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Courtship and Reproduction of the Whitetip Reef Shark Triaenodon obesus (Carcharhiniformes: Carcharhinidae) in an Ex Situ Environment, with a Description of the Late Embryonic Developmental Stage. Animals (Basel) 2022; 12:ani12233291. [PMID: 36496812 PMCID: PMC9737276 DOI: 10.3390/ani12233291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/22/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
Elasmobranchs represent a group of species under considerable anthropic pressure because of the scale of industrial and artisanal fisheries and the loss of essential areas for nursery and feeding, which are causing substantial population losses around the world. Reproduction in an ex situ environment enables a healthy population to be built and maintained in networks of public aquariums, increasing our knowledge of elasmobranch reproductive biology and offering the opportunity for reintroductions in areas where native populations have been removed. The study reports two successful pregnancies of the whitetip reef shark Triaenodon obesus, considered a vulnerable species by the International Union for the Conservation of Nature. Copulation and gestation data are provided, including ultrasound recordings of the late stage of embryo development. Ultrasonography was performed with the GE Logiq and convex transducer and revealed a fetus with defined fins and organogenesis, with definition of eyes, gills, liver, a heart with individualized chambers, partially defined kidneys, and a well-defined spiral intestine. A cartilaginous skeleton forming a posterior acoustic shadow was detailed, as well as a moving fetus with a biparietal diameter of 6.47 cm and a heart rate of 62 Beats Per Minute on spectral Doppler. This is the first successful reproduction of T. obesus in an aquarium in Brazil.
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Love MS, Bizzarro JJ, Cornthwaite AM, Frable BW, Maslenikov KP. Checklist of marine and estuarine fishes from the AlaskaYukon Border, Beaufort Sea, to Cabo San Lucas, Mexico. Zootaxa 2021; 5053:1-285. [PMID: 34810850 DOI: 10.11646/zootaxa.5053.1.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Indexed: 11/04/2022]
Abstract
This paper is a checklist of the fishes that have been documented, through both published and unpublished sources, in marine and estuarine waters, and out 200 miles, from the United States-Canadian border on the Beaufort Sea to Cabo San Lucas, Mexico. A minimum of 241 families and 1,644 species are known within this range, including both native and nonnative species. For each of these species, we include maximum size, geographic and depth ranges, whether it is native or nonnative, as well as a brief mention of any taxonomic issues.
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Affiliation(s)
- Milton S Love
- Marine Science Institute, University of California, Santa Barbara, CA 93106.
| | - Joseph J Bizzarro
- Cooperative Institute for Marine Ecosystems and Climate, University of California, Santa Cruz, 110 McAllister Way, Santa Cruz, CA 95060. .
| | - A Maria Cornthwaite
- Pacific Biological Station, Fisheries and Oceans Canada, 3190 Hammond Bay Road, Nanaimo, BC, V9T 6N7, Canada .
| | - Benjamin W Frable
- Marine Vertebrate Collection, Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093-0244, USA. .
| | - Katherine P Maslenikov
- University of Washington Fish Collection, School of Aquatic and Fishery Sciences and Burke Museum of Natural History and Culture, 1122 NE Boat St., Seattle, WA 98105.
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Adelir-Alves J, Spier D, Gerum HLN, Machado LF, Spach HL, Boza BR, Oliveira C. Plectorhinchus macrolepis (Actinopterygii: Haemulidae) in the western Atlantic Ocean. JOURNAL OF FISH BIOLOGY 2019; 95:1156-1160. [PMID: 31390056 DOI: 10.1111/jfb.14117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 08/06/2019] [Indexed: 06/10/2023]
Abstract
Morphometric measurements, meristic counts and DNA barcoding identified the presence of a biglip grunt Plectorhinchus macrolepis in the western Atlantic Ocean. As the species is endemic to the tropical eastern Atlantic Ocean and has not previously been reported in the western Atlantic Ocean, we discuss the possible means by which it might have dispersed to the western Atlantic Ocean. Even though this species is not considered established in Paranaguá Bay, we advocate monitoring of possible new individuals and other exotic fish species.
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Affiliation(s)
- J Adelir-Alves
- Programa de Pós-Graduação em Zoologia, Centro de Estudos do Mar, Laboratório de Ecologia de Peixes, Universidade Federal do Paraná, Curitiba, Brazil
| | - D Spier
- Centro de Estudos do Mar, Programa de Pós-Graduação em Sistemas Costeiros e Oceânicos, Universidade Federal do Paraná, Pontal do Paraná, Brazil
| | - H L N Gerum
- Associação Comunitária de Pescadores e Aquicultores de Pontal do Sul, Pontal do Paraná, Brazil
| | - L F Machado
- Centro de Referência em Navegação e Pesca Marítima, Instituto Federal de Santa Catarina, Campus Itajaí, Itajaí, Brazil
| | - H L Spach
- Programa de Pós-Graduação em Zoologia, Centro de Estudos do Mar, Laboratório de Ecologia de Peixes, Universidade Federal do Paraná, Curitiba, Brazil
- Centro de Estudos do Mar, Programa de Pós-Graduação em Sistemas Costeiros e Oceânicos, Universidade Federal do Paraná, Pontal do Paraná, Brazil
| | - B R Boza
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, Brazil
| | - C Oliveira
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, Brazil
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Morales N, Coghlan AR, Hayden G, Guajardo P. First sighting of a tropical benthic reef shark species at Rapa Nui: chance dispersal or a sign of things to come? JOURNAL OF FISH BIOLOGY 2019; 95:642-646. [PMID: 30963562 DOI: 10.1111/jfb.13977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 04/08/2019] [Indexed: 06/09/2023]
Abstract
On 20 December 2017, a mature Triaenodon obesus was observed at Hanga Roa Bay, Rapa Nui (Easter Island) at c.18 m depth. This observation increases both the range of T. obesus in the Pacific Ocean and the number of elasmobranch species at Rapa Nui. In combination with other recent sightings further extending the southern range of this species during the Austral summer, sea surface temperature is suggested as key to southern dispersal.
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Affiliation(s)
- Naiti Morales
- Millennium Nucleus for Ecology and Sustainable Management of Oceanic Islands (ESMOI)
- Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo
| | - Amy Rose Coghlan
- Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Australia
| | | | - Paula Guajardo
- Millennium Nucleus for Ecology and Sustainable Management of Oceanic Islands (ESMOI)
- Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo
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Soeth M, Adelir-Alves J, Loose R, Daros FA, Spach HL. First record of Pomacanthus maculosus (Perciformes, Pomacanthidae) in the south-western Atlantic Ocean. JOURNAL OF FISH BIOLOGY 2018; 93:988-991. [PMID: 30198171 DOI: 10.1111/jfb.13791] [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: 04/25/2018] [Accepted: 08/31/2018] [Indexed: 06/08/2023]
Abstract
A single Pomacanthus maculosus was filmed during a scuba diving survey on a rocky reef from southern Brazil. The body shape and coloration pattern confirmed the species identification. The biological and ecological characteristics of P. maculosus and the long distance of Brazil from its original distribution strongly suggest of an anthropogenic pathway of dispersion.
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Affiliation(s)
- Marcelo Soeth
- Programa de Pós-Graduação em Sistemas Costeiros e Oceânicos, Centro de Estudos do Mar, Universidade Federal do Paraná, Pontal do Paraná, Brazil
- Laboratório de Ecologia de Peixes, Centro de Estudos do Mar, Universidade Federal do Paraná, Pontal do Paraná, Brazil
| | - Johnatas Adelir-Alves
- Laboratório de Ecologia de Peixes, Centro de Estudos do Mar, Universidade Federal do Paraná, Pontal do Paraná, Brazil
- Programa de Pós-Graduação em Zoologia, Departamento de Zoologia, Universidade Federal do Paraná, Curitiba, Brazil
| | - Robin Loose
- Associação MarBrasil, Pontal do Paraná, Brazil
| | - Felippe A Daros
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Campus Experimental de Registro, Coordenadoria de Curso de Engenharia da Pesca, Registro, SP, Brazil
| | - Henry L Spach
- Programa de Pós-Graduação em Sistemas Costeiros e Oceânicos, Centro de Estudos do Mar, Universidade Federal do Paraná, Pontal do Paraná, Brazil
- Laboratório de Ecologia de Peixes, Centro de Estudos do Mar, Universidade Federal do Paraná, Pontal do Paraná, Brazil
- Programa de Pós-Graduação em Zoologia, Departamento de Zoologia, Universidade Federal do Paraná, Curitiba, Brazil
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