1
|
Winston M, Fuller K, Neilson BJ, Donovan MK. Complex drivers of invasive macroalgae boom and bust in Kāne'ohe Bay, Hawai'i. MARINE POLLUTION BULLETIN 2023; 197:115744. [PMID: 37951125 DOI: 10.1016/j.marpolbul.2023.115744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 10/26/2023] [Accepted: 10/31/2023] [Indexed: 11/13/2023]
Abstract
Invasive macroalgae Eucheuma sp. and Kappaphycus spp. (E/K) became a dominant benthic feature in Kāne'ohe Bay throughout the past four decades - occurring on up to 74 ha of reef area and growing up to three meters thick, which prompted intensive management action. In 2013, E/K cover began decreasing at managed and unmanaged sites. This study examined the extent and timing of the E/K decline and evaluated environmental and ecological drivers beyond management contributing to the decline. E/K continued to recede into 2017 and remains sparse in Kāne'ohe Bay today. Increasing over the sampling period, herbivore biomass was negatively correlated with E/K cover, and other significant, non-linear relationships emerged between E/K cover and coral cover, sea surface temperature, wind, and rainfall. This study uncovers several possible mechanisms explaining a boom and bust in E/K abundance, emphasizes the importance of herbivory, and highlights the resilience of coral reefs in Kāne'ohe Bay.
Collapse
Affiliation(s)
- Morgan Winston
- School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ 85281, USA; Center for Global Discovery and Conservation Science, Arizona State University, Hilo, HI, USA 96720.
| | - Kimberly Fuller
- State of Hawai'i Division of Aquatic Resources, Honolulu, HI 96813, USA
| | - Brian J Neilson
- State of Hawai'i Division of Aquatic Resources, Honolulu, HI 96813, USA
| | - Mary K Donovan
- School of Geographical Sciences and Urban Planning, Arizona State University, Tempe, AZ 85281, USA; Center for Global Discovery and Conservation Science, Arizona State University, Hilo, HI, USA 96720
| |
Collapse
|
2
|
DiBattista JD, Liu SYV, De Brauwer M, Wilkinson SP, West K, Koziol A, Bunce M. Gut content metabarcoding of specialized feeders is not a replacement for environmental DNA assays of seawater in reef environments. PeerJ 2023; 11:e16075. [PMID: 37790632 PMCID: PMC10542274 DOI: 10.7717/peerj.16075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/20/2023] [Indexed: 10/05/2023] Open
Abstract
In tropical marine ecosystems, the coral-based diet of benthic-feeding reef fishes provides a window into the composition and health of coral reefs. In this study, for the first time, we compare multi-assay metabarcoding sequences of environmental DNA (eDNA) isolated from seawater and partially digested gut items from an obligate corallivore butterflyfish (Chaetodon lunulatus) resident to coral reef sites in the South China Sea. We specifically tested the proportional and statistical overlap of the different approaches (seawater vs gut content metabarcoding) in characterizing eukaryotic community composition on coral reefs. Based on 18S and ITS2 sequence data, which differed in their taxonomic sensitivity, we found that gut content detections were only partially representative of the eukaryotic communities detected in the seawater based on low levels of taxonomic overlap (3 to 21%) and significant differences between the sampling approaches. Overall, our results indicate that dietary metabarcoding of specialized feeders can be complimentary to, but is no replacement for, more comprehensive environmental DNA assays of reef environments that might include the processing of different substrates (seawater, sediment, plankton) or traditional observational surveys. These molecular assays, in tandem, might be best suited to highly productive but cryptic oceanic environments (kelp forests, seagrass meadows) that contain an abundance of organisms that are often small, epiphytic, symbiotic, or cryptic.
Collapse
Affiliation(s)
- Joseph D. DiBattista
- School of Molecular and Life Sciences, Curtin University, Perth, WA, Australia
- Australian Museum Research Institute, Australian Museum, Sydney, NSW, Australia
| | - Shang Yin Vanson Liu
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | | | - Shaun P. Wilkinson
- School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Katrina West
- CSIRO Australian National Fish Collection, CSIRO, Hobart, TAS, Australia
| | - Adam Koziol
- School of Molecular and Life Sciences, Curtin University, Perth, WA, Australia
- Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark
| | - Michael Bunce
- Institute of Environmental Science and Research, Kenepuru, Porirua, New Zealand
| |
Collapse
|
3
|
Eggertsen M, Tano SA, Chacin DH, Eklöf JS, Larsson J, Berkström C, Buriyo AS, Halling C. Different environmental variables predict distribution and cover of the introduced red seaweed Eucheuma denticulatum in two geographical locations. Biol Invasions 2020. [DOI: 10.1007/s10530-020-02417-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AbstractIn this study we examined abiotic and biotic factors that could potentially influence the presence of a non-indigenous seaweed, Eucheuma denticulatum, in two locations, one outside (Kane’ohe Bay, Hawai’i, USA) and one within (Mafia Island, Tanzania) its natural geographical range. We hypothesized that the availability of hard substrate and the amount of wave exposure would explain distribution patterns, and that higher abundance of herbivorous fishes in Tanzania would exert stronger top–down control than in Hawai’i. To address these hypotheses, we surveyed E. denticulatum in sites subjected to different environmental conditions and used generalized linear mixed models (GLMM) to identify predictors of E. denticulatum presence. We also estimated grazing intensity on E. denticulatum by surveying the type and the amount of grazing scars. Finally, we used molecular tools to distinguish between indigenous and non-indigenous strains of E. denticulatum on Mafia Island. In Kane’ohe Bay, the likelihood of finding E. denticulatum increased with wave exposure, whereas on Mafia Island, the likelihood increased with cover of coral rubble, and decreased with distance from areas of introduction (AOI), but this decrease was less pronounced in the presence of coral rubble. Grazing intensity was higher in Kane’ohe Bay than on Mafia Island. However, we still suggest that efforts to reduce non-indigenous E. denticulatum should include protection of important herbivores in both sites because of the high levels of grazing close to AOI. Moreover, we recommend that areas with hard substrate and high structural complexity should be avoided when farming non-indigenous strains of E. denticulatum.
