Fran Oficialdegui

🌍 New release: #GuardIAS Newsletter #1! From early-warning AI systems to field eradication trials, see how we’re turning science into action against #AquaticInvasions across Europe. Read it here: guardias.eu/wp-content/u...

@guardias.bsky.social
#bioinvasions
#InvasiveSpecies
#MarineEcology
🧪🌐🌍🌊🐟

🚨 Applications open: GuardIAS Summer School!
Learn how to detect aquatic #InvasiveAlienSpecies using #eDNA — from sampling design and lab workflows to bioinformatics + policy integration. Lectures + hands-on case studies.
👉 guardias.eu/welcome-to-t...
#MarineEcology #AquaticEcology #BioInvasions 🌍🌐

A Systems Perspective: How Social–Ecological Networks Can Improve Our Understanding and Management of Biological Invasions Abstract. Reversing biodiversity loss and the sustainability crisis requires approaches that explicitly consider human–nature interdependencies. Social–eco

Whooop! New paper online!

"A Systems Perspective: How Social–Ecological Networks Can Improve Our Understanding and Management of Biological Invasions"

Phenomenal effort by Fiona Rickowski to pull this all together, wrangling a large co-author/bag-of-cats team into shape!

doi.org/10.1093/bios...

How social–ecological #networks can improve our understanding and management of #biologicalinvasions – new paper by Fiona Rickowski et al. now published in #BioScience doi.org/10.1093/bios... #InvasiveSpecies #nonnative #pests #conservation #alienspecies

🔵 Aquaculture is one of the most important pathways for the introduction of non-native species.

Since 1950, one third of species used in aquaculture have been farmed outside of their native ranges.

📄 doi.org/10.1111/raq....

🔗 issuu.com/aquaculturem...

XVII SECEM congress, Évora
Mara Torreblanca explained how the otter has learned to consume on the Atlantic blue crab, /Callinectes sapidus/, a truly dangerous prey, forced by the temporal scarcity of the red swamp crayfish, /Procambarus clarkii/.
Fully American menu
@secem-sicem.bsky.social

The first #GuardIAS #Conference on Prevention of Invasive Alien Species Introductions and #Biosecurity Risk Assessment starts tomorrow 12/11 morning at 9:00 GMT - 10:00 CET - 11:00 EET. Don't miss it!
#bioinvasions #InvasiveSpecies #MarineEcology #AquaticEcology #IAS 🌍🌐🌊

Today, Mara Torreblanca successfully defended her MSc thesis on otter diet in the Río Cachón, and the role of the many, and colourful, invasive prey
At @pablodeolavide.upo.es , with @sergiobedmar.bsky.social and @oficialdegui.bsky.social
A really great work! (lucky us!)
@ebdonana.bsky.social

That’s a wrap for the #GuardIAS Annual Meeting! Three inspiring days of exchange, collaboration, and progress towards stronger action on #InvasiveSpecies. Grateful to all who contributed to the discussions and next steps!
#bioinvasions #AquaticEcology #MarineEcology
@guardias.bsky.social

Day 2 of the #GuardIAS meeting was all about our 11 case studies!

Great to see the nitty-gritty of using eDNA & drones for detection, modelling population spread, and launching new citizen science projects.

Also got a preview of upcoming online events from at @invasivesnet.bsky.social.

Más de 1.200 especies no nativas están establecidas en la Península Su introducción y expansión están modificando los ecosistemas locales y representan un riesgo creciente para la biodiversidad autóctona. La colaboración internacional dentro y entre las entidades políticas de la península ibérica es esencial para mitigar de manera efectiva los impactos de las invasiones biológicas.

🌱 Más de 1.200 especies no nativas están establecidas en la Península, según un estudio en el que ha participado @ebdonana.bsky.social

Su expansión está modificando los ecosistemas locales y representan un riesgo creciente para la biodiversidad autóctona

🦀 La península ibérica alberga más de 1200 especies no nativas

🌾 El 75% corresponde a plantas e insectos

🐜 Estas especies modifican los ecosistemas locales y representan un riesgo para la biodiversidad autóctona

👩‍🔬Un estudio de la @ebdonana.bsky.social ➡️ http://tiny.cc/5q9t001

The otter and its colourful invasive decapod estuarine menu
Mara Torreblanca anticipates the main results of her MSc thesis at #conserbio2025
@ebdonana.bsky.social
@oficialdegui.bsky.social @sergiobedmar.bsky.social

🚨 New paper out! 🚨
📍 In our latest "Diversity and Distributions" study, led by Ismael Soto, we reveal that over 1,200 non-native species are already established across the Iberian Peninsula
📄 Read it here 👉 doi.org/10.1111/ddi....
#invasivespecies

Las plantas vasculares (Tracheophyta) y los insectos (Arthropoda) dominan entre las especies no nativas en Iberia. Asteraceae y Formicidae son las familias más frecuentes. Foto: Vespa velutina. Autor: Diego González Dopico (https://spain.inaturalist.org/people/diegodgd). Licencia: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Reencuadrada.

