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Outa JO, Bhika P, Avenant-Oldewage A. Gastropod invasions in anthropogenically impacted impoundments in South Africa: Tracing their origins and exploring field evidence of parasite spillback and amplification. Int J Parasitol 2024; 54:279-301. [PMID: 38452963 DOI: 10.1016/j.ijpara.2024.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 01/12/2024] [Accepted: 02/29/2024] [Indexed: 03/09/2024]
Abstract
Invasive snails are associated with ecological problems in freshwater bodies worldwide. However, their impact on the transmission of digenean infections remain underreported. In the present study, 1708 specimens representing four snail species were sampled from four impoundments in the Limpopo River system in South Africa. Gyraulus chinensis (Planorbidae), Physella acuta (Physidae) and Pseudosuccinea columella (Lymnaeidae), which are invasive, were found in all the sampling sites. In contrast, the native lymnaeid Radix natalensis occurred at only one study site. Digeneans were observed only from R. natalensis (prevalence = 49%) and Ps. columella (prevalence = 23%). Morphological and genetic analyses revealed four digeneans: Fasciola nyanzae, Orientocreadium sp., Petasiger sp. and Patagifer vioscai. Pseudosuccinea columella was infected by the four digeneans while R. natalensis harboured only Orientocreadium sp. and Petasiger sp. Partial sequences of Orientocreadium sp. from the current study differed from congeners whose DNA data are available on GenBank, by p-distances of at least 1.84 and 2.2% for 28S and the internal transcribed spacer (ITS) rDNA, respectively. Phylogenetic analyses demonstrated that the present species is sister to Orientocreadium batrachoides. Genetic and phylogenetic data based on 28S and ITS rDNA suggested that Petasiger sp. from the present study and isolates of three unidentified Petasiger spp. from Kenya, Hungary and Australia, were representatives of the same species. This is the first known report of Orientocreadium, Petasiger and Patagifer from Ps. columella. The occurrence of F. nyanzae in Ps. columella indicates spillback from R. natalensis. These findings echo the concerns raised in previous studies about the potential role of Ps. columella in the amplification of digenean diseases in its introduced range. Phylogenetic analyses of partial sequences of the cytochrome c oxidase subunit 1 mitochondrial gene (cox1) showed multiple lineages of Ps. columella in North and South America. Pseudosuccinea columella specimens from the present study belong to an invasive genotype that has spread globally and has been reported from Zimbabwe, Egypt, Portugal, Australia, Argentina, Colombia and New Mexico (USA). Physella acuta from the current study had a stronger genetic relationship with isolates from Canada and Iceland, than with isolates from other parts of Africa, suggesting several invasion routes into Africa. This is the first known DNA characterisation of G. chinensis from Africa. Phylogenetic reconstruction indicated multiple exit events of G. chinensis from Asia into Europe and Africa. South African isolates clustered in a recent branch containing isolates from the Czech Republic and Hong Kong, China. Considering the presence of invasive snails in all the sampling sites in the present study, it is necessary to investigate the factors that enhance their establishment and to monitor their effects on the native snail populations.
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Affiliation(s)
- James Omondi Outa
- University of Johannesburg, Department of Zoology, Auckland Park B-2006, Johannesburg, South Africa. https://twitter.com/OutaJames
| | - Parthi Bhika
- University of Johannesburg, Department of Zoology, Auckland Park B-2006, Johannesburg, South Africa
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Liu W, Liu Y, Wei F, Chen J, Zhou L, Yu H, Zhang J, Hu J. NTR-1's essential contribution to asymmetric mating between two sibling nematode Species: Bursaphelenchus xylophilus and B. Mucronatus. Gene 2024; 895:148006. [PMID: 37979950 DOI: 10.1016/j.gene.2023.148006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Revised: 10/29/2023] [Accepted: 11/15/2023] [Indexed: 11/20/2023]
Abstract
The pine-wood invasive species nematode Bursaphelenchus xylophilus causes great forestry damage globally, particularly in Eurasia. B. xylophilus can hybridize with its native sibling, Bursaphelenchus mucronatus, with whom it shares an interestingly asymmetric mating behavior. However, the molecular mechanism underlying interspecific asymmetric mating has yet to be clarified. ntr-1, a nematocin receptor gene, is involved in an oxytocin/vasopressin-like signaling system that can regulate reproduction. Structural analysis using bioinformatics revealed that both Bxy- and Bmu-ntr-1 encode 7TM-GPCR, a conserved sequence. In situ hybridization and qPCR showed that both Bxy- and Bmu-ntr-1 were highly expressed in adult nematodes. Specifically, Bxy-ntr-1 was expressed in the vulva of females and caudal gonad of males, whereas Bmu-ntr-1 was expressed in the postal vulva and uterus of females and the whole gonads of males. Furthermore, RNAi of ntr-1 further demonstrated the biological function of interspecific mating: ntr-1 can regulate mating behavior, lead to male-female specificity, and ultimately result in interspecific differences. In B. mucronatus, ntr-1 influenced male mating more than female mating success, while downregulation of ntr-1 in B. xylophilus resulted in a significant decline in the female mating rate. Competitive tests revealed that the mating rate of the cross significantly declined after downregulation of Bxy♀- and Bmu♂-ntr-1, but no obvious change occurred in the reciprocal cross. Thus, we speculate that ntr-1 may be the key factor behind interspecific asymmetric mating. The current study (1) demonstrated the regulatory function of ntr-1 on mating behavior and (2) theoretically revealed the molecular basis of interspecific asymmetric mating.
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Affiliation(s)
- Wenyi Liu
- College of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Yinru Liu
- College of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Fengyuan Wei
- College of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Jing Chen
- College of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Lifeng Zhou
- College of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China
| | - Hongshi Yu
- College of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China; School of BioSciences, The University of Melbourne, Victoria 3010, Australia
| | - Jiaojiao Zhang
- College of Food and Health, Zhejiang A & F University, Hangzhou 311300, China
| | - Jiafu Hu
- College of Forestry and Biotechnology, Zhejiang A & F University, Hangzhou 311300, China.
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Bérgamo DB, Craveiro N, Magalhães KM, Yogui GT, Soares MO, Zanardi-Lamardo E, Rojas LAV, Lima MCSD, Rosa Filho JS. Tar balls as a floating substrate for long-distance species dispersal. Mar Pollut Bull 2023; 196:115654. [PMID: 37839129 DOI: 10.1016/j.marpolbul.2023.115654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/06/2023] [Accepted: 10/09/2023] [Indexed: 10/17/2023]
Abstract
Recent arrivals of tar balls have been observed in several tropical beaches associated with the oceanic circulation that flows to the Brazilian continental shelf. Between August and September 2022, tar balls were collected in the northeastern coast of Brazil and analyzed. Nearly 90 % of the oils were colonized by barnacles, polychaetes, decapods, and algae. Most rafting organisms were Lepas anserifera with capitulum measuring 0.32 to 22.21 mm. Based on the growth rate of barnacles and the speed of the SEC it was estimated that tar balls were floating since July and August 2022 and traveled a maximum of 1938.82 km. The organisms and tar balls' possible origin is in the international waters, near to the meso-Atlantic ridge, known for oil tanker traffic. The tar balls, in addition to the oil-related impacts, can act as a vector of long-distance species dispersion, and it needs to raise an alert, considering the possible ecological impacts.
