In this study, the variation of seasonal and inter-annual density diversity copepod community in Parque Nacional Sistema Arrecifal Veracruzano (PNSAV) was analysed. Samples were collected under nortes, rainy dry weather conditions 2011, as well nortes 2012 2013 four transects. Surface trawls with 330-μm conical nets made. The temperature, salinity dissolved oxygen measured situ. values obtained 23.07 ± 0.53 to 29.29 0.27°C for 33.43 0.49 35.91 0.09 salinity, 2.52 0.08 6.56 mg l−1 oxygen....

We assessed the association between five Synalpheus shrimp species (Synalpheus brevicarpus, fritzmuelleri, minus, scaphoceris, and towsendi) sponges (Amphimedon compressa, Aplysina fistularis, Ircinia Ircinia. strobilina, Sidonops neptuni) from parque marino nacional Sistema Arrecifal Veracruzano. Abundance of in each sponge collected was noted. The Jaccard index (J) applied to verify this six reefs park. Further, correlation carapace depth canal diameter assessed. total number shrimps 102,...

<p>This paper discusses biology reproductive aspects of the yellow fish <em>G. multiradiatus </em>in reservoir Villa Victoria located in State Mexico, Mexico. Monthly samplings were carried from November, 2005 to October, 2006. 657 organisms collected using a baitwell net. The sex ratio females/males was 2.27:1 (p <0.05) and size at first maturation for females 32 mm standard length. spawning season occurred between March corresponding highest values gonadosomatic...

Some morphological differences among the megalopae of family Panopeidae have been determined. The megalopa stage was obtained from artificial inlet Camaronera Lagoon, Veracruz, Mexico. Morphological analysis consisted of: dissection antennule, carapace, and telson, classification counting setae aesthetascs, measurements carapace width length. A total 96 172 several species Brachyura were obtained, which 577 belonged to Panopeidae. Six this identified: Panopeus herbstii, P. lacustris,...

Se presenta el primer listado de grupos invertebrados bentónicos del sistema lagunar Mandinga (SLM). realizaron siete colectas en temporadas secas 2008 a 2015 y una temporada lluviosa 2015. Los organismos endobénticos se colectaron con draga los epibénticos, red tipo Renfro chinchorro. Todos identificaron hasta nivel permisible. El está conformado por un total 43 zoológicos, distribuidos ocho filos, clases, nueve órdenes, 16 familias tres tipos larvas. Decapoda (10), Gastropoda (8),...

Of the four species of genus Cardisoma, a larval description is available for three. A Cardisoma crassum not available. The objective this work was to describe first zoea C. crassum. Ovigerous females were collected from El Salado Estuary, in Puerto Vallarta, Jalisco, México. zoeal stage shares features typical Cardisoma: antenna with exopod equal 2/3 protopod length, maxilla endopod terminal and two subterminal setae, maxilliped basis setae arranged 2, 3, 3 1,1,6 on second maxilliped. Also...

Los cangrejos del género Callinectes están ampliamente distribuidos en aguas cálidas. Habitan principalmente lagunas costeras y estuarios. En las golfo de México, sujetos a una pesquería importante. el caso sapidus rathbunae contribuyen con 90 % la captura nacional. Un aspecto importante ciclo vida los es parasitismo causado por balanos parásitos orden Rhizocephala, debido su alta prevalencia periodicidad. El objetivo presente estudio fue proveer información reciente acerca número externas...

In the present study, we reared juvenile dark crabs, Callinectes rathbunae under laboratory conditions. We determined growth rate, increase in carapace width, moult consumption, regeneration of appendages, and survival. The crabs were collected March 2004 from Alvarado Lagoon System state Veracruz, Mexico. Crabs transported to acclimated 5 15 psu a temperature 25 ± 1° C. Growth rate was by difference size at time interval between pre-moult stages. Survival assessed counting during rearing,...

The present study was developed with the purpose of analyzing behavior ichthyofauna and its feeding relationships in three rivers that flow into Alvarado Lagoon, on coast Gulf Mexico relationship physicochemical parameters through an annual cycle.Two sampling sites were located each lagoon, Papaloapan River, Acula River Blanco one them at mouth to lagoon other 1500 m, upstream, site recorded capture fish also obtained.The results show there is inverse significant between species richness...

