ÁF

Ángel F. González

Instituto de Investigacións Mariñas

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i-10 index

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ÁG

Ángel Guerra

Hospital Intermutual de Levante

ÁR

Álvaro Roura

Instituto de Investigacións Mariñas

Marcos Regueira

Instituto de Investigacións Mariñas

Manuel E. Garcí

Institute of Marine Research

Santiago Pascual

Instituto de Investigacións Mariñas

Jorge Hernández‐Urcera

Instituto de Investigacións Mariñas

Graham J. Pierce

Instituto de Investigacións Mariñas

Michael J. Kuba

University of Naples Federico II

Jaruwat Nabhitabhata

Prince of Songkla University

Unai Markaida

El Colegio de la Frontera Sur

Cooperative Institutions

Consejo Superior de Investigaciones Científicas

Instituto de Investigacións Mariñas

Observatoire Océanologique de Banyuls-sur-Mer

Universidad Nacional Autónoma de México

Institute of Marine Research

Instituto Español de Oceanografía

University of Lisbon

Universidade de Vigo

Center for Scientific Research and Higher Education at Ensenada

Stazione Zoologica Anton Dohrn

Author Statistics

Papers

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Past, present, and future trends in octopus research

Elsevier eBooks (2024)

Rui Rosa Catarina Pereira Santos Francisco O. Borges Piero Amodio Michael D. Amor

octopus (software)

10.1016/b978-0-12-820639-3.00010-8

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Citations (2)

Observational evidence of egg guarding in wild European squid

Ecology and Evolution (2024)

Jorge Hernández‐Urcera Ángel F. González Felipe Escolano Miguel Cabanellas‐Reboredo

Abstract It is accepted that loliginids, like other squid, deposit their eggs in crevices on the seabed and then abandon them. In this work, we present observational evidence of egg guarding behavior in wild European squid, Loligo vulgaris . While monitoring a squid spawning crevice at night in Spain, a large mass of squid eggs was located and filmed 17 times during 42 days, until hatching. A male and a female of L. vulgaris were filmed in front of the crevice. The same male was filmed guarding the eggs on consecutive days. In the presence of the divers, male and female alternated their approaches to the crevice repeatedly touching and flushing the egg clusters. This guarding behavior differs from the reproductive habits assumed for the European squid and could represent the first evidence of egg guarding by a male in cephalopods.

Loligo

10.1002/ece3.70111

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Citations (0)

The black-pygmy mussel Limnoperna securis in Galician Rias (north-eastern Atlantic): new records and first evidence of larval stages predation by copepods

Marine Biodiversity Records (2013)

Ángel Guerra Santiago Pascual Manuel E. Garcí Álvaro Roura Gonzalo Mucientes

10.1017/s1755267212001224

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Citations (9)

New Findings on the Behaviour of the Horned Octopus Eledone cirrhosa in Captivity

Thalassas An International Journal of Marine Sciences (2017)

Marcos Regueira Ángel Guerra Ángel F. González

Captivity

octopus (software)

10.1007/s41208-017-0040-3

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Citations (2)

Morphological and genetic evidence that Octopus vulgaris Cuvier, 1797 inhabits Amsterdam and Saint Paul Islands (southern Indian Ocean)

ICES Journal of Marine Science (2010)

Ángel Guerra Álvaro Roura Ángel F. González Santiago Pascual Yves Cherel

Abstract Guerra, Á., Roura, Á., González, Á. F., Pascual, S., Cherel, Y., and Pérez-Losada, M. 2010. Morphological and genetic evidence that Octopus vulgaris Cuvier, 1797 inhabits Amsterdam and Saint Paul Islands (southern Indian Ocean). – ICES Journal of Marine Science, 67: 1401–1407. The coastal octopus at Saint Paul and Amsterdam Islands is Octopus vulgaris Cuvier 1797. Meristic and morphological characters, along with phylogenetic analysis of COI and COIII DNA sequences, were used to identify 11 animals collected in 2000 or 2001. The range of the species is therefore expanded to include the oceanic islands of the central southern Indian Ocean. The trees also depicted the genus Octopus as polyphyletic and O. vulgaris sense Cuvier or sensu stricto as monophyletic.