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Affiliation(s)
- Davy Barbosa Bérgamo
- Universidade Federal de Pernambuco (UFPE), Centro de Tecnologia e Geociências (CTG), Departamento de Oceanografia (DOCEAN) - Laboratório de Bentos (LABEN), 50670-901 Recife, PE, Brazil.
| | - Nykon Craveiro
- Universidade Federal de Pernambuco (UFPE), Centro de Tecnologia e Geociências (CTG), Departamento de Oceanografia (DOCEAN) - Laboratório de Bentos (LABEN), 50670-901 Recife, PE, Brazil
| | - Karine Matos Magalhães
- Universidade Federal Rural de Pernambuco (UFRPE), Centro de Ciências Biológicas, Departamento de Biologia - Laboratório de Ecossistemas Aquáticos (LEAQUA), 52171- 900 Recife, PE, Brazil
| | - Gilvan Takeshi Yogui
- Universidade Federal de Pernambuco (UFPE), Centro de Tecnologia e Geociências (CTG), Departamento de Oceanografia (DOCEAN) - Laboratório de Compostos Orgânicos em Ecossistemas Costeiros e Marinhos (ORGANOMAR), 50670-901, Recife, PE, Brazil
| | - Marcelo Oliveira Soares
- Universidade Federal do Ceará (UFC) - Instituto de Ciências do Mar (LABOMAR), 60165-081 Fortaleza, CE, Brazil
| | - Eliete Zanardi-Lamardo
- Universidade Federal de Pernambuco (UFPE), Centro de Tecnologia e Geociências (CTG), Departamento de Oceanografia (DOCEAN) - Laboratório de Compostos Orgânicos em Ecossistemas Costeiros e Marinhos (ORGANOMAR), 50670-901, Recife, PE, Brazil
| | - Lino Angel Valcarcel Rojas
- Universidade Federal de Pernambuco (UFPE), Centro de Tecnologia e Geociências (CTG), Departamento de Oceanografia (DOCEAN) - Laboratório de Compostos Orgânicos em Ecossistemas Costeiros e Marinhos (ORGANOMAR), 50670-901, Recife, PE, Brazil
| | - Maria Cecília Santana de Lima
- Universidade Federal Rural de Pernambuco (UFRPE), Centro de Ciências Biológicas, Departamento de Biologia - Laboratório de Ecossistemas Aquáticos (LEAQUA), 52171- 900 Recife, PE, Brazil
| | - José Souto Rosa Filho
- Universidade Federal de Pernambuco (UFPE), Centro de Tecnologia e Geociências (CTG), Departamento de Oceanografia (DOCEAN) - Laboratório de Bentos (LABEN), 50670-901 Recife, PE, Brazil
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Xavier EA, Almeida ACS, Nogueira MM, Vieira LM. Effects of substratum type and orientation on the recruitment of bryozoans in an artificial area of the Western Atlantic. Biofouling 2023; 39:748-762. [PMID: 37791479 DOI: 10.1080/08927014.2023.2262928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 09/20/2023] [Indexed: 10/05/2023]
Abstract
Bryozoans are commonly associated with various artificial structures in marine environments and have been responsible for several bioinvasion events worldwide. Understanding the interactions between bryozoans and artificial structures is therefore essential to prevent the establishment and spread of potential bioinvaders. This study investigated bryozoan recruitment on four different substrates (PET, nautical ropes, metal, and PVC) placed in three orientations (vertical, horizontal facing down and facing up) in an area of the Western Atlantic. In total, 15 species of bryozoans were found. The results revealed significant variations in assemblages' richness, with bryozoans showing a preference for settling on PVC (14 species found) and on the underside of horizontal substrates (15 species found), resulting in the higher representativity observed in this study. Cryptogenic (nine species) and exotic (five species) bryozoans dominated the assemblages in all treatments, indicating that the type of substrate (especially artificial) and its orientation can favor the settlement of bryozoans, particularly non-native species. Therefore, the availability of multiple types of artificial substrates in marine environments should be treated as a cause for concern.
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Affiliation(s)
- Everthon A Xavier
- Laboratório de Estudos de Bryozoa (LAEBry), Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, Brasil
| | - Ana C S Almeida
- Laboratório de Estudos de Bryozoa (LAEBry), Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, Brasil
- Departamento de Zoologia, Instituto de Biologia, Universidade Federal da Bahia, Salvador, BA, Brasil
| | - Marcos M Nogueira
- Departamento de Zoologia, Instituto de Biologia, Universidade Federal da Bahia, Salvador, BA, Brasil
| | - Leandro M Vieira
- Laboratório de Estudos de Bryozoa (LAEBry), Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE, Brasil
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Abstract
Non-indigenous species tend to colonize aquaculture installations, especially when they are near international ports. In addition to the local environmental hazard that colonizing non-indigenous species pose, they can also take advantage of local transport opportunities to spread elsewhere. In this study, we examined the risk of the spread of eight invasive fouling species that are found in mussel farms in southern Brazil. We used ensemble niche models based on worldwide occurrences of these species, and environmental variables (ocean temperature and salinity) to predict suitable areas for each species with three algorithms (Maxent, Random Forest, and Support Vector Machine). As a proxy for propagule pressure, we used the tonnage transported by container ships from Santa Catarina (the main mariculture region) that travel to other Brazilian ports. We found that ports in the tropical states of Pernambuco, Ceará, and Bahia received the largest tonnage, although far from Santa Catarina and in a different ecoregion. The ascidians Aplidium accarense and Didemnum perlucidum are known from Bahia, with a high risk of invasion in the other states. The bryozoan Watersipora subtorquata also has a high risk of establishment in Pernambuco, while the ascidian Botrylloides giganteus has a medium risk in Bahia. Paraná, a state in the same ecoregion as Santa Catarina is likely to be invaded by all species. A second state in this region, Rio Grande do Sul, is vulnerable to A. accarense, the barnacle Megabalanus coccopoma, and the mussel Mytilus galloprovincialis. Climate change is changing species latitudinal distributions and most species will gain rather than lose area in near future (by 2050). As an ideal habitat for fouling organisms and invasive species, aquaculture farms can increase propagule pressure and thus the probability that species will expand their distributions, especially if they are close to ports. Therefore, an integrated approach of the risks of both aquaculture and nautical transport equipment present in a region is necessary to better inform decision-making procedures aiming at the expansion or establishment of new aquaculture farms. The risk maps provided will allow authorities and regional stakeholders to prioritize areas of concern for mitigating the present and future spread of fouling species.
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Affiliation(s)
- Daniel M. Lins
- Ecology and Conservation Graduate Program, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Rosana M. Rocha
- Zoology Department, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
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Xu X, Zhang X, Peng J, Deng Y, Liu Y, Jiang L, Zhao L. Survival and physiological energetics of highly invasive mussels exposed to heatwaves. Mar Environ Res 2023; 187:105948. [PMID: 36931046 DOI: 10.1016/j.marenvres.2023.105948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/08/2023] [Accepted: 03/12/2023] [Indexed: 06/18/2023]
Abstract
The South American mussel, Mytella strigata, is a highly invasive fouling species of great concern along intertidal shores in East and Southeast Asia, posing serious threats to native biodiversity and ecosystems. Intertidal areas, being increasingly attacked by heatwaves over the last decade, are among the most thermally challenging habitats, yet the fate of this highly invasive mussel under scenarios of hotter heatwaves remains unknown. Here, we investigated how M. strigata responded to intensifying heatwaves frequently occurring in the South China Sea. Over 97% of individuals survived the five-day-lasting heatwaves, suggesting their high ability to cope with short-term heatwaves. Virtually unaffected clearance rate and absorption efficiency throughout the course of heatwaves indicate the maintenance of energy acquisition, and significantly decreased respiration rate implies the depression of energy metabolism, generating significant decreases in the O:N ratio when heatwaves occurred. Scope for growth of heatwaves-stressed mussels significantly decreased during initial exposure and then increased over time. These findings indicate the remarkable ability of M. strigata to cope with heatwaves recorded in its invasive habitats and call the attention for the rapid spread of this highly invasive fouling species in the context of climate change.
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Affiliation(s)
- Xin Xu
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | - Xingzhi Zhang
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fisheries Sciences, Nanning, China
| | - Jinxia Peng
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fisheries Sciences, Nanning, China
| | - Yuewen Deng
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | - Yong Liu
- Pearl Research Institute, Guangdong Ocean University, Zhanjiang, China
| | - Linyuan Jiang
- Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Guangxi Academy of Fisheries Sciences, Nanning, China.
| | - Liqiang Zhao
- Fisheries College, Guangdong Ocean University, Zhanjiang, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Guangdong Ocean University, Zhanjiang, China.
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Xu X, Tong Y, Deng Y, Zhao L. Impacts of marine heatwaves on byssus production in highly invasive fouling mussels. Mar Environ Res 2023; 184:105871. [PMID: 36587491 DOI: 10.1016/j.marenvres.2022.105871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/26/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
Marine heatwaves (MHWs) are projected to increase in their frequency, intensity, and duration, causing irreversible and catastrophic consequences for intertidal ecosystems around the world. The highly invasive fouling mussel, Arcuatula senhousia, can cause marked habitat alteration by constructing extremely intense byssal mats, devastating the biodiversity of many intertidal systems, yet very little is known about its fate under conditions of more frequent, hotter and longer MHWs. Here, we assessed impacts of two scenarios of MHWs (low-intensity with 4 °C rise of seawater temperature and high-intensity with 8 °C rise, respectively) on the byssal production of A. senhousia. Mussels exposed to low-intensity MHWs did not show any significant differences in the number, length and diameter of byssal threads, compared with those not thermally stressed. Under high-intensity scenario, the byssus production was significantly depressed, and byssal threads became fewer, shorter and finer, in line with significant decreases in cumulative length and volume. These findings provide a better understanding of responses of invasive fouling mussels such as A. senhousia to MHWs and make a leap forward in linking climate change and biological fouling in marine ecosystems.
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Affiliation(s)
- Xin Xu
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | - Yinhong Tong
- Fisheries College, Guangdong Ocean University, Zhanjiang, China.
| | - Yuewen Deng
- Fisheries College, Guangdong Ocean University, Zhanjiang, China
| | - Liqiang Zhao
- Fisheries College, Guangdong Ocean University, Zhanjiang, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Guangdong Ocean University, Zhanjiang, China; Guangdong Provincial Engineering and Technology Research Center of Far Sea Fisheries Management and Fishing of South China Sea, China.
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Ribeiro B, Padua A, Oliveira BFRD, Puccinelli G, da Costa Fernandes F, Laport MS, Klautau M. Uncovering the Microbial Diversity of Two Exotic Calcareous Sponges. Microb Ecol 2023; 85:737-746. [PMID: 35234997 DOI: 10.1007/s00248-022-01980-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/09/2022] [Indexed: 06/14/2023]
Abstract
Sponges-associated microorganisms play important roles in their health and ecology; consequently, they may be crucial in the successful adaptation of exotic species to novel environments. However, few studies have focused on the microbial diversity of exotic sponges, especially those with calcium carbonate spicules (class Calcarea). Therefore, this is the first in situ characterization of the microbiota of the exotic calcareous sponges Sycettusa hastifera and Paraleucilla magna. Our results suggest that S. hastifera has a more stable microbiota than P. magna, as there were no differences in its beta diversity among sampling sites. Conversely, P. magna showed significant differences in its microbial communities, perhaps related to its adhesion to artificial substrate and/or shellfish mariculture activities. Each sponge species presented a single dominant proteobacterial OTU potentially active in the nitrogen cycle, which could help sponge detoxification, especially in polluted areas where exotic species usually establish. Our results show the importance of assessing the microbial diversity to unveil host-microorganism relationships and suggest that these associated nitrogen-cycling microorganisms could favor the success of exotic sponges in new environments.
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Affiliation(s)
- Bárbara Ribeiro
- Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941902, Brazil
| | - André Padua
- Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941902, Brazil
- Departamento de Biologia Animal, Instituto de Ciências Biológicas E da Saúde, Universidade Federal Rural do Rio de Janeiro, Seropédica, 23897000, Brazil
| | - Bruno Francesco Rodrigues de Oliveira
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941902, Brazil
- Departamento de Microbiologia e Parasitologia, Instituto Biomédico, Universidade Federal Fluminense, Niterói, 24210130, Brazil
| | - Gabriela Puccinelli
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941902, Brazil
| | | | - Marinella Silva Laport
- Departamento de Microbiologia Médica, Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941902, Brazil
| | - Michelle Klautau
- Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941902, Brazil.
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Towne ZW, Judge ML, O’Connor NJ. Intertidal habitat complexity influences the density of the non-native crab Hemigrapsus sanguineus. PeerJ 2023; 11:e15161. [PMID: 37041978 PMCID: PMC10083005 DOI: 10.7717/peerj.15161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/13/2023] [Indexed: 04/13/2023] Open
Abstract
Habitat structural complexity can provide protection from predators, potentially affecting population density of native and non-native prey. The invasive Asian shore crab, Hemigrapsus sanguineus, occurs in variable densities in the rocky intertidal zone of eastern North America and northern Europe, often in densities greater than in its native range. The present study examined the influence of habitat complexity on the density of H. sanguineus. Artificial shelters of concrete pavers with stones arranged in increasing complexity were deployed in the intertidal zone along a rocky shore in southeastern Massachusetts, USA, for 21 consecutive weekly intervals in 2020. Crabs consistently reached the highest densities in the most complex shelters despite their lower internal surface area. In addition, crabs exhibited shelter selectivity based on body size, with large crabs occupying artificial shelters in greater numbers than adjacent natural substrate. In a subsequent lab study, crab activity over 1 h was observed in the presence of the same artificial shelters, under simulated tidal conditions. Shelter complexity had little influence on the number of crabs under the pavers although crabs were more active when submerged in water than exposed to air. These results show that crab density increases as habitat complexity increases, and complexity may serve as a predictor of H. sanguineus density but not short-term behavior.
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Affiliation(s)
- Zachary W. Towne
- Department of Biology, University of Massachusetts at Dartmouth, Dartmouth, Massachusetts, United States
| | - Michael L. Judge
- Department of Biology, Manhattan College, Riverdale, New York, United States
| | - Nancy J. O’Connor
- Department of Biology, University of Massachusetts at Dartmouth, Dartmouth, Massachusetts, United States
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Lolis LA, Miranda RJ, Barros F. The effects of an invasive soft coral on the structure of native benthic communities. Mar Environ Res 2023; 183:105802. [PMID: 36403410 DOI: 10.1016/j.marenvres.2022.105802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Species invasion is a major threat to marine biodiversity and function; thus, studying the effects of recently reported exotic species is extremely important. Several soft coral species (Alcyonacea) have invaded the Atlantic Ocean but their effects are poorly known. Here, we investigated the effects of the invasive species Sarcothelia sp. (Alcyonacea, Xeniidae) on native benthic shallow reef communities in Brazil. We hypothesized that increasing Sarcothelia sp. abundance would be related to species richness decreases and native community structure changes. Multivariate analysis showed significant dissimilarity between invaded (high Sarcothelia sp. abundance) and non-invaded areas (high abundance of the octocoral Neospongodes atlantica and zoantharians). The invaded area showed less species composition variability (i.e., homogenization) than non-invaded ones. Within the invaded area we observed that Sarcothelia sp. abundance reduced species richness. The lowest native benthic richness (10 taxa) was observed in a transect with the highest invader cover, while the transect with the lowest Sarcothelia sp. cover presented 26 native taxa. These findings are likely related to the invasive novel functional traits, i.e., invader growth form and allelochemicals. A clear inverse abundance pattern between invasive Sarcothelia sp. and N. atlantica, indicated an intense competition between octocorals. Our study showed remarkable evidence of negative impacts of invasive soft corals on reef biodiversity. There is an urgent need for experiments evaluating changes in different ecological processes and to implement management actions.
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Affiliation(s)
- Lucas Assumpção Lolis
- Laboratório de Ecologia Bentônica, CIENAM, Instituto de Biologia and INCT Estudos Interdisciplinares e Transdisciplinares em Ecologia e Evolução, Universidade Federal da Bahia, Salvador, Brazil. Rua Barão de Jeremoabo, s/n. Campus Ondina, 40170-115, Salvador, Bahia, Brazil.
| | - Ricardo J Miranda
- Laboratório de Biologia Marinha e Conservação, Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Av. Lourival Melo Mota, s/n, Tabuleiro do Martins, CEP: 57072-900, Maceió, Alagoas, Brazil
| | - Francisco Barros
- Laboratório de Ecologia Bentônica, CIENAM, Instituto de Biologia and INCT Estudos Interdisciplinares e Transdisciplinares em Ecologia e Evolução, Universidade Federal da Bahia, Salvador, Brazil. Rua Barão de Jeremoabo, s/n. Campus Ondina, 40170-115, Salvador, Bahia, Brazil
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Lins DM, Rocha RM. Invasive species fouling Perna perna (Bivalvia: Mytilidae) mussel farms. Mar Pollut Bull 2022; 181:113829. [PMID: 35709680 DOI: 10.1016/j.marpolbul.2022.113829] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
Invasive, fouling species increase management costs and reduce mussel growth, which jeopardizes mariculture. We studied the distribution of eight invasive species in Santa Catarina, the leading mussel producer in Brazil. Our goals were to determine their spatial distribution and prevalence on farm structures (buoys, long lines, and mussel socks), as well as understand the relevance of propagule pressure (recruitment), port distance, and area of the farm in this distribution. Although present in all sites, adult and recruits distribution were spatially restricted, showing that species might have a metapopulation structure. The most prevalent species were the ascidian Styela plicata, the barnacle Megabalanus coccopoma, the bryozoan Schizoporella errata, and the polychaete Branchiomma luctuosum. Recruitment was the main driver of three species distribution while distance to port explained only one species distribution. Based on those results, we discuss policy options, management, and regulation enforcement, that can be used in the mussel aquaculture elsewhere.
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Affiliation(s)
- Daniel M Lins
- Ecology and Conservation Graduate Program, Universidade Federal do Paraná, Brazil.
| | - Rosana M Rocha
- Zoology Department, Universidade Federal do Paraná, Brazil
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Wang G, Ren Y, Wang S, Hou M, Weinberger F. Shifting chemical defence or novel weapons? A review of defence traits in Agarophyton vermiculophyllum and other invasive seaweeds. Mar Life Sci Technol 2022; 4:138-149. [PMID: 37073358 PMCID: PMC10077278 DOI: 10.1007/s42995-021-00109-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 04/27/2021] [Indexed: 05/03/2023]
Abstract
Seaweed bioinvasions increasingly affect coastal environments around the world, which increases the need for predictive models and mitigation strategies. The biotic interactions between seaweed invaders and invaded communities are often considered a key determinant of invasion success and failure and we here revise the current evidence that the capacity of seaweed invaders to deter enemies in newly reached environments correlates with their invasion success. Particularly efficient chemical defences have been described for several of the more problematic seaweed invaders during the last decades. However, confirmed cases in which seaweed invaders confronted un-adapted enemies in newly gained environments with deterrents that were absent from these environments prior to the invasion (so-called "novel weapons") are scarce, although an increasing number of invasive and non-invasive seaweeds are screened for defence compounds. More evidence exists that seaweeds may adapt defence intensities to changing pressure by biological enemies in newly invaded habitats. However, most of this evidence of shifting defence was gathered with only one particular model seaweed, the Asia-endemic red alga Agarophyton vermiculophyllum, which is particularly accessible for direct comparisons of native and non-native populations in common garden experiments. A. vermiculophyllum interacts with consumers, epibionts and bacterial pathogens and in most of these interactions, non-native populations have rather gained than lost defensive capacity relative to native conspecifics. The increases in the few examined cases were due to an increased production of broad-spectrum deterrents and the relative scarcity of specialized deterrents perhaps reflects the circumstance that seaweed consumers and epibionts are overwhelmingly generalists.
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Affiliation(s)
- Gaoge Wang
- Institute of Evolution and Marine Biodiversity, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003 China
| | - Yifei Ren
- Institute of Evolution and Marine Biodiversity, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003 China
| | - Shasha Wang
- Marine Ecology Division, GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
| | - Minglei Hou
- Institute of Evolution and Marine Biodiversity, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003 China
| | - Florian Weinberger
- Marine Ecology Division, GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
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13
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Xavier EA, Almeida ACS, Vieira LM. The role of artificial habitats on fouling bryozoan fauna in the southwestern Atlantic. Mar Pollut Bull 2021; 167:112310. [PMID: 33831702 DOI: 10.1016/j.marpolbul.2021.112310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 06/12/2023]
Abstract
Artificial habitats, such as harbours and marinas, are entry doors for the introduction and dispersal of species. Surveys on fouling community in these habitats help to understand preventing environmental impacts and management of invasive species. Thus, a survey on fouling bryozoan fauna was carried out along 17 artificial habitats (eight harbours and nine marinas) from three coastal stretches in Southwestern Atlantic. A total of 55 species were identified, including 13 non-native, 33 cryptogenic and nine native taxa. Only five bryozoan species were found in more than 75% of sampled sites. Our analysis revealed that bryozoan fouling communities in artificial habitats do not vary significantly between commercial and recreational localities. However, we also found that faunal assemblages varied significantly along Brazilian coastal stretches that are distinguished by environmental conditions, such as salinity and temperature.
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Affiliation(s)
- Everthon A Xavier
- Laboratório de Estudos de Bryozoa - LAEBry, Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE 50670-901, Brazil.
| | - Ana C S Almeida
- Laboratório de Estudos de Bryozoa - LAEBry, Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE 50670-901, Brazil; Museu de História Natural, Setor da Zoologia, Universidade Federal da Bahia, Salvador, BA, 40170-115, Brazil.
| | - Leandro M Vieira
- Laboratório de Estudos de Bryozoa - LAEBry, Departamento de Zoologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE 50670-901, Brazil.
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Tempesti J, Mangano MC, Langeneck J, Lardicci C, Maltagliati F, Castelli A. Non-indigenous species in Mediterranean ports: A knowledge baseline. Mar Environ Res 2020; 161:105056. [PMID: 33070931 DOI: 10.1016/j.marenvres.2020.105056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 06/23/2020] [Accepted: 06/23/2020] [Indexed: 06/11/2023]
Abstract
Port areas have been considered bioinvasion hotspots due to the concentration of several invasion vectors. However, the actual distribution of non-indigenous species (NIS) in Mediterranean ports is still poorly understood. Here we conducted a literature review with the aim to provide a knowledge baseline about NIS distribution in Mediterranean ports. NIS distribution in Mediterranean ports showed a high degree of heterogeneity in terms of studies across the whole basin, with a limited knowledge on both specific taxa and geographical areas, as well as a generally low proportion of investigated ports. The low rate of specific studies designed to monitor these particular environments may represent the main source of knowledge gaps. Mediterranean ports host NIS from all regions of the world, playing a key role in marine bioglobalization. Our synthesis represents the first baseline addressing the presence of NIS in Mediterranean ports, which may be useful to define plans of NIS management and strategies focusing on a network of recognised focal hotspots.
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Affiliation(s)
- Jonathan Tempesti
- Dipartimento di Biologia, Università di Pisa, Via Derna, 1, 56126, Pisa, Italy
| | - Maria Cristina Mangano
- Stazione Zoologica Anton Dohrn, Dipartimento Ecologia Marina Integrata, Sede Interdipartimentale della Sicilia, Lungomare Cristoforo Colombo (complesso Roosevelt), 90142, Palermo, Italy
| | - Joachim Langeneck
- Dipartimento di Biologia, Università di Pisa, Via Derna, 1, 56126, Pisa, Italy
| | - Claudio Lardicci
- Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria, 53, 56126, Pisa, Italy
| | | | - Alberto Castelli
- Dipartimento di Biologia, Università di Pisa, Via Derna, 1, 56126, Pisa, Italy
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García-Gómez JC, Sempere-Valverde J, González AR, Martínez-Chacón M, Olaya-Ponzone L, Sánchez-Moyano E, Ostalé-Valriberas E, Megina C. From exotic to invasive in record time: The extreme impact of Rugulopteryx okamurae (Dictyotales, Ochrophyta) in the strait of Gibraltar. Sci Total Environ 2020; 704:135408. [PMID: 31836226 DOI: 10.1016/j.scitotenv.2019.135408] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/29/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
In 2015, the exotic seaweed Rugulopteryx okamurae was detected for the first time on the south side of the Strait of Gibraltar, in Ceuta (northern Africa). This highly sensitive area is ideal for monitoring local environmental impacts arising from global warming, as well as the intrusion of alien species. Within one year, R. okamurae became an invasive species with an overflowing competitive capacity and growth. In 2015, more than 5000 tons of upstream biomass was extracted from beaches in Ceuta, and it has since spread irrepressibly on rocky illuminated bottoms of the subtidal zone to a maximum observed depth of 40 m. The highest coverage (80-90%) of R. okamurae in Ceuta was observed between 10 and 20 m depth in illuminated habitats, where it was having a severe impact on local benthic communities which were displaced. Between 5 and 30 m depth, coverage of R. okamurae exceeded 70% over a wide variety of substrate types. A submarine sentinel sessile bioindicators permanent quadrats (SBPQ) station installed in 2013 on poorly lit, vertical, and shady substrate in the El Estrecho Natural Park, on the north side of the Strait of Gibraltar (Tarifa), detected the presence of R. okamurae in July 2016 and recorded the subsequent increase in coverage. These findings reveal the useful role of this type of monitoring SBPQ sentinel station for the detection of impacts and exotic species in marine protected areas, and for the monitoring of global warming based on indicator species. We conclude that the catastrophic bloom of R. okamurae exhibited an initial geographical expansion (2015-2017) to the northern coastal area of the Strait of Gibraltar (Tarifa-Gibraltar) and subsequent extension in the south of the Iberian Peninsula, towards the Atlantic coast (2018) and the Mediterranean coast (2019). This bloom could have been associated with the temperature peak in July 2015 and was thus possibly linked to global warming.
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Affiliation(s)
- José Carlos García-Gómez
- Laboratorio de Biología Marina de la Universidad de Sevilla (LBMUS)/Área de Investigación I+D+i del Acuario de Sevilla/Estación de Biología Marina del Estrecho (Ceuta), Spain.
| | - Juan Sempere-Valverde
- Laboratorio de Biología Marina de la Universidad de Sevilla (LBMUS)/Área de Investigación I+D+i del Acuario de Sevilla/Estación de Biología Marina del Estrecho (Ceuta), Spain
| | - Alexandre Roi González
- Laboratorio de Biología Marina de la Universidad de Sevilla (LBMUS)/Área de Investigación I+D+i del Acuario de Sevilla/Estación de Biología Marina del Estrecho (Ceuta), Spain
| | | | - Liliana Olaya-Ponzone
- Laboratorio de Biología Marina de la Universidad de Sevilla (LBMUS)/Área de Investigación I+D+i del Acuario de Sevilla/Estación de Biología Marina del Estrecho (Ceuta), Spain
| | - Emilio Sánchez-Moyano
- Laboratorio de Biología Marina de la Universidad de Sevilla (LBMUS)/Área de Investigación I+D+i del Acuario de Sevilla/Estación de Biología Marina del Estrecho (Ceuta), Spain
| | - Enrique Ostalé-Valriberas
- Laboratorio de Biología Marina de la Universidad de Sevilla (LBMUS)/Área de Investigación I+D+i del Acuario de Sevilla/Estación de Biología Marina del Estrecho (Ceuta), Spain
| | - César Megina
- Biodiversidad y Ecología de Invertebrados Marinos, Universidad de Sevilla/Área de Investigación I+D+i del Acuario de Sevilla, Spain.
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16
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Pierucci A, De La Fuente G, Cannas R, Chiantore M. A new record of the invasive seaweed Caulerpa cylindracea Sonder in the South Adriatic Sea. Heliyon 2019; 5:e02449. [PMID: 31687554 DOI: 10.1016/j.heliyon.2019.e02449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/13/2019] [Accepted: 09/05/2019] [Indexed: 12/19/2022] Open
Abstract
The green alga Caulerpa cylindracea Sonder is one of the most infamous and threatening invasive species in the Mediterranean Sea. Since 1985, it started rapidly spreading to all Mediterranean regions causing many ecological changes on natural communities. In the present study, we present an example of this proliferation with the first record in the Marine Protected Area of Tremiti Island (MPATI) in the South Adriatic Sea. Fifteen sites along the coast and 5 different depths have been investigated. Our results provide eveidence of a wide invasion of this pest in three islands, San Domino, San Nicola and Capraia. This study fills a particular data gap in the ongoing biomonitoring of invasive seaweeds in the Mediterranean Sea representing a base line of this invasive species for the MPATI.
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Abstract
Background Global maritime trade plays an important role in the modern transportation industry. It brings significant economic profit along with bioinvasion risk. Species translocate and establish in a non-native area through ballast water and biofouling. Aiming at aquatic bioinvasion issue, people proposed various suggestions for bioinvasion management. Nonetheless, these suggestions only focus on the chance of a port been affected but ignore the port’s ability to further spread the invaded species. Results To tackle the issues of the existing work, we propose a biosecurity triggering mechanism, where the bioinvasion risk of a port is estimated according to both the invaded risk of a port and its power of being a stepping-stone. To compute the invaded risk, we utilize the automatic identification system data, the ballast water data and marine environmental data. According to the invaded risk of ports, we construct a species invasion network (SIN). The incoming bioinvasion risk is derived from invaded risk data while the invasion risk spreading capability of each port is evaluated by s-core decomposition of SIN. Conclusions We illustrate 100 ports in the world that have the highest bioinvasion risk when the invaded risk and stepping-stone bioinvasion risk are equally treated. There are two bioinvasion risk intensive regions, namely the Western Europe (including the Western European margin and the Mediterranean) and the Asia-Pacific, which are just the region with a high growth rate of non-indigenous species and the area that has been identified as a source for many of non-indigenous species discovered elsewhere (especially the Asian clam, which is assumed to be the most invasive species worldwide).
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Affiliation(s)
- Shengling Wang
- College of Information Science and Technology, Beijing Normal University, Beijing, 100875, China
| | - Chenyu Wang
- College of Information Science and Technology, Beijing Normal University, Beijing, 100875, China
| | - Shenling Wang
- College of Information Science and Technology, Beijing Normal University, Beijing, 100875, China.
| | - Liran Ma
- Department of Computer Science, Texas Christian University, Fort Worth, 298850, TX, USA
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Hede N, Khandeparker L. Influence of Darkness and Aging on Marine and Freshwater Biofilm Microbial Communities Using Microcosm Experiments. Microb Ecol 2018; 76:314-327. [PMID: 29380028 DOI: 10.1007/s00248-018-1149-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 01/15/2018] [Indexed: 06/07/2023]
Abstract
Ballast tank biofilms pose an additional risk of microbial invasion if sloughed off during ballasting operations, yet their significance and invasion biology is poorly understood. In this study, biofilms developed in marine and freshwater locations were exposed to prolonged darkness and aging by mimicking ballast water conditions in the laboratory. Upon prolonged darkness, the decay of phytoplankton, as indicated by the decrease in chlorophyll a in marine biofilms, led to remineralization and enhanced bacterial and protist populations. However, the same trend was not observed in the case of freshwater biofilms wherein the microbial parameters (i.e., bacteria, protists) and chlorophyll a decreased drastically. The bacterial community structure in such conditions was evaluated by real-time quantitative PCR (qPCR), and results showed that the biofilm bacterial communities changed significantly over a period of time. α-Proteobacteria was the most stable taxonomic group in the marine biofilms under dark conditions. However, β-proteobacteria dominated the freshwater biofilms and seemed to play an important role in organic matter remineralization. γ-Proteobacteria, which includes most of the pathogenic genera, were affected significantly and decreased in both the types of biofilms. This study revealed that marine biofilm communities were able to adapt better to the dark conditions while freshwater biofilm communities collapsed. Adaptation of tolerant bacterial communities, regeneration of nutrients via cell lysis, and presence of grazers appeared to be key factors for survival upon prolonged darkness. However, the fate of biofilm communities upon discharge in the new environment and their invasion potential is an important topic for future investigation.
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Affiliation(s)
- Niyati Hede
- CSIR - National Institute of Oceanography, Dona Paula, Goa, 403 004, India
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Fidler AE, Bacq-Labreuil A, Rachmilovitz E, Rinkevich B. Efficient dispersal and substrate acquisition traits in a marine invasive species via transient chimerism and colony mobility. PeerJ 2018; 6:e5006. [PMID: 29915705 PMCID: PMC6004106 DOI: 10.7717/peerj.5006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 05/29/2018] [Indexed: 01/29/2023] Open
Abstract
Over the past three decades the colonial ascidian Didemnum vexillum has been expanding its global range, significantly impacting marine habitats and aquaculture facilities. What biological features make D. vexillum so highly invasive? Here, we show that juxtaposed allogeneic D. vexillum colony fragments (‘ramets’) may, initially, form chimeric entities. Subsequently, zooids of the differing genotypes within such chimeras coordinately retreat away from fusion zones. A few days following such post-fusion retreat movements there is further ramet fission and the formation of zooid-depauperate tunic zones. Using polymorphic microsatellite loci to distinguish between genotypes, we found that they were sectorial at the fusion zones and the subsequent ramet movements resulted in further spatial separation of the paired-genotypes indicating that the fusion events observed did not lead to formation of long-term, stable chimeras. Thus, movements of D. vexillum colony ramets from initial fusion zones lead to progressive segregation of genotypes probably minimizing potential somatic/germ-cell competition/parasitism. We speculate that relatively fast (≤10 mm/day) movement of D. vexillum colonies on substrates along with frequent, and perhaps unrestrained, transient allogeneic fusions play significant roles in this species’ striking invasiveness and capacity to colonize new substrates.
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Affiliation(s)
- Andrew E Fidler
- Institute of Marine Science, University of Auckland, Auckland, New Zealand
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Di Santo V, Jordan HL, Cooper B, Currie RJ, Beitinger TL, Bennett WA. Thermal tolerance of the invasive red-bellied pacu and the risk of establishment in the United States. J Therm Biol 2018; 74:110-115. [PMID: 29801615 DOI: 10.1016/j.jtherbio.2018.03.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Revised: 03/05/2018] [Accepted: 03/18/2018] [Indexed: 11/18/2022]
Abstract
Indigenous red-bellied pacu, Piaractus brachypomus, populations are in decline due to overfishing. Once ignored by aquaculturists because of their perceived low economic value, renewed aquaculture efforts in Central and South America aim to relieve fishing pressures on natural pacu populations. In the southern United States pacu aquaculture for the aquarium trade has raised concerns that accidental release could lead to establishment of overwintering populations outside captivity-a threat accentuated by the average 6 °C increase in shallow-water temperatures predicted by the end of the century. In the present study, Critical and Chronic Thermal Methodology was used to quantify red-bellied pacu thermal tolerance niche requirements. The data suggest that red-belllied pacu are a thermophilic species capable of tolerating low and high chronic temperatures of 16.5 °C and 35 °C, respectively. Critical thermal minimum and maximum temperatures of fish acclimated near their chronic limits are 10.3 and 44.4 °C. Red-bellied pacu aquaculture in the United States is concentrated in subtropical Florida regions that encourage rapid growth and reproduction, but carry an increased risk of establishing reproducing populations in local freshwater systems. The thermal niche data show that the risk of bioinvasion can be reduced or eliminated by adopting an approach whereby aquaculture potential is integrated with environmental temperature constraints.
