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Male reproductive competition and sexual selection in the field cricket Gryllus integer
Male reproductive competition and sexual selection were studied in the field cricket Gryllus integer in central Texas. Male acoustical insects typically contribute little parental investment to their offspring, a situation ...
A study of halotolerance in blue-green algae
General characteristics of blue-green algal halotolerance were studied by growth experiments and selected analyses. Variation in NaCl concentration was used to mimic salinity. Marine isolates were more halotolerant (8 to ...
Structure and respiratory function in the gills of the blue crab, Callinectes sapidus (Rathbun)
1. The paired Milne-Edwards openings represent the only significant entry points for ventilatory flow. Setae associated with the opening may serve to filter the inhalent water. 2. The ventral surface of the gill sieve is ...
Characteristics of ventilation in Callinectes sapidus (Rathbun)
1. Ventilation volume (V̇ [subscript G]) was monitored in the blue crab Callinectes sapidus using an electromagnetic flow probe. Mean resting value of ventilation volume for a 200g crab was 146±81ml•min⁻¹, oxygen consumption ...