Deep-Sea Fish Fauna on the Seamounts of Southern Japan with Taxonomic Notes on the Observed Species

Several volcanic islands and submarine volcanoes exist in the sea connecting the Izu-Bonin Islands with the Mariana Islands, with trenches and islands formed by the submergence of the Pacific Plate under the Philippine Sea Plate. Although designated as a Marine Protected Area (MPA) in December 2020, the seamounts’ biodiversity has not been sufficiently researched. Therefore, direct observations and specimen sampling were conducted on four seamounts in this area using a remotely operated vehicle (ROV), autonomous underwater vehicle (AUV), and baited cameras (BCs). The ROV survey was conducted for 2–4 days on each seamount and divided into shallow and deep areas. During the expedition, 20 orders and 51 families of 81 deep-sea fish species were observed, including several potentially undescribed species, new genus or species records from Japanese waters, new depth records, new ecological information, and several rare fishes. The fish fauna and biodiversity abundance clearly differed among the seamounts; the seamount with a hydrothermal vent had the lowest diversity among the four seamounts. In shallow water, 23, 7, and 12 species were recorded only by ROV, AUV, and BC, respectively, indicating that combining these methods is beneficial for understanding the fish fauna of seamounts.

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Preliminary observations on abundance and distribution of fish fauna in a canyon of the Bay of Biscay (ICES Division 8c)

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315420001265 ◽

2021 ◽

pp. 1-10

Author(s):

G. Diez ◽

L. Arregi ◽

M. Basterretxea ◽

E. Cuende ◽

I. Oyarzabal

Keyword(s):

Deep Sea ◽

Basque Country ◽

Fish Fauna ◽

Fishing Effort ◽

Fishing Gear ◽

Clear Trend ◽

Depth Ranges ◽

Abundance And Distribution ◽

Sea Fish ◽

Distribution Of Fish

Abstract The changes in abundance and biodiversity of deep-sea fish fauna are described based on an annual deep-water longline survey with data collected during the period 2015–2019 in the Basque Country continental Slope (ICES Division 8c). The sampling scheme included hauls in four 400 m strata, from 650–2250 m deep. The DST sensors installed in the main line have allowed us to set an accurate soak time for each haul, and they were used to calculate fishing effort and CPUE by haul. The catchability of the fishing gear indicated that 15% of the total hooks deployed in the five-year period were able to fish, and that the bottom longline was very effective in fishing a wide number of different species in all depth ranges. The fishing gear caught 14 different species of sharks (13 deepwater and one pelagic), two chimaeras and nine teleosts. The abundance and biomass registered on the hooks attached to the bottom were between three and four times higher than in the floating sections, and the highest CPUE and biomass were recorded between 1051–1450 m, from 2015 to 2017, and in the 1451–1850 m strata, but they do not show any clear trend throughout the five years of the series.

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The deep sea teleost fish fauna of the Brazilian North Coast

Neotropical Ichthyology ◽

10.1590/1982-0224-2020-0030 ◽

2020 ◽

Vol 18 (3) ◽

Author(s):

Alex Garcia Cavalleiro de Macedo Klautau ◽

Israel Hidenburgo Aniceto Cintra ◽

Matheus Marcos Rotundo ◽

Alfredo Carvalho-Filho ◽

Rodrigo Antunes Caires ◽

...

Keyword(s):

Deep Sea ◽

Fish Fauna ◽

North Coast ◽

Brazilian Coast ◽

Northern Coast ◽

Commercial Fish ◽

The North ◽

Species Lists ◽

Sea Fish ◽

Photographic Records

Abstract Data on the deep sea fishes found off the northern Brazilian coast are restricted to the results of the surveys of the RV Oregon, a research vessel of the North American National Marine Fisheries Service, and the REVIZEE Program. The REVIZEE Score-Norte Program focused on commercial fish species and natural resources with potential for exploitation on the continental shelf and slope off the northern coast of Brazil. In this sense, the REVIZEE Score-Norte Program generated little information on species of no commercial value, did not catalog its inventory in zoological collections, and did not publish species lists. Given this considerable knowledge gap on the deep-sea fish found off the North coast of Brazil, we compiled all the available data on the deep-sea fish of this region and also retrieved photographic records from the REVIZEE Score-Norte Program, including the PRODEMERSAL and PROTUNA projects. Considering the published records, specimens deposited in zoological collections, and the interpretation of photographic records, we compiled a list of 63 species of deep-sea fish from the North coast of Brazil. An additional 30 species were found in the published records from the PRODEMERSAL and PROTUNA, but were considered to be doubtful or pending confirmation.

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Comparing Deep-Sea Fish Fauna between Coral and Non-Coral “Megahabitats” in the Santa Maria di Leuca Cold-Water Coral Province (Mediterranean Sea)

PLoS ONE ◽

10.1371/journal.pone.0044509 ◽

2012 ◽

Vol 7 (9) ◽

pp. e44509 ◽

Cited By ~ 48

Author(s):

Gianfranco D'Onghia ◽

Porzia Maiorano ◽

Roberto Carlucci ◽

Francesca Capezzuto ◽

Angela Carluccio ◽

...

Keyword(s):

Mediterranean Sea ◽

Deep Sea ◽

Cold Water ◽

Fish Fauna ◽

Santa Maria ◽

Sea Fish ◽

Water Coral

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Underwater robots: a review of technologies and applications

Industrial Robot the international journal of robotics research and application ◽

10.1108/ir-01-2015-0010 ◽

2015 ◽

Vol 42 (3) ◽

pp. 186-191 ◽

Cited By ~ 38

Author(s):

Robert Bogue

Keyword(s):

Deep Sea ◽

Oil And Gas ◽

Autonomous Underwater Vehicle ◽

Underwater Robot ◽

Remotely Operated Vehicle ◽

Underwater Robots ◽

Content Type ◽

Offshore Oil And Gas ◽

Offshore Oil ◽

Oil And Gas Sector

Purpose This paper aims to provide details of underwater robot technology and its applications. Design/methodology/approach Following an introduction, this article first discusses remotely operated vehicle (ROV) technology and applications and then considers their use in the emerging field of deep-sea mining. It then discusses autonomous underwater vehicle (AUV) technology and its applications, including sub-sea gliders. Finally, brief concluding comments are drawn. Findings ROVs were first developed in the 1950s for military applications. They are now widely used by the offshore oil and gas sector and other industries and are being developed for deep-sea mining. AUV technology has progressed rapidly in recent years and AUVs, including sub-sea gliders, are now emerging from their original role in oceanographic research and finding growing uses in the defence and offshore energy sectors. Originality/value This provides a detailed insight into underwater robot technologies, products and applications.

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The Deep-sea Fish Fauna of the Northern Gulf of Mexico

Journal of Northwest Atlantic Fishery Science ◽

10.2960/j.v31.a2 ◽

2003 ◽

Vol 31 ◽

pp. 19-33 ◽

Cited By ~ 31

Author(s):

S M Powell ◽

R L Haedrich ◽

J D McEachran

Keyword(s):

Gulf Of Mexico ◽

Deep Sea ◽

Fish Fauna ◽

Northern Gulf Of Mexico ◽

Sea Fish

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Deep-sea fish assemblages (300-2100 m) in the eastern Pacific off northern Mexico

Marine Ecology Progress Series ◽

10.3354/meps12502 ◽

2018 ◽

Vol 592 ◽

pp. 225-242 ◽

Cited By ~ 5

Author(s):

E Cruz-Acevedo ◽

N Tolimieri ◽

H Aguirre-Villaseñor

Keyword(s):

Deep Sea ◽

Fish Assemblages ◽

Eastern Pacific ◽

Northern Mexico ◽

Sea Fish

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Contributions to Management Strategies in the NE Atlantic Regarding the Life History and Population Structure of a Key Deep-Sea Fish (Mora moro)

Biology ◽

10.3390/biology10060522 ◽

2021 ◽

Vol 10 (6) ◽

pp. 522

Author(s):

Régis Santos ◽

Wendell Medeiros-Leal ◽

Osman Crespo ◽

Ana Novoa-Pabon ◽

Mário Pinho

Keyword(s):

Population Structure ◽

Life History ◽

Deep Sea ◽

Management Strategies ◽

Size Composition ◽

Large Size ◽

The Common ◽

Fishing Impacts ◽

Sea Fish

With the commercial fishery expansion to deeper waters, some vulnerable deep-sea species have been increasingly captured. To reduce the fishing impacts on these species, exploitation and management must be based on detailed and precise information about their biology. The common mora Mora moro has become the main deep-sea species caught by longliners in the Northeast Atlantic at depths between 600 and 1200 m. In the Azores, landings have more than doubled from the early 2000s to recent years. Despite its growing importance, its life history and population structure are poorly understood, and the current stock status has not been assessed. To better determine its distribution, biology, and long-term changes in abundance and size composition, this study analyzed a fishery-dependent and survey time series from the Azores. M. moro was found on mud and rock bottoms at depths below 300 m. A larger–deeper trend was observed, and females were larger and more abundant than males. The reproductive season took place from August to February. Abundance indices and mean sizes in the catch were marked by changes in fishing fleet operational behavior. M. moro is considered vulnerable to overfishing because it exhibits a long life span, a large size, slow growth, and a low natural mortality.

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Development of an Easy-to-Operate Underwater Raman System for Deep-Sea Cold Seep and Hydrothermal Vent In Situ Detection

Sensors ◽

10.3390/s21155090 ◽

2021 ◽

Vol 21 (15) ◽

pp. 5090

Author(s):

Qingsheng Liu ◽

Jinjia Guo ◽

Wangquan Ye ◽

Kai Cheng ◽

Fujun Qi ◽

...

Keyword(s):

Deep Sea ◽

Hydrothermal Vent ◽

Methane Hydrate ◽

Sulfur Cycle ◽

Cold Seep ◽

Remotely Operated Vehicle ◽

Bacterial Mats ◽

Optical Module ◽

In Situ Detection

As a powerful in situ detection technique, Raman spectroscopy is becoming a popular underwater investigation method, especially in deep-sea research. In this paper, an easy-to-operate underwater Raman system with a compact design and competitive sensitivity is introduced. All the components, including the optical module and the electronic module, were packaged in an L362 × Φ172 mm titanium capsule with a weight of 20 kg in the air (about 12 kg in water). By optimising the laser coupling mode and focusing lens parameters, a competitive sensitivity was achieved with the detection limit of SO42− being 0.7 mmol/L. The first sea trial was carried out with the aid of a 3000 m grade remotely operated vehicle (ROV) “FCV3000” in October 2018. Over 20,000 spectra were captured from the targets interested, including methane hydrate, clamshell in the area of cold seep, and bacterial mats around a hydrothermal vent, with a maximum depth of 1038 m. A Raman peak at 2592 cm−1 was found in the methane hydrate spectra, which revealed the presence of hydrogen sulfide in the seeping gas. In addition, we also found sulfur in the bacterial mats, confirming the involvement of micro-organisms in the sulfur cycle in the hydrothermal field. It is expected that the system can be developed as a universal deep-sea survey and detection equipment in the near future.

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