ARISTEUS ANTENNATUS PDF

Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. A Nature Research Journal. Understanding life history variation and strategies is crucial for stock assessment and fisheries management due to the direct effects on population dynamics, effective population size, sex-ratios, levels of inbreeding, and relatedness among individuals.

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Any reuse of one or more photographs on this site is subject to an authorization request from the author. Link to the Code of Intellectual Property Legifrance. Corresponds to a report on the basis of at least one observation proved within a period of 10 years 20 years for little-known invertebrates preceding the year and no presumption of extinction since obtaining the last data nor doubt on reproductive and implemented nature of this population.

For migratory species, the presence indicated concerns areas of reproduction. This status is based on one or more of the following criteria: search of species incomplete but presence of supportive environments; ecology of the species consistent with the hypothesis of his presence; the last reliable sighting is older than 10 years compared to the reference date, no recent specific research and no presumption of extinction from that date [vertebrates, invertebrates and plants well studied rhopalocera, grasshoppers, dragonflies This point covers the absence, more difficult by nature to demonstrate than presence.

This status is based on one or more of the following criteria: intensive but unsuccessful targeted research; lack of adequate environments; unobserved species while its presence is easily detected; unlikely presence for historical or biogeographical reasons.

This status must be assigned to a department in which the presence of the species is casual. Particular case of absence due to a proven extinction less than a half century ago older disappearances are treated as "no probable or definite". In the state of knowledge, we can not comment on the presence or absence in the current department. This is the default status when not comprised in one of the previous categories or whenever there is doubt.

View the presentation. Aristeus antillensis A. Access to the 17 data on distribution. Sources of the 4 datasets. No votes. Please describe the problem encountered identification, representation, etc.

Cancel Envoyer. Thank you for your contribution to the improvement of the INPN. The information submitted has been sent to an expert for verification and correction. Close Envoyer. Certain presence Corresponds to a report on the basis of at least one observation proved within a period of 10 years 20 years for little-known invertebrates preceding the year and no presumption of extinction since obtaining the last data nor doubt on reproductive and implemented nature of this population.

Probable presence This status is based on one or more of the following criteria: search of species incomplete but presence of supportive environments; ecology of the species consistent with the hypothesis of his presence; the last reliable sighting is older than 10 years compared to the reference date, no recent specific research and no presumption of extinction from that date [vertebrates, invertebrates and plants well studied rhopalocera, grasshoppers, dragonflies Probable or certain absence This point covers the absence, more difficult by nature to demonstrate than presence.

Absence due to a proven extinction Particular case of absence due to a proven extinction less than a half century ago older disappearances are treated as "no probable or definite". No information In the state of knowledge, we can not comment on the presence or absence in the current department. Warning: The data available reflects the progression status of knowledge or the availability of the inventories.

It should never be considered as comprehensive.

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Aristeus antennatus (Risso, 1816)

We'd like to understand how you use our websites in order to improve them. Register your interest. Selectivity experiments were carried out during trawling targeting deep-water shrimps Aristaeomorpha foliacea Risso, and Aristeus antennatus Risso, Crustacea, Decapoda, Aristeidae in the North-Western Ionian Sea Eastern-Central Mediterranean. In particular, CL m was computed for the mature females not considering the presence of spermatophores, for the mature females with spermatophores and for the mature females intersected by the decreasing proportion with size of females without spermatophores. The mm stretched mesh size European Union legal size in the Mediterranean was not selective for the sampled population of each species.

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Box , Anavissos Attika, Greece. In the eastern Ionian Sea, the deep-water shrimps Aristaeomorpha foliacea and Aristeus antennatus constitute a virgin fishing resource, since their maximum abundance depth exceeds commercial exploitation depths. The two sympatric species share a number of common reproductive features, such as summer reproduction. A slight temporal shift in mating activity, ovarian maturation, and spawning period was observed between species. The most notable difference was the more pronounced seasonality in reproductive activity of Aristeus antennatus compared to that of A. Nevertheless, regarding the whole life span, both sexes of Aristeus antennatus exhibit a more extended reproductive activity in comparison to A.

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