Limulus Polyphemus's Life Cycle: Horseshoe Crabs

You scratch Giant Crab 1 in the left first leg from behind, fracturing the chitin and bruising the fat!

Male Northern Correboree Frogs move into the breeding sites in summer and call their mates in late January to early March from covered mossy chambers at the edges of Sphagnum Bog pools and other overgrown places. When the females briefly visit the calling males they typically lay 20-30 eggs in a nest.

The Purple Marsh Crab, or simply known as the Marsh Crab, is a small crab that is native to the Eastern United States. They live in the salt marshes and mud flats of brackish estuaries, and create networks of connected tunnels within the flats.

Lobsters that are smaller than 1-1/2 inches hide in coral or see weeds. This provides shelter from predators such as flounder, cod, ocean pout, monkfish, sculpin, wolffish, and dogfish. When lobsters are adults they are much less vulnerable. The only predator for adult lobsters is man. Big lobsters inhabit offshore areas and only return home seasonally to shallow warmer waters. A female lobster can carry up to 50,000 eggs. A female lobster can only mate after it has molted. The developing embryos remain attached to the female for an estimated 9 to 11

They exhibit a polygynous mating system, which means they have one-male and multi-female groups. The male’s large home ranges envelop the home ranges of several females. The males will mate with all the females in their home range and even some in extending home ranges. Females will also mate with members of different home ranges. The two remain together for several days while mating and will copulate several times in that period. Litters are usually fathered by one male, and the males will defend and mark their territory while mating. Females will mate every other year from May to August. They will stay in heat from June to August, and most mating will occur in June or July. Most interestingly females display a delayed implantation where the embryo is not implanted immediately at copulation but actually waits in diapause for about six months. Fertilized eggs develop to the blastocyst and will remain there until implantation to the uterine wall which typically occurs in the months from December to February. This means pregnancy may last anywhere from 120 to 272 days. Which will depend on when the embryo is fertilized and when it is implanted. Parturition is perfectly timed for the optimum survival of their young, which is usually when the most food is available. Females build snow-dens to birth and nurse their young. They typically have two dens, a natal den for giving birth and then when this den is

There are numerous variables that impact hatching rate such as the salinity levels of the habitat as the cyst would not hatch if the salinity was not ideal. If the conditions were not correct, the cysts remain dried and surrounded by a thick shell until ready to develop which can be up to 50 years. Once the conditions are met, the cyst takes approximately 36 hours until the shrimp is released; from there, the adolescent can produce up to 500 nauplii. The salt concentration, when too high, impacts hatching as osmosis cannot occur correctly. The water outside the shell would have a higher

Degradation of the economy, environment and human health is caused by a variety of species. However, the most harmful types of species are known as invasive species. An invasive species is any species that is not native to the environment it is living in. European Green Crabs in particular cause mass harm to their surrounding habitat. However, there are several methods put in place to control the widespread of these creatures and minimize the harm caused by European green crabs. The European green crab can spread accidentally and then stay and cause harm to their new surroundings. Although these green crabs can cause serious harm, there are multiple measures in place to minimize the degree of harm. Confirmation of European green crabs in Canada

Typically during the day these spawning spring crappie fish can be taken around the nearest cover close to spawning banks using the same methods but fishing somewhat

For reproduction it is best to place one male in with 2-3 females. This will lower the rate of fighting compared to a one on one. Then the female will typically make a burrow 6-8 in. deep and lay her eggs there. The eggs will hatch about 60-70 days

Since they are capable of living for lengthy amounts of time, their diet is very simple because of the availability of their food. All green sea turtles that reach adult hood are herbivores that primarily consume sea grasses and algae. Juvenile green sea turtles, on the other hand, are carnivores primarily consuming on both plants and animals such as crustaceans, sea grasses, and tubeworms ("Green Sea Turtle - National Wildlife Federation" par. 9). Through research, it is said that green sea turtles are able to consume about 275 different species of seaweed. To help them cope with this diet, they have micro flora living in their large intestine to breakdown the cellulose that is indigestible (NOAA Fisheries par. 6). Green sea turtles reach their sexual maturity between 25-35 years old. However, the length of reproductively can vary ranging from about 17-23 years. As soon as they become fertile, they return to the nesting beaches of the Northwestern Hawaiian Islands to lay their eggs from every two to three years. They will deposit three to six clutches per nesting season with about twelve days in between (NOAA Fisheries par. 10). Each clutch can contain about 100 eggs that will take 60 days to incubate. Once they hatch and reach the water, they rarely return to land. They instead feed on the seaweed and crustaceans that are off shore. Green sea turtles inhabit the shallow waters until it is time for breeding season. They are very particular in finding a nesting spot that they will often travel many oceans to reach their ideal nesting

Atlantic croaker larvae have a peak in spawning from July through December and an estuarine recruitment peak in October-November (Cowan, 1988; Ditty et al., 1988; Warlen and Burke, 1990; Barbieri et al., 1994a). Atlantic croaker spawn over a wide range of inner continental shelf depths, i.e., 54 m or shallower, with a portion of the population moving inshore towards the estuaries to complete spawning in the winter and early spring months (Barbieri et al., 1994a, 1994b). Hydrologic variability at large and small spatial and temporal scales can greatly affect the numbers of Atlantic croaker larvae able to successfully recruit to estuarine nursery grounds (Norcross, 1983; Shaw et al., 1988; Raynie, 1991; Raynie and Shaw, 1994). Once in the estuary, lower water temperatures in the first winter decrease survival, as verified in both the field (Norcross and Austin, 1988; Hare and Able, 2007), and laboratory (Lankford and Targett, 2001a, 2001b).

The Polyphemus moth lives in 1temperate regions like the suburbans, agricultural spots, and 2estuaries. Most of the time they live

Mating season usually occurs during the winter. During the breeding seasons, males of various stingrays use their “ampullae of lorenzini” to sense certain electrical signals given off by other female counterparts before potential copulation. When the female is found within site, the male courts the female until he is able to bite at her pectoral disc (pre-copulatory biting). In this process the male bites off the female’s pectoral fins and in process, replaces one of his two claspers into her valve or cloaca. The clasper then transfers the sperm into the female’s oviduct where the egg is fertilized until the birth of the babies. All female Stingrays are internal fertilizers and therefore undergo a process called ovoviviparity.

Samantha, that is a key in the districts of schools at all levels, we tell kid they have a voice, but where I their voice. The school will tell the students if they have concerns, something is happening, and we don’t allow bullying at our campus. But how much truth is there to that sentence? Unfortunately, students must look at angles to stay safe, in some cases where and how they need to share good a negative situation. Dean Diamond explained, “exposing kids to different characters, different ways of thinking, something so foreign it the way they live, I do think that it broadens them as people (Seider, p. 185). During school meetings, I think we need to be prepared to respond to the student’s questions, whether they be positive, their hurtful emotions, and how they feel they aren’t heard. Students can be lead if they have role models that promote positive civic development. If the faulty is not approachable, them the student body will deal with things in their way, rather than thinking that the faculty supports them.

I believe that deep sea mining will mostly help people and the environment, just as long as miners and mining companies take in count what they are doing and that they do everything in a way that won't harm the environment as much. The deep sea mining is very beneficial. For example, it harms the environment less and allows people to stay in their homes, it also would make a lot of money.