Modified Logs as a Means for Rearing and Observing Sapwood/Heartwood Dwelling Passalids (Coleoptera: Passalidae) in the Laboratory

Hernández-Martínez, Gerardo; Castillo, María Luisa

doi:10.1649/568

Cited by 3 publications

(1 citation statement)

References 3 publications

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“…El lugar de colecta está ubicado a 3 km al SO de la ciudad de Xalapa, Estado de Veracruz,(19° 30' 38" N,96° 57' 03" W), a 1300 m sobre el nivel del mar en un remanente de bosque mesófilo de montaña. Los individuos fueron colocados en terrarios de vidrio (37 x 28 x 20 cm) y mantenidos a 27° C, 80 % de humedad relativa y 14 horas de luz, siguiendo el protocolo utilizado por Hernández- Martínez & Castillo (2003).…”

Section: Materials Y Métodosunclassified

Morfología del aparato reproductor en odontotaenius striatopunctatus (percheron, 1835) (coleoptera: passalidae)

Rosales

Castillo

2008

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RESUMENSe describe la anatomía e histología del aparato reproductor de hembras y machos de Odontotaenius striatopunctatus, especie de pasálido frecuente en bosques tropicales de Mesoamérica. El aparato reproductor de las hembras está constituido por un par de ovarios, cada uno con un par de ovariolas, dos oviductos laterales, un largo oviducto medio una cámara genital, una bursa copulatrix y una gran espermateca incluyendo su glándula. Los machos tienen un par de testículos, cada uno con un par de folículos testiculares, sus conductos deferentes, una vesícula seminal por cada lado, un conducto eyaculador y dos pares de glándulas accesorias. Se menciona la incidencia en los machos de variaciones en el número de folículos testiculares, y se pone en evidencia la presencia de espermatóforo en la familia Passalidae. Palabras Clave: Odontotaenius striatopunctatus, Passalidae, aparato reproductor, anatomía, histología, espermatóforo. ABSTRACTFemale and male reproductive system anatomy of Odontotaenius striatopunctatus is described. This passalid species is common inside decomposition logs in the tropical forests of Mesoamerica. The female reproductive system consists of two ovaries with two ovarioles each, two lateral oviducts, a long oviduct, a genital chamber, a bursa copulatrix and a big spermatheca with its gland. The male reproductive system consists of two testes, each with a pair of testicular follicles and respective vas deferens, two seminal vesicles in each side, a long ductus eyaculatorius, the aedeagus, and two pairs of accessory glands. Two males were found with different numbers of testicular follicles. The spermatophore is described by first time for the family.

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Section: Materials Y Métodosunclassified

Morfología del aparato reproductor en odontotaenius striatopunctatus (percheron, 1835) (coleoptera: passalidae)

Rosales

Castillo

2008

AZM

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Mechanisms driving the density–area relationship in a saproxylic beetle

2013

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Mechanisms underlying density-area relationships (correlations between population density and patch size) have rarely been tested experimentally. It is often assumed that higher density on large patches is evidence that large patches are high quality (i.e. have greater survival and reproduction), but the same pattern could result from disproportionate movement from small to large patches. Movement-based and within-patch processes must be experimentally separated to show that large patches are indeed of higher quality, but few studies have done so. We experimentally tested movement-based and within-patch hypotheses to explain the positive density-area relationship observed for a saproxylic (decayed wood-dependent) beetle, Odontotaenius disjunctus Illiger (Coleoptera: Passalidae). In separate experiments we quantified (1) immigration into and (2) finite growth rate within logs (=patches) that varied in size and density of conspecific beetles. A log was 11.7-fold [95 % confidence interval (CI) 3.4-40.8) and 10.5-fold (95 % CI 2.7-40.9) more likely to contain a new immigrant if it was large or contained a conspecific pair of beetles, respectively. Neither log size nor conspecific density was associated with changes in finite growth rate that would lead to higher density: decreased log size and increased conspecific density reduced finite growth rate in direct proportion to the loss in available resources per mating pair. We conclude that movement behavior rather than habitat quality is responsible for the positive density-area relationship for O. disjunctus. An important implication of our results is that population density is an imperfect indicator of habitat quality.

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Phoretic relationship between Lustrochernes grossus (Pseudoscorpionida: Chernetidae) and Odontotaenius striatopunctatus (Coleoptera: Passalidae)

Castillo

Villegas-Guzmán

2016

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Phoresy is considered a non-parasitic partnership between a small animal (phoront) and a large one (host) that result in phoront transportation by the host. Throughout two years of observation and nursing of 16 family groups of the passalid Odontotaenius striatopunctatus, we noticed the presence of the pseudoscorpion Lustrochernes grossus within 11 of their 16 nests, which consisted of rottenwood logs (30 cm long × 15-20 cm in diameter) cut into 2 cm segments and secured with rubber bands to facilitate observation. The presence of pseudoscorpions became evident from the moment the passalids started building their nests creating space and food for their young. Evidence was found that pseudoscorpions can go under the elytra of passalids. Their presence did not prevent the reproduction of the beetles, performed in 13 of the 16 set nests (Fischer’s exact test: P =0.71, N = 16): neither was the number of passalids offspring modified (Mann Whitney U = 11.50, P = 0.2553). On three occasions during spring, L. grossus females carrying brood sac was documented. In this facultative relationship, phoresy and phagophilia could be involved; some hypotheses on the factors that may interfere with it are posed.

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Modified Logs as a Means for Rearing and Observing Sapwood/Heartwood Dwelling Passalids (Coleoptera: Passalidae) in the Laboratory

Cited by 3 publications

References 3 publications

Morfología del aparato reproductor en odontotaenius striatopunctatus (percheron, 1835) (coleoptera: passalidae)

Morfología del aparato reproductor en odontotaenius striatopunctatus (percheron, 1835) (coleoptera: passalidae)

Mechanisms driving the density–area relationship in a saproxylic beetle

Phoretic relationship between Lustrochernes grossus (Pseudoscorpionida: Chernetidae) and Odontotaenius striatopunctatus (Coleoptera: Passalidae)

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