A5056911083- Cephalopods and Marine Biology
- Marine and fisheries research
- Veterinary Pharmacology and Anesthesia
- Turtle Biology and Conservation
- Coral and Marine Ecosystems Studies
- Meat and Animal Product Quality
- Marine Bivalve and Aquaculture Studies
- Ichthyology and Marine Biology
- Marine Ecology and Invasive Species
- Marine animal studies overview
- Crustacean biology and ecology
- Parasite Biology and Host Interactions
- Isotope Analysis in Ecology
- Neuroendocrine regulation and behavior
- Fish Biology and Ecology Studies
- Primate Behavior and Ecology
- Identification and Quantification in Food
- Genetic diversity and population structure
- Coccidia and coccidiosis research
- Human-Animal Interaction Studies
- Neurobiology and Insect Physiology Research
- Fish Ecology and Management Studies
- Environmental Toxicology and Ecotoxicology
- Fish biology, ecology, and behavior
- Animal Behavior and Reproduction
Universidad de Las Palmas de Gran Canaria
2019-2024
Instituto de Investigacións Mariñas
1985-2013
Consejo Superior de Investigaciones Científicas
1994-1999
Covid-19 pandemic has affected worldwide in many different ways. Fisheries around the world are not an exception due to long-term isolation and non-activities period suffered. To do evaluation of its impact on fishing sectors Canary Islands, 87 online phone questionnaires were carried out between July September 2020, conducting interviews artisanal fishermen, fishmongers, recreational charter boats fishermen tackle shops along archipelago. Both, have been by this pandemic, but unequal...
In this study, we used a historical collection of photographs taken by recreational fishers from 1940 to 2014, at the island Gran Canaria, show both significant decrease in mean total length Epinephelus marginatus and concurrent change composition captures. Before 1980, fish caught photographed was c . 100 cm, while after 2009 typically < 40 cm. predominant captured species E. (an apex predator), but currently majority catches are omnivorous species, particular parrotfish, Sparisoma...
Long-term (1991–1997) information on parasitic infection by anisakid nematodes in cephalopods and top predators (marine mammals) of the south-eastern area North Atlantic underlines important role small cetaceans as final hosts for A. simplex. The ommastrephid squid Illex couidetii, Todaropsis eblanae Todarodes sagittatus are most cephalopod paratenic life cycle parasite. Information parasite flow parasite-caused diseases could be use stock assessment purposes. Moreover, it largely agrees...
The presence of spiny butterfly rays, Gymnura altavela, in waters less than 20 m deep off the Canary Islands shows marked seasonality, with relatively high abundances summer and autumn. Large aggregations sometimes hundreds individuals, primarily females, appear specific shallow areas archipelago seem to be associated seasonal variation water temperature. This pattern or absence suggests that rays migrate into deeper other unknown during rest year. G. altavela sexual dimorphism; our study,...
Abstract Abralia veranyi and Abraliopsis morisii were the most abundant cephalopods caught during epipelagic mesopelagic surveys off Canary Islands accounted for 26% 35% of cephalopod catch, respectively. Diel vertical migration patterns observed in both species. At night, A. was recorded at depths as shallow 38–90 m, whereas occurred 98–219 m. As individuals grow mantle length, their diet changes substantially. showed ontogenetic shifts 22.9 mm 35.3 dorsal length (DML), while 20.5 30.9 DML....
Abstract This is the first study addressing validation of early growth stages (including increment) in beaks juvenile cuttlefishes. The age juveniles Sepia officinalis was performed by comparison number increments observed rostrum surface lower jaws with their true age. A total 159 individuals were reared at 18 ºC and 21 ºC, ages up to 31 days from hatching. beak counted contrasted life after hatching, validating hypothesis one increment corresponding day life. mean coefficient variation...
Percnon gibbesi is a native crab species characteristic of intertidal and subtidal zones the Atlantic coast European Macaronesian archipelagos (Azores, Madeira, Canary Islands), probably also in neighbouring rocky coasts northwest Africa. P. considered an invasive alien almost all Mediterranean, with expanding populations from Spain to Turkey, including Libya. However, its biology ecology are highly unknown, despite range distribution. In Gran Canaria Island, this crab, shows carapace length...
A study of the diet Sepia officinalis and S. elegans in Ria de Vigo has shown that crustaceans are most abundant prey both species, followed by fish. Changes food composition species occur with growth. The type eaten two sexes these is very similar. possibility trophic competition between juveniles qficinalis discussed.
Abstract In this study, we explored the feasibility of using beaks African cuttlefish Sepia bertheloti for age estimation and growth analysis. The rostrum sagittal section (RSS) lower beak was most suitable region in species. It applied samples caught off Morocco Guinea-Bissau between June 2018 January 2020. A maximum life expectancy around 14 months observed (specifically 419 days cuttlefishes from 433 Guinea-Bissau). males presented greater longevity, as females 9 11 months. showed a...
The cuttlefish ingests much skeleton from the crustaceans and fish it preys upon. skeletal pieces are relatively large their dimensions bear a close relationship to length of buccal mass diameter oesophagus. structures instrumental in breakdown prey orientation long ensure entry into Many material present stomach contents still have attached muscles, showing that there is little, or no, external digestion. Skeletal may be important for long‐term maintenance young Sepia captivity.
Abstract We report the first case of partial albinism in Critically Endangered angelshark, Squatina squatina . The encounter with this specimen took place while SCUBA diving on beach Tufia, located east coast island Gran Canaria 2 April 2021. This is also confirmed finding an albino elasmobranch Canary Island archipelago.
Abstract A visible pathological condition located in the arms and mantle of Hubb octopus Octopus hubbsorum from Northeast Pacific waters is described for first time. Histological sections confirmed later stages (fibrosis) a chronic inflammatory unknown aetiology. Keywords: Gross lesionOctopus Published collaboration with University Bergen Institute Marine Research, Norway, Biological Laboratory, Copenhagen, Denmark Acknowledgments The authors wish to thank L.F. Bückle collaborators CICESE...
Abstract Notoscopelus resplendens is an abundant myctophid in the region of Central-Eastern Atlantic. As with a majority other species, this species performs vertical migration, playing key role oceanic food web and carbon sequestration. We examined reproductive biology N. based on 579 specimens caught between 1997 2002 off Canary Islands. found that maximum standard length ( SL ) was lower than size reported by authors. The sex ratio not different from 1:1. average at first maturity (L 50...
The role of the ommastrephid squids Illex coindetii and Todaropsis eblanae (Mollusca: Cephalopoda) collected from two areas in north-eastern Atlantic waters (north-west Spain) as hosts for larval ascaridoid nematodes was examined November 1992 to 1993. morphology, morphometric growth, population dynamics electrophoretic identification anisakid described. correspondence Anisakis type I larvae recovered both squid species within sibling simplex B is confirmed by comparative data on...