Un breve recorrido en vídeo por Everglades National Park durante el verano de 2011.
Friday, September 23, 2011
Thursday, September 22, 2011
Long Pine, Everglades National Park
Una serie de Long Pine que reúne lagunas con reflejos, caracoles arborícolas y un ave rapaz.
Photos © Juan C Aguero
Monday, September 19, 2011
Flamingo and Long Pine, Everglades National Park
Una secuencia entre la costa de Flamingo y las lagunas de Long Pine en Everglades National Park.
Tuesday, September 13, 2011
Liguus fasciatus mating season end
Dos fotografías de caracoles arborícolas Liguus fasciatus durante la temporada reproductiva. El texto científico citado se conserva íntegro.
Florida Tree Snails are hermaphroditic, meaning they have both male and female sexual organs. Hillis (1989) investigated with laboratory breeding and found that partial self-fertilization (a single clutch containing both self-fertilized and outcrossed eggs) does occur in L. fasciatus solidus. Their genetalia are located on the right side of the head and behind the antennae. The snail is sexually mature in their third year and they can locate mates by following slime trials (Brown, 1978). Mating occurs between the months of June and August with a 1-2 day courtship and then egg deposition occurs in the months of September and October (Jones, 1954). One to fifty eggs, which are a thin, elliptical, pale brown, calcareous shell, (Pilsbry, 1912) are deposited in the nests built in the leaf litter four to five centimeters deep (Voss, 1976). The eggs hatch the following April in concurrence with the beginning of the rainy season. Simpson (1929a) and Voss (1976 observed excessive numbers of dead snails soon after the egg laying period which reflects a high post reproductive mortality rate.Jason R. Fadely May 2009 "Population Distribution of Liguus fasciatus solidus in Long Pine Key of Everglades National Park."
Photos © Juan C Aguero
El vídeo original de esta observación ya no está disponible; se conservan las fotografías y el texto citado.
Sunday, September 11, 2011
Remembering 9/11
Tres paisajes de los Everglades publicados el 11 de septiembre de 2011 en recuerdo de las víctimas del 11-S.
Photos © Juan C Aguero
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