GQ#7: Devil's Hole is a warm spring located within the Ash Meadows National Wildlife Refuge in Nevada, USA. It is said that this spring became isolated from other bodies of water in the area approximately 50, 000 years ago. It is the only habitat of the Devil's Hole pupfish (Cyprinodon diabolis), which cannot interbreed with other pupfish species (like the Ash Meadows pupfish, Cyprinodon nevadensis) from nearby springs. What mode of speciation is most probably responsible for this reproductive isolation?
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- FRONTLINE: Poisoned Waters (Puget Sound) The film portrays the resource value of orca whales as primarily one of existence value. That means orcas are valued mostly a) for their potential, undiscovered value. b) for keeping the ecosystem in balance by eating salmon. c) merely because people know they are there. d) as a tourism resource. e) for their oil and blubber.Very few species on Earth are completely r-selected or K-selected. Many species in their natural habitats demonstrate a life strategy that ranges along a continuum between r- and K-selected strategies. Use this information to answer the 3 sub-parts. a) Sea otters are marine mammals that live in northern Pacific coasts. Typical female sea otters reach sexual maturity around 3 or 4 years of age, and they reproduce once a year, producing a single pup.Only female sea otters are tasked with raising the offspring. Mothers constantly take care of their pups until they are 8 months old, but only 25% of the pups survive past the first year. Sea otter fur was highly sought after between the 18th century and the early 20th century. Through conservation efforts, the number of sea otters increased. The current world population is estimated to be between 1 000 and 2 000 individuals, and they are considered to be endangered. Their main food source is sea urchins, molluscs, and crustaceans. Sea…The first species to live on new land, such as that formed from volcanic lava, are called__________. climax community keystone species foundation species pioneer species
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- Introduction The Rock Pocket Mouse The rock pocket mouse, Chaetodipus intermedius, is a small, nocturnal animal found in the deserts of thesouthwestern United States. Most rock pocket mice have a sandy, light-colored coat that enables them to blendin with the light color of the desert rocks and sand on which they live. However, populations of primarily dark-colored rock pocket mice have been found living in areas where the ground is covered in a dark rock calledbasalt caused by geologic lava flows thousands of years ago. Scientists have collected data from a population ofprimarily dark-colored mice living in an area of basalt called the Pinacate lava flow in Arizona, as well as from anearby light-colored population. Researchers analyzed the data from these two populations in search of thegenetic mutation responsible for the dark coat color. Their analyses led to the discovery of a mutation in theMc1r gene that is involved in coat-color determination. The MC1R Gene Two pigments…Question:- Give clear examples of both direct and indirect species interactions.Milkfish (Chanos chanos) is the only fish species that belongs to Family Chanidae which is nearly related to tuna and salmon due to its fusiform shape and migratory nature (FAO 2009; BFAR 2020). It is widely distributed in the Indo-pacific region and abundantly collected in the South and Southeast Asian, and West Pacific Regions (BFAR 2010). Milkfish is one of the most commercially important fish species in the Philippines (Samson 1984). Milkfish reach sexual maturity (approximately 1.5m length and 20 kg weight) in five years in large floating cages, but may take 8-10 years in ponds and concrete tanks (FAO 2009). In the natural environment, milkfish populations near the coral reefs spawn during warm months of the year while populations near the equator spawn year-round. First-time spawners produce fewer eggs but larger and older broodstocks produce as many eggs as wild adults of similar size. Broodstocks of about 8 years old and about 6 kg produce 3-4 million eggs. Juvenile and adults…
- Milkfish (Chanos chanos) is the only fish species that belongs to Family Chanidae which is nearly related to tuna and salmon due to its fusiform shape and migratory nature (FAO 2009; BFAR 2020). It is widely distributed in the Indo-pacific region and abundantly collected in the South and Southeast Asian, and West Pacific Regions (BFAR 2010). Milkfish is one of the most commercially important fish species in the Philippines (Samson 1984). Milkfish reach sexual maturity (approximately 1.5m length and 20 kg weight) in five years in large floating cages, but may take 8-10 years in ponds and concrete tanks (FAO 2009). In the natural environment, milkfish populations near the coral reefs spawn during warm months of the year while populations near the equator spawn year-round. First-time spawners produce fewer eggs but larger and older broodstocks produce as many eggs as wild adults of similar size. Broodstocks of about 8 years old and about 6 kg produce 3-4 million eggs. Juvenile and adults…Milkfish (Chanos chanos) is the only fish species that belongs to Family Chanidae which is nearly related to tuna and salmon due to its fusiform shape and migratory nature (FAO 2009; BFAR 2020). It is widely distributed in the Indo-pacific region and abundantly collected in the South and Southeast Asian, and West Pacific Regions (BFAR 2010). Milkfish is one of the most commercially important fish species in the Philippines (Samson 1984). Milkfish reach sexual maturity (approximately 1.5m length and 20 kg weight) in five years in large floating cages, but may take 8-10 years in ponds and concrete tanks (FAO 2009). In the natural environment, milkfish populations near the coral reefs spawn during warm months of the year while populations near the equator spawn year-round. First-time spawners produce fewer eggs but larger and older broodstocks produce as many eggs as wild adults of similar size. Broodstocks of about 8 years old and about 6 kg produce 3-4 million eggs. Juvenile and adults…Milkfish (Chanos chanos) is the only fish species that belongs to Family Chanidae which is nearly related to tuna and salmon due to its fusiform shape and migratory nature (FAO 2009; BFAR 2020). It is widely distributed in the Indo-pacific region and abundantly collected in the South and Southeast Asian, and West Pacific Regions (BFAR 2010). Milkfish is one of the most commercially important fish species in the Philippines (Samson 1984). Milkfish reach sexual maturity (approximately 1.5m length and 20 kg weight) in five years in large floating cages, but may take 8-10 years in ponds and concrete tanks (FAO 2009). In the natural environment, milkfish populations near the coral reefs spawn during warm months of the year while populations near the equator spawn year-round. First-time spawners produce fewer eggs but larger and older broodstocks produce as many eggs as wild adults of similar size. Broodstocks of about 8 years old and about 6 kg produce 3-4 million eggs. Juvenile and adults…