Seahorse fingerprints: a new individual identification technique

Freret-Meurer, Natalie Villar; Andreata, José Vanderli; Alves, Maria Alice S.

doi:10.1007/s10641-013-0118-6

Cited by 16 publications

(10 citation statements)

References 32 publications

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“…Las proporciones de sexos en Hippocampus spp. es variable, habiéndose registrado sesgos mayormente hacia los individuos hembras (Quiñe & Romero, 2007;Freret-Meurer et al, 2013) y a veces hacia los machos Mai y Rosa (2009). La proporción de sexos de los individuos estuvo ligeramente sesgada hacia las hembras (H:M 1.21:1), no obstante, este sesgo no fue significativamente diferente de la proporción esperada 1:1.…”

Section: Discussionunclassified

Estadios, Proporción Sexual Y Talla De Captura De Hippocampus Ingens Girard, 1858 (Syngnathiformes: Syngnathidae) a Partir De Una Muestra Incautada en Perú

Chipana-Robles

Valle-Rubio

2021

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Se analizaron 322 individuos de <em>Hippocampus ingens</em> Girard, 1858 “Caballito de mar del Pacífico” de una muestra deshidratada, proveniente de un decomiso de pesca ilegal realizado en Tumbes, Piura y Lambayeque (región norte del Perú) en el año 2016. Se determinaron los valores de talla de captura, proporción sexual y estadios de desarrollo (juvenil o adulto). El análisis morfométrico consistió en determinar la altura total, altura del cuerpo y largo de la cabeza, mientras que la identificación de sexos se basó en caracteres, morfológicos, tales como, la presencia del saco de incubación y quillas leves para machos, asimismo, en el caso de hembras adultas se consideró la mancha oscura debajo de la aleta anal. Las tallas de captura (altura total) fluctuaron entre 87 mm y 160 mm, correspondiente a individuos adultos. No se encontró diferencia significativa al comparar los valores de la altura total en relación con el sexo de los individuos. La proporción de sexos (hembras: machos) fue de 1.21:1. Los resultados obtenidos resultan útiles para la actualización del estado de una población de <em>H. ingens</em> en el norte del Perú y pueden servir de base para el desarrollo de programas de conservación y futuro manejo pesquero de esta especie en Perú.

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Section: Discussionunclassified

Estadios, Proporción Sexual Y Talla De Captura De Hippocampus Ingens Girard, 1858 (Syngnathiformes: Syngnathidae) a Partir De Una Muestra Incautada en Perú

Chipana-Robles

Valle-Rubio

2021

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“…Owing to the dark colour of H. capensis and limited distinct facial markings, alternative approaches, such as the use of facial or spot markings to allow for individual identification as done in other Hippocampus spp. studies (Correia et al ., 2014; Freret‐Meurer et al ., 2013), could be unsuitable. This approach has, however, not been tested in H. capensis , and future research to test this would be beneficial.…”

Section: Discussionmentioning

confidence: 99%

Life history and population dynamics of an endangered seahorse (Hippocampus capensis) within an artificial habitat

Claassens

Harasti

2020

Journal of Fish Biology

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Species-specific life-history information is critical for successful conservation, particularly in establishing an accurate baseline status. Obtaining such information is challenging for most species, but in particular for rare and threatened marine species. To facilitate future conservation of the endangered Knysna seahorse (Hippocampus capensis) this study aimed to determine important life-history information for this species. Visible implant fluorescent elastomer (VIFE) tags were used to mark 78 seahorses within a residential marina estate in the Knysna estuary, South Africa, in February 2018. Using a mark-resight approach, the size and movement patterns of the population and growth rate of seahorses were determined over a 14-month period. The closed population estimate for H. capensis, within Thesen Islands Marina, was estimated to be 134 (118-152 95% C.I.

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“…In addition, photo-identification has been used to obtain accurate data in mark-recapture studies in syngnathid species such as Phycodurus eques (Günther 1865) (Connolly et al, 2002), Nerophis lumbriciformis (Jenyns 1835) (Monteiro et al, 2005), P . taeniolatus (Martin-Smith, 2011) and Hippocampus reidi Ginsburg 1933(Freret-Meurer et al, 2013. This technique uses very little or no handling, thus causing reduced stress in wild populations studied when compared to other methods.…”

Section: Discussionmentioning

confidence: 99%

The use of a non‐invasive tool for capture–recapture studies on a seahorse Hippocampus guttulatus population

Correia¹,

Palma²,

Koldewey³

et al. 2014

Journal of Fish Biology

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In this study, the spot pattern in Hippocampus guttulatus was analysed using a computer programme algorithm that allowed individual comparison. This methodology was first tested in a controlled environment using 51 adult and 55 juvenile H. guttulatus. Positive matches were obtained in 86·3 and 83·6% of the adults and juveniles, respectively. In a second experiment, monthly surveys were carried out in five selected locations in the Ria Formosa Lagoon, south Portugal, over the course of a year and a total of 980 photographs were analysed. Photographed H. guttulatus were re-sighted one to nine times during the course of the survey period with an overall re-sight record of over 30%. Photo-identification was therefore shown to be a useful tool for non-invasive mark-recapture studies that can be successfully used to survey the population abundance of H. guttulatus aged 6 months or older in consecutive years. This could be of great value when considering the assessment of H. guttulatus populations and understanding changes over time.

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Seahorse fingerprints: a new individual identification technique

Cited by 16 publications

References 32 publications

Estadios, Proporción Sexual Y Talla De Captura De Hippocampus Ingens Girard, 1858 (Syngnathiformes: Syngnathidae) a Partir De Una Muestra Incautada en Perú

Estadios, Proporción Sexual Y Talla De Captura De Hippocampus Ingens Girard, 1858 (Syngnathiformes: Syngnathidae) a Partir De Una Muestra Incautada en Perú

Life history and population dynamics of an endangered seahorse (Hippocampus capensis) within an artificial habitat

The use of a non‐invasive tool for capture–recapture studies on a seahorse Hippocampus guttulatus population

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