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article

Optimizing video sampling for juvenile fish surveys: Using deep learning and evaluation of assumptions to produce critical fisheries parameters

Marcus Sheaves, Michael Bradley, Cesar Herrera, Carlo Mattone, more

Fish and Fisheries > 21 > 6 > 1259 - 1276

The limitations imposed by traditional sampling methods have restricted the acquisition of data on key fisheries parameters. This is particularly the case for juveniles because most traditional gear explicitly avoids the capture of juveniles, and the juveniles of many species use habitats in which traditional gear is ineffective. The increasing availability and sophistication of Remote Underwater...

article

Simultaneous and sympatric occurrence of early juveniles of Acanthopagruslatus and A.schlegelii (Sparidae) in the estuary of northern Vietnam

Thanh Trung Tran, Hau Duc Tran, Izumi Kinoshita

Limnology > 2019 > 20 > 3 > 321-326

Acanthopagruslatus and A.schlegelii (Sparidae) are closely related species distributed in northern tropical to temperate coastal waters of eastern Asia. Early life histories of the two species were investigated by seine net sampling in the Tien Yen estuary, northern Vietnam, which is probably the southernmost co-occurrence locality for these species. In northern Vietnam, early juveniles of both the...

article

Interannual variation of the diet shifts and their effects on the fatness and growth of age‐0 Pacific bluefin tuna (Thunnus orientalis) off the southwestern Pacific coast of Japan

Yuko Hiraoka, Ko Fujioka, Hiromu Fukuda, Mikio Watai, more

Fisheries Oceanography > 28 > 4 > 419 - 433

We investigated the effect of feeding habits on the fatness (length–weight relationship (LW)) and otolith growth of age‐0 Pacific bluefin tuna (PBF) (fork length (FL) of 15.0–29.9 cm) collected off the southwestern Pacific coast of Japan from July to August during 2010–2015. The feeding rate on Clupeiformes (FRc) was substantially influenced by the path of the Kuroshio Current during early summer...

article

Size-effect, asymmetry, and small-scale spatial variation in otolith shape of juvenile sole in the Southern North Sea

Sophie Delerue-Ricard, Hanna Stynen, Léo Barbut, Fabien Morat, more

Hydrobiologia > 2019 > 845 > 1 > 95-108

While otolith shape analysis can provide a valuable tool for discriminating between fish populations, factors which may influence otolith shape, such as the effect of size, directional asymmetry in growth, and local environmental conditions, are often unknown. Here, we analyzed differences in otolith shape across three size classes of age-0 common sole Solea solea L. from nursery grounds off the Belgian...

article

Smooth hammerhead sharks (Sphyrna zygaena) observed off the Portuguese southern coast

Ana Couto, Nuno Queiroz, James T. Ketchum, Eduardo Sampaio, more

Environmental Biology of Fishes > 2018 > 101 > 8 > 1261-1268

Despite its worldwide distribution and vulnerable status, knowledge on the biology and ecology of the smooth hammerhead Sphyrna zygaena in the temperate NE Atlantic is very scarce. Here, we reveal intra-annual fluctuations in S. zygaena abundance in the Portuguese southwestern coast, using sightings data collected on board whale watching boats over five years (2010–14; excluding winter months). Moreover,...

article

Distribution of the early life stages of small yellow croaker in the Yangtze River estuary and adjacent waters

Nan Lin, Yuange Chen, Yan Jin, Xingwei Yuan, more

Fisheries Science > 2018 > 84 > 2 > 357-363

The horizontal distribution of the early life stages of small yellow croaker Larimichthys polyactis in the Yangtze River estuary and its adjacent area was investigated through six ichthyoplankton surveys conducted during the period of mid-April to mid-July 2015. A total of seven eggs and 2461 larvae and juveniles of small yellow croaker were collected. Abundance of the specimens was highest in mid-May...

article

The Mediterranean stony coral Cladocora caespitosa (Linnaeus, 1767) as habitat provider for molluscs: colony size effect

Valentina Pitacco, Fabio Crocetta, Martina Orlando-Bonaca, Borut Mavrič, more

Journal of Sea Research > 2017 > 129 > C > 1-11

The stony coral Cladocora caespitosa (Linnaeus, 1767) is an important Mediterranean habitat builder, whose survival is now being threatened by human activities and possibly natural events such as mass mortality and bleaching. We characterized the mollusc assemblage associated with colonies in the Gulf of Trieste (northern Adriatic Sea) and then tested whether the number of mollusc species increases...

article

Effects of nutrients and zooplankton on the phytoplankton community structure in Marudu Bay

Kar Soon Tan, Julian Ransangan

Estuarine, Coastal and Shelf Science > 2017 > 194 > C > 16-29

Current study was carried out to provide a better understanding on spatial and temporal variations in the phytoplankton community structure in Marudu Bay, an important nursery ground for fishery resources within the Tun Mustapha Marine Park and Coral Triangle Initiative, and their relationship with environmental variables. Samplings were conducted monthly from April 2014 to April 2015 in Marudu Bay,...

article

Impact of the great tsunami in 2011 on the quality of nursery grounds for juvenile Japanese flounder Paralichthys olivaceus in Sendai Bay, Japan

Yutaka Kurita, Shinji Uehara, Yuji Okazaki, Tomoko Sakami, more

Fisheries Oceanography > 26 > 2 > 165 - 180

The impact of the great tsunami, which was generated by the Great East Japan Earthquake on 11 March 2011, on the quality of a nursery ground for juvenile Japanese flounder Paralichthys olivaceus with a sandy bottom of <15 m in depth in Sendai Bay, Japan, was evaluated. Growth rates of juveniles, as an index of the quality of the nursery ground, were compared between before and after the tsunami...

article

Early epipelagic life-history characteristics of the North Pacific armorhead Pentaceros wheeleri

Chisato Murakami, Shiroh Yonezaki, Satoshi Suyama, Masayasu Nakagami, more

Fisheries Science > 2016 > 82 > 5 > 709-718

North Pacific armorhead Pentaceros wheeleri specimens collected through pelagic surveys in the North Pacific were analyzed to estimate the distribution, hatching season, growth, and the duration of the epipelagic life stage. Most pelagic specimens were collected in the central and eastern North Pacific (36–50°N, 178°E–137°W). This area was considered to be the nursery ground where larvae and juveniles...

article

Contrasts in the movements and habitat use of juvenile and adult white sharks (Carcharodon carcharias) at Guadalupe Island, Mexico

E. Mauricio Hoyos-Padilla, A. Peter Klimley, Felipe Galván-Magaña, Alex Antoniou

Animal Biotelemetry > 2016 > 4 > 1 > 1-14

Background Although the effort in the study of white sharks in Mexico is rapidly elucidating adult biology, almost nothing is known about the juveniles. Current understanding of this life history is based largely on the incidental take of juveniles in nursery grounds in the Pacific coast of Baja California and some individuals tagged in the USA that have migrated to Mexican waters. Also, it is not...

article

Effects of hydrographic conditions of ponds on juvenile fish assemblages in the Kakum mangrove system, Ghana

Evan S. Levy, Noble K. Asare, Kobina Yankson, Daniel A. Wubah

Regional Studies in Marine Science > 2015 > 2 > Complete > 19-27

The importance of mangrove ecosystems as nursery grounds for fishes is well established and documented. This paper reports on the possible role of hydrographic dynamics in the selection and utilization of tropical mangrove ponds as nursery habitats for juvenile fishes of ecological and commercial importance. The study was conducted in the Kakum River Estuary mangrove ecosystem near Elmina in the Central...

article

True Value of Estuarine and Coastal Nurseries for Fish: Incorporating Complexity and Dynamics

Marcus Sheaves, Ronald Baker, Ivan Nagelkerken, Rod M. Connolly

Estuaries and Coasts > 2015 > 38 > 2 > 401-414

Coastal ecosystems, such as estuaries, salt marshes, mangroves and seagrass meadows, comprise some of the world’s most productive and ecologically significant ecosystems. Currently, the predominant factor considered in valuing coastal wetlands as fish habitats is the contribution they make to offshore, adult fish stocks via ontogenetic migrations. However, the true value of coastal nurseries for fish...

article

Geographic variation in mangrove flooding and accessibility for fishes and nektonic crustaceans

Ronald Baker, Marcus Sheaves, Ross Johnston

Hydrobiologia > 2015 > 762 > 1 > 1-14

Intertidal habitats are only available to most nekton when inundated by tides. We assessed the variability of access to mangrove habitats for aquatic organisms over 3500 km of Australia’s east coast. After determining the elevation of the lower mangrove edge across 19 locations, we used 6 years of historic hourly tide gauge readings to estimate wetland edge flooding frequency, duration, and depth...

article

Role of mangroves as a nursery ground for juvenile reef fishes in the southern Egyptian Red Sea

Mohamed A. Abu El-Regal, Nesreen K. Ibrahim

The Egyptian Journal of Aquatic Research > 2014 > 40 > 1 > 71-78

This work aims to study the importance of mangrove area as nursery grounds for the juvenile of reef fishes in the Red Sea. Juvenile fishes were collected during three seasons in 2010 from three mangrove swamps by a beach seine net. The net was dragged on the bottom for 100m three times. A total of 269 juvenile fishes were collected, representing 21 species in 19 families. The most abundant species...

article

A quantitative estimate of the function of soft-bottom sheltered coastal areas as essential flatfish nursery habitat

E. Trimoreau, B. Archambault, A. Brind'Amour, M. Lepage, more

Estuarine, Coastal and Shelf Science > 2013 > 133 > Complete > 193-205

Essential fish habitat suitability (EFHS) models and geographic information system (GIS) were combined to describe nursery habitats for three flatfish species (Solea solea, Pleuronectes platessa, Dicologlossa cuneata) in the Bay of Biscay (Western Europe), using physical parameters known or suspected to influence juvenile flatfish spatial distribution and density (i.e. bathymetry, sediment, estuarine...

article

Food and feeding of Argentine hake (Merluccius hubbsi) larvae in the Patagonian nursery ground

B. Temperoni, M.D. Viñas

Fisheries Research > 2013 > 148 > Complete > 47-55

Feeding success during the early life stages of fish is one of the main factors that determines recruitment and stock fluctuations. In the Argentine Sea, the Patagonian stock of Merluccius hubbsi is the most important in biomass, spawning from December to April in the north Patagonian shelf region (43–45°30′). Since previous knowledge about larval feeding of the species in this region is fragmentary,...

article

Spatial analysis of the trophic interactions between two juvenile fish species and their preys along a coastal–estuarine gradient

Dorothée Kopp, Hervé Le Bris, Lucille Grimaud, Caroline Nérot, more

Journal of Sea Research > 2013 > 81 > Complete > 40-48

Coastal and estuarine systems provide nursery grounds for many marine fish species. Their productivity has been correlated with terrigeneous inputs entering the coastal–estuarine benthic food web, thereby favouring the establishment of fish juveniles. Studies in these ecosystems often describe the nursery as a single large habitat without verifying nor considering the presence of contiguous habitats...

article

Population ecology and habitat preferences of juvenile flounder Platichthys flesus (Actinopterygii: Pleuronectidae) in a temperate estuary

Allan T. Souza, Ester Dias, Ana Nogueira, Joana Campos, more

Journal of Sea Research > 2013 > 79 > Complete > 60-69

The European flounder Platichthys flesus is a widely distributed epibenthic species and an important component of demersal fish assemblages in the European Atlantic coastal waters. In Portuguese estuaries, this species reaches high densities, especially in Minho estuary (NW Iberian Peninsula, Europe), potentially playing an important role in the system's ecology. In this context, the population structure,...

article

Ontogenetic diet shift of age‐0 year Pacific bluefin tuna Thunnus orientalis

T. Shimose, H. Watanabe, T. Tanabe, T. Kubodera

Journal of Fish Biology > 82 > 1 > 263 - 276

Stomach contents of 437 age‐0 year Pacific bluefin tuna Thunnus orientalis (20·3–59·4 cm fork length, L_F) caught in the Tsushima Current and the Kuroshio regions around Japan were examined to investigate their ontogenetic diet shift. Prey compositions were diverse and different between regions. Although the seasonal growth patterns were different between regions, ontogenetic diet shifts shared a common...

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Optimizing video sampling for juvenile fish surveys: Using deep learning and evaluation of assumptions to produce critical fisheries parameters

Simultaneous and sympatric occurrence of early juveniles of Acanthopagruslatus and A.schlegelii (Sparidae) in the estuary of northern Vietnam

Interannual variation of the diet shifts and their effects on the fatness and growth of age‐0 Pacific bluefin tuna (Thunnus orientalis) off the southwestern Pacific coast of Japan

Size-effect, asymmetry, and small-scale spatial variation in otolith shape of juvenile sole in the Southern North Sea

Smooth hammerhead sharks (Sphyrna zygaena) observed off the Portuguese southern coast

Distribution of the early life stages of small yellow croaker in the Yangtze River estuary and adjacent waters

The Mediterranean stony coral Cladocora caespitosa (Linnaeus, 1767) as habitat provider for molluscs: colony size effect

Effects of nutrients and zooplankton on the phytoplankton community structure in Marudu Bay

Impact of the great tsunami in 2011 on the quality of nursery grounds for juvenile Japanese flounder Paralichthys olivaceus in Sendai Bay, Japan

Early epipelagic life-history characteristics of the North Pacific armorhead Pentaceros wheeleri

Contrasts in the movements and habitat use of juvenile and adult white sharks (Carcharodon carcharias) at Guadalupe Island, Mexico

Effects of hydrographic conditions of ponds on juvenile fish assemblages in the Kakum mangrove system, Ghana

True Value of Estuarine and Coastal Nurseries for Fish: Incorporating Complexity and Dynamics

Geographic variation in mangrove flooding and accessibility for fishes and nektonic crustaceans

Role of mangroves as a nursery ground for juvenile reef fishes in the southern Egyptian Red Sea

A quantitative estimate of the function of soft-bottom sheltered coastal areas as essential flatfish nursery habitat

Food and feeding of Argentine hake (Merluccius hubbsi) larvae in the Patagonian nursery ground

Spatial analysis of the trophic interactions between two juvenile fish species and their preys along a coastal–estuarine gradient

Population ecology and habitat preferences of juvenile flounder Platichthys flesus (Actinopterygii: Pleuronectidae) in a temperate estuary

Ontogenetic diet shift of age‐0 year Pacific bluefin tuna Thunnus orientalis

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