Collapse
|
4
|
Gache C, Bertucci F, Guerra AS, Calandra M, Berr T, Lafaye J, Jorissen H, Nugues M, Cossy J, Lecchini D. Effects of Asparagopsis taxiformis metabolites on the feeding behaviour of post-larval Acanthurus triostegus. JOURNAL OF FISH BIOLOGY 2019; 95:1355-1358. [PMID: 31568585 DOI: 10.1111/jfb.14140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 09/14/2019] [Indexed: 06/10/2023]
Abstract
Our study highlights the effect of the macroalgae Asparagopsis taxiformis on the feeding behaviour of the tropical surgeonfish Acanthurus triostegus. The presence of A. taxiformis chemical cues reduced A. triostegus feeding, suggesting that the presence of this algae could affect not only the survival of fish in the post-larval stage, but also alter the grazing pressure on coral reefs.
Collapse
Affiliation(s)
- Camille Gache
- PSL Research University: EPHE-UPVD-CNRS, USR3278 CRIOBE, Papetoai, Moorea, French Polynesia
- Laboratoire d'Excellence "CORAIL", Perpignan Cedex, France
| | - Frédéric Bertucci
- Laboratoire d'Excellence "CORAIL", Perpignan Cedex, France
- Functional and Evolutionary Morphology Laboratory, University of Liège, Liège, Belgium
- Unité FRE BOREA, MNHN, CNRS 7208, Sorbonne University, IRD 207, University Caen Normandy, University of French West Indies, Guadeloupe, France
| | - Ana Sofía Guerra
- Department of Ecology, Evolution and Marine Biology, University of California Santa Barbara, Santa Barbara, California, USA
| | - Maelle Calandra
- PSL Research University: EPHE-UPVD-CNRS, USR3278 CRIOBE, Papetoai, Moorea, French Polynesia
- Ecole Pratique des Hautes Etudes, CREDO UMR 7308 (AMU-EHESS-CNRS), Aix-Marseille Université, Marseille, France
| | - Tristan Berr
- Ecole Normale Supérieure de Lyon, Lyon Cedex 07, France
| | - Julie Lafaye
- PSL Research University: Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS, PSL University, Paris, France
| | - Hendrikje Jorissen
- PSL Research University: EPHE-UPVD-CNRS, USR3278 CRIOBE, Papetoai, Moorea, French Polynesia
- Laboratoire d'Excellence "CORAIL", Perpignan Cedex, France
| | - Maggy Nugues
- PSL Research University: EPHE-UPVD-CNRS, USR3278 CRIOBE, Papetoai, Moorea, French Polynesia
- Laboratoire d'Excellence "CORAIL", Perpignan Cedex, France
| | - Janine Cossy
- PSL Research University: Molecular, Macromolecular Chemistry and Materials, ESPCI Paris, CNRS, PSL University, Paris, France
| | - David Lecchini
- PSL Research University: EPHE-UPVD-CNRS, USR3278 CRIOBE, Papetoai, Moorea, French Polynesia
- Laboratoire d'Excellence "CORAIL", Perpignan Cedex, France
| |
Collapse
|
5
|
Neilson BJ, Wall CB, Mancini FT, Gewecke CA. Herbivore biocontrol and manual removal successfully reduce invasive macroalgae on coral reefs. PeerJ 2018; 6:e5332. [PMID: 30123695 PMCID: PMC6087420 DOI: 10.7717/peerj.5332] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 07/06/2018] [Indexed: 11/22/2022] Open
Abstract
Invasive macroalgae pose a serious threat to coral reef biodiversity by monopolizing reef habitats, competing with native species, and directly overgrowing, and smothering reef corals. Several invasive macroalgae (Eucheuma clade E, Kappaphycus clade A and B, Gracilaria salicornia, and Acanthophora spicifera) are established within Kāne‘ohe Bay (O‘ahu, Hawai‘i, USA), and reducing invasive macroalgae cover is a coral reef conservation and management priority. Invasive macroalgae control techniques, however, are limited and few successful large-scale applications exist. Therefore, a two-tiered invasive macroalgae control approach was designed, where first, divers manually remove invasive macroalgae (Eucheuma and Kappaphycus) aided by an underwater vacuum system (“The Super Sucker”). Second, hatchery-raised juvenile sea urchins (Tripneustes gratilla), were outplanted to graze and control invasive macroalgae regrowth. To test the effectiveness of this approach in a natural reef ecosystem, four discrete patch reefs with high invasive macroalgae cover (15–26%) were selected, and macroalgae removal plus urchin biocontrol (treatment reefs, n = 2), or no treatment (control reefs, n = 2), was applied at the patch reef-scale. In applying the invasive macroalgae treatment, the control effort manually removed ∼19,000 kg of invasive macroalgae and ∼99,000 juvenile sea urchins were outplanted across to two patch reefs, totaling ∼24,000 m2 of reef area. Changes in benthic cover were monitored over 2 years (five sampling periods) before-and-after the treatment was applied. Over the study period, removal and biocontrol reduced invasive macroalgae cover by 85% at treatment reefs. Our results show manual removal in combination with hatchery raised urchin biocontrol to be an effective management approach in controlling invasive macroalgae at reef-wide spatial scales and temporal scales of months to years.
Collapse
Affiliation(s)
- Brian J Neilson
- State of Hawai'i Division of Aquatic Resources, Honolulu, Hawai'i, United States of America
| | - Christopher B Wall
- Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, Kāne'ohe, Hawai'i, United States of America
| | - Frank T Mancini
- Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, Kāne'ohe, Hawai'i, United States of America
| | - Catherine A Gewecke
- State of Hawai'i Division of Aquatic Resources, Honolulu, Hawai'i, United States of America
| |
Collapse
|
6
|
Komura T, Ando H, Horikoshi K, Suzuki H, Isagi Y. DNA barcoding reveals seasonal shifts in diet and consumption of deep-sea fishes in wedge-tailed shearwaters. PLoS One 2018; 13:e0195385. [PMID: 29630670 PMCID: PMC5891018 DOI: 10.1371/journal.pone.0195385] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 03/21/2018] [Indexed: 12/20/2022] Open
Abstract
The foraging ecology of pelagic seabirds is difficult to characterize because of their large foraging areas. In the face of this difficulty, DNA metabarcoding may be a useful approach to analyze diet compositions and foraging behaviors. Using this approach, we investigated the diet composition and its seasonal variation of a common seabird species on the Ogasawara Islands, Japan: the wedge-tailed shearwater Ardenna pacifica. We collected fecal samples during the prebreeding (N = 73) and rearing (N = 96) periods. The diet composition of wedge-tailed shearwater was analyzed by Ion Torrent sequencing using two universal polymerase chain reaction primers for the 12S and 16S mitochondrial DNA regions that targeted vertebrates and mollusks, respectively. The results of a BLAST search of obtained sequences detected 31 and 1 vertebrate and mollusk taxa, respectively. The results of the diet composition analysis showed that wedge-tailed shearwaters frequently consumed deep-sea fishes throughout the sampling season, indicating the importance of these fishes as a stable food resource. However, there was a marked seasonal shift in diet, which may reflect seasonal changes in food resource availability and wedge-tailed shearwater foraging behavior. The collected data regarding the shearwater diet may be useful for in situ conservation efforts. Future research that combines DNA metabarcoding with other tools, such as data logging, may provide further insight into the foraging ecology of pelagic seabirds.
Collapse
Affiliation(s)
- Taketo Komura
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, Japan
| | - Haruko Ando
- Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, Onogawa, Tsukuba, Ibaraki, Japan
| | - Kazuo Horikoshi
- Institute of Boninology, Nishi-machi, Chichijima, Ogasawara, Tokyo, Japan
| | - Hajime Suzuki
- Institute of Boninology, Nishi-machi, Chichijima, Ogasawara, Tokyo, Japan
| | - Yuji Isagi
- Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, Japan
| |
Collapse
|
7
|
Caselle JE, Davis K, Marks LM. Marine management affects the invasion success of a non‐native species in a temperate reef system in California, USA. Ecol Lett 2017; 21:43-53. [DOI: 10.1111/ele.12869] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 06/19/2017] [Accepted: 09/20/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Jennifer E. Caselle
- Marine Science Institute University of California Santa Barbara Santa Barbara CA93106 USA
| | - Kathryn Davis
- Marine Science Institute University of California Santa Barbara Santa Barbara CA93106 USA
| | - Lindsay M. Marks
- Department of Ecology, Evolution and Marine Biology University of California Santa Barbara Santa Barbara CA93106 USA
| |
Collapse
|