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<p>Basic biological studies play a fundamental role in effective fisheries management. Nevertheless, such information remains limited for many lesser-known shark species and in developing regions. In this context, the present study provides new insights into key biological traits of <i>Mustelus henlei</i> from Ecuadorian waters. Fieldwork was carried out in Jaramijo, Ecuador, between January and October 2024. A notable female-biased sex ratio was observed at landings (2.94:1). Female total lengths ranged from 42.3 to 71.0&#xa0;cm, while males measured between 40.0 and 75.0&#xa0;cm total length (TL). Strong and statistically significant correlations were found between total length (TL) and both precaudal length (PCL) and interdorsal length (IDL). Size at sexual maturity (<i>L</i><sub>50</sub>) was estimated at 51.21&#xa0;cm TL for females and 54.24&#xa0;cm TL for males, with an inflection point of 49.34&#xa0;cm TL for males. The findings presented here contribute to filling critical knowledge gaps in the life history of <i>M. henlei</i> and provide a foundational basis for future population modeling and management strategies.</p>

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Insights into Biological Aspects of the Brown Smooth-Hound Mustelus henlei in the Eastern-Central Pacific Ocean

  • 期刊论文

  • 发表日期：

    2025年11月7日

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  • Valery Baque-Mendoza,
  • Jesús Briones-Mendoza,
  • Klever Mendoza-Nieto,
  • Víctor Hugo Caña-Bozada,
  • Diego Mejía

摘要

Basic biological studies play a fundamental role in effective fisheries management. Nevertheless, such information remains limited for many lesser-known shark species and in developing regions. In this context, the present study provides new insights into key biological traits of Mustelus henlei from Ecuadorian waters. Fieldwork was carried out in Jaramijo, Ecuador, between January and October 2024. A notable female-biased sex ratio was observed at landings (2.94:1). Female total lengths ranged from 42.3 to 71.0 cm, while males measured between 40.0 and 75.0 cm total length (TL). Strong and statistically significant correlations were found between total length (TL) and both precaudal length (PCL) and interdorsal length (IDL). Size at sexual maturity (L50) was estimated at 51.21 cm TL for females and 54.24 cm TL for males, with an inflection point of 49.34 cm TL for males. The findings presented here contribute to filling critical knowledge gaps in the life history of M. henlei and provide a foundational basis for future population modeling and management strategies.