Native fish diversity alters the effects of an invasive species on food webs

Ecology ◽  
2010 ◽  
Vol 91 (10) ◽  
pp. 2965-2974 ◽  
Author(s):  
Michael P. Carey ◽  
David H. Wahl
Keyword(s):  
Invasive Species ◽  
Food Webs ◽  
Native Fish ◽  
Fish Diversity

scholarly journals Keanekaragaman Jenis Ikan di Sepanjang Sungai Boyong – Code Propinsi Daerah Istimewa Yogyakarta

2016 ◽  
Vol 1 (1) ◽  
pp. 21 ◽  
Author(s):  
Tri Trijoko ◽  
Donan Satria Yudha ◽  
Rury Eprilurahman ◽  
Setiawan Silva Pambudi
Keyword(s):  
Fish Fauna ◽  
Native Fish ◽  
Fish Diversity ◽  
Sampling Area ◽  
Anabas Testudineus ◽  
Merapi Volcano ◽  
Starting Point ◽  
Introduced Fishes ◽  
Middle Stream ◽  
Channa Striata

The diversity of freshwater fishes which inhabit in the river of Daerah Istimewa Yogyakarta is not yet well documented. Complete documentation is needed as starting point and continuous research on the fish diversity in DIY. Boyong-Code River flows across the DIY, and it upstream is located on the hillside of Merapi volcano. The Code River upstream is called Boyong River. The research was aimed to acquire data about the diversity of fish fauna along the Boyong-Code River in the DIY. Further, the research purpose is to know which species are rare, potential for aquaculture, and introductive. Samples are taken along the Boyong-Code River starting from upstream to downstream. Samples were collected using Purposive Random Sampling methods with fishnets. Sampling area generally divided into three location i.e., upstream, middle-stream and downstream. Species diversity of fish in the Boyong-Code River is consisted of 24 species, with 5 introductive species. There are eleven native fish species which are potential for cultivation (aquaculture), i.e.: Barbodes binotatus, Mystacoleucus obtusirostris, Rasbora lateristriata, Rasbora argyrotaenia, Barbonymus balleroides, Osteochilus vittatus, Hampala macrolepidota, Anabas testudineus, Channa striata, Clarias leiacanthus and Clarias batrachus. The Boyong-Code River is a decent habitat for fishes. Many introduced fishes starting to invade the Boyong-Code River intentionally or unintentionally by human

Impacts of aquatic invasive species and land use on stream food webs in Kaua’i, Hawai’i.

2014 ◽  
Vol 20 (3) ◽  
pp. 252 ◽  
Author(s):  
Megan Layhee ◽  
Michael P. Marchetti ◽  
Sudeep Chandra ◽  
Tag Engstrom ◽  
Daniel Pickard
Keyword(s):  
Invasive Species ◽  
Food Webs ◽  
Introduced Species ◽  
Human Disturbance ◽  
Habitat Degradation ◽  
Community Change ◽  
Ecological Communities ◽  
Native Populations ◽  
Niche Area ◽  
Stream Food Webs

Anthropogenic disturbance is restructuring ecosystems and changing interactions within ecological communities. On the Hawaiʼian Islands, habitat degradation is linked to the establishment of invasive species; and together these stressors may lead to declining native populations and changes in food webs. In this study we employed stable isotopes to examine the structure of multiple Hawaiʼian stream food webs with varying levels of these stressors to illustrate interactions between native and non-native organisms that may represent drivers of community change. Limahuli stream contains all five species of native Hawaiʼian gobies, has a small number of introduced species, and minimal human disturbance. ʻOpaekaʼa, Hul¯eʼia and Kapaʼa streams are more heavily invaded than Limahuli and have greater human influence. We found increased species richness, increased trophic diversity, and increased total niche area in the more heavily invaded stream food webs relative to Limahuli. We also found non-native predatory species inhabiting top trophic positions in the three more heavily invaded streams and isotope mixing model estimates suggest that several species of non-natives have overlapping prey sources with native gobies in these sites. Lastly, we found that native stream organisms were nearly absent in ʻOpaekaʼa stream which also had the highest percent urban development of the streams sampled. Our results suggest significant trophic changes have occurred as the result of introduced species and possibly related to increased human disturbance.

scholarly journals The off-host survival and viability of a native and non-native fish louse (Argulus, Crustacea: Branchiura)

2011 ◽  
Vol 57 (6) ◽  
pp. 828-835 ◽  
Author(s):  
P.D. Walker ◽  
I.J. Russon ◽  
R. Duijf ◽  
G. Van Der Velde ◽  
S.E. Wendelaar Bonga
Keyword(s):  
Invasive Species ◽  
Survival Time ◽  
Developmental Stages ◽  
Water Bodies ◽  
Effect Of Temperature ◽  
Native Fish ◽  
Abiotic Conditions ◽  
Clear Effect ◽  
Access To Food ◽  
Fish Louse

Abstract Fish ectoparasites are introduced to water bodies or aquaculture systems along with their hosts. Argulid fish lice can survive off-host for a given time, and in spite of quarantine measures might also be introduced via the transfer of water. However, they must cope with varying abiotic conditions without access to food. We investigated the effect of temperature (5 to 28oC) on the off-host survival time of Argulus japonicus, an invasive species which is apparently increasing its distribution, and compared this with the European A. foliaceus. A clear effect of temperature on the off-host survival time of all stages of both species was demonstrated. Larval and juvenile A. japonicus survived up to 9 days at 22oC and in the case of adults up to 13 days at 15oC. By comparison, larval A. foliaceus survived up to 5 days at 15oC, adults up to 14 days at 9oC and juveniles up to 7 days at 9oC and 15oC. Thus, A. japonicus is more resistant to starvation at higher temperatures under controlled off-host conditions and A. foliaceus is more resistant to starvation at lower temperatures. Infectivity of A. japonicus decreased linearly with the time spent off-host after 2 days for larvae and 4 days for adults. Temperature only had a significant effect on the infectivity of both developmental stages after 24 hours off-host between 13–23oC for larvae and 13–18oC for adults. In conclusion both species can potentially survive off-host periods in water transports for up to 13–14 days as adults. Their survival is shorter as larvae. This study demonstrates that transportation of water has the potential to introduce Argulus species.

High prevalence of non-native fish species in a remote region of the Mamberamo River, Indonesia

2020 ◽  
Vol 26 (3) ◽  
pp. 293
Author(s):  
Arif Wibowo ◽  
Dwi Atminarso ◽  
Lee Baumgartner ◽  
Anti Vasemagi
Keyword(s):  
Native Species ◽  
River System ◽  
New Guinea ◽  
Current Status ◽  
Native Fish ◽  
Fish Diversity ◽  
Main River ◽  
Main River Channel ◽  
High Prevalence ◽  
Major River

Indonesian freshwater fish diversity is threatened by human activities such as logging, land clearing, pollution and introduction of non-native species. The latter may pose serious threats to endemic freshwater fauna even in relatively pristine and isolated habitats. One such area, West Papua in the island of New Guinea, is one of the least studied regions in the world and a biodiversity hotspot. The Mamberamo River contains the highest proportion of non-native fish compared to other major river systems in New Guinea. To document this, we conducted a field study to validate and further temporally characterise the fish biodiversity to ascertain its current status. Since the last ichthyological survey 15 years ago, we detected two additional non-native species (Leptobarbus melanopterus and Oreochromis niloticus) that have established in the river system. Moreover, our survey revealed that non-native fish are extremely common in the mid reaches of the Mamberamo River, comprising 74% of total catch, with non-native Barbonymus gonionotus (family Cyprinidae) now established as the dominant species. The biomass of non-native B. gonionotus now exceeds that of all native fish combined in the main river channel. These results highlight the serious threat of invasive species in remote regions that support high levels of endemic biodiversity. Plans for containment, prevention through education programmes, and management are urgently required.

scholarly journals The Silent Threat of Non-native Fish in the Amazon: ANNF Database and Review

2021 ◽  
Vol 9 ◽  
Author(s):  
Carolina Rodrigues da Costa Doria ◽  
Edwin Agudelo ◽  
Alberto Akama ◽  
Bruno Barros ◽  
Mariana Bonfim ◽  
...  
Keyword(s):  
Large Scale ◽  
Poecilia Reticulata ◽  
Management Strategies ◽  
First Record ◽  
Current Data ◽  
Amazon Region ◽  
Native Fish ◽  
Fish Diversity ◽  
Limited Information ◽  
Occurrence Records