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Affiliation(s)
- Valentina Di Santo
- Harvard University, Museum of Comparative Zoology, Cambridge, MA 02138, USA.
| | - Heidi L Jordan
- Wright State University, Department of Neuroscience, Cell Biology and Physiology, Dayton, OH 45435, USA
| | - Bruce Cooper
- University of West Florida, Department of Biology, Pensacola, FL 32514, USA
| | | | - Thomas L Beitinger
- University of North Texas, Department of Biological Sciences, Denton, TX 76203, USA
| | - Wayne A Bennett
- University of West Florida, Department of Biology, Pensacola, FL 32514, USA
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Grunenwald CM, Carstensen M, Hildebrand E, Elam J, Laaksonen S, Oksanen A, Gerhold RW. Epidemiology of the lymphatic-dwelling filarioid nematode Rumenfilaria andersoni in free-ranging moose (Alces alces) and other cervids of North America. Parasit Vectors 2016; 9:450. [PMID: 27519789 PMCID: PMC4983095 DOI: 10.1186/s13071-016-1740-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 08/03/2016] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Moose (Alces alces) are a culturally and economically valued species in Minnesota, where the northeast population has decreased by 60 % since 2006. The cause of the decline is currently unclear; however, parasites, predation, and climate change have all been implicated. Nematode parasites are important pathogens in North American moose, potentially causing severe disease and mortality. Recent spread of Rumenfilaria andersoni, a filarioid nematode of moose, has been documented in Finnish cervids; however, little is known about the epidemiology of this parasite in North America. METHODS To investigate the prevalence and distribution of R. andersoni, 584 blood samples were collected from live-captured and dead animals and screened microscopically for the presence of microfilariae using a modified Knott's test. Microfilariae were identified based on morphological characteristics. A subset of Knott's-positive animals was subjected to polymerase chain reaction (PCR) with filarioid-specific primers targeting the first internal transcribed spacer region (ITS-1) of the rRNA gene cluster. RESULTS Rumenfilaria microfilariae were present in 20.5 % of Minnesota moose (n = 352), with slight fluctuations observed over four years. Minnesota white-tailed deer (Odocoileus virginianus) (n = 2) and moose (n = 44) from Alaska, Montana, Washington, Maine, and New Hampshire also harbored R. andersoni, suggesting this parasite occurs widely throughout North American moose herds, and white-tailed deer can serve as a patent host. Sequence analysis of cervid blood (moose, n = 15; white-tailed deer, n = 1) confirmed the identity of R. andersoni and revealed the existence of two distinct clades. Genetic comparisons of R. andersoni isolates from North America and semi-domesticated Finnish reindeer found the two groups to be closely related, supporting previous hypotheses that R. andersoni was recently introduced into Finland by the importation of deer from the United States. CONCLUSIONS To the best of our knowledge these observations represent the first report of R. andersoni within the contiguous United States and reveal this nematode as a common parasite of North American moose and white-tailed deer. Although the implications of R. andersoni infection on moose health is unclear, increased awareness of this parasite will help prevent unintentional introduction of R. andersoni into naïve populations via the translocation of wild and captive cervids.
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Affiliation(s)
- Caroline M. Grunenwald
- Department of Microbiology, University of Tennessee, M409 Walters Life Sciences, Knoxville, TN 37996-0845 USA
| | - Michelle Carstensen
- Minnesota Department of Natural Resources, 500 Lafayette Road, St. Paul, MN 55155-4040 USA
| | - Erik Hildebrand
- Minnesota Department of Natural Resources, 500 Lafayette Road, St. Paul, MN 55155-4040 USA
| | - Jacob Elam
- Department of Microbiology, University of Tennessee, M409 Walters Life Sciences, Knoxville, TN 37996-0845 USA
| | - Sauli Laaksonen
- Department of Veterinary Biosciences, University of Helsinki, Fabianinkatu 33, FI-00014 Helsinki, Finland
| | - Antti Oksanen
- Finnish Food Safety Authority Evira, Production Animal and Wildlife Health Research Unit (FINPAR), Elektroniikkatie 3, FI-90590 Oulu, Finland
| | - Richard W. Gerhold
- Department of Biomedical and Diagnostic Sciences, College of Veterinary Medicine, University of Tennessee, 2407 River Drive, Knoxville, TN 37996 USA
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Jaiswal N, Malhotra A, Malhotra SK. Bioinvasion: a paradigm shift from marine to inland ecosystems. J Parasit Dis 2016; 40:348-58. [PMID: 27413303 DOI: 10.1007/s12639-014-0506-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Accepted: 08/05/2014] [Indexed: 10/24/2022] Open
Abstract
Anisakidosis is one of the most fearsome zoonotic food borne disease in aquaculture. The natural infections by anisakidoids or related variety in freshwater fish are not known, though sporadic experimental reports are available abroad (Butcher and Shamsi 2011). Invasive severity of anisakidoids in fish from Gangetic riverine ecosystems, i.e., in river Ganges at Fatehpur and Allahabad, as well as in river Yamuna at Allahabad, and molecular heterogeneity among these worms have been extensively investigated. The pathways of transmission of non-native alien species due to long distance migratory habits of Rita rita, man-made alterations including dredging in long stretches of the river bed of Ganges to facilitate ballast water transfer mechanism owing to the commercial ship movements between Haldia and Allahabad; and sudden water chemistry (salinity, hardness, alkalinity) alteration (due particularly to rainy period) oriented micro-fauna interchange are identified, and remedial measures suggested.
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Samperio-Ramos G, Olsen YS, Tomas F, Marbà N. Ecophysiological responses of three Mediterranean invasive seaweeds (Acrothamnion preissii, Lophocladia lallemandii and Caulerpa cylindracea) to experimental warming. Mar Pollut Bull 2015; 96:418-423. [PMID: 25986653 DOI: 10.1016/j.marpolbul.2015.05.024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 05/04/2015] [Accepted: 05/12/2015] [Indexed: 06/04/2023]
Abstract
The Mediterranean Sea is a hotspot for invasive species and projected Mediterranean warming might affect their future spreading. We experimentally examined ecophysiological responses to the temperature range 23-31 °C in three invasive seaweeds commonly found in the Mediterranean: Acrothamnion preissii, Caulerpa cylindracea and Lophocladia lallemandii. The warming range tested encompassed current and projected (for the end of 21st Century) maximum temperatures for the Mediterranean Sea. Optimal ecophysiological temperatures for A. preissii, C. cylindracea and L. lallemandii were 25 °C, 27 °C and 29 °C, respectively. Warming below the optimal temperatures enhanced RGR of all studied invasive seaweeds. Although sensitive, seaweed photosynthetic yield was less temperature-dependent than growth. Our results demonstrate that temperature is a key environmental parameter in regulating the ecophysiological performance of these invasive seaweeds and that Mediterranean warming conditions may affect their invasion trajectory.
