Next Article in Journal
Neural Network Approach to Retrieving Ocean Subsurface Temperatures from Surface Parameters Observed by Satellites
Next Article in Special Issue
Scientific Methods to Understand Fish Population Dynamics and Support Sustainable Fisheries Management
Previous Article in Journal
Did the Construction of the Bhumibol Dam Cause a Dramatic Reduction in Sediment Supply to the Chao Phraya River?
Previous Article in Special Issue
Fish Rescue during Streamflow Intermittency May Not Be Effective for Conservation of Rio Grande Silvery Minnow
 
 
Article

Plasticity in Reproductive Traits, Condition and Energy Allocation of the Non-Native Pyrenean Gudgeon Gobio lozanoi in a Highly Regulated Mediterranean River Basin

1
Department of Zoology and Physical Anthropology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
2
Department of Physiology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: José Maria Santos
Water 2021, 13(3), 387; https://doi.org/10.3390/w13030387
Received: 18 December 2020 / Revised: 24 January 2021 / Accepted: 29 January 2021 / Published: 2 February 2021
(This article belongs to the Special Issue Ecology and Conservation of Freshwater Fishes Biodiversity)
The invasion success of non-native fish, such as Pyrenean gudgeon Gobio lozanoi in several Iberian rivers, is often explained by the expression of its life history traits. This study provides the first insights into the reproductive traits, fish condition, and energy allocation (protein and lipid contents of tissues) of this species, along a longitudinal gradient in one of the most regulated river basins in the Iberian Peninsula, the Segura river. Larger sizes of first maturity, higher fecundity and larger oocytes were found in fluvial sectors with the most natural flow regimes, characterised by a low base flow with high flow peaks in spring and autumn. A delay in the reproductive period, lower fish condition and no differences in sex-ratio were observed in fluvial sectors with a high increase in base flow and notable inversion in the seasonal pattern of flow regime. Lipid contents in the liver and gonads were stable during the reproductive cycle and decreases in muscle were noted, whereas ovarian and liver proteins increased. In relation to energy allocation for G. lozanoi, an intermediate energy strategy was observed between income and capital breeding. Our results support the hypothesis that the high plasticity of G. lozanoi population traits plays a significant role in its success in a highly regulated Mediterranean river basin. Understanding the mechanisms by which flow regulation shapes fish populations in Mediterranean type-rivers could inform management actions. View Full-Text
Keywords: energy allocation; fecundity; flow regulation; Mediterranean-type river cyprinids; invasive fish energy allocation; fecundity; flow regulation; Mediterranean-type river cyprinids; invasive fish
Show Figures

Figure 1

MDPI and ACS Style

Amat-Trigo, F.; Torralva, M.; González-Silvera, D.; Martínez-López, F.J.; Oliva-Paterna, F.J. Plasticity in Reproductive Traits, Condition and Energy Allocation of the Non-Native Pyrenean Gudgeon Gobio lozanoi in a Highly Regulated Mediterranean River Basin. Water 2021, 13, 387. https://doi.org/10.3390/w13030387

AMA Style

Amat-Trigo F, Torralva M, González-Silvera D, Martínez-López FJ, Oliva-Paterna FJ. Plasticity in Reproductive Traits, Condition and Energy Allocation of the Non-Native Pyrenean Gudgeon Gobio lozanoi in a Highly Regulated Mediterranean River Basin. Water. 2021; 13(3):387. https://doi.org/10.3390/w13030387

Chicago/Turabian Style

Amat-Trigo, Fátima, Mar Torralva, Daniel González-Silvera, Francisco Javier Martínez-López, and Francisco José Oliva-Paterna. 2021. "Plasticity in Reproductive Traits, Condition and Energy Allocation of the Non-Native Pyrenean Gudgeon Gobio lozanoi in a Highly Regulated Mediterranean River Basin" Water 13, no. 3: 387. https://doi.org/10.3390/w13030387

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop