The shark nursery of Bulls Bay, South Carolina, with a review of the shark nurseries of the southeastern coast of the United States

Castro, José Ignacio Fernández del

doi:10.1007/978-94-017-3450-9_4

Cited by 96 publications

(92 citation statements)

References 3 publications

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“…Despite the lack of mature shovelnose inside the FTB, adult elasmobranchs are known to use bays and estuaries seasonally for mating and pupping (Castro 1993;Simpfendorfer and Milward 1993;Pratt and Carrier 2001). Adult shovelnose have been found during the summer in bays and estuaries in California (Talent 1985) and Baja California (Salazar-Hermoso and Villavicencio-Garayzar 1999), but their presence in these areas was predominantly during summer.…”

Section: Feeding and Growthmentioning

confidence: 99%

Abundance, habitat use and movement patterns of the shovelnose guitarfish (Rhinobatos productus) in a restored southern California estuary

Farrugia

Espinoza

Lowe

2011

Mar. Freshwater Res.

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Abstract. Coastal elasmobranchs such as the shovelnose guitarfish (Rhinobatos productus) seasonally use bays and estuaries for mating, pupping and feeding. However, many human-populated coastal areas have been developed, making them unavailable to coastal fish populations. The Full Tidal Basin (FTB) of the Bolsa Chica Ecological Reserve, California, USA, was completed in 2006, with the aim to restore lost estuarine habitat in southern California. Monthly abundance surveys conducted inside the FTB between June 2008 and September 2009 showed that shovelnose guitarfish were present throughout the year. Over 96% of the individuals caught were juveniles and these were most abundant in waters between 208C and 248C. Concurrently, 23 shovelnose guitarfish were fitted with coded acoustic transmitters and continuously tracked within the FTB for 16 months. Telemetry data showed individuals remained inside the FTB for, on average, 73.9 days (range 15-172 days), and made few movements between the FTB and the ocean. Tagged individuals disproportionately used mud habitats and waters at temperatures of 228C, both of which are more common in the FTB than the neighbouring coastal ocean. The present study examined the structure and functionality of a restored estuary and suggests that the FTB is important habitat for a benthic predator, a promising result three years after restoration.

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Section: Feeding and Growthmentioning

confidence: 99%

Abundance, habitat use and movement patterns of the shovelnose guitarfish (Rhinobatos productus) in a restored southern California estuary

Farrugia

Espinoza

Lowe

2011

Mar. Freshwater Res.

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“…Temperature was the driving factor for the movement of Sandbar Sharks into nurseries in both Delaware (Merson and Pratt 2001) and Chesapeake bays (Grubbs et al 2007). Similarly, Castro (1993) and Ulrich et al (2007) documented the presence of sharks in South Carolina estuaries after water temperatures reached ∼19-20 • C. Increasing shark abundance at higher temperatures is also expected. In the coastal waters of Texas, Froeschke et al (2010) showed that shark catch rates increased as temperatures increased between 20 • C and 30 • C, a trend also seen in the present study.…”

Section: Discussionmentioning

confidence: 78%

“…Of particular importance in their role as EFH are nearshore estuarine and marine ecosystems (e.g., seagrass meadows, marshes, and mangroves) that serve as nursery habitats, providing a selective advantage for juveniles. For sharks, this may include increased prey abundance and decreased risk (Branstetter 1990;Castro 1993), both of which would have obvious benefits for survival and overall population growth.…”

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confidence: 99%

Abundance and Distribution of Sharks in Northeast Florida Waters and Identification of Potential Nursery Habitat

2013

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Sharks are considered top predators in many marine ecosystems and can play an important role in structuring community ecology. As a result, it is necessary to understand the factors that influence their abundance and distribution. This is particularly important as fishery managers develop management plans for sharks that identify areas that serve as essential fish habitat, especially nursery habitat. However, our understanding of shark habitat use in northeast Florida waters is limited. The goal of this study was to characterize the abundance and distribution of sharks in northeast Florida estuaries and to examine the effect of abiotic factors on shark habitat use. A bottom longline survey conducted from 2009 to 2011 indicated that 11 shark species use the estuarine waters of northeast Florida during the summer months. Atlantic Sharpnose Sharks Rhizoprionodon terraenovae, Blacktip Sharks Carcharhinus limbatus, and Bonnetheads Sphyrna tiburo were the most abundant species and made up 81.4% of the total catch. Site, month, and bottom water temperature were the most important factors determining the presence and abundance of sharks and suggest both regional and seasonal variations in the use of northeast Florida waters. Depth, salinity, and dissolved oxygen were also important factors. Our data show that these waters serve as a nursery for Atlantic Sharpnose and Blacktip Sharks, with young‐of‐the‐year and juveniles being present in the summer months. Limited tag–return data reveal that juvenile sharks remain in these waters throughout the summer and that some return in subsequent summers. This is the first study to characterize the abundance and distribution of sharks and identify potential nursery areas in northeast Florida estuaries.Received October 10, 2012; accepted March 7, 2013

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“…The total length (TL, in cm) and sex of each shark was recorded, together with the degree of maturity, based on the scale described by Castro (1993). Muscle tissue samples (0.5 g) were taken from the antero-dorsal portion of live sharks, preserved in the tissue preservative All protect tissue reagent (Qiagen) at a concentration of 100 mL per 10 mg of muscle, and stored in the laboratory at -50°C until analyzed.…”

Section: __________________mentioning

confidence: 99%

Oxidative stress and RNA DNA ratio following longline capture in the silky shark Carchahrinus falciformis (Muller and Henle, 1839)

Cruz‐Ramírez

Liñán‐Cabello

Tavares

et al. 2017

lajar

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ABSTRACT. This study used transcriptomics tracers and measurements of oxidative stress to examine the effect of capture by longline on the silky shark Carcharhinus falciformis. From February 2010 to May 2012, C. falciformis individuals captured in the eastern Pacific Ocean were initially examined for sex, degree of maturity, and morphometric data. Samples were then taken from muscle tissue to determine RNA, DNA, and protein concentrations as well as RNA/DNA and protein/DNA ratios. The levels of three oxidative stress indicators [superoxide dismutase (SOD), glutathione (GSH), and malondialdehyde (MDA)] were determined in muscle. The analysis of the 159 specimens (93 juveniles and 66 adults) showed low RNA/DNA ratios at the different stages of maturity. This basal level of transcriptomics capacity may have been caused by the physiological stress resulting from capture. In juveniles, the low RNA/DNA and protein/DNA ratios were associated with low levels of cellular damage related to oxidative stress, whereas in adults the level of cell damage due to oxidative stress was high, especially in older females. This pattern indicated decreased antioxidant response capacity with increasing age in elasmobranchs.

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The shark nursery of Bulls Bay, South Carolina, with a review of the shark nurseries of the southeastern coast of the United States

Cited by 96 publications

References 3 publications

Abundance, habitat use and movement patterns of the shovelnose guitarfish (Rhinobatos productus) in a restored southern California estuary

Abundance, habitat use and movement patterns of the shovelnose guitarfish (Rhinobatos productus) in a restored southern California estuary

Abundance and Distribution of Sharks in Northeast Florida Waters and Identification of Potential Nursery Habitat

Oxidative stress and RNA DNA ratio following longline capture in the silky shark Carchahrinus falciformis (Muller and Henle, 1839)

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