Academic literature on the topic 'Carcharhinus brevipinna'
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Journal articles on the topic "Carcharhinus brevipinna"
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Schwartz, Frank J. "Jumping and Spinning by Carcharhinid Sharks: Another View." Journal of North Carolina Academy of Science 129, no. 3 (September 1, 2013): 107–10. http://dx.doi.org/10.7572/2167-5880-129.3.107.
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Abstract Carcharhinus brevipinna (spinner) and Carcharhinus limbatus (blacktip) sharks make spectacular jumps and spinning leaps out of the water. Some believe these are: jumping responses to rid sharksuckers (Echeneis naucrates) that attach to their bodies, chaffing, shuttling, or heat hunter- cool rest behaviors. Examination of North Carolina shark data suggests that C. brevipinna and C. limbatus in temperate waters of North Carolina sense changes in abrupt ocean water temperatures. Echeneis naucrates is just along for the ride. Why after fourty-six years of longlining only one Echeneis naucrates occurred on C. brevipinna while many occurred on C. limbatus is unknown. Perhaps something in the skin texture, not shape, of C. brevipinna deters Echeneis from attaching.
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Fahmi and Kurnaen Sumadhiharga. "SIZE, SEX AND LENGTH AT MATURITY OF FOUR COMMON SHARKS CAUGHT FROM WESTERN INDONESIA." Marine Research in Indonesia 32, no. 1 (May 11, 2007): 7–19. http://dx.doi.org/10.14203/mri.v32i1.427.
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A study on four common shark species in Indonesia, the spinner shark Carcharhinus brevipinna (Muller and Henle, 1839), silky shark Carcharhinus falciformis (Bibron, 1839), spot-tail shark Carcharhinus sorrah (Valenciennes, 1839) and scalloped hammerhead Sphyrna lewini (Griffith and Smith, 1834) was conducted at several shark landing sites in western Indonesia from March 2002 to December 2004. Data were collected from the surveyed areas including the length of frequency, sex composition and length at maturity. In general, they were caught at size smaller than their maturity size. The proportion of immature C. brevipinna, C. falciformis, C. sorrah and S. lewini to their total number recorded at the surveyed area during the study were about 87%, 50%, 80% and 65%, respectively. According to the length at maturity, females generally attained their maturity in larger size than males. Some factors contributing the catches in immature size and conservation status of those four species were also discussed.
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Russo, F., and A. De Maddalena. "On the presence of the spinner shark Carcharhinus brevipinna (Müller & Henle, 1839) (Chondrichthyes: Carcharhinidae) in Maldivian waters." Marine Biological Journal 6, no. 4 (November 30, 2021): 87–91. http://dx.doi.org/10.21072/mbj.2021.06.4.07.
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We present the first confirmed report on the presence of spinner shark, Carcharhinus brevipinna, in Maldivian waters. The species was observed in front of Kooddoo’s harbour, in Villingili pass, Northern Huvadhoo Atoll, Southern Maldives in March 2020.
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Alfitri, Misla, Asadatun Abdullah, and Roni Nugraha. "Identifikasi Spesies Ikan Hiu dan Pari pada Produk Olahan Ikan Asap dengan Metode DNA Barcoding." Jurnal Pengolahan Hasil Perikanan Indonesia 25, no. 1 (April 29, 2022): 163–71. http://dx.doi.org/10.17844/jphpi.v25i1.38518.
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Ikan hiu dan pari adalah kelompok ikan yang diatur perdagangannya di tingkat lokal dan internasional. Tingginya permintaan produk hiu di pasaran dapat berakibat pada kelangkaan spesies-spesies hiu tertentu di alam. Autentikasi pada produk-produk olahan hiu diperlukan untuk mendeteksi jenis spesies hiu yang digunakan pada suatu produk. Tujuan dari penelitian ini yaitu mengidentifikasi spesies ikan hiu dan pari asap yang berasal dari Perairan Utara Pulau Jawa, Tegal, Jawa Tengah dengan metode DNA barcoding. Metode penelitian terdiri dari pengumpulan sampel, isolasi DNA, Ekstraksi DNA, Konsentrasi dan Kemurnian DNA, amplifikasi dan pengurutan PCR, Elektroforesis, Sanger Sequencing, Pengujian PCR dengan marka molekuler COI, dan analisis data bioinformatika. Hasil identifikasi spesies dari produk olahan ikan pari dan hiu asap adalah terdeteksi menggunakan hiu di antaranya spesies Carcharhinus brevipinna, Telatrygon zugei, Rhizoprionodon oligolinx, Himantura uarnacoides, Maculabatis macrura, Hydrolagus novaezealandiae, dan Rhynchobatus australiae. Rhynchobatus australiae dan Carcharhinus brevipinna adalah spesies yang terdaftar sebagai hiu dilindungi dalam CITES II. Sekuen yang didapatkan memiliki persentase kemiripan antara 99,84-100% dengan sekuen yang terdapat pada GenBank.