Polyphyly

octopus (software)

Monophyly

Meristics

10.1093/icesjms/fsq040

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Citations (46)

Dwellers in dens on sandy bottoms: Ecological and behavioural traits of <em>Octopus vulgaris</em>

Scientia Marina (2014)

Ángel Guerra Jorge Hernández‐Urcera Manuel E. Garcí Marta Sestelo Marcos Regueira

Four visual censuses targeting Octopus vulgaris living in dens on sandy bottoms were carried out from June to October 2013 in the National Park of the Atlantic Galician Islands (NW Spain).Censuses were undertaken by scuba diving between 5 and 21 m depth in daytime.The total area swept was 13.75 ha.There were no significant differences between octopus presence in dens during open and closed fishing seasons.Depth had a significant negative relationship with occupancy.The average number of dens per 1000 m 2 was 3.84±0.84 in June and 3.89 in October.The area per den was 260 m 2 .Den number estimations varied between 1586 and 2057.The largest number of dens (76.5%) was found between 5 and 10 m depth.Den distribution was clumped.No significant differences were found between octopus size classes (small, medium and large) and den diameter.Associate dens were observed.There were no significant differences in den diameter and shell types found around the middens.Many dens could be "permanent".Drilling bivalve shell behaviour is discussed.The surveyed area had around 1100 individuals, mainly small specimens.No significant differences were found between octopus size and depth.Substrate, den type and food abundance and availability (especially razors Ensis arcuatus) seem to be the main factors influencing dens and octopus density and distribution.Den availability does not appear to be a limiting factor in this case.Temperature, den availability, predators and fishing pressure influencing density and distribution are discussed.Rodas inlet may be a preferential habitat for O. vulgaris individuals ranging from 200 to 2000 g, but especially small specimens (≤1000 g).

octopus (software)

10.3989/scimar.04071.28f

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Citations (30)

New contribution to the knowledge of the mesopelagic cephalopod community off the western Canary Islands slope

Regional Studies in Marine Science (2022)

Alejandro Escánez Ángel Guerra Rodrigo Riera Alejandro Ariza Ángel F. González

Mesopelagic zone

Cephalopod

Bathyal zone

Archipelago

10.1016/j.rsma.2022.102572

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Citations (3)

First insights into the spatial behaviour of Octopus vulgaris in the wild using acoustic telemetry

Animal Biotelemetry (2024)

Kenn Papadopoulo Alina Hillinger Gonzalo Mucientes Álvaro Roura David Villegas‐Ríos

Abstract Octopuses are amongst the most fascinating animals in our oceans; however, while their intricate behaviours are often studied in laboratory settings, basic aspects of their movement ecology remain unstudied in the wild. Focusing on the socio-economically important common octopus ( Octopus vulgaris ), this study employs, for the first time, acoustic tracking techniques to address knowledge gaps regarding the species spatial ecology within a marine protected area. A total of 24 wild O. vulgaris (13 males, 11 females) were tagged in 2022 in the National Park Maritime-Terrestrial of the Atlantic Islands of Galicia, Spain. Acoustic transmitters were externally attached to the third arm, after testing other body parts (mantle cavity). Males were on average detected on 10 times more occasions than females (49 days in males and five in females). The average activity space in the study area was large in comparison to that determined in similar studies, with 0.16 km 2 . Activity space between males and females as well as day and night were comparable. Tagged octopuses displayed a crepuscular activity pattern. The location of dens could be established for 15 out of 24 individuals, from which octopuses were observed to undertake regular daytime excursions. Several individuals were also found to occupy more than one den and/or switch their main dens throughout the study duration. First implications and benefits of this approach are discussed.

octopus (software)

10.1186/s40317-024-00361-6

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Citations (0)

The giant squid Architeuthis: An emblematic invertebrate that can represent concern for the conservation of marine biodiversity

Biological Conservation (2011)

Ángel Guerra Ángel F. González Santiago Pascual Earl G. Dawe

Marine protected area

Marine ecosystem

Marine reserve

Marine conservation

10.1016/j.biocon.2011.04.021