marine, only the strong will of the people, to reach the other shore. this sentence let me know the journey of life cannot always be smooth sailing, will experience trials and tribulations, stubborn and unyielding people who always have difficulties as motivation, courage, never say die; a ...
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As we demonstrate, life-history traits of female stickle- back show varying degrees of apparent plasticity. The likelihood that plasticity will evolve in a particular trait depends on several factors, one of which is the response time between exposure to a cue and the expression of an ...
However, a difference in δ13C emerges during the second decade: female δ13C values are elevated relative to males. This could indicate that teenage females consumed higher amounts of low-trophic-level, marine-derived protein, such as shellfish. During later adult years t...
The majority of flies lay eggs, which hatch into tiny larvae after a few hours or several days. The number of eggs laid by a female varies from 1 to about 250. However, a number of successive batches may be laid. Thegreenbottle fly(Lucilia sericata) has laid nearly 2,000 eggs in cap...
female into the water and fertilized there by sperm released from the male. The eggs develop into larvae that swim briefly before settling permanently on the bottom. A few clams, such as the gem clam (Gemma), have internal fertilization and development. In addition, a few species of clams ...
japonica in the SGT tests significantly increased the EDR, further confirming the effect of the presence of the male on the female in terms of facilitating egg discharge from oogonia. 展开 关键词: gametogenesis life-span of sperm Saccharina japonica seaweeds Undaria pinnatifida ...
A model by Caswell (1983) can be applied to this question. The result is a new explanation for early sex change. Alternative male spawning patterns in diandric species require the existence of alternative female spawning behaviors. When the spawning system is viewed from the female perspective, ...
LOCAL POPULATION SIZE AS A DETERMINANT OF MATING SYSTEM AND SEXUAL COMPOSITION IN TWO TROPICAL MARINE FISHES (THALASSOMA SPP.) Two sexual types, one a non-sex-changing (primary) male and the other a protogynous hermaphrodite, coexist in the wrasses Thalassoma bifasciatum of the Atlantic and T...
a paradigmatic example, as their sex-determination mechanisms range from environmental to different modes of genetic determination. The evolutionary meaning of this remarkable plasticity is unknown. For genetic sex determination, where the trigger for female or male development comes from the genetic ...