. We show that squid have a 5 times higher average somatic growth rate than fish. Due to their high food demands, squid are constrained to regions of high pelagic secondary production. The presence of squid in these systems is associated with a reduction in total upper trophic level biomass. This decline is caused by an increase in community-level respiration losses associated with squid. Our results indicate that squid might have a large impact on ecosystem structure even at relatively low standing stock biomasses. Consequently, the recent proliferation of squid in ecosystems around the world is likely to have significant ecological and socio-economic impacts.

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“…Conditional factors are essential biological parameters and important indicators for assessing the status of aquatic species, populations, and communities [33,34]. Among them, growth is very important for estimating life history, population structure, demographics, ecosystem dynamics, and fishery sustainability [35,36]. The growth characteristics of cephalopods can help identify their population structure and improve our understanding of their key biological processes [37,38].…”

Section: Introductionmentioning

confidence: 99%

Latitudinal Difference in the Condition Factor of Two Loliginidae Squid (Beka Squid and Indian Squid) in China Seas

Guo

Zhang

et al. 2023

Diversity

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Cephalopod fisheries in the China Seas have witnessed an increasing trend in the catches of coastal cephalopods since the 1990s, with Loliginidae squid emerging as the main commercial target species. However, climate change and overfishing have led to a dramatic reduction in Loliginidae squid resources, highlighting the need to improve monitoring, protection, and management of this species. The Loligo beka and Uroteuthis duvaucelii are widely distributed along the coastal areas of the China Seas, and have commercial and ecological importance. Despite having overlapping distributions, similar life histories, and a strong dependence on the marine environment, there is limited knowledge about their growth and responses to environmental changes, hindering the effective management of their resources. In this study, we investigated the interspecies and intra-species differences in condition factor and their responses to temperature changes by analyzing data collected from wide coastal areas of the China Seas from June 2019 to November 2020. The findings showed that both species exhibited allometric growth and reproduced throughout the year, with two main breeding peaks. There were significant monthly variations and latitude differences in the intra-species growth, with a higher proportion of small-sized individuals (between 5 and 10 g for L. beka and between 10 and 20 g for U. duvaucelii) in low-latitude waters. The latitudinal differences in body weight and distribution between and within the two species were mainly due to natural habitats, especially temperature. Our mixed effect model results demonstrated that both species’ body weight increased with increasing temperature, suggesting that Loliginidae squid have significant environmental adaptability and can be used as an indicator species for studying environmental changes in the China Seas. These findings have significant implications for understanding the population dynamics, species development, and regionally specific management of Loliginidae squid fisheries in the China Seas.

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Age and growth estimates of the jumbo flying squid (Dosidicus gigas) off Peru

Cited by 6 publications

References 61 publications

Biological and Fishery Parameters of Jumbo Squid (Dosidicus gigas) in the Colombian Pacific, a Resource without Directed Fishing Exploitation

Biological and Fishery Parameters of Jumbo Squid (Dosidicus gigas) in the Colombian Pacific, a Resource without Directed Fishing Exploitation

The role of squid for food web structure and community-level metabolism

Latitudinal Difference in the Condition Factor of Two Loliginidae Squid (Beka Squid and Indian Squid) in China Seas

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