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Tatanagara, Muhammad Ilham, Bintal Amin, and Joko Samiaji. "Morphology, Morphometrics, and Shark Conservation Status at TPI Sibolga City, North Sumatra Province." Journal of Coastal and Ocean Sciences 3, no. 3 (September 8, 2022): 192–200. http://dx.doi.org/10.31258/jocos.3.3.192-200.
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Sharks are predatory animals that dwell near coral reefs and swim at the ocean's bottom. Since the inclusion of many shark species in CITES Appendix II status in 2013, shark groups have become a global issue. This is owing to shark fishing's high exploitation, both as a target capture and as bycatch. It is divided into eleven fisheries management areas, one of which is WPPNRI 572, according to the Regulation of the Minister of Maritime Affairs and Fisheries of the Republic of Indonesia Number 18/PERMEN-KP/2014 concerning the State Fisheries Management Area of the Republic of Indonesia, hereinafter abbreviated as WPPNRI. The Indian Ocean waters west of Sumatra, as well as the Sunda Strait, are included in this area. Because it faces the high seas, notably the Indian Ocean, Sumatra's west coast is a key area of the Indonesian sea. The city of Sibolga is strategically important as one of the key entry points for utilizing the potential of western Sumatra's waters. This study was place during August and September of 2021. The goal of this study was to identify sharks landed through TPI Sibolga City in North Sumatra Province, describe their morphology and morphometrics, and describe their conservation status using IUCN and CITES criteria. Squalus chloroculus, Nebrius ferrugineus, Carcharhinus brevipinna, Carcharhinus falciformis, Carcharhinus melanopterus, Carcharhinus sorrah, Rhizoprionodon acutus, Rhizoprionodon oligolinx, and Sphyrna lewini were among the 310 sharks successfully landed in the TPI, according to the study's findings. The overall length variable has the strongest tendency, according to the results of the Principal Component Analysis Scree Plot. C. brevipinna, C. falciformis, C. melanopterus, C. sorrah, and T. obesus are shark species with comparable morphometric features. According to the IUCN, the conservation status of S. lewini is Critical or Threatened (EN). The status of N. ferrugineus is Very Vulnerable (VU). Near Threatened (NT) status for S. chloroculus, C. brevipinna, C. falciformis, C. melanopterus, C. sorrah, and T. obesus. Less Worrying Status was assigned to R. acutus and R. oligolinx (LC). While the trading status of sharks based on CITES, particularly C. falciformis, C. melanopterus, and S. lewini, are included in the Appendix II list, which denotes species that are not threatened with extinction but could be affected if trade continues without regulation
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Rahayu, Slamet Mardiyanto. "IDENTIFIKASI IKAN DI PELABUHAN PERIKANAN TANJUNG LUAR, PULAU LOMBOK, PROVINSI NUSA TENGGARA BARAT." Jurnal Harpodon Borneo 13, no. 1 (November 25, 2020): 30–38. http://dx.doi.org/10.35334/harpodon.v13i1.1405.