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Affiliation(s)
- Guillermo Samperio-Ramos
- Department of Global Change Research, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avançats, Miquel Marquès 21, 07190 Esporles, Illes Balears, Spain; Universidad de Las Palmas de Gran Canaria (ULPGC), Facultad de Ciencias del Mar, 35017 Las Palmas de Gran Canaria, Spain
| | - Ylva S Olsen
- The UWA Oceans Institute and School of Plant Biology, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Fiona Tomas
- Department of Ecology and Marine Resources, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avançats, Miquel Marquès 21, 07190 Esporles, Illes Balears, Spain; Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Corvallis 97331, OR, USA
| | - Núria Marbà
- Department of Global Change Research, IMEDEA (CSIC-UIB), Institut Mediterrani d'Estudis Avançats, Miquel Marquès 21, 07190 Esporles, Illes Balears, Spain.
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Costa TJF, Pinheiro HT, Teixeira JB, Mazzei EF, Bueno L, Hora MSC, Joyeux JC, Carvalho-Filho A, Amado-Filho G, Sampaio CLS, Rocha LA. Expansion of an invasive coral species over Abrolhos Bank, Southwestern Atlantic. Mar Pollut Bull 2014; 85:252-253. [PMID: 24975092 DOI: 10.1016/j.marpolbul.2014.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 06/02/2014] [Accepted: 06/03/2014] [Indexed: 06/03/2023]
Abstract
Invasive coral species of the genus Tubastraea have been increasingly recorded in Southwestern Atlantic waters since the 1980s. Their invasion and infestation are mainly related to port and oil exploration activities. For the first time the presence of Tubastraea tagusensis colonies is reported in Espírito Santo State, colonizing a port shore area, and incrusting oil/gas platform structures situated in the southern Abrolhos Bank, which is part of the most important coral reef system of the South Atlantic Ocean. Tubastraea colonies exhibit fast growth and high recruitment rates, and colonized 40% of the analyzed structures in just four years. The projection of port and oil/gas industry growth for the Espírito Santo State (more than 300%) highlights an alert to the dispersal of this alien species to natural areas.
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Affiliation(s)
- Thiago J F Costa
- Associação Ambiental Voz da Natureza, Av. Cel. Schwab Filho 104/501, Vitória, Espírito Santo 29050-780, Brazil.
| | - Hudson T Pinheiro
- Associação Ambiental Voz da Natureza, Av. Cel. Schwab Filho 104/501, Vitória, Espírito Santo 29050-780, Brazil; Ecology and Evolutionary Biology Department, University of California Santa Cruz, Santa Cruz, CA 95060, USA; California Academy of Sciences, San Francisco, CA 94118, USA
| | - João Batista Teixeira
- Associação Ambiental Voz da Natureza, Av. Cel. Schwab Filho 104/501, Vitória, Espírito Santo 29050-780, Brazil; Universidade Estadual de Santa Cruz, Ilhéus, Bahia 45662-900, Brazil
| | - Eric F Mazzei
- Associação Ambiental Voz da Natureza, Av. Cel. Schwab Filho 104/501, Vitória, Espírito Santo 29050-780, Brazil; Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Vitória, Espírito Santo 29090-600, Brazil
| | - Leonardo Bueno
- Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Vitória, Espírito Santo 29090-600, Brazil
| | - Mike S C Hora
- Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Vitória, Espírito Santo 29090-600, Brazil
| | - Jean-Christophe Joyeux
- Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Vitória, Espírito Santo 29090-600, Brazil
| | | | - Gilberto Amado-Filho
- Instituto de Pesquisas Jardim Botânico do Rio de Janeiro, Rio de Janeiro 22460-030, Brazil
| | - Claudio L S Sampaio
- Universidade Federal de Alagoas, Unidade de Ensino Penedo, Penedo, Alagoas 57200-000, Brazil
| | - Luiz A Rocha
- Ecology and Evolutionary Biology Department, University of California Santa Cruz, Santa Cruz, CA 95060, USA; California Academy of Sciences, San Francisco, CA 94118, USA
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Veiga P, Torres AC, Rubal M, Troncoso J, Sousa-Pinto I. The invasive kelp Undaria pinnatifida (Laminariales, Ochrophyta) along the north coast of Portugal: distribution model versus field observations. Mar Pollut Bull 2014; 84:363-5. [PMID: 24910185 DOI: 10.1016/j.marpolbul.2014.05.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/08/2014] [Accepted: 05/14/2014] [Indexed: 06/03/2023]
Abstract
After the first report of Undaria pinnatifida in north Portugal (between 1999 and 2007), a rapid spread of this species could be expected due to the presence of a stable population and the favourable environmental conditions proposed by distribution models. However, field surveys showed that U. pinnatifida was not present in most of the rocky shores in north Portugal. It seems that U. pinnatifida cannot outcompete native species outside of marinas in north Portugal. The only population in natural rocky shores was found in Buarcos, where this species was frequent. This study provides density data of U. pinnatifida that will be useful in the future to monitor changes on its abundance and distribution in the centre and south of Portugal.
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Affiliation(s)
- P Veiga
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Via Panoramica 36, 4150-564 Porto, Portugal.
| | - A C Torres
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Via Panoramica 36, 4150-564 Porto, Portugal
| | - M Rubal
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Via Panoramica 36, 4150-564 Porto, Portugal; Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Campus de As Lagoas, 36310 Vigo, Spain
| | - J Troncoso
- Departamento de Ecoloxía e Bioloxía Animal, Universidade de Vigo, Campus de As Lagoas, 36310 Vigo, Spain
| | - I Sousa-Pinto
- CIIMAR/CIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Department of Biology, Faculty of Sciences, University of Porto, Via Panoramica 36, 4150-564 Porto, Portugal
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Iketani G, Pimentel L, Silva-Oliveira G, Maciel C, Valenti W, Schneider H, Sampaio I. The history of the introduction of the giant river prawn, Macrobrachium cf. rosenbergii (Decapoda, Palaemonidae), in Brazil: New insights from molecular data. Genet Mol Biol 2011; 34:142-51. [PMID: 21637558 PMCID: PMC3085361 DOI: 10.1590/s1415-47572010005000115] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Accepted: 07/26/2010] [Indexed: 11/21/2022] Open
Abstract
The giant river prawn, Macrobrachium cf. rosenbergii, is one of the most cultivated freshwater prawns in the world and has been introduced into more than 40 countries. In some countries, this prawn is considered an invasive species that requires close monitoring. Recent changes in the taxonomy of this species (separation of M. rosenbergii and M. dacqueti) require a re-evaluation of introduced taxa. In this work, molecular analyses were used to determine which of these two species was introduced into Brazil and to establish the geographic origin of the introduced populations that have invaded Amazonian coastal waters. The species introduced into Brazil was M. dacqueti through two introduction events involving prawns originating from Vietnam and either Bangladesh or Thailand. These origins differ from historical reports of the introductions and underline the need to confirm the origin of other exotic populations around the world. The invading populations in Amazonia require monitoring not only because the biodiversity of this region may be affected by the introduction, but also because admixture of different native haplotypes can increase the genetic variability and the likelihood of persistence of the invading species in new habitats.
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Affiliation(s)
- Gabriel Iketani
- Laboratório de Genética e Biologia Molecular, Instituto de Estudos Costeiros Universidade Federal do Pará, Campus de Bragança, Bragança, PA, Brazil
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