Non-native fish (NNF) can threaten megadiverse aquatic ecosystems throughout the planet, but limited information is available for the Amazon Region. In this study we review NNF data in the Amazonian macroregion using spatiotemporal records on the occurrence and the richness of NNF from a collaborative network of 35 regional experts, establishing the Amazon NNF database (ANNF). The NNF species richness was analyzed by river basin and by country, as well as the policies for each geopolitical division for the Amazon. The analysis included six countries (Brazil, Peru, Bolivia, Ecuador, Venezuela, and Colombia), together comprising more than 80% of the Amazon Region. A total of 1314 NNF occurrence records were gathered. The first record of NNF in this region was in 1939 and there has been a marked increase in the last 20 years (2000–2020), during which 75% of the records were observed. The highest number of localities with NNF occurrence records was observed for Colombia, followed by Brazil and Bolivia. The NNF records include 9 orders, 17 families and 41 species. Most of the NNF species are also used in aquaculture (12 species) and in the aquarium trade (12 species). The most frequent NNF detected were Arapaima gigas, Poecilia reticulata and Oreochromis niloticus. The current data highlight that there are few documented cases on NNF in the Amazon, their negative impacts and management strategies adopted. The occurrence of NNF in the Amazon Region represents a threat to native biodiversity that has been increasing “silently” due to the difficulties of large-scale sampling and low number of NNF species reported when compared to other South American regions. The adoption of effective management measures by decision-makers is urgently needed and their enforcement needed to change this alarming trend and help protect the Amazon’s native fish diversity.

scholarly journals Introduction of Southern White River Crayfish (Procambarus zonangulus) to New Brunswick

2021 ◽  
Vol 134 (4) ◽  
pp. 375-378
Author(s):  
Donald F. McAlpine ◽  
Christopher B. Connell ◽  
Pamela D. Seymour
Keyword(s):  
Invasive Species ◽  
New Brunswick ◽  
River System ◽  
Native Fish ◽  
White River ◽  
The Third ◽  
Saint John ◽  
Native Crayfish ◽  
First Time ◽  
Privately Owned

Southern White River Crayfish (Procambarus zonangulus), an aquatic, potentially invasive species, is documented from New Brunswick for the first time. It was found in a small, privately owned, lake in the Saint John River system that was apparently stocked for recreational purposes with non-native fish and the crayfish. Procambarus zonangulus has successfully overwintered at the site for at least a year and, more likely, for several years. This is the third species of non-native crayfish recorded in New Brunswick, joining Spiny-cheeked Crayfish (Faxonius limosus) and Virile Crayfish (Faxonius virilis). This is also the first persisting introduction for the genus Procambarus in Canada of which we are aware.

Paddlefish Management, Propagation, and Conservation in the 21st Century

2009 ◽  
Keyword(s):  
Invasive Species ◽  
Native Species ◽  
Silver Carp ◽  
Negative Influence ◽  
Trophic Levels ◽  
Bighead Carp ◽  
Native Fish ◽  
Central United States ◽  
Restrict Movement ◽  
Negative Interactions

<em>Abstract</em>.—Invasive species are one of the dominant problems fisheries managers face when dealing with management, conservation, or preservation of native fishes. The primary concern is the potential for negative interactions between invasive and native species where the outcome is reduced abundance, fitness, growth, or extirpated native fish species. These negative interactions can come from direct competition for resources, vectors for the spread of disease or parasites, and subtle effects such as altering the flow of energy within and among other trophic levels. Paddlefish <em>Polyodon spathula </em>are not exempt from these threats and may even be at a higher risk because they are endemic to historically lotic systems in the central United States where many invasive species are now becoming established. The most prominent invasive threat to paddlefish may be from fellow filter-feeders bighead carp <em>Hypophthalmichthys nobilis </em>and silver carp <em>H. molitrix </em>because they consume similar food resources, possibly displace other pelagic species, and can also change the plankton community to one that cannot be as efficiently used by paddlefish. These two carp species have had a negative influence on native fish communities in other parts of the world, and have been shown to negatively interact with juvenile paddlefish in North America. Response plans that implement a movement barrier or removal of invasive species may also have ramifications for paddlefish in that they restrict movement patterns or reduce abundances as bycatch through harvest schemes. Gaining insights into potential invasive species threats to paddlefish is critical so that informed decisions can be made to prevent ecological damage from the invasive species while optimizing sustainability of native species.

The uncoupling of trophic food webs by invasive species in Lake Michigan

2005 ◽  
pp. 311-348
Author(s):  
D. Jude ◽  
J. Janssen ◽  
E. Stoermer
Keyword(s):  
Invasive Species ◽  
Food Webs ◽  
Lake Michigan

scholarly journals Invasive species and habitat degradation in Iberian streams: an analysis of their role in freshwater fish diversity loss

2011 ◽  
Vol 21 (1) ◽  
pp. 175-188 ◽  
Author(s):  
Virgilio Hermoso ◽  
Miguel Clavero ◽  
Francisco Blanco-Garrido ◽  
José Prenda
Keyword(s):  
Invasive Species ◽  
Freshwater Fish ◽  
Habitat Degradation ◽  
Fish Diversity ◽  
Diversity Loss
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