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Sumberdaya ikan adalah jenis ikan termasuk biota perairan laut lainnya yang merupakan sumber kekayaan alam yang memiliki daya pulih kembali secara alami, sehingga pemanfaatannya dapat dilakukan secara berkelanjutan. Pelabuhan perikanan merupakan tempat pendaratan hasil tangkapan dan awal pemasarannya. jenis ikan hasil tangkapan nelayan yang didaratkan di Pelabuhan Perikanan Pantai Tanjung Luar, Kabupaten Lombok Timur. Penelitian dilakukan dengan metode survey dan identifikasi. Berdasarkan penelitian diperoleh sebanyak 34 jenis ikan hasil tangkapan nelayan di Pelabuhan Perikanan Tanjung Luar, Pulau Lombok, yaitu: Naso brevisrostris, Chanos chanos, Parastromateus niger, Thallasoma purpureum, Siganus canaliculatus, Plectorhinchus polytaenia, Diodon holocanthus, Upeneus vittatus, Caesio cuning, Dermogenys sp, Epinephelus areolatus, Rastrelliger sp, Pomadasys argenteus, Lepturacanthus savala, Decapterus macrosoma, Sillago sihama, Eusphyra blochii, Carcharhinus brevipinna, Carcharhinus albimarginatus, Carcharhinus limbatus, Carcharhinus obscurus, Galeocerdo cuvier, Prionace glauca, Taeniura lymma, Priancanthus hamrur, Scolopsis sp, Scombermorus guttatus, Euthynnus affinis, Nemipterus japonicas, Sardinella sp, Lutjanus bitaeniatus, Secutor interruptus, Sphyraena jello, dan Caranx ignobilis
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Lyle, JM. "Mercury and selenium concentrations in sharks from northern Australian waters." Marine and Freshwater Research 37, no. 3 (1986): 309. http://dx.doi.org/10.1071/mf9860309.
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Total mercury, alkyl mercury and selenium concentrations in the muscle tissue of 15 carcharhinid (Carcharhinus sp., C. limbatus, C. sorrah, C. fitzroyensis, C. amblyrhynchoides, C. melanopterus, C. cautus, C. amboinensis, C. macloti, C. dussumieri, C. brevipinna, Rhizoprionodon acutus, R. taylori, Galeocerdo cuvieri, Negaprion acutidens) and three hammerhead (Sphyrna lewini, S. mokarran and S. blochii) sharks from northern Australian waters are reported. Total mercury concentrations ranged widely with maximum individual concentrations exceeding 1.5 mg kg-1 wet weight in 11 species and values of over 3.0 mg kg-1 in Carcharhinus sp., C. amblyrhynchoides, C. melanopterus, C. amboinensis and S. mokarran. Much of the variability in total mercury concentration was attributable to differences in length. Total mercury was adequately correlated with fork length by the power function relationship. There were signficiant differences in these relationships for males and females of six species: males had higher concentrations of mercury than females of the same size. Weighted mean mercury concentrations were calculated using species and size composition data from commercial feasibility fishing trials. Weighted means for species other than C. sorrah, C. macloti, C. brevipinna and C. dussumieri were greater than 0.5 mg kg-1 and the value for the combined catch of all species was 1.22 mg kg-1. Alkyl mercury comprised over 80% of the total mercury content in the muscle tissue. Maximum individual selenium concentrations were greater than 1.0 mg kg-1 in nine species and the maximum concentration recorded was 3.4 mg kg-1 for C. dussumieri. There were no obvious or consistent relationships between selenium concentration and fork length or between selenium and mercury concentrations.
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Sentosa, Agus Arifin, Fahmi Fahmi, and Umi Chodrijah. "Pola Pertumbuhan dan Faktor Kondisi Hiu Merak Bulu Carcharhinus brevipinna di Perairan Selatan Nusa Tenggara." Oseanologi dan Limnologi di Indonesia 3, no. 3 (December 29, 2018): 209. http://dx.doi.org/10.14203/oldi.2018.v3i3.221.
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<strong>Growth Pattern and Condition Factor of Spinner Shark Carcharhinus brevipinna in Southern Nusa Tenggara Waters.</strong> The spinner sharks are one of shark commodities that are utilized optimally from the southern of Nusa Tenggara waters, however, the scientific information is still limited. This study aimed to assess the growth pattern and condition factors of the spinner shark, <em>Carcharhinus brevipinna</em> in southern Nusa Tenggara waters. The research was conducted from January to December 2016 using direct recording of the catch data. Information on length, weight and sex determinations were collected by the enumerator. The data was analysed descriptively with the shark condition was determined based on the relative condition factor obtaining from the length-weight relationship. The results showed that growth patterns of the spinner shark, both males and females, were allometrically negative. The relative condition factors of the catch of male sharks were ranged from 0.206 – 2.225 and females from 0.237 – 3.361. The condition factors of spinner sharks were not different between sexes and time of fishing, but they were different in length classes.
