Video Experimental Relacionado
Updated: Jul 12, 2026
04:28
Eyestalk Ablation to Increase Ovarian Maturation in Mud Crabs
Published on: March 31, 2023
Migración vertical de las mareas: un ritmo endógeno en las larvas de cangrejo de estuario
Science (New York, N.Y.)
|September 7, 1979
Resumen
Las larvas de cangrejo Rhithropanopeus harrisii capturadas en el campo exhiben un ritmo de marea endógeno de migración vertical. Este comportamiento innato ayuda a retener larvas planctónicas dentro de los estuarios, apoyando a las poblaciones progenitoras.
Área de la Ciencia:
- Biología marina Biología marina.
- Ecología de los estuarios.
- Comportamiento de las larvas de crustáceos.
Sus antecedentes:
- Las larvas planctónicas de los cangrejos estuarios son cruciales para la dispersión y retención de la población.
- Comprender el comportamiento de las larvas es clave para la dinámica del ecosistema estuariano.
Objetivo del estudio:
- Para investigar la presencia y el origen de los ritmos de migración vertical de las mareas en las larvas de Rhithropanopeus harrisii.
- Para determinar si este ritmo es endógeno o inducido por el medio ambiente.
Principales métodos:
- Se recogieron larvas de Rhithropanopeus harrisii del campo.
- Las larvas se mantuvieron en condiciones constantes de laboratorio.
- Se observaron y analizaron los patrones de migración vertical.
Principales resultados:
- Las larvas capturadas en el campo mostraron un ritmo de marea distinto de migración vertical.
- Las larvas criadas en laboratorio no exhibieron este patrón de migración de marea.
- El ritmo parece ser un comportamiento endógeno, innato.
Conclusiones:
- Las larvas de Rhithropanopeus harrisii poseen un ritmo de marea endógeno de migración vertical.
- Este comportamiento innato es crítico para la retención de larvas en entornos estuarinos.
- Los ritmos endógenos mejoran la supervivencia y la proximidad de las larvas a las poblaciones parentales.
Videos de Conceptos Relacionados
00:53Migration
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
01:06Fixed Action Patterns
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
01:56Gastrulation
Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of intricate cellular movements, which in humans transforms a flat, “bilaminar disc” composed of two cell sheets into a three-tiered structure. In the resulting embryo, the endoderm serves as the bottom layer, and stacked directly above it is the intermediate mesoderm, and then the uppermost ectoderm. Respectively, these tissue strata will form...
02:32Osmoregulation in Fishes
When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
02:45Biological Clocks and Seasonal Responses
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
01:47Osmoregulation in Insects
Malpighian tubules are specialized structures found in the digestive systems of many arthropods, including most insects, that handle excretion and osmoregulation. The tubules are typically arranged in pairs and have a convoluted structure that increases their surface area.