Fecundity in crustaceans is generally defined as the number of eggs produced by a female during<br />spawning season particular and often expressed terms body size. Among brachyuran<br />there considerable variation fertility. This study aimed to estimate fecundity Cardisoma<br />crassum Smith, 1870 which important mangrove ecosystem specie it helps process of<br />degradation organic matter forest. A total 17 ovigerous females<br />were collected, with an...

<p>This study was conducted in the rainy (June-August 2013) and dry season (April 2014) El Salado estuary, Puerto Vallarta, Jalisco, Mexico to understand behavior of fiddler crabs <em>Uca latimanus </em>Rathbun, 1893 by means films. Observe behaviors were: feeding, walking (displacement), feeding walking, standing (stationary), aggression defense, agitation chela; feed rate also obtained. The temperature ranged between 29 38 ° C two seasons. In presence <em>U....

Batches of 100 female cypris the rhizocephalan, Loxothylacus texanus Boschma, 1933 were selected and put into contact with megalopae crabs genus Callinectes. Contacts lasted for 12 h organisms infected then kept individually in plastic containers, their growth was followed. At same time, free parasites as controls. The monitored daily until externae L. emerged. time interval emergence male hosts 79-110 days; rates 0.19-0.29 mm day−1 an average 0.24 ± 0.037 day−. In females, 78-100 rate...

The growth of organisms is accompanied by changes in proportion and size, it known as relative or allometric growth. C. crassum one the largest crab species inhabits mangrove forests Eastern tropical Pacific, however, data this specie deficient limited to a few records. Therefore, aim work was estimate El Salado stream, Puerto Vallarta, Jalisco, Mexico. A total 252 were captured rainy season, which marked released after assessments. Huxley equation used determine allometry condition factor...

<p>The coffee plantations have been considered refuges of biological diversity, the faunistic studies in this type agroecosystems are great importance for knowledge and conservation fauna. The objective present study was to know wild fauna status species farm "El Chorrito". Sixty-one were recorded, 24 corresponding avifauna, 20 herpetofauna 17 mastofauna; represents 3.4% avifauna reported Estado de Veracruz, 11.11% country's 3.21% 529 mammals Mexico; 18 these found NOM-059, seven IUCN...

A study was carried out to assess the biological aspects of Dormitator maculatus, analyzing sex ratio, diet, and growth estimates based on von Bertalanffy model.All organisms were captured with help 50 m.long cast fishing lines at ten sampling stations monitored between May 2015 2017.642 subjects ranging 3 14.7 cm total length for males, 3.9 15.9 females.Sex ratio is 1:1 female:male, they consume nine different types food, mainly Ruppia marítima, detritus, benthic algae ostracods.The...

The objective of this study was to analyze the brachyuran crab assemblages associated with shrimp fishing on central-southern coast Veracruz. Information collected using 46 trawls organized within nine quadrants. total catch shrimp, bycatch, and discard were recorded standardized (CPUE kg h-1). Value index by species, species richness, diversity Shannon Weaver index, equitability determined. A 3055 individuals collected, which corresponded families, 13 genera, 14 species. Achelous...

The objective was to analyse the relative growth and size structure of Achelous spinicarpus associated with trawling in Veracruz. organisms came from shrimp trawls carried out July 2013. There were 45 organized two depth intervals (B: 22 46 m C: >46 m) 14 fishing quadrants. Abundance, mean standard deviation, by sex interval, ratio determined. An ANOVA applied compare CW means, CW-weight relationship obtained, type also Length-frequency analyses out. A total 2377 crabs collected, 1164...

We evaluated the composition, distribution, and abundance of decapod genera at different developmental stages larvae adult macro-crustaceans along coastline Parque Nacional Sistema Arrecifal Veracruzano, SW Gulf Mexico. Collections were made using light traps. Temperature, salinity, oxygen, pH measured in situ. The samples fixed with 70 % alcohol, separated, identified by stage genus level specialized literature. Olmstead-Tukey test, Shannon-Wiener diversity index, Pielou equitability test...