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Dos Santos, Paulo Roberto Santos, Prianka Santoro, and Luiza De David Chelotti. "LENGTH-WEIGHT RELATIONSHIP OF THE SPINNER SHARK (Carcharhinus brevipinna) ON THE CONTINENTAL SHELF OF SOUTHERN BRAZIL." Arquivos de Ciências do Mar 50, no. 2 (August 20, 2018): 133. http://dx.doi.org/10.32360/acmar.v50i2.31153.
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Aqui apresentamos, a relação peso-comprimento do tubarão-rotador (Carcharhinus brevipinna) na plataforma continental do sul do Brasil, estimada a partir de análise de 125 exemplares. Não houve diferenças significativas entre machos e fêmeas, portanto os dados foram agrupados na equação W = 0,003L3.1534. Os resultados aqui apresentados são os primeiros a abordarem tubarões acima de 75 cm e confirmam o crescimento alométrico positivo da espécie.
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Geraghty, Pascal T., William G. Macbeth, and Jane E. Williamson. "Aspects of the reproductive biology of dusky, spinner and sandbar sharks (Family Carcharhinidae) from the Tasman Sea." Marine and Freshwater Research 67, no. 4 (2016): 513. http://dx.doi.org/10.1071/mf14228.
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Increased harvest pressure exerted on sharks worldwide has created a necessity for more information concerning the basic biology of targeted species. This study marks the first dedicated assessment of the reproductive biology of Carcharhinus obscurus, C. brevipinna and C. plumbeus in eastern Australian waters, where these species support a demersal longline fishery. We found all three to be late maturing species of low reproductive output, suggestive of an overarching susceptibility to stock depletion in the region. Length- (L50, cm LT) and age-at-maturity (A50, years), for females and males were respectively 281.1 and 15.5, and 271.9 and 14.6 for C. obscurus; 224.9 and 10.1, and 208.9 and 8.5 for C. brevipinna; and, 174.8 and 9.5, and 164.5 and 7.0 for C. plumbeus. Uterine fecundity (i.e. litter size) was observed at 5–12 (=9.6), 5–14 (=10.6) and 3–12 (=7.8) for the same three species respectively, and increased significantly with maternal length in C. brevipinna. Length-at-birth (L0, cm LT) ranged from 92 to 96 for C. obscurus, 79–82 for C. brevipinna and 66–76 for C. plumbeus, and all three species exhibited lengthy gestation periods, overall embryonic sex ratios of 1:1 and synchronous parturition in autumn. However, given limitations with respect to sample size and temporal distribution inherent in this study, the reproductive parameters defined herein are necessarily preliminary. Nevertheless, this research challenges a range of findings emanating from other parts of the world and, in doing so, raises pertinent questions relating to the resilience to targeted fishing activities of these species in New South Wales waters compared to other oceanic regions. Moreover, it reinforces the importance of locally derived demographic parameters for population modelling and stock assessment.
Dissertations / Theses on the topic "Carcharhinus brevipinna"
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Bethea, Dana M. "Foraging ecology of the early life stages of four shark species (Rhizoprionodon terraenovae, Carcharhinus limbatus, Carcharhinus isodon, and Carcharhinus brevipinna) in Apalachicola Bay, Florida." Connect to this title online, 2003. http://www.lib.ncsu.edu/theses/available/etd-04252003-160742/unrestricted/etd.pdf.
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Bethea, Dana Michelle. "Foraging ecology of the early life stages of four shark species (Rhizoprionodon terraenovae, Carcharhinus limbatus, Carcharhinus isodon, and Carcharhinus brevipinna) in Apalachicola Bay, Florida." NCSU, 2003. http://www.lib.ncsu.edu/theses/available/etd-04252003-160742/.
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As top predators, sharks have an important role in marine ecosystems in relation to populations of fish and invertebrates at lower trophic levels. Fishery management plans stress the need for an ecosystem approach, but few quantitative data on the foraging ecology of sharks have been published. Results from a literature review found that shark species close in taxonomic relation have high diet overlap. Stomach contents and catch data of early life stages of Atlantic sharpnose (Rhizoprionodon terraenovae), blacktip (Carcharhinus limbatus), finetooth (Carcharhinus isodon), and spinner sharks (Carcharhinus brevipinna) taken from fishery independent surveys in Apalachicola Bay, Florida, April-October 1999-2002 were examined to test for resource competition. All species are capable of taking teleost prey from birth, though Atlantic sharpnose and blacktip sharks show an ontogenetic shift in diet. Young-of-the-year Atlantic Sharpnose sharks feed mainly on shrimp, juveniles on sciaenids, and adults on clupeids. Young-of-the-year blacktip sharks feed mainly on sciaenids, whereas juveniles feed on clupeids. The primary prey of young-of-the-year and juvenile finetooth and spinner sharks is menhaden. Seven of ten size-selectivity tests showed neutral selection. Atlantic sharpnose and finetooth sharks consume relatively small-sized prey (over 60% <20% of their length) compared to teleost piscivores while blacktip sharks consume relatively larger prey (58% >20% of their length). Regardless of maturity state and species, diet overlap is high for species-life stage combinations that are similar in size; however, species-life stages did not show significant overlap in habitat use. One possible interpretation is that prey categories shared by similar-sized species are not limiting, but competition may exist for available habitat resources. More intensive monitoring is needed to fully understand temporal and spatial habitat use patterns among these early life stages. Quantifying the links among these sharks and the links between these sharks and resource species are critical for ecosystem modeling and a key step to a broader approach in fisheries management.
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呂連棋. "Some Aspects on Fishery Biology of the Spinner Shark, Carcharhinus brevipinna, in the Northeastern Waters of Taiwan." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/13320256782843908474.
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碩士國立海洋大學
漁業科學學系
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Specimens of spinner shark were obtained from Nan Fan Ao fish market from October 1995 to September 1996. Specimens used for analyses of reproduction, age and growth, and food habits were 376, 206, and 79, respectively. Measurements of body weight and length were carried out in fish market, reproductive organs and food items were observed in fresh condition. Vertebrae under caudal peduncle were sampled and used for age and growth analysis. Size at maturity were estimated to be 220 cm TL to 230 cm TL for both sexes, pupping season was between September and October since near full-term embryos appear during that period per litter. Sex ratio of embryos is estimated to be 1:1. Both translucent and opaque zones on vertebral center were formed one time per year, during Nov. and Jan. A significant curvilinear relationship was found between TL and the centrum radius. The results were: for female: TL=33.78R0.788U; and for male: TL=30.09R0.385. The von Bertalanffy growth curves parameters obtained using a nonlinear regression based on age and each total length were as follows: asymptotic length (L∞)=292.36 cm, growth coefficient(k)=0.137, age at zero length (to)=-2.306yr for female; length (L∞)=259.52 cm, growth coefficient(k)=0.206, age at zero length(to)=-1.411 yr for male. General weight-length relationships were W=3X10-6TL3.144 and W=8X10-6TL2.943 for both female and male, respectively. The age at sexual maturity is 8 yrs. Stomach content is comparatively low in this species. In summary, this species possess yolk-sac placenta, its relative large and more embryos being puppet once by two years; young growing faster when approaching to maturity; major preys are abundant pelagic teleosts. All these factors guarantee this stock to maintain their population survive in northeastern Taiwan waters. However, this should be coped with appropriate fishery management to prevent it from the human exhaustive exploitation.
Book chapters on the topic "Carcharhinus brevipinna"
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"Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States." In Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States, edited by CRAIG W. AUBREY and FRANKLIN F. SNELSON. American Fisheries Society, 2007. http://dx.doi.org/10.47886/9781888569810.ch12.
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<em>Abstract.</em>—A hook-and-line survey designed to sample young spinner sharks <em>Carcharhinus brevipinna </em>in the shallow inshore waters of Cape Canaveral and Cocoa Beach on the east coast of Florida shows that the area served as a nursery for the species in 1997 and 1998. Neonates, born offshore in deeper water in May and June, moved into the study area shortly afterward and stayed throughout the warm summer months, departing in September or October. During this time, they grew from 57.5 to 67.5 cm in fork length (FL) and from 1.2 to 2.6 kg in weight. Young of the year were consistently larger in 1997 than in 1998. The sexes were recruited in equal numbers. Tag return data show that young of the year moved little during their first summer. Juveniles present in the study area for a limited period during the summer averaged 82 cm FL, and most were 1 year old. Their estimated growth was 23–24 cm FL in the first year.
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"Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States." In Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States, edited by JOHN K. CARLSON. American Fisheries Society, 2007. http://dx.doi.org/10.47886/9781888569810.ch18.
