Reproductive biology of Aspredo aspredo

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Reproductive biology of Aspredo aspredo

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BORGES, M. D. S., JIMENEZ, É. A., BARBOSA, N. D., Amaral, M. T., & AMARAL, M. T. 2021. REPRODUCTIVE BIOLOGY OF BANJO, Aspredo aspredo LINAEUS, 1758 (ASPREDINIDAE) AMAZON COAST, CABO ORANGE, AMAPÁ, BRASIL. In, A estruturação e reconhecimento das ciências biológicas na contemporaneidade (Organizadores Clécio Danilo Dias da Silva, Daniele Bezerra dos Santos). Ponta Grossa -
PR: Atena, 2021: 81-92. pp. DOI 10.22533/at.ed.5852106047

https://www.atenaeditora.com.br/post-artigo/48381
ABSTRACT: This study aimed to presentinformation about the reproductive biology of the banjo (Aspredo aspredo) in the Cabo Orange National Park (PNCO), in the state of Amapá. The individuals were sampled at four collection points between January / 2014 and October / 2015. During the work fild we collected and analyzed 1,184 specimens of A. aspredo, 854 females, 321 males and 9 with undefined sex. The individuals exhibited a total length (TC) of 18.70 to 50.50 cm, with females presenting greater frequency in the class of 35 to 40 cm and the males, in the class of 30 to 35 cm. Most of the specimens captured (650 individuals) had stage D (spawned) gonads, mainly in August, September and October. In January / 2014 there was a high number of individuals with mature gonads (stage C). The average length of first maturation (L50) was estimated at 28.6 cm WC for females and 29.12 cm WC for males. The PNCO area is an important environment for the development of A. aspredo, serving mainly as a breeding area, offering shelter and food to individuals of this species.
KEYWORDS: Unit of conservation - Siluriformes - Reproduction.
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Figura 2 - Exemplar de Aspredo aspredo capturado no Parque Nacional do Cabo Orange,<br />Amapá, Brasil
Figura 2 - Exemplar de Aspredo aspredo capturado no Parque Nacional do Cabo Orange,
Amapá, Brasil
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