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  1. Home
  2. Browse by Author

Browsing by Author "Milessi, Andres C."

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    First report of the hapuku wreckfish Polyprion oxygeneios (Polyprionidae) in Argentinian waters
    (2021) Milessi, Andres C.; De Wysiecki, Agustin M.; Carvalho Filho, Alfredo; Wiff, Rodrigo
    The hapuku wreckfish Polyprion oxygeneios is recorded for the first time in Argentinian waters. Four specimens were caught off Mar del Plata (38 degrees S, Argentina) in depths between 60 and 260 m during austral summer (three by sport fishers and one in a research cruise). Up to the present, this species was consistently misidentified with its congener, the common wreckfish P. americanus, off Argentina. These records represent a connection between previous records from Brazil and the more austral circumglobal distribution of the species.
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    Growth estimates of young-of-the-year broadnose sevengill shark, Notorynchus cepedianus, a top predator with poorly calcified vertebrae
    (2022) Javier Jaureguizar, Andres; Cortes, Federico; Matias Braccini, J.; Wiff, Rodrigo; Milessi, Andres C.
    The broadnose sevengill shark, Notorynchus cepedianus (Peron, 1807), is a large marine top predator in temperate coastal ecosystems. Some aspects of its life history have been determined, but its growth pattern is yet to be fully understood. The authors used a multi-modelling approach and a sensitivity test to estimate growth parameters from young-of-year (YOY) length data collected off San Antonio Cape (SAC), Argentina, a critical habitat in the Southwest Atlantic Coastal Zone (SACZ). The best selected model, a sex-combined logistic growth model, estimated an asymptotic length (L-infinity) of 92.58 cm TL (95% C.I.: 86.48-105.89 cm), a growth coefficient (K) of 0.006818 days (-1) (95% C.I.: 0.004948-0.008777) and a size at birth (L-0) of 40.73 cm. The predicted annual growth (i.e., L1 - L-0) was 43.2 cm TL. Males had smaller L-0, higher K and achieved larger sizes after 1 year. The YOY in SAC attained a larger L-1 and grew faster than their Australian and South African wild counterparts. The consistent year-round presence of YOY in the SAC highlights the importance of this area as a pupping ground and potential nursery for N. cepedianus; this has direct implications for the allocation of research and management effort for the conservation of this species in the Southwest Atlantic.
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    New records of Bramidae in Chilean waters: the sickle pomfret (Taractichthys steindachneri) and the rough pomfret (Taractes asper)
    (2023) Carvalho Filho, Alfredo; Wiff, Rodrigo; Milessi, Andres C.; Flores, Andres
    Artisanal fisheries in center-southern Chile targeted a large amount of southern ray bream (Brama australis), whereas other species of Bramidae are negligible in the catches. During a small-scale fishing trip targeting B. australis off the coast of Lebu Harbour (38 degrees S) in August 2021, two specimens of other Bramidae species were also caught, but the fishermen did not identify them. The first corresponded to a sickle pomfret, Taractichthys steindachneri, the first record of the species in Chilean waters. The second specimen corresponded to the rough pomfret, Taractes asper, already reported from the Chilean coast, but with only one previous record from the eighties. We discussed how the occurrence of T. steindachneri and T. asper provide insights regarding the B. australis demography in the south Pacific.

Bibliotecas - Pontificia Universidad Católica de Chile- Dirección oficinas centrales: Av. Vicuña Mackenna 4860. Santiago de Chile.

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