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<em>Abstract.</em>—A dynamic mass-balance ecosystem model (Ecopath with Ecosim) was used to investigate how relative changes in fishing mortality on sharks can affect the structure and function of Apalachicola Bay, Florida, a coastal marine ecosystem. Simulations were run for 25 years, wherein fishing mortality rates from recreational and trawl fisheries were doubled for 10 years and then decreased to initial levels. Effect of time/area closures on ecosystem components were also tested by eliminating recreational fishing mortality on juvenile blacktip sharks <em>Carcharhinus limbatus</em>. Simulations were run assuming mixed control and top-down control. In the mixed control, biomass of juvenile coastal sharks (finetooth shark <em>C. isodon</em>, spinner shark <em>C. brevipinna</em>, sandbar shark <em>C. plumbeus</em>), juvenile blacktip sharks, and bull sharks <em>C. leucas </em>declined up to 57% when recreational fishing mortality was doubled. Increases in biomass were also observed for the Atlantic sharpnose shark <em>Rhizoprionodon terraenovae </em>and, to a lesser extent, skates and rays. Increasing the fishing mortality imposed by trawl fisheries affected only a few elasmobranch groups, primarily skates and rays. Increases and decreases in biomass lasted only as long as fishing mortality was elevated, although a lag time was observed for some groups to recover to initial biomass. Simulating a time/ area closure for juvenile blacktip sharks caused increases in their biomass but decreases in juvenile coastal shark biomass, a competing multispecies assemblage that is the apparent competitor. Topdown control scenarios resulted in greater variation and magnitude of response than those elicited under mixed control, although the direction of the response was similar. In general, reduction of targeted sharks did not cause strong top-down cascades.
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"Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States." In Shark Nursery Grounds of the Gulf of Mexico and the East Coast Waters of the United States, edited by GLENN R. PARSONS and ERIC R. HOFFMAYER. American Fisheries Society, 2007. http://dx.doi.org/10.47886/9781888569810.ch19.
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<em>Abstract.</em>—From October 1997 to September 2000, we conducted a survey of shark nursery grounds in the northern Gulf of Mexico extending from Bay St. Louis, Mississippi to Perdido Bay, Alabama. The objectives of the survey were to identify shark pupping/nursery grounds, determine their extent, and characterize the environmental conditions prevalent. Collections were made from March to October of each year with at least four sites sampled each month, two sites in Mississippi waters and two sites in Alabama waters. Collections were made using a gill net fished from 1500 until 2200 hours each day. A total of 100 collections were made during the study, resulting in the capture of more than 2,200 sharks. Young-of-the-year and juvenile sharks were collected from many areas in the Mississippi Sound with many sharks taken around Cat, Ship, Horn, Petit Bois, Round, and Dauphin islands. Shark populations along the Mississippi and Alabama gulf coasts are dominated by three species, the Atlantic sharpnose shark <em>Rhizoprionodon terraenovae</em>, the blacktip shark <em>Carcharhinus limbatus</em>, and the finetooth shark <em>C. isodon. </em>Other species captured included the bull shark <em>C. leucas</em>, the scalloped hammerhead <em>Sphyrna lewini</em>, the bonnethead <em>S. tiburo</em>, the spinner shark <em>C. brevipinna, </em>the blacknose shark <em>C. acronotus</em>, and the sandbar shark <em>C. plumbeus</em>. We used analysis of variance to compare the environmental factors present at sites where sharks were present with those at sites where sharks were not present and found significant differences in surface and bottom dissolved oxygen when Atlantic sharpnose sharks were present, surface and bottom temperature and surface dissolved oxygen when finetooth sharks were present, and surface and bottom temperature when blacktip sharks were present. We used unweighted poisson regression to examine the effect of environmental factors on catch per unit effort (CPUE) (sharks 100 m net<sup>–1</sup> h<sup>–1</sup>) and found that surface salinity significantly altered catch of Atlantic sharpnose sharks, surface and bottom temperature and surface dissolved oxygen significantly altered finetooth shark CPUE, and both surface and bottom temperature and dissolved oxygen altered blacktip shark CPUE. To consider interspecific interactions between the three dominant species, we used the Yule coefficient of association and found that young of the year of the three most common species were significantly, positively associated. Future studies of shark abundance and distribution should consider the interactions between co-occurring species. The Mississippi Sound, associated barrier islands, and the lower reaches of the Mobile Bay are important nursery grounds for several shark species, particularly blacktip, Atlantic sharpnose, and finetooth sharks.