La mayoría de especies no nativas llegaron por escape de jardines, acuarios o cultivos, en especial plantas. Insectos y crustáceos se introdujeron como polizones o acompañantes involuntarios, reflejando el papel del transporte global. España y Portugal comparten patrones similares.

La mayoría de las especies provienen del Paleártico, pero también llegan desde América, África y Asia. El comercio y el clima explican esta mezcla de orígenes

Las introducciones se dispararon desde 1950, con picos en los años 70. Aunque los registros han bajado, las invasiones siguen activas y requieren vigilancia

Las #invasionesbiológicas avanzan en la Península Ibérica: más de 1200 especies no nativas ya están establecidas. Un estudio mapea rutas, orígenes y focos de invasión con la ayuda de datos de @gbif.org. ¿Cómo frenarlas antes de que sea tarde?
▶️ doi.org/10.1111/ddi.... #CiteTheDOI

Serendipias cangrejeras Hoy os traemos un post escrito por Miguel Clavero (Estación Biológica de Doñana – CSIC) y Alicia Sempere Marín (Universidad de Murcia) donde nos cuentan los entresijos de la preparación de un estud…

Las casualidades nos traen bonitos regalos!

Así ocurrió con la colaboración entre un ecólogo (@chikichanka.bsky.social) y una historiadora del arte (Alicia Sempere), para encontrar los documentos de la importación del cangrejo italiano por Felipe II

ecomandanga.wordpress.com/2025/09/17/s...

We have completed the 3rd year of our monitoring in Río Cachón (Zahara de los, Atunes, S Spain),a highly invaded and constantly changing small estuary.
16 surveys and +400 fyke nets, hundreds of otter scats, to just start learning how complex and fascinating the system is.
@ebdonana.bsky.social

Después de mostrar que la genética muestra que el cangrejo italiano viene de Italia (qué cosa, paper abajo), publicamos nuevo artículo documentando que la introducción de la especie en 1588 fue exitosa
@ebdonana.bsky.social nana.bsky.social @um.es
Artículo OA www.sciencedirect.com/science/arti...

Claw loss and the prey preferences of an invasive crayfish Predator-prey relationships underpin the stability of ecosystems but can be perturbed by numerous factors, such as biological invasions. Crayfish readily colonize new ecosystems and their impacts can ...

Funny experiment in team!! Results recently published in @neobiota.pensoft.net neobiota.pensoft.net/article/1492...

Habemus nuevo astacoartículo en @ecosistemas-aeet.bsky.social
LINK: www.revistaecosistemas.net/index.php/ec...
La genética respalda también el origen italiano de los cangrejos de río
Va hilo
(1/14)
@sergiobedmar.bsky.social @oficialdegui.bsky.social
@ebdonana.bsky.social @eco-aeet.bsky.social

📝Non-Native Species in Aquaculture: Burgeoning Production and Environmental Sustainability Risks doi.org/10.1111/raq.... Finally out! 🥳@rosscuthbert.bsky.social @mkour.bsky.social

Non-native species have accounted for approximately one-third of global annual aquaculture production, with this proportion exceeding 35% nowadays. While offering economic opportunities and sustaining livelihoods, non-native production also pose significant environmental risks.

According to the proportion of species donated and received, Asia and North America were the primary donors of non-native species, while Europe and South America receive a large number of species. Asian species have been extensively translocated both inter- and intra-continentally for aquaculture

This total production is largely driven by a handful of commonly farmed species (see Table 2 in the paper), many of which are farmed outside their native ranges and are recognised as high-risk invaders once established in non-native areas with monetary costs

Over the past decades, production volumes have risen rapidly, with native production being several orders of magnitude higher than its non-native counterpart, but the annual growth rate for non-native species' production (and economic value) is currently surpassed that of native one.

While the production of native fish and molluscs remains higher than that of non-native ones, algae—and especially crustaceans—are predominantly produced outside their native ranges. The latter with a rate of change exceeding 11,000% since 2000 compared to the previous two decades

The majority of production quantity has come from farming species within their native range (67.0% of the total global production; 1160.1 million tonnes), but 33.0% (571.6 million tonnes) has stemmed from the species farmed outside their native range, amounting to USD 1.17 trillion

We used FAO data, species' distributions, and the InvaCost database to quantify the global production and value of non-native farmed species (also native production) and their available monetary costs from 1950 to 2022 🌍🐟🦞

📝Non-Native Species in Aquaculture: Burgeoning Production and Environmental Sustainability Risks doi.org/10.1111/raq.... Finally out! 🥳@rosscuthbert.bsky.social @mkour.bsky.social

Cangrejo rojo: 50 años de la madre de todas las invasiones En 2023 se han cumplido 50 años desde que un aristócrata ideara la introducción de una de las especies invasoras más dañinas de España.

Hoy se cumplen 52 años de la llegada del cangrejo rojo, Procambarus clarkii, a Europa
El 17 de junio de 1973 se liberaron unos 500 ejemplares cerca de Badajoz. Un año más tarde se soltaron unos 7000 en la Marisma del Guadalquivir
Se lio parda
@ebdonana.bsky.social
theconversation.com/cangrejo-roj...