Mexican blindcats genus Prietella (Siluriformes: Ictaluridae): an overview of recent explorations

Hendrickson, Dean A.; Krejca, Jean K.; Martinez, Juan Manuel Rodríguez

doi:10.1007/978-94-015-9795-1_26

Cited by 3 publications

(14 citation statements)

References 7 publications

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“…In the resting position, individuals of P. sanguijuela remain stationary and laterally supported. Hendrickson et al (2001) and Krejca (2003) observed this habit in Prietella phreatophila Carranza 1954, a cave catfish from Mexico and south Texas, U.S.A., regions. As this stationary position makes the species more vulnerable to their predators, these authors suggest that this behaviour probably reflects the absence of predators in their natural habitat.…”

Section: Discussionmentioning

confidence: 93%

“…When the gills are not yet formed, gas exchange occurs through the skin. Hendrickson et al () and Krejca () observed that opercular pumping rates in the blind catfish P . phreatophila declined significantly during the periods of inactivity in a torpid form (Krejca, ).…”

Section: Discussionmentioning

confidence: 99%

“…When the gills are not yet formed, gas exchange occurs through the skin. Hendrickson et al (2001) and Krejca (2003) observed that opercular pumping rates in the blind catfish P. phreatophila declined significantly during the periods of inactivity in a torpid form (Krejca, 2003). The decrease in frequency of opercular movements in individuals of P. sanguijuela at rest may indicate a possible accessory device to supplement or replace gill respiration.…”

Section: Discussionmentioning

confidence: 99%

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Behaviour, feeding habits and ecology of the blind catfish Phreatobius sanguijuela (Ostariophysi: Siluriformes)

Ohara

Costa

Fonseca

2016

Journal of Fish Biology

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The subterranean fish Phreatobius sanguijuela, originally described from Bolivia, was captured in different wells near São Francisco do Guaporé, Rondônia State, Brazil. Thirty wells were investigated in April and July 2012, and September 2013. These surveys resulted in the capture of 58 individuals from eight wells and comprised three to 14 individuals per well. The capture of the individuals allowed a detailed evaluation of their colours in life, behaviour in the field and in captivity, aspects of their biology, confirmation of the species identification and provided new diagnostic characteristics to distinguish between P. sanguijuela and Phreatobius dracunculus. Cannibalism, territorialism, agonistic interactions and phototaxis behaviour were not observed. Phreatobius sanguijuela exhibited cryptobiotic habits and two behaviours under stressful conditions. The analysis of stomach contents reveals that this species apparently feeds on invertebrates, almost exclusively on earthworms. The sex ratio was 1:1. The absence of opercular movement during the resting period associated with intense blood irrigation of the skin indicates a possible cutaneous respiration as an alternative form of gas exchange. Local people often mistake P. sanguijuela for helminths and have the habit of releasing non-native fishes into the wells or to use chemicals to eliminate them. The consequence of this habit for the conservation of the species requires further evaluation.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Behaviour, feeding habits and ecology of the blind catfish Phreatobius sanguijuela (Ostariophysi: Siluriformes)

Ohara

Costa

Fonseca

2016

Journal of Fish Biology

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“…Posteriormente, Botosaneanu y Iliffe (2002b) describieron una subespecie nueva, C. texensis mexicensis. Esta especie se registró como C. texensis en la cueva Sótano de Amezcua, Ciudad Acuña, Coahuila (Hendrickson et al, 2001;Krejca, 2003) y cueva de La Espantosa, Lampazos, Nuevo León (Hendrickson et al, 2001). Observaciones.…”

Section: Familia Anthuridae Leach 1814unclassified

“…Los ejemplares de la cueva del Nacimiento del río Frío se recolectaron en aguas con temperatura de 21.5 °C, pH = 7.76, concentración de oxígeno disuelto de 3.4 a 4.4 mg/l, conductividad específi ca 0.43 a 0.52 mScm -1 y potencial redox de 361a 363 mV. Esta especie cohabita con S. pelaezi en la localidad de Ojo Encantado y en las cuevas del área de Purifi cación con S. endeca (sierra Madre Oriental al oeste de Ciudad Victoria, Tamaulipas, donde se hallan una gran cantidad de cuevas) (Hendrickson et al, 2001).…”

Section: Género Speocirolana Bolívar Y Pieltain 1950unclassified

Lista anotada de los isópodos acuáticos epicontinentales de México (Crustacea: Isopoda)

et al. 2009

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Resumen. El presente trabajo integra una lista de especies de crustáceos isópodos acuáticos continentales de México con referencias taxonómicas originales, sinonimias, localidades tipo y distribución. El listado comprende un total 6 familias que agrupan 49 especies, de las cuales sólo 10 son epigeas, mientras que las 39 restantes son hipogeas registradas en manantiales termales y cuevas de los sectores oriental y centro del país, así como en cenotes de los estados de Yucatán y Quintana Roo. Los grupos más diversifi cados en México son cirolánidos y asélidos, que se encuentran tanto en aguas superfi ciales como en hábitats hipogeos. La región geográfi ca con mayor número de especies es el noreste, de Chihuahua a Tamaulipas, en tanto que carecen de registros toda la vertiente del Pacífi co y algunos estados del centro y sur del país. Con base en los registros existentes se discute el patrón de distribución y se sugieren 4 áreas de concentración de especies en México. Se hace un análisis del estado de conservación de los isópodos acuáticos de México. Existe una notable asimetría entre la rareza y la vulnerabilidad de la mayoría de las especies y el grado de protección que se les asignó dentro de los instrumentos de conservación del gobierno mexicano.

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Prevalence of parasitism in the Grotto Sculpin (Cottus specus), a new species of cave-adapted fish from southeastern Missouri, USA

Day¹,

Starkey²,

Gerken³

2014

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Acanthocephalan parasites infecting the newly described Grotto Sculpin (Cottus specus), a state-threatened and federally endangered troglomorphic fish endemic to Perry County, Missouri, were identified in fish from six cave and four non-cave karst streams. Infection rate and infestation severity were higher among fish from cave streams as compared to non-cave streams. Fish from several caves presented with cases of severe infection and near complete parasite occupation of the intestinal tract. Increased cannibalism and variable water quality are proposed as possible explanations for increased Grotto Sculpin parasitism. This observation suggests that the health of cave fauna may be tied to diet and host population dynamics, and that species subject to severe dietary restrictions and the effects of anthropogenic disturbances may have high vulnerability and conservation risks.

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Mexican blindcats genus Prietella (Siluriformes: Ictaluridae): an overview of recent explorations

Cited by 3 publications

References 7 publications

Behaviour, feeding habits and ecology of the blind catfish Phreatobius sanguijuela (Ostariophysi: Siluriformes)

Behaviour, feeding habits and ecology of the blind catfish Phreatobius sanguijuela (Ostariophysi: Siluriformes)

Lista anotada de los isópodos acuáticos epicontinentales de México (Crustacea: Isopoda)

Prevalence of parasitism in the Grotto Sculpin (Cottus specus), a new species of cave-adapted fish from southeastern Missouri, USA

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