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Barbini SA, Lucifora LO, Sabadin DE, Figueroa DE. Ecological specialization is associated with high conservation concern in skates (Chondrichthyes, Rajiformes). Anim Conserv 2019. [DOI: 10.1111/acv.12531] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- S. A. Barbini
- Biología de Peces Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Mar del Plata, Buenos Aires Argentina
| | - L. O. Lucifora
- Instituto de Biología Subtropical – Iguazú Universidad Nacional de Misiones, CONICET Puerto Iguazú, Misiones Argentina
| | - D. E. Sabadin
- Biología de Peces Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Mar del Plata, Buenos Aires Argentina
| | - D. E. Figueroa
- Biología de Peces Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Mar del Plata, Buenos Aires Argentina
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Bovcon ND, Cochia PD, Ruibal Núñez J, Vucica M, Figueroa DE. Presence of the telescope fish Mendosoma lineatum in Patagonian waters, a new species in the ichthyological fauna from the south-west Atlantic Ocean. J Fish Biol 2017; 91:1224-1227. [PMID: 28804912 DOI: 10.1111/jfb.13397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 07/18/2017] [Indexed: 06/07/2023]
Abstract
The presence of the telescope fish Mendosoma lineatum in Patagonian waters of Argentina is reported. Mendosoma lineatum is the second species of the Latridae recorded in the south-west Atlantic Ocean and its presence in Patagonia is an addition to both the ichthyological fauna of the Argentinean Sea and the south-west Atlantic Ocean.
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Affiliation(s)
- N D Bovcon
- Laboratorio de Hidrobiología, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Julio A. Roca 115 1° piso, Trelew, 9100, Chubut, Argentina
- Secretaría de Pesca de la Provincia de Chubut, Av. Libertad 279, Rawson, 9103, Chubut, Argentina
| | - P D Cochia
- Laboratorio de Hidrobiología, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Julio A. Roca 115 1° piso, Trelew, 9100, Chubut, Argentina
| | - J Ruibal Núñez
- Laboratorio de Hidrobiología, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Julio A. Roca 115 1° piso, Trelew, 9100, Chubut, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - M Vucica
- Secretaría de Pesca de la Provincia de Chubut, Av. Libertad 279, Rawson, 9103, Chubut, Argentina
| | - D E Figueroa
- Departamento de Ciencias Marinas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, Mar del Plata, 7600, Buenos Aires, Argentina
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Belleggia M, Andrada N, Paglieri S, Cortés F, Massa AM, Figueroa DE, Bremec C. Trophic ecology of yellownose skate Zearaja chilensis, a top predator in the south-western Atlantic Ocean. J Fish Biol 2016; 88:1070-1087. [PMID: 26762303 DOI: 10.1111/jfb.12878] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 11/17/2015] [Indexed: 06/05/2023]
Abstract
The diet and trophic level (TL ) of the yellownose skate Zearaja chilensis in the south-western Atlantic Ocean (35°-54° S), and how these varied in relation to body size, sex, maturity stage, depth and region were determined by analysis of stomach contents. From 776 specimens analysed, 671 (86·5%) ranging from 180 to 1190 mm total length (LT ) had prey in their stomachs. The diet was dominated by fishes, mainly the notothenioid Patagonotothen ramsayi and the Argentine hake Merluccius hubbsi. The consumption of fishes and crabs increased with increasing predator size, and these preys were more important in the north than in the south. Isopods and other crustaceans were consumed more in the south and their consumption decreased as the size of Z. chilensis increased. The TL of Z. chilensis increased with LT from 4·29 to 4·59 (mean 4·53), confirming their ecological role as a top predator. The small and large size classes exhibited a low diet overlap and the highest spatial segregation, whereas medium and large specimens had higher co-occurrence and dietary overlap indices. A clear distinction in tooth shape was noted between sexes in adult specimens, with males having longer cusps. This sexual heterodonty may be related to reproductive behaviour, increasing the grasping ability of males during courtship, because there were no differences in diet between the sexes.
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Affiliation(s)
- M Belleggia
- Instituto Nacional de Investigación y Desarrollo Pesquero, Paseo Victoria Ocampo s/n, Mar del Plata, B7602HSA, Argentina
- Laboratorio de Ictiología, Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Funes 3350, B7602AYL, Mar del Plata, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ, Cuidad Autónoma de Buenos Aires, Argentina
| | - N Andrada
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Buenos Aires, Argentina
| | - S Paglieri
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, Buenos Aires, Argentina
| | - F Cortés
- Instituto Nacional de Investigación y Desarrollo Pesquero, Paseo Victoria Ocampo s/n, Mar del Plata, B7602HSA, Argentina
| | - A M Massa
- Instituto Nacional de Investigación y Desarrollo Pesquero, Paseo Victoria Ocampo s/n, Mar del Plata, B7602HSA, Argentina
| | - D E Figueroa
- Laboratorio de Ictiología, Instituto de Investigaciones Marinas y Costeras, Universidad Nacional de Mar del Plata, Funes 3350, B7602AYL, Mar del Plata, Argentina
| | - C Bremec
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida Rivadavia 1917, C1033AAJ, Cuidad Autónoma de Buenos Aires, Argentina
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Spath MC, Delpiani G, Brunetti NE, Sakai M, Figueroa DE. First report of the black gemfish Nesiarchus nasutus (Perciformes: Gempylidae) in Argentinean waters. BRAZ J BIOL 2015; 75:285-8. [PMID: 26132009 DOI: 10.1590/1519-6984.10913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 10/04/2013] [Indexed: 11/21/2022] Open
Abstract
The gempylid Nesiarchus nasutus is reported for the first time from Argentinean waters, the southernmost occurrence of the species in the Southwestern Atlantic. This suggests that the fluctuating environmental characteristics of the area would be proper for the presence of tropical and subtropical species.
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Affiliation(s)
- M C Spath
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas, Mar del Plata, Argentina
| | - G Delpiani
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas, Mar del Plata, Argentina
| | - N E Brunetti
- Instituto Nacional de Investigación y Desarrollo Pesquero, Mar del Plata, Argentina
| | - M Sakai
- National Research Institute of Far Seas Fisheries, Yokohama-shi, Japan
| | - D E Figueroa
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Consejo Nacional de Investigaciones Científicas y Técnicas, Mar del Plata, Argentina
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Barbini SA, Scenna LB, Figueroa DE, Díaz de Astarloa JM. Effects of intrinsic and extrinsic factors on the diet of Bathyraja macloviana, a benthophagous skate. J Fish Biol 2013; 83:156-169. [PMID: 23808698 DOI: 10.1111/jfb.12159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 04/25/2013] [Indexed: 06/02/2023]
Abstract
The effects of intrinsic (sex, maturity stage and body size) and extrinsic (depth and region) factors on the diet of Bathyraja macloviana, in the south-west Atlantic Ocean, were evaluated using a multiple-hypothesis modelling approach. Bathyraja macloviana fed mainly on polychaetes followed by amphipods, isopods and decapods. Effects of intrinsic and extrinsic factors on diet composition of this species were found. The consumption of polychaetes had a humped relationship with total length (L(T), and isopods and decapods increased with increasing L(T). Immature individuals preyed on amphipods more heavily than mature individuals. Furthermore, region and depth had an important effect on the consumption of isopods, decapods and amphipods. Such ontogenetic changes and spatial patterns may provide insights into understanding the regulatory mechanisms of marine communities.
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Affiliation(s)
- S A Barbini
- Laboratorio de Ictiología, Instituto de Investigaciones Marinas y Costeras-IIMyC-CONICET, Universidad Nacional de Mar del Plata-UNMdP, Funes 3350, Mar del Plata B7602AYL, Argentina.
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Mabragaña E, Figueroa DE, Scenna LB, Díaz de Astarloa JM, Colonello JH, Delpiani G. Chondrichthyan egg cases from the south-west Atlantic Ocean. J Fish Biol 2011; 79:1261-1290. [PMID: 22026605 DOI: 10.1111/j.1095-8649.2011.03111.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Egg cases of 21 oviparous chondrichthyan species from the south-west Atlantic Ocean are described and compared. The catshark Schroederichthys bivius has a cigar-shaped egg case with curled tendrils only at the posterior end. Egg cases of the elephant fish Callorhinchus callorynchus are spindle-shaped with anterior and posterior tubular extensions and lateral flanges. The skate Amblyraja doellojuradoi presents medium-sized egg cases (71 mm in length) with a lateral keel extending to the first portion of the horns. The endemic skate species of the genus Atlantoraja have medium to large egg cases (69-104 mm in length) and present relatively large posterior horns. Egg cases of the genus Bathyraja have a medium size, 75-98 mm in length, and are characterized by a very similar morphology, a relatively smooth to rough surface case and posterior horns strongly curved inwards. Egg cases of the genera Dipturus and Zearaja are very large, 115-230 mm in length, and have a well-developed posterior apron. Despite the problematical identification of skates at species level, the egg capsules of the endemic genus Psammobatis are easily diagnosed; the capsules are small (25-53 mm in length), those of Psammobatis rutrum being the smallest known to date in the world. Egg cases of Rioraja agassizi have a medium size, 61-68 mm in length, relatively straight sides, a smooth surface and silky attachment fibres placed in the lateral keel next to each horn. Those of the genus Sympterygia are small to medium sized, 51-86 mm in length, and display the thickest lateral keel and the longest posterior horns among the skates of the world. Egg cases can be a useful tool for identifying species and egg-laying areas; therefore, a provisional key for the south-west Atlantic Ocean chondrichthyan capsules is presented.
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Affiliation(s)
- E Mabragaña
- Departamento de Ciencias Marinas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, B7602AYL Mar del Plata, República Argentina.
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Díaz de Astarloa JM, Bezzi SI, González Castro M, Mabragaña E, Hernández D, Delpiani SM, Figueroa DE, Cousseau MB, Deli Antoni MY, Tringali L. Morphological, morphometric, meristic and osteological evidence for two species of hake (Actinopterygii: Gadiformes: Merluccius) in Argentinean waters. J Fish Biol 2011; 78:1336-1358. [PMID: 21539546 DOI: 10.1111/j.1095-8649.2011.02937.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Morphologically, both classic and landmark-based morphometry and meristic analyses of 241 specimens of Merluccius, along with the re-examination of six paratype specimens of Merluccius hubbsi, the holotype and three paratypes of Merluccius patagonicus and the syntype of Merluccius australis revealed the presence of only two species of Merluccius in Argentinean waters. Internal structures (hyomandibula, urohyal and sagitta otolith) of M. hubbsi were compared to those reported for M. patagonicus and were shown to have identical morphology. Type specimens of M. patagonicus showed a complete overlap in morphometric and meristic characters with M. hubbsi, whereas M. australis had a greater number of second dorsal and anal-fin rays, and more lateral-line scales. In addition, M. australis had a smaller eye and longer snout than M. hubbsi and M. patagonicus. The results indicate that there is no evidence for a third hake species in Argentinean waters. Merluccius patagonicus is a synonym of M. hubbsi.
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Affiliation(s)
- J M Díaz de Astarloa
- Departamento de Ciencias Marinas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350, B7602AYL Mar del Plata, República Argentina.
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Delpiani SM, Deli Antoni MY, Barbini SA, Figueroa DE. First record of a dicephalic specimen of tope Galeorhinus galeus (Elasmobranchii: Triakidae). J Fish Biol 2011; 78:941-944. [PMID: 21366584 DOI: 10.1111/j.1095-8649.2010.02890.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The first case of dicephalia in tope Galeorhinus galeus analysed in developing foetuses removed from a pregnant female caught off the Mar del Plata coastal waters, Argentine Sea, is reported here.
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Affiliation(s)
- S M Delpiani
- Universidad Nacional de Mar del Plata, Facultad de Ciencias Exactas y Naturales, Departamento de Ciencias Marinas, Funes 3350, B7602AYL, Mar del Plata, Argentina.
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Diaz AO, Garca AM, Figueroa DE, Goldemberg AL. The Mucosa of the Digestive Tract inMicropogonias furnieri: A Light and Electron Microscope Approach. Anat Histol Embryol 2008; 37:251-6. [DOI: 10.1111/j.1439-0264.2007.00837.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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