Feeding ecology and habitat of the threespine stickleback, <i>Gasterosteus aculeatus microcephalus</i>, in a remnant population of northwestern Baja California, México

Sánchez-Gonzáles, Sergio; Ruíz-Campos, Gorgonio; Contreras‐Balderas, Salvador

doi:10.1034/j.1600-0633.2001.100401.x

Cited by 26 publications

(32 citation statements)

References 16 publications

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“…Thus, this study confirms previous research indicating that three-spine stickleback feeds almost exclusively on aquatic invertebrates (Sánchez-Gonzáles et al, 2001;Copp & Kovác, 2003). Actually, results of trait analysis in this study are in accordance with the bottom-feeder behaviour found in previous studies (Ranta & Kaitala, 1991;Hart, 2003).…”

Section: Discussionsupporting

confidence: 92%

Feeding habits of four sympatric fish species in the Iberian Peninsula: keys to understanding coexistence using prey traits

Sánchez‐Hernández

Vieira‐Lanero²,

Servia

et al. 2011

Hydrobiologia

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Trophic interactions are important factors structuring animal communities. We assessed the trophic relations of four fish species that live in sympatry in the River Ladra (NW Spain), and cluster analysis differentiated two feeding strategies: (1) species with omnivorous feeding habits, feeding mainly on detritus and plant material but with aquatic macroinvertebrates as an important complement (Achondrostoma arcasii and Pseudochondrostoma duriense) and (2) species feeding mainly (Salmo trutta) or exclusively (Gasterosteus gymnurus) on aquatic macroinvertebrates. Concerning ingested macroinvertebrates, the trophic overlap was quantified using Schoener's index and the results obtained revealed a high diet overlap among the species (from 81.3 up to 99.2%). In order to get a deeper insight into mechanisms of fish species coexistence, we used ten biological and ecological traits of macroinvertebrate prey to discriminate feeding preferences. As a result, despite the high similarity among the diets, our analyses suggest that differences in diel activity patterns and drift behaviour of preys, as well as differences in the prey size, are important adaptive features that may reduce the inter-specific competition in the fish community and permit the partitioning of food that allows coexistence.

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Section: Discussionsupporting

confidence: 92%

Feeding habits of four sympatric fish species in the Iberian Peninsula: keys to understanding coexistence using prey traits

Sánchez‐Hernández

Vieira‐Lanero²,

Servia

et al. 2011

Hydrobiologia

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“…Körner and Dugdale (2003) showed a switch of fish to periphyton-scraping invertebrates at low zooplankton abundance. In our experiment, in all countries except Greece, we used sticklebacks, a bottom-feeder that essentially feeds on plankton and benthic prey (Sánchez-Gonzáles et al 2001). However, periphyton biomass was highest in Greece where mosquitofish were used instead of sticklebacks.…”

Section: Discussionmentioning

confidence: 99%

Effects of water temperature on summer periphyton biomass in shallow lakes: a pan-European mesocosm experiment

et al. 2015

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Periphyton communities play an important role in shallow lakes and are controlled by direct forces such as temperature, light, nutrients, and invertebrate grazing, but also indirectly by planktivorous fish predation. We performed a pan-European lake mesocosm experiment on periphyton colonization covering five countries along a north/south geographical/temperature gradient (Estonia, Germany, Czech Republic, Turkey, and Greece). Periphyton biomass on artificial polypropylene strips exposed at 50 cm water depth at low and high nutrient regimes (with mean total phosphorus concentration of 20 and 65 lg L -1 , respectively) was compared during mid-summer. No significant effect of nutrient loading on periphyton biomass was observed as nutrient concentrations in the mesocosms were generally above limiting values. Water temperature significantly enhanced summer periphyton biomass development. Additionally, direct and indirect top-down control of snails and fish emerged as a significant factor in periphyton biomass control.

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“…C ranges from 0 (no habitat overlap) to 1 (full habitat overlap). Overlap is generally considered significant when C exceeds or equals 0.60 (Zaret and Rand, 1971;Sµnchez-Gonzµles et al, 2001). Microhabitat types were defined as all possible combinations of depth (two categories, i.e.…”

Section: Discussionmentioning

confidence: 99%

Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis

Santos¹,

Ferreira²

2008

Aquat. Sci.

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Over the last decade there has been a major rise in the number of attempts at fish conservation and management as a response to the widespread degradation of aquatic ecosystems. The assessments involved are rarely planned and executed with inputs from the species life history, particularly their microhabitat use over space and time. The seasonal and sizerelated microhabitat use of two critically endangered cyprinids -the Iberian nase Iberochondrostoma almacai and Iberian chub Squalius aradensis -was examined at seven sites across four small catchments in southwest Portugal. Both species displayed nonrandom microhabitat use. In autumn, nase preferred more sheltered (> 50 % cover) habitats with small substrata (organic cover and silt) than in summer, while chub were found to occupy significantly fasterflowing habitats areas (> 10 cm/s) with coarser substrata (> 50 mm particle size) in the spring than in the rest of the year. Size-related analyses indicated that young-of-year (yoy) nase used coarser substrata (> 5 mm particle size) and more exposed habitats (< 50 % cover) than adult nase. Adult chub, on the other hand, occupied coarser substrata (> 50 mm particle size) and faster-flowing areas (> 10 cm/s) than yoy and juveniles. Based on these findings, it was possible to assign the species to ecological guilds and to classify them as limnophilic (nase) and eurytopic and lithophilic (chub). Both species generally occupied distinct microhabitats, although resource-use overlap was significant in summer. During this season, overlap was found between yoy nase and chub, juvenile nase and juvenile/adult chub, and between adults of both species. The present study identified key factors in the species habitat requirements and helped develop management recommendations for river restoration that may have a wider application, particularly for other Mediterraneantype rivers.

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Feeding ecology and habitat of the threespine stickleback, Gasterosteus aculeatus microcephalus, in a remnant population of northwestern Baja California, México

Cited by 26 publications

References 16 publications

Feeding habits of four sympatric fish species in the Iberian Peninsula: keys to understanding coexistence using prey traits

Feeding habits of four sympatric fish species in the Iberian Peninsula: keys to understanding coexistence using prey traits

Effects of water temperature on summer periphyton biomass in shallow lakes: a pan-European mesocosm experiment

Microhabitat use by endangered Iberian cyprinids nase Iberochondrostoma almacai and chub Squalius aradensis

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