Age and growth of three endemic threatened guitarfishes Pseudobatos horkelii, P. percellens and Zapteryx brevirostris in the western South Atlantic Ocean

Autor(es)

Caltabellotta, Fabio P. ^{[1, 2]} ; Siders, Zachary A. ^[1] ; Murie, Debra J. ^[1] ; Motta, Fabio S. ^[3] ; Cailliet, Gregor M. ^[4] ; Gadig, Otto B. F. ^[5]

Afiliação do(s) autor(es)

^[1] Univ Florida, Sch Forest Resources & Conservat, Fisheries & Aquat Sci Program, 427 McCarty Hall C, POB 110410, Gainesville, FL 32611 - USA

^[2] Sao Paulo State Univ, Dept Biol Sci, Botucatu, SP - Brazil

^[3] Univ Fed Sao Paulo, Marine Ecol & Conservat Lab LABECMar, Santos - Brazil

^[4] Moss Landing Marine Labs, Pacific Shark Res Ctr, Pob 450, Moss Landing, CA 95039 - USA

^[5] Sao Paulo State Univ, Biosci Inst, Elasmobranch Lab, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Fish Biology; v. 95, n. 5, p. 1236-1248, NOV 2019.
• Citações Web of Science: 0

Resumo

The age and growth of three endemic threatened guitarfish species were analysed using vertebrae of Pseudobatos horkelii, P. percellens and Zapteryx brevirostris. Edge and marginal-increment analyses were used to evaluate the periodicity of the formation of the band-pairs, suggesting deposition of one band-pair per year, from late winter to late spring. The von Bertalanffy growth model was used to describe the growth of these species with the following parameters, for pooled sexes: P. horkelii L-infinity = 126.93, k = 0.19 and t(0) = -1.51; P. percellens L-infinity = 109.31, k = 0.16 and t(0) = -1.78; Z. brevirostris L-infinity = 60.37, k = 0.24 and t(0) = -1.42. Our results are essential to understanding the resilience and vulnerability of these species to harvest, which can contribute to management and conservation actions of these species. (AU)

• Processo FAPESP: 10/02397-7 - Dinâmica populacional das raias-viola Rhinobatos horkelli, Rhinobatos percellens e Zapteryx brevirostris (Chondrichthyes, Rhinobatidae) da plataforma continental de São Paulo
• Beneficiário: Fabio Prior Caltabellotta
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 12/00713-4 - Idade, crescimento e mortalidade do cação-frango, Rhizoprionodon lalandii, na costa centro-sul de São Paulo: subsídios para conservação e gestão pesqueira
• Beneficiário: Fabio dos Santos Motta
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado