Reproductive biology of king weakfish, Macrodon ancylodon (Perciformes, Sciaenidae) from the northeastern coast of Brazil

IF 0.1 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY

Revista De Biologia Marina Y Oceanografia Pub Date : 2018-04-01 DOI:10.4067/S0718-19572018000100095

Alana dos Santos Cardoso, Nayara Santos, Z. Almeida, R. N. F. C. Neta, Lorrane Gabrielle Cantanhêde

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引用次数: 1

Abstract

The reproductive biology of Macrodon ancylodon , a commercially important fish widely distributed along South America’s Atlantic coast, is described from 240 specimens collected in northeastern Brazil. Specimens ranged from 18.2 to 33.5 cm in length, exhibiting positive allometry. Total length at first sexual maturity was 21.13 cm. M. ancylodon has an asynchronous gonadal maturation and would be a batch spawner within a reproductive period. Total weight and length of females do not affect the relative fecundity values in this species. Analysis of the gonadosomatic index, condition factor and frequency of maturational stages shows that M. ancylodon was capable of reproducing throughout the year, despite the fact that spawning peaks were observed during November-December and August-September. The results are evidence that the study area is used by M. ancylodon for reproduction. The data will also be important for the development of stock management strategies.

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巴西东北海岸棘齿巨齿王弱鱼的生殖生物学研究

从巴西东北部采集的240个标本中描述了钩吻巨齿龙的生殖生物学，钩吻巨牙龙是一种广泛分布在南美洲大西洋沿岸的重要商业鱼类。标本长度在18.2到33.5厘米之间，表现出阳性的异速测量。第一次性成熟时的总长度为21.13厘米。钩虫性腺发育不同步，在生殖期内会大量产卵。雌性的总重量和身长不影响该物种的相对繁殖力值。对性腺指数、条件因子和成熟期频率的分析表明，尽管在11月至12月和8月至9月期间观察到产卵高峰，但钩虫全年都能繁殖。这些结果证明研究区域被钩虫用于繁殖。这些数据对制定库存管理战略也很重要。

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来源期刊

Revista De Biologia Marina Y Oceanografia 生物-海洋学

CiteScore

0.70

自引率

0.00%

发文量

审稿时长

12 months

期刊介绍： Publicar desde una perspectiva científica, artículos originales, decididos por un proceso de revisión por pares, invitando a expertos de reconocido prestigio en el área. Los trabajos publicados se caracterizarán por su solidez teórica-metodológica, actualidad y relevancia para las ciencias marinas. Se reciben trabajos inéditos derivados de la investigación científica realizada en ambientes marinos y estuarios, en formato de Revisión, Artículos, Notas Científicas, y Obituarios en las siguientes disciplinas:: Biología-Ecología marina Oceanografía física, química y biológica Contaminación marina Geología marina Sistemática, Faunística y Biogeografía Marina Manejo Costero Acuicultura marina